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TI在线培训：智能穿戴设备设计要点与难点

4/25/2017

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培训课题

• 智能穿戴设备概要

• 多主多从在智能穿戴设备的应用衍生

• 穿戴设备低功耗设计要点

• 小体积、低功耗电源解决方案

• 心率测量模拟前端方案

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可穿戴设备场景及蓝牙5.0应用

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Michael Qian

无线连接现场应用工程师

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蓝牙手环市场分析

机遇与挑战:

产品同质化严重，容易陷入价格战旋涡.

科技与时尚的结合与妥协,材质的选择,ID设计与PCBA尺寸的考量.

高性能CPU处理能力与低功耗待机并存的需求.

产品实用性与计步,睡眠,心率及其他功能的精确度.

行业标准化.

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穿戴设备系统框图

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加速度传感器 铁电存储器

photodiode

IR LED & RED LED

心率采样模拟前端

电源管理 USB

Battery

马达驱动

DRV2625

OLED 显示

温湿度传感器

LMT70

CC2640R2

TI 全系列蓝牙介绍

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CC2540T

世界上首例 125°C 蓝牙芯片

CC2541Q1 Q-100 质量认证的车规芯片

CC2540 带USB的蓝牙芯片

CC2640

CC2640R2 业界超低功耗 • 可供纽扣电池工作多年: Cortex M3处理器, 射频处理器, 超

低功耗待机以及片上协处理器

超高集成度 • 手指大小的PCB板: 4X4 QFN, 5X5 QFN, 7X7 QFN 封装

零基础上手指南 • 多种低成本开发套件,完整的蓝牙4.2协议栈,各种开发文档

CC2541 业界最早,协议栈最稳定使用客户最多的BLE蓝牙芯片

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7

蓝牙协议栈

应用层 ~80+ kB

操作系统

TI CC2640R2

RO

M

FLA

SH

德州仪器超低功耗蓝牙芯片CC2640R2特点

80k+ 用户可编程空间

与CC2640蓝牙芯片管脚兼容

固化蓝牙4.2协议于芯片内部ROM区域

支持蓝牙4.2所有特性

(大数据传输，ECDH秘钥交换，隐私保护)

硬件支持蓝牙5.0

(远距离传输, 2Mbps数据传输, Mesh组网)

工业界射频性能最好的蓝牙芯片

三核融一, 助力高性能超低功耗蓝牙应用开发

多种封装, 2.7x2.7 WCSP, 4x4, 5x5, 7x7 QFN

无需外挂32768赫兹晶振

多种射频输出方式：单端或者差分

支持多连接协议,可同时连接多个主设备或者从设备

CC2640

128

KB FLA

SH

CC2640R2F 蓝牙介绍

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支持蓝牙5.0

应用处理器

射频核

协处理器

外设

应用处理器

• 应用层

• 服务 • TI RTOS

• 外设驱动库 • 协议栈库

外设

• DC/DC 转换器

• 电池电压监控器 • AES

• GPIO • Timers

• UART / SPI • I2C / I2S

• DMA

协处理器

• ADC,比较器

• 传感器数据读写 • 触摸按键

射频核

• 灵活可编程的射频核

• 多协议支持 • 支持连接层协议

内存

内存

• 128 KB FLASH

• 20 KB SRAM

(WCSP 2.7x2.7mm封装 汽车级 支持5.0 模组支持 CCS 云端开发

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蓝牙超低功耗示意图

1. 休眠模式(RTC保持工作/RAM数据保持)

2. MCU唤醒状态

3. 射频收发状态

4. 协处理器数据采集

Application Note SWRA478: Measuring Bluetooth Smart Power Consumption

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Cortex

M3

Cortex

M0

SCE

Peripherals

RF Core

• ARM Cortex M3 • Fast processing using less than

3 mA @ 48MHz

• Less time used for stack and

application processing and BLE

connection events

• Sensor Controller

Engine • Sensor controller and its

peripherals can be powered

while rest of system is power

off.

• Run Sensor Reading with

< 5 µA current consumption

• Radio • ~6mA RX / TX current

• Standby Current • 1 µA Standby with RTC and full

retention

• 150 nA in Shutdown

1

2

3

4

1

3

2

CC2640R2F 蓝牙功耗介绍

协处理器的优势与作用

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16位RISC核CPU分担M3核的工作强度

工作模式

• 采集传感器数据加以简单的处理

• M3休眠状态下长期保持工作状态,分担主核的工作并降低功耗

应用案例

• 动作位置检查

• 触摸按键

• 接近报警

• 加速度传感器数据采集及分析

• ADC数据采集

• 脉冲计数

SEC 参数

16-bit RISC CPU

2 KB SRAM (code + data)

Clock Frequency:

32kHz-24MHz

8.2uA / MHz

M3 M0

SCE

Peripheral

Analog

Sensor

Digital

Sensor

Capacitive

Touch

External Sensors

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参数 电流

RX (-96dBm sensitivity) 6.5 mA

RX (reduced sensitivity) 5 mA

TX (0dBm) 6.5 mA

MCU performance 70 uA/MHz

1s BLE 连接 (平均电流) 6 uA

I2C (平均电流)

(10 字节, 每秒10次) 3 uA

休眠电流 (RTC保持, RAM 保持) 0.7 uA

深度休眠 (RTC保持) 0.1 uA

CC2640R2F 功耗参数

CC2640R2F 在穿戴设备端的场景衍生

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多主多从

• 蓝牙设备可同时做为主设备和从设备。

• CC2640R2F 多主多从角色可以使该设备可以最多连接8个设备。

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Bluetooth low energy

Central + Peripheral

CC2640

MultiRole + Long range

20℃ 35%

Good air quality

Central

Central

Peripheral

Peripheral

Peripheral

Fitness: Heart rate monitor, smart

watch, phone

Automotive: Remote keyless entry &

control

多主多从的应用场景

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Health/Medical: Glucose sensor,

stationary receiver, phone Industrial: Smarter door locks

Peripheral

Peripheral

Peripheral

Peripheral

Central Central

Central Central

CC2640 MultiRole

CC2640 MultiRole

CC2640 MultiRole

CC2640 MultiRole

Notification “Unlocked”

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多主多从在穿戴设备的应用

下一代支持蓝牙5.0平台CC2642助力智能穿戴设备的应用

Agama

Main CPU:

Up to

352 kB

Flash

with 8kB

Cache

Sensor interface

cJTAG

Up to

80 kB

SRAM

2xROM

ARM®

Cortex™

M4F

LDO, clocks and references

Optional DC/DC converter

RF core

ARM®

Cortex™ M0

DSP modem, 2x speed

4xSRAM

ROM

ULP Sensor Controller

2 MHz, 24MHz

Low Power Comparators

12 bit ADC, 200ks/s

Constant Current Source

SPI/I2C digital sensor IF

4kB SRAM

Time to Digital converter

General peripherals/modules

4 16-bit Timers

2xSSI (SPI, µW, TI)

Watchdog timer

Temp. / batt. Mon.

