WT7517 datasheet - Hardware Secrets · N164/S164 X N165/S165 3.25V O 38ms 73us 2.0V N166/S166 X N167/S167 2.45V 2.85V O 19ms 75ms / 300ms 27us 3.6V WT7517 N183/S183 X X X 19ms 75ms

偉詮電子股份有限公司 Weltrend Semiconductor, Inc.

新竹市科學工業園區工業東九路24號2樓 2F, No. 24, Industry E. 9th RD., Science-Based Industrial Park, Hsin-Chu, Taiwan TEL:886-3-5780241 FAX:886-3-5794278.5770419 Email:[email protected]

`

WT7517

PC POWER SUPPLY SUPERVISOR

Data Sheet

REV. 4.20

December 08, 2004 The information in this document is subject to change without notice. Weltrend Semiconductor, Inc. All Rights Reserved.

WT7517 Rev. 4.20

Weltrend Semiconductor, Inc. Page 2

GENERAL DESCRIPTION

The WT7517 is semiconductor integrated circuits designed for Server System switching power supply. It provides protection circuits, power good output (PGO), fault protection latch (FPOB), and a PSONB control. The Over