RTC

I2C

2xUART

I2S

10 / 15 / 31 GPIOs

Enhanced Security

32 ch. µDMA

ADC

ADC

Digital PLL

Up to 48 MHz

61 µA / MHz

Sub-1 GHz

+20 dBm PA

TRNG

2.4 GHz

Narrow

band

2.4 GHzor

Sub-1 GHz

More memory for application

and RF protocol(s)

More processing power: ARM Cortex M4F

• Enhanced security Hardware Acceleration: AES-128/256, SHA-512, ECC, RSA-2048)

Dual band RF:

• Sub 1GHz + 2.4 GHz

• Smart Phone Connection

More capable modem

• 2x speed for more

advanced modulation

+20 dBm PA for longer range

Narrowband + 169 MHz

• Better sensitivity

• Cover more metering

standards (WMBUS)

Lower Power flow metering

• New 2MHz mode giving 4-10

times lower power for flow

measurements

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蓝牙5.0

17 Source www.bluetooth.com/bluetooth5

蓝牙5.0新特点

远距离传输

• +5dbm/-97dbm发射/接收电流

• 全家庭覆盖

更大的数据传输

• 比蓝牙4.0高500%的通信速率

• CC2640R2F 支持5Mbps的数据传输率 (私有协议)

广播包长度衍生

• Beacon广播数据包长度的提升

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10

CC2640R2F蓝牙设计要点

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Evaluation Module CC2650EM-4XS CC2650EM-5XD CC2650EM-7ID

CC2650 Package Type 4x4 5x5 7x7

Pitch [mm] 0.4 0.5 0.5

GPIOs 10 15 31

Desig

n E

xam

ple

RF Frontend Option

Single Ended External Bias

Differential External Bias

Differential Internal Bias

Area [cm²] 1.3 1.5 2.3

Illustration

Crystals 2 2 2

Capacitors 14 17 18

Inductors 3 6 5

Resistors 1 1 1

Total 20 26 26

射频参数选择

最好射频性能

• 差分外置偏置

• 5 dBm 发射功率

• -97 dBm 接收灵敏度

最小尺寸

• 单端内置偏置

• 2 dBm 发射功率

• -96 dBm 接收灵敏度

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供电方式选择

CC2640与CC2640R2F的区别

• CC2640R2F 硬件支持Bluetooth5 PHYs (2Mbps, 500kbps and 125kbps)

• CC2640R2F 更多的flash给客户应用层编程

• CC2640R2F 最小WCSP封装，包含14GPIOs

• CC2640R2F 与CC2640是pin to pin兼容

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Package

Option

Total GPIO

Pins

MAX

IOID

7x7 mm QFN 31 IOID_30

5x5 mm QFN 15 IOID_14

4x4 mm QFN 10 IOID_9

2.7 x 2.7 mm

WCSP 14 IOID_13

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v

CC2640R2F文档

• Fully Qualified BT4.2 Protocol Stack

– All features included

• IDE Support

– IAR Embedded Workbench for AMR v7.80

– Code Composer Studio (CCS) v7.0

• TI-RTOS

– Simplified Management

– Pre-emptive Multit-hreaded environment

• Documentation

– Software Developers Guide

– TI-RTOS Document Overview

– OAD for CC26xx

– Vendor Specific HCI & SimpleNP API Guides

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4.2

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IDE’s:

Code

Composer

Studio

CC2640软件框架

Application & Profiles

(RTOS thread)

HW: CC26xx Evaluation & Development Boards

Source

Library

Lower layers of RTOS kernel and BLE radio

FLASH

ROM

Over-the-air download

The FLASH can be partially updated over-the-air, which means that the application can be updated separately from

the BLE stack.

ROM code

The RTOS kernel and parts of the BLE

controller are stored in CC2640 ROM, so

these components do not occupy FLASH

space.

TI RTOS

& Peripheral

Drivers Bluetooth low energy Protocol Stack

(RTOS thread)

Lower layers of RTOS kernel and BLE radio

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应用层和协议栈

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Stack

Generic Access Profile (GAP)

Generic Attribute Profile (GATT)

Attribute Protocol Security Manager

Logical Link Control and Adaption Protocol

Link Layer

Physical Layer

HCI

Application

Application

Bond Manager GAP Role GATT Server

BT SIG Services Proprietary Services Development

BLE 软件开发包资料

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Documentation Projects/ble

• CC2640 Software Developers Guide

• TI BLE Vendor Specific HCI Guide

• OAD for CC26X

Accessories Drivers

• Boundary Tool

• Btool

IAR

CCS

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软件开发包例程介绍

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• Example project for a BLE Peripheral Role Device

• What is a BLE Peripheral Device?

– An advertiser that is connectable

– Operates as a slave in a connection

– Example: Heart Rate Sensor

• Implements a GATT Server

– Makes it a Bluetooth SMART candidate

– Both Bluetooth SIG Qualified and Proprietary Profiles

• Excellent for a base product when implementing a BLE device with

a peripheral role purpose. Master

(Central Role)

Slave

(Peripheral Role)

工程软件浏览

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• Project Workspace in CCS and IAR Embedded Workbench

Application

Profiles

RTOS

BLE Stack

Switch between

App/Stack

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TI-RTOS

C:\ti\tirtos_simplelink_

3_11_00_09

CC26xx-

Ware

SYS/BIOS

Kernel

Drivers Sample

board-files

IDE

Project

Stack

image

Application

image

CC26xx Other device

(iOS, BTool, TI Device

Monitor)

1. Project resources • Stack SDK Installer

2. Development tool • IAR/CCS

3. Compiling and linking • IAR/CCS

4. Programming • IAR/CCS/Flash Programmer 2

5. Debugging • IAR/CCS/SmartRF Studio

6. Packet sniffing • TI SmartRF Packet Sniffer

7. Target emulation • BTool / TI BLE Device Monitor

1

蓝牙软件开发流程

BLE SDK

C:\ti\simplelink\ble_cc

26xx_3_00_00_42893

Example

Projects

Example

Profiles

Protocol

Stack ICall

2

3 4

OTA Data

5 6 7

SmartRF Flash Programmer 2烧录工具

• GUI and command line version (CLI)

• Supports all LPRF ARM devices

– 8051 device support will be added

• Erase, program and verify

• «Edit» flash content manually

• Set secondary IEEE addresses

• XDS100v3, XDS200

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TI 在线资源

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产品支持

维基百科: www.ti.com/ble-wiki

官网: www.ti.com/ble • Application Notes

• Software & Tools Downloads and Updates

• Order Evaluation and Development Kits

工程师论坛 TI Bluetooth low energy forum – www.ti.com/wiconforum

• http://www.deyisuppport/question_answer (Chinese language, check with Tracy Zhou)

产品认证 • http://processors.wiki.ti.com/index.php/How_to_Certify_your_Bluetooth_product

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TI Power Solutions for Wearable TI用于可穿戴产品的电源方案

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Richard Tang

电源管理现场应用工程师，TI 技术委员会委员

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各模块电源设计关键考虑点 • 充电方案选择：

充电的方式和能力；总体面积小，器件薄; 封装小而薄；方案外部器件少，容易设计;路径管理；智能充电控制（预充，快充，满充判断，温度管理等）；高输入耐压和过压保护；低的反向漏电流等。

• 降压方案选择：

超低静态功耗，超轻载高效; 总体面积小，器件薄; 方案外部器件少，容易设计; 能够支持大的电池输入范围（2节AA到2节锂电池）；

• 升压方案选择：

超低静态功耗，轻载高效; 总体面积小，器件薄; 方案外部器件少，容易设计; 超低输入电压范围支持；输出电压和电流能力选择；负载断开控制等；

• LDO方案选择：

超低静态偏置电流；总体面积小，器件薄；最小压降低；散热能力好；

• 电量计方案选择：

电量计精度要求；封装小，外部元件少；休眠功耗低；

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36

Basic power in Wearable

36

TPS627431/6/8

TPS61099

TPS6125x

TPS61220

TPS61099

TPS61046

TPS61093

new

TPS61099:

800nA Iq boost

in WCSP-6

TPS61046:

Industry’s smallest solution

for PMOLED

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37

• VIN Range: 2.0V to 5.5V

• Ultra Low Quiescent Current of typical 360nA

• Up to 90% Efficiency @ 10µA Load Current

• 300mA / 400mA Output Current

• 3 options: a) x43: 8 User Selectable Vout (1.2V, 1.5V,

1.8V, 2.1V, 2.5V, 2.8V, 3.0V, 3.3V)

b) x46: Integrated Vin switch & Selectable Output

Voltages: 1.2V and 1.8V

c) x48: Integrated load switch &Selectable Output

Voltages: 1.2V and 1.8V

d) x431: 1.3V, 1.4V, 1.6V, 1.7V, 1.9V, 2.0V, 2.9V,

3.1V NEW (400mA)

• No Ripple True 100% Mode

TPS62740/3/31/5/6/8 300mA Buck Converter family in QFN, WCSP and module

FEATURES BENEFITS

APPLICATIONS

• MCU, BLE and Sensor Supply

• Wearable Electronics

• Medical Healthcare

• Home Automation

75% package size

reduction

12

ABCD 1.6 mm

0.9

mm

TPS62740

3 mm

2 mm

• RF Friendly DCS-ControlTM

• Discharge VOUT • 3x2 QFN (TPS62740), 1.6 x 0.9 WCSP (TPS62743/6/8) and

SIP module (TPS82740) • Tiny WCSP8 package, 1.6mm x 0.9mm x 0.5mm, Pitch 0.4mm

VIN

EN

VSEL1

VSEL2

VSEL3

SW

VOUT

GND

L 2.2 mH

COUT

10 mF

CIN

10 mF

VIN

2.0V to 5.5V

System

TPS627431.2V

TPS62743/6

new

38

TPS6274x at a Glance

38

TPS62743

VOUT = 1.2V to 3.3V

TPS62746

VOUT = 1.2V & 1.8V

VIN Switch

TPS62748

VOUT = 1.2V & 1.8V

LOAD Switch

0.9 mm

1.6

mm

0.9 mm

1.6

mm

0.9 mm

1.6

mm

20

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TPS82740 A/B 200mA step-down converter MicroSiP MODULE with integrated Load Switch, ONLY 360nA IQ and 3-pin VID

• Wireless Connectivity (e.g. BLE)

• Wearable consumer and medical

• Energy Harvesting

• Building and HVAC control

• Professional PDAs

• Industrial Metering

VOUT:

TPS82740A: 1.8V – 2.5V

TPS82740B: 2.6V – 3.3V

FEATURES BENEFITS

APPLICATIONS

• Reduces battery current , extends application run-time

• Disconnects additional circuitry during shut-down or sleep mode, reduces

leakage current during shutdown

• Provides design flexibility

• Maintains accurate output voltage at fast line and load transients,

seamless transition between PWM and LPM

• Provides design flexibility and active system link

• Supports a total solution size of <7mm2

• 360nA quiescent current, up to 95% efficiency (>90%

@ 10µA load)

• Sleep rate controlled, integrated Load Switch

• 2 x 8 pin-selectable voltages (100mV steps)

• RF friendly DCS-Control™ Topology

• Power Good Output plus Active Discharge (VOUT and

VLOAD)

• MicroSiP module, no external components

40

TPS61099 Up to 5.5V Output, 800nA Iq, Synchronous Boost

• 800 nA ultra-low IQ under Light Load

• P2P with TPS61240/1

• Operating Input Voltage from 0.7 V to 5.5 V

• Adjustable Output Voltages from 1.8 V to 5.5 V or fixed Vouit

• 0.8 A Min. Switch Current Limit

• Down Mode With High VIN

– VOUT ≤ VIN ≤ VOUT + 0.3V, still regulated VOUT

• True Disconnection During Shutdown

• >70% Efficiency at 10µA Load

• >90% Efficiency at 10mA ~ 200mA Load

• 6 Pin 1.23 mm x 0.88 mm WCSP Package

• Small package to allow compact system design

• Ultra low Iq and true disconnection to extend battery run time

• High output capability to support pulse load

• Smart phone Type-C Vconn

• NFC • Memory LCD display

• Heart rate monitor • E-ink display

GND VIN

VOUT SW

FB EN

Bottom View

GNDVIN

VOUTSW

FBEN

Top View

FEATURES BENEFITS

APPLICATIONS

21

TPS61046 Tiny 28V fully integrated Boost Converter

• VIN = 1.6 V to 6 V

• Up to 28V output voltage

• Integrated rectifier diode and isolation FET

• 600mA min switch current limit

• 0.1µA shutdown current

• ±2.0% output voltage accuracy over temp.

• Power save mode at light load

• 2ms built-in soft-start time

• True disconnection during shutdown

• OVP and output short protection

• TPS61046: 0.8mm x 1.2mm 6-Pin WCSP

• Smallest solution size

– Fully integrated boost solution

– Only needs 3-5 external components

– 12 mm^2 total solution for 12V output

• Maximizing battery run time

– Low shutdown current and quiescent current

– True disconnection during shutdown

• LCD backlight

• LCD bias supply

• PMOLED power supply

• Wearable devices

• Portable medical products

VIN

EN

SW

OUT

FB

GND

L1

2.2uF

1.0uF

R1

R2

OFF

ON

C1

C2

1.6V ~ 6V

10uH

TPS61046

VIN

EN

SW

OUT

GND

FB

L1

2.2uF

1.0uF

OFF

ON

C1

C2

1.6V ~ 6V

12V

10uH

TPS61046

FEATURES BENEFITS

APPLICATIONS

42

• 300 nA Ultra-Low IQ in Low Power mode

• Operating Input Voltage from 0.7V to 4.5V

• Up to 4.3V Output Voltage

• Min. 350 mA Switch Peak Current Limit

• Automatic pass-through when VIN > VOUT

• Integrated LDO/Load Switch

• Up to 88% Efficiency at 10 µA Loading

• Up to 93% Efficiency at 5mA ~100mA

• 1.5 mm x 1.5 mm 6-QFN Package

APPLICATIONS

TPS61098x Ultra-low Iq Boost Converter with Integrated LDO/Load Switch

• Always on power for MCU

• Low VIN to allow full battery discharge

• Small solution size & flexible system design

– Integrated LDO/load switch

– Automatic pass-through to save external power path control

• Smart Remote Control

• BLE tag

• Wearable Applications

• Low Power Wireless Applications

• Portable Consumer or Medical Products

FEATURES

BENEFITS

Subsystem

MCUVMAIN

VSUB

VIN

MODE

0.7 to 4.35V SW

GND

Coin cell /

1s or 2s

Alkaline /

Li-ion

Boost

LDO (or Load Switch)

22

43

TPS61098x family: 300nA Iq boost with LDO/switch

43

43

MODE LDO

Boost 4.3V

3.1V high MODE LDO

Boost 2.2V

off

MODE LDO

Boost 3.3V

3.0V high MODE LDO

Boost 3.3V

off

MODE LDO

Boost 3.3V

2.8V high MODE LDO

Boost 3.3V

2.8

MODE SW

Boost 3.0V

3.0V high MODE SW

Boost 3.0V

off

MODE SW

Boost 3.3V

3.3V high MODE SW

Boost 3.3V

off

TPS61098

TPS610987 (output discharge)

TPS610981

TPS610982

TPS610985

TPS610986

MODE = High MODE = Low

44

NEW!

• Forced pass-through mode

TPS61256C: BP=low for pass-through, 500mA at pass-through mode;

TPS61256: BP pin=high for pass-through mode

• Selectable Standby mode or true load disconnect during shutdown

• 1.2 x 1.3mm WCSP and 1.0 µH inductor

• Input voltage range 2.5 /2.65V to 4.85V

• Automatic Power-Save mode operation

• 4.5 / 5.0 / 5.1 / 5.2V fixed output options

TPS6125x 3.6A valley current limit, 3.5MHz, 1.2 x 1.3mm WCSP

• Smartphones / Tablets

– USB Type-C Vconn power

– NFC power

– Audio PA

• Heart Rate Monitor Power

• DC/DC POL

• Flexibility of use when in shutdown:

- Standby mode with pre-biased output (Bypass) and 22uA

quiescent current

- Load disconnect - Protects the device from reverse current

• Smallest solution size with less than 25 mm2

• Supports Li-Ion batteries with extended input voltage.

• Low quiescent current allows high efficiency at light load, 45uA

supply current.

Vout options / ISW

TPS61253 5.0Vo/3.6A

TPS61254 4.5Vo/2.15A

TPS61256 5.0Vo/2.15A

TPS61256C 5.0Vo/2.15A

TPS612562C 5.2Vo/2.15A

TPS612564C 5.4Vo/2.15A

TPS61258 4.5Vo/3.6A

TPS61259 5.1Vo/3.6A

TPS612592 5.2Vo/3.6A

FEATURES BENEFITS

APPLICATIONS

23

45

Benefits

TPS62770 Tiny single-chip triple solution with 360nA Iq Buck and up to 15V Boost

45

Applications

Features

VIN range 2.5V to 5.5V

1 x 360nA Iq buck converter (300mA)

→ VOUT selectable with VSEL1-3 1.0V, 1.05V, 1.1V, 1.2V, 1.8V, 1.9V, 2.0V, 3.0V

1 x Slew rate controlled load switch

Discharge on VO1 / Load

1 x Dual mode boost converter

→ Mode selection with BM pin

→ LED current driver with PWM to current conversion (max VFB voltage 200mV @ D = 100%)

→ Adjustable constant output voltage up to 15V (VFB 0.8V)

MCU, BLE and Sensor Supply

Wearable Electronics( HRM,PMOLED, Backlight display)

Medical Healthcare

Building Automation (IoT)

RF Friendly DCS-ControlTM

Discharge VOUT

On board LOAD Switch to disconnect sub-system to extend

battery run time

Minimum external components to optimize board space

Cover wide range of applications with single device

Tiny CSP16 package, 1.65mm x 1.65mm x 0.5mm, Pitch 0.4mm

SW2

VIN

EN2/PWM

VO2L2 = 10 Hm

COUT2

4.7 Fm

C

10IN

mF

TPS62770

GND1

DC/DC 2 Step up converter

EN1

SW1

VO1

L1 = 2.2 Hm

C

4.7 FOUT1

m

fixed VOUT DC/DC 1360nA Iq

Step Down Converter

CTRL LOAD Load OutputLoad Switch

FB

GND2

VSEL1

VSEL2

VSEL3

BM

PWM

RSense

GND2 SW2 VO2 VSEL3

VSEL2

CTRL

LOADVO1GND1VIN

SW1 EN1 VSEL1

BM FBEN2/PWM

A

B

C

D

1 2 3 4

Top view 16 pin YFF package

46

PMP9792 CC2650 BLE and TPS62770 for core power PMOLED Display

• FEATURES

• Fully adaptable development board with CC2650 & TPS62770 (

buck DCDC with load switch integrated + boost DCDC for display)

• CC2650 BLE SoC + PMOLED Display

• Compatible with iOS & Android via Bluetooth Low Energy

• Powered by TPS62770: Processor supply (1.9V) and Display

(9V) in one single IC

• Ultra-low-Iq buck: only 360nA

• APPLICATIONS

• Smart Watch (powering Heart Rate Monitor, Display, MCU, GPS & BLE)

• Fitness Wristband ( Display, Core power/MCU/BLE )

• Wireless Sensor

• Portable Medical Health devices

• Power BENEFITS

• TPS62770: fully adjustable Vout:

- buck conversion: from 1V to 3V. - boost conversion: up to 15V.

• Due to lowest Iq, longer batt-life time

• Total Solution is ~ 21mm², 12% smaller than using discretes with TPS62743 and TPS61046 separately

24

47

Ultra Low Iq: 0.5 µA

Drop out Voltage: 130 mV @ 150 mA

Stable with 1µF Ceramic Output Capacitor

TSOT23-5 Package

2x2mm SON 6 Package

Ideal for Power sensitive application

Increased battery life

Small size solution

Low Profile industry standard package

Thermally enhanced packaged 45% smaller than TSOT-

23 package

TI MSP430 Attach applications

Wireless Handsets

Portable Media Players

Battery Operated devices with extended sleep times

TPS782xx 150mA Ultra-Low Iq LDO

EVM

DDC

(SOT23)

3mm x 3mm`

DRV

(SON 6)2mm x 2mm

VOUT

GNDN/C

EN

GND

(Top View)

GND

EN

GND

GND

VOUT

VIN

VIN

3.0V

VSS

VCC

MSP430

Or

Equivalent

VIN

EN

VOUT

GND

TPS782301uF 1uF

ON

OFF

3.6V

Battery

Device VIN IOUT VDO IQ Package

TPS782xx 2.2 – 5.5 150mA 130mV 0.5µA DDC, DRV TPS78230EVM-445

48

bq2404x/5x 1A Linear Charger in 2x2 QFN with D+/D- Based Adapter Detection

• Single input AC/USB Li-Ion charger compatible with mini-USB interface

• 28V maximum input voltage with OVP at 6.5V

• Support applications for very low charge currents (i.e 30 – 50mA and above).

• Automatic AC/USB detection using integrated D+/D- pins (bq24050)

• Adjustable Pre-Charge/Termination Current (5% - 50% ISET)

• V(IN) based current reduction loop for USB applications

• Thermal Regulation Loop: Charge current clamping as die temperature increases

• TS pin to monitor pack temperature (NTC) during charging

– Compatible with JEITA safety standard

• Status pins: CHG, PGOOD

• Fixed pre-charge and safety timers

• 2x2 mm 10 pin thermally enhanced power pad packages

1

2

3

4

5

10

9

8

7

6

IN

ISET

VSS

PRETERM

D+ D-

ISET2

CHG

TS

OUT

bq24050/2

25

49

Wearable charger: BQ25100 Ultra small 250mA Linear Charger in 0.9mm x 1.6mm WCSP

1. NEW! Ultra small 0.9mm x 1.6mm WCSP package.

Industry smallest single cell charger. Save 40% space for total solution.

2. NEW! Accurate charge current control at very low level Programmable charge current down to 10mA. Ideal for very small battery capacity. 3. NEW! 1mA Termination current with 25% accuracy Prevent pre-mature battery from termination, maximize battery life with the desired regulation voltage.

4. Adjustable Pre-charge/Termination current Range from 5% -50% of fast charge current. Offers great flexibility to satisfy the requirements of different batteries.

5. TS to monitor pack temperature (NTC) during charging Compatible with JEITA safety standard. Control the charging in high and low temperatures and provide protection to battery pack.

6. Compatible with mini/micro-USB interface Applicable for the two most wildly used interfaces for portable applications.

7. Wide input voltage range 30V maximum input voltage with OVP at 6.5V provides the robustness against unstable input signals and the flexibility for high voltage applications.

8. Low BAT Iq – Sub 1uA

Extends battery run time by reducing leakage current from the battery due to the charger. Critical for small capacity batteries.

Smallest size & Maximized battery life!!!

Part Number Preterm or /CHG Battery Voltage

bq25100 Preterm 4.2V

bq25100H Preterm 4.35V

bq25100A Preterm 4.3V

bq25101 /CHG 4.2V

bq25101H /CHG 4.35V

Top View

50

Why Wireless Power into Wearables?

• Connector is failure point for most products due to humidity,

corrosion, etc..

• Using wireless power allows:

– No USB input hermetically sealed devices

– Promotes easy to charge use case with custom dock

– RX can be Qi compliant and TX can be custom

26

51

52

27

53

53

bq51013/50/10B: Cost Efficient, <5W WPC1.1 Wireless Power Receiver

BQ5105x

BQ51013+ Linear Charger

BQ51013+ Switching Charger

TX RX Battery Charger

• 2nd Generation Wireless Power Receiver Family

• Smallest solution Size

• Small 3.0 x 2.0x 0.5mm CSP or QFN Package

• Fully integrates critical RX Functions

• Fully WPC1.1 Compliant w/ FOD Protection

• Critical Features include:

• Powerpath to auto selects AC/USB or Wireless

Input

• Adjustable Current Limit and Coil Overvoltage

protection

• bq51050B removes need for extra Battery Charger

Part Number Arch Output

bq51013B Power

Supply

5V

bq51010B 7V

bq5105XB Direct

Charge 4.2/4.35 V

bq51003 Power

Supply 5V/2.5W

54

Wearable wireless power: BQ51003 Ultra low power 2.5W wireless power solution

Lowest Power, Smallest Size & Highest Efficiency!!

28

55

Wireless Charging for Wearables

56

TI Designs to demonstrate performance and simplify product development

• TI Receiver design: http://www.ti.com/tool/TIDA-00318 (Qi cert w/ Charger)

• TI Receiver design: http://www.ti.com/tool/TIDA-00329 (Smallest size, no Qi)

• TI Transmitter design: http://www.ti.com/tool/TIDA-00762 (bq50002 based, Non Qi)

• TI Transmitter design: http://www.ti.com/tool/TIDA-00334 (Small size, no Qi, 2.5W)

• TI Transmitter design: http://www.ti.com/tool/TIDA-00415 (Smallest, 1W no Qi)

bq51003 TIDA-00762

29

57

BQ27421: System Side Fuel Gauge

• Single Cell Li-ion Fuel Gauge with integrated LDO

• Power directly from battery

• Support embedded and removal battery

• Integrated sense resistor

• Impedance Track Technology

• Remaining Capacity and State of Charge

• Auto-compensation for aging, temperature,

rate of charge/discharge

• Configurable Alert Interrupt to Host

• Internal temperature sensor

• I2C Communication

• 9 pin CSP (1.6mm x 1.6mm x 0.5mm)

• Current Sensing without extra component

• Easy to use with minimum configuration

• Small Footprint Package

Applications

• Tablet PC’s

• Portable Handsets, Smart phones

• MP3 Players, Digital Cameras

Features Benefits

Typical Application Schematic

TI 针对可穿戴的生物信号调理方案 ——光学生物传感器AFE、线性震动马达驱动、接触式体温传感器

58 Contributions by: Praveen Aroul PhD, Lijoy Philipose, Karthikeyan Soundarapandian, Anand Udupa

Haroad Chen

信号链现场应用工程师，TI 技术委员会委员

30

内容简介

• 原理: PulseOx, Optical HRM

• AFE44XX功能介绍

• HRM系统设计挑战和AFE44XX的解决方案

• TI’s Optical HRM Ecosystem

• TI 线性震动马达和体温传感器介绍

59

脉搏血氧仪(PulseOx) 和 心率监测(HRM)

• 脉搏血氧仪: 测量血液的氧饱和度和心率

– 病人, 麻醉, 新生儿，健身

– 睡眠监测, 极限运动

• 其它生物信号监测: 心率变异性, 最大摄氧能力 等

注: AFE44xx 也可用于其它工业测光应用(任何需要光电检测的应用). AFE4490 可以驱动200mA LED 电流和工业级温度范围: -

40C to 85C.

60

31

原理 –脉搏血氧(氧饱和度) • 脉搏血氧主要是测量氧饱和度

• 在红光区，约660nm,脱氧血红蛋白比氧合血红蛋白有更高的吸收效应，而在近红外区 940nm附近，就相对低些。

• 如果采用两个对氧合血红蛋白和脱氧血红蛋白的吸收系数不同，不同波长的光（通常是红光和红外光）进行测量，SpO2

就可以通过比例计算的方式得出

• 光电容积描记法（PPG）有两种方式

--透射式和反射式.

--以朗伯 比尔定律（The Lam-bert-Beer Law）和光散

射理论为基础

• 光电二极管将光信号转换成电信号，AFE44XX 就可

以调理这个电信号并通过AD转换成数字信号给MCU进行处理

61

原理 –脉搏血氧(氧饱和度) • PPG 信号幅度取决于每个心脏心动周期泵出的血液量，血液对光的吸收量，皮肤对光的吸收量，皮下组

织对光的吸收量等

• 我们称PPG的脉动信号为交流分量；非脉动信号，主要是静脉血，皮肤，组织的光吸收信号，为直流分量

• 归一化 就和氧饱和度近似相关：

62

Sig

nal

Mag

nit

ud

e

Varies from

Person to person

Depends on

Mechanical design

Depends on

Optical sensor design

Cross talk due to

reflection from Glass

Ambient Light

Skin Pigmentation DC

Venous + Arterial DC

32

原理 –光电心率监测

• 如果采用合适的算法， PPG信号就可以和心脏的脉动信号拟合，这样就可以通过PPG信号来监测心脏跳动信息。

63

Sig

nal

Mag

nit

ud

e

Varies from

Person to person

Depends on

Mechanical design

Depends on

Optical sensor design

Cross talk due to reflection from Glass

Ambient Light

Skin Pigmentation DC

Venous + Arterial DC

Heart Beat

PPG信号特征

• PPG 脉动信号 (AC) + DC

– 脉动信号 动脉血

– DC 静止组成部分(如组织，静脉血，皮肤，保护罩等）

• Iac/Idc 灌注指数 (PI) ~ 0.05%- 0.5%

• AC freq. 0.3 – 4Hz

64

• 虽然PPG信号是低频的，但我们还是采用脉冲发光和光电转

换来采集， 节约功耗

• 每个LED发光脉冲就是PPG信号的采样，然后光电二极管就采集接收到的光信号强度 光电二极管输出就是高带宽信号

33

65

光电生物信号测量的挑战

Challenges

低功耗，更长的电池使用时间

肤色的差异性

抗运动消噪算法

保护膜的透光性

低温性能

抗环境光的影响

Solutions in the market

today are either

- Too big!

- Just don’t work!

AFE4404/5—脉搏血氧和心率监测的高性能模拟前端

66

Sensors

LEDs

MCU

Oxygen

saturation,

Heart Rate, and

other biometric

parameters

Photodiode

Sensors

34

67

AFE4490 AFE4400 AFE4403 AFE4404

Applications Clinical Grade Pulse-ox Finger Clip Pulse-ox, Wearables, Wearables,

Wearable Clinical Pulse-ox Patches Optical Bio-Sensing

Transmit

Path

Integrated LED Driver 2 LEDs in either H-bridge or common anode configuration 2 LEDs in either H-bridge of common anode config. + 3rd

LED in common anode config.

3 LEDs in common anode

config.

LED Driver Supply Min Voltage 1V above VLED 0.5V above VLED 0.5V above VLED

Dynamic Range (dB) 110 dB 95 dB 110 dB 100 dB

LED Current Programmable up to 200mA with 8-bit current resolution

Programmable up to 50mA with 8-bit current resolution

Programmable up to 100mA with 8-bit current resolution

Programmable up to 50mA with

6-bit current resolution

LED On Time Programmable from 50μS to 4mS Programmable from 50μS

Independent Current Reference

For Red and IR LEDs Separate LED1 and LED2 current reference

Separate LED1, LED2 and LED3

current reference

Receive Path

Dynamic Range (dB) 105 dB 100 dB 105 dB 100 dB

TIA with Separate Red and IR

Settings Programmable LED1 and LED2 settings

Analog Ambient Cancellation

Scheme Selectable 1μA to 10μA ambient current

Selectable +/-7.5μA

cancellation

(separate for each phase)

Flexible Sequencing and Timing Yes

External Input Clock Frequency 8Mhz ± 2% 4-60Mhz 4-60Mhz

Crystal Clock Frequency Range 8Mhz ± 2% 8-24Mhz N/A

Integrated Fault Diagnosctics LED and photodiode open/short detect Photodiode fault detect

Power Supply Rx: 2V to 3.6V. Tx: 3V to 5.25V Rx: 2V to 3.6V. Tx: 3V to 5.25V.

IO: 1.8 to 3.6V

Dynamic Rx Power Saving Mode N/A Yes Yes

Specified Temperature Range -40 deg C to 85 deg C 0 deg C to 70 deg C -20 deg C to 70 deg C -20 deg C to 70 deg C

Interface Serial SPI I2C

SPI Tristate Shared with other pins Separate bit control N/A

Package size/Type 40-pin QFN, 6 x 6 x 0.85 mm 40-pin QFN, 6 x 6 x 0.85

mm DSBGA 3 x 3 x 0.5 mm DSBGA 2.6 x 1.6 x 0.5 mm

AFE44xx Comparison

AFE44XX 工作流程

68

MCU

MC

U

PRF: 采样脉冲重复频率: 10SPS to 1000 SPS

35

动态功率控制模式

• PDN_CYCLE 可以在每个脉冲重复周期内，在发光，采样转换完成后，关掉AFE44XX内部的一些模块，来进一步降低功耗

• 采样PDN_CYCLE控制模式，AFE44XX 可以降低35%-70%的功耗

• The DYNAMIC1 (TX模块), DYNAMIC2 (ADC 模块), DYNAMIC3 (TIA 模块), and DYNAMIC4 (ADC其它部分) 控制位 决定哪些模块在PDN_CYCLE 中会关掉（PDN_CYCLE is high)

69

AFE44XX 如何降功耗并延长电池寿命： 动态功率控制实例

70

Amb sample,

LED & Amb conv

LED On

Rx power down

50us300us

20ms

Cur

rent

Pro

fie (m

A)

Time (sec)

20mA

620uA

0.25% duty cycle at 50Hz PRF: 50 usec

Rx circuit powered down for 98% of the time Total average current for continuous

operation: Approx. 200uA including LED current (150uA for Rx, 50uA for LED)

36

AFE44XX Receiver - TIA

71

Photodiode

• (PD) 模型可简化为电容Cin 和电流源 lin 的并联。

• 电流大小(lin) 随PPG信号幅度改变.

• 大 PD 更大的电流 更好的信噪比SNR

• VTIA = VTIA+ - VTIA- = 2 x lin x Rf.

– Where Rf = {2 MΩ, 1 MΩ, 500 kΩ,

250 kΩ, 100 kΩ, 50 kΩ, 25 kΩ, 10 kΩ}

• TIA 输出范围 +/-1V

• ADC 满刻度输入范围 +/-1.2V.

• TIA 需要足够高的带宽 时间常量 Cf x Rf 设在 1/5th 到 1/10th 的 脉宽（LED发光时间）

使方波信号更好通过

• 如, 如果采用50 usec 的脉宽, 时间常量 Rf*Cf 需要设在5-10 us. 如果 TIA 的gain (Rf) 设为1MOhm, Cf 就应当为 5 pF

(5e-6 / 1e6 = 5e-12) 或 10 pF.

– Cf 2.5pF, 5 pF, 7.5 pF, 10 pF, 17.5 pF, 20 pF, 22.5 pF and 25 pF.

AFE44XX Receiver – 采用和保持滤波器

• PD输出的电信号带宽很高(LED 的发光脉冲采样PPG信号).

• 另外，AFE也需要很高的带宽使光电管的输出脉冲更真实的给到 ADC，但是我们又需要减小带宽, 来降低ADC的输入端的噪声。 AFE44XX 内部创新结构可以非常好的解决这个问题

• AFE44XX每个单独的采样周期 (LED2, LED3 / AMB2, LED1, AMB1) 可以设置对应的独立的滤波器，来匹配相应的

TIA 的输出信号，并在ADC的采样时间内，建立至相应的幅度

72

Red

Red

Ambient

IR

IR

Ambient

37

AFE44XX Receiver –DC校正机制

• 环境光 (很高的DC信号) 问题:

– 造成整个信号链路饱和

– 降低信噪比

• 保护罩反射LED的光，也会带来很高的DC信号

• 环境光抵消:

– AFE44XX 有独立的周期来采样和转换环境光. 环境光的数值可以从每个LED采样值中减掉，这样就可以消除PPG采样信号中环境光带来的噪声。

– AFE4404/5的TIA输入端有DC失调抵消DAC，可以提供相对应的反向电流(-7 uA to 7 uA， 0.47uA 步进)，来抵消TIA输入端的直流分量。

– 更高的 TIA 增益可以得到更大的AC信号

• 后端处理器可以根据环境光/反射光的数值来评估光的泄漏的大小，并通过设置电流DAC来尽可能的消除

• 这样就可以是机械设计和光学设计更简单

• 可以减小整个系统的功耗

73

The current to voltage gain in the TIA after applying the offset DAC current is given by 𝑉𝑇𝐼𝐴 𝑑𝑖𝑓𝑓 = 𝑉𝑇𝐼𝐴

+−𝑉𝑇𝐼𝐴

−= 2 ∗ 𝐼𝑝𝑑 − 𝐼𝑜𝑓𝑓𝑠𝑒𝑡 ∗ 𝑅𝑓

TIA

Performance with Glass – DC offset correction Participant A - High Perfusion Case

Settings AC DC AC/DC

Simulate current

solutions on market.

Sealed with Glass

(real wearables)Not in others' solutions LED1: 12mA, TIA gain: 250K Ohm 2 mV 650 mV 3.0E-3

Study Case A

Participant A

High PerfusionPhotodiode/LED

condition

Offset Subtraction DAC

condition

Settings AC DC AC/DC

With AFE4404Sealed with Glass

(real wearables)AFE4404 Ready LED1: 12mA, TIA gain: 250K Ohm. DAC: 1uA 15 mV 430 mV 34.9E-3

Study Case A

Participant A

High PerfusionPhotodiode/LED

condition

Offset Subtraction DAC

condition

3.5mV

2mV

15mV

With Glass/No DC Correction

With Glass & DC Correction

No Glass, No DC correction

38

Performance with Glass – DC offset correction Participant B – Low Perfusion Case

Settings AC DC AC/DC

Simulate current

solutions on market.

Sealed with Glass

(real wearables)Not in others' solutions LED1: 12mA, TIA gain: 250K Ohm (same as A) 0.2 mV 770 mV 0.9E-3

Offset Subtraction DAC

conditionStudy Case B

Participant B

Low PerfusionPhotodiode/LED

condition

1mV

0.2mV

With Glass/No DC Correction

No Glass, No DC correction

Settings AC DC AC/DC

With AFE4404Sealed with Glass

(real wearables)AFE4404 Ready

LED1: 25mA, TIA gain: 2M Ohm. DAC: 2.5 uA

(8X TIA gain, no problem)2.5 mV 260 mV 9.6E-3

Offset Subtraction DAC

conditionStudy Case B

Participant B

Low PerfusionPhotodiode/LED

condition

2.5mV, 12.5X better

With Glass & DC Correction

Settings AC DC AC/DC

Simulate current

solutions on market.

No Glass

(not real product)Not in others' solutions LED1: 12mA, TIA gain: 250K Ohm (same as A) 1 mV 68 mV 14.7E-3

Offset Subtraction DAC

conditionStudy Case B

Participant B

Low PerfusionPhotodiode/LED

condition

静止和运动时的心率监测

AFE44xx 在运动和静止环境下的优点:

医疗级别的内核，100+ dB TX & RX 动态范围，这样在弱信号时也能得到很好的SNR

高SNR的内核，可以让用户采用更小的LED电流，从而降低功耗

DC抵消 DAC 可以使交流信号进一步放大（因为DC已尽可能减小，可以采用更大的TIA增益放大交流信号）.

信号链路的专利架构，进一步降低噪声

76

即使是在静止时，DC分量会突然改变，因为一些生理机能的因素，如呼吸和肌肉移动等。

在运动时，PPG信号可能会被淹没.为了更好在运动时测量心率，可以采用加速度计来估算运动因素，并在算法里做相应的处理.

39

AFE4404EVM

传感器连接线

AFE44XX寄存器控制和波形显示的图形界面

带NJRC NJL5310R (2G + PD) and OSRAM SFH7050 (1G/1R/1IR + PD) sensor boards

77

78

TI Information - NDA

Why TI ?

LED +

PD

AFE for

max

battery life

Calibration

Algorithm

Level 1

HRM

Motion

Level2

Algorithms

Android support

Best quality PPG signal

with glass, ambient light,

across skin tone with

Lowest Total power (<≈200uA) NJRC/OSRAM

AFE4404 (PPS960) Partron

USI Module

• Single hardware enabling measurement of parameters including

HR, HRV, Energy Exp, Vo2, Vo2max, SpO2, heart health etc.

• Having AFE separate from LED & PD gives flexibility to adjust optics for lowest power.

• Better signal quality, Lowest power, additional parameters against competition.

40

TI’s Optical HRM Ecosystem

Integrated LED and Photodiode sensor board

LED + PD + AFE Module

Algorithms for Motion Cancellation, SpO2, HRM, HR variability (stress, emotion…), VO2max (the

amount of oxygen the body is capable of utilizing in one minute), Calorie intake, etc

Turnkey/Reference Design 79

Discreted

LED + PD

Integrated

LED + PD

Processor

and other

components

Calibration

Algorithm

for Right

AFE

Settings

(from TI)

Algorithms

1

2 3 4

1 2

3

4

• Measure pulse from veins in wrist using the AFE4400

• MSP430F5528 microcontroller for holding algorithm and

motion cancellation calibration data

• BLE module connection featuring TI‘s CC2541

• BQ24072 USB charger and BQ27425-G1 fuel gauge

devices for battery management

• Accelerate and simplify your wrist based HRM design

while ensuring measurement performance needed for

Fitness designs

• Easy connectivity to BLE enabled smartphones, tablets,

etc.

• Ultra-low power consumption

Solution Features

TI Designs TIDA-00011: Optical Heart Rate Monitor Reference Design with BLE

Connectivity

Solution Benefits

Tools & Resources

• http://www.ti.com/tool/TID

A-00011

• Includes

• Schematics

• Layout

• Gerber files

• BOM

41

Eccentric Rotating

Mass (ERM)

转子马达

DRV2625--线性马达驱动器

81

Linear Resonant

Actuator (LRA)

线性马达

Voltage 1 – 10 VDC 2.5 – 10 VDC

Acceleration (G) ~1 ~1-2

Power Consumption Good Best

Freq. Response Limited Limited

Audible Noise Very Noisy Moderately Noisy

Response Time 40 – 80 ms 20 – 30 ms

Waveform DC Voltage Sine Wave

Min. Size (mm) Ø5 x 8 long Ø10 x 3 high

HD Haptics No No

* Based on current market devices

Lowest Cost, Lowest Performance Medium Cost, Medium Performance

Frequency (Hz)

Str

ength

LRA

170 180 175

频偏2.5Hz导致振动量减少40% 制造误差 器件老化 温度影响 固定方法和安装位置

81

谐振频率偏移

自动谐振频率追踪

• 输出驱动频率跟踪振子的谐振频率

• 针对LRA线性马达

• 谐振频率追踪是实时的

• 谐振频率在振动的过程中发生了变化也可以追踪到

解决线性马达振子频响的高Q值问题的必要性

• 同样的振动强度，驱动在谐振频率点的功耗能降低50%

• 不用频率追踪技术就无法实现有效的启动和停止!振动效果差

• 驱动频率偏移谐振点会导致振动强度快速减弱

• 手机和平板

• 运动手环智能手表等穿戴式设备

• 触控设备

• 遥控器鼠标等外设

• 人机界面

• 直接连接电池

• 更长的电池工作时间

• 清脆和一致的振动效果

• 简单易用

• 兼容市场上所有振子

• 配置灵活

• 低延迟振动控制

• 检测振子失效，方便生产测试，提高产品安全性

DRV2625 低电压LRA/ERM振子驱动

• 超低关机功耗 (< 500 nA)

• 自动进入待机模式 (< 2 uA)

• 电池电压监控

• 自动谐振频率追踪

• 自动过驱动启动和刹车

• 正弦波输出失谐驱动

• 开环驱动下自动刹车功能

• 单线触发模式

• 集成振动效果库

• 基于负载阻抗测量的振子诊断

Features Benefits

Applications

I2C

I/F

REG

Back-EMF

Detection

Control and Playback Engine

MLRA

or

ERM

OUT–

GND

REG

TRIG/INTZ

SDA

SCL

NRST

Brownout

Protection

Supply

Correction

Automatic

Over-Drive

and Braking

Gate

Drive

VDD

Automatic Resonance Tracking

and Reporting

Waveform Shape

Select (LRA)

Gate

Drive

VDD

OUT+

VDD ROMReg

Map2.7 V – 5.5 V

1.8 V

Loopable

Waveform

Sequencer

Dynamic and

Programmable

Output Clamp

Impedance

Based Actuator

DiagnosticsShort Circuit

Protection

Off-

Resonance

Driving (LRA)

Thermal

Protection

Battery

Monitor

42

Applications

Features Benefits

LMT70 + 0.1ºC 高精密模拟温度传感器

• 测量精度/误差: • ±0.065°C max(3 sigma) from 20°C to 42°C • ±0.13°C max(6 sigma) from 20°C to 42°C • ±0.36°C max from -55°C to 150°C

• 供电范围： 2.0V to 5.5V • 功耗：<12uA • 线性输出斜率: -5.19mV/°C • 0.88mm x 0.88mm WLCSP package

• 体温测量 • Industrial RTD (Class AA) or 高精度NTC升级替换

• 表计温度补偿

• 在人体温度范围，误差<+/-0.1C，无需校准

• 节约生产时温度校准流程，提高生产效率

• 超低功耗

• 超小体积

84

选型 设计 支持 购买

• 10万种产品覆盖电源、处

理器、无线连接、音频、放大器、时钟、DLP、传感、电机驱动等

• 提供工业、汽车、通信设备、个人消费电子等应用

系统级解决方案

• 提供交叉参照搜索多个

供应商的产品

TI.com.cn：为您提供一站式体验

• 全球响应，数万样片开

发板任君选择，尽在TI

Store

myTI账户：个性化服务及定制

• 7/24在线支持社区, 技

术疑难解答、海量技术博文分享

• 全年无歇在线培训，理论基础、动手实验，为您充电加油

Deyisupport (中文）

E2E (英文)

• 2500款TI Designs参考设计，覆盖工业、汽车、医疗、个人消费电子等应用领域

• 提供定制电源、照明、滤波、时钟和传感设计

的WEBENCH® 设计

中心

43

myTI 账户: 专属您的私人订制

85

https://my.ti.com 加入myTI 会员的好处: • TIstore 一站式购物平台， 数万样片

开发工具，一网打尽

• 参与 TI 在线技术支持社区

• 利用 WEBENCH® 设计工具轻松进行设计

和模拟

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• 提供包括从理论基础到深入的动手实验在内的各种在线和现场的培训，协助您将新一代的设计化为现实。我们整合式的培训项目包括

1000+ 的线上培训课程，网络研讨会和线下研讨会，有助于您使用TI产品，开发工具，软件和各类应用设计。

86

经典热门课程：

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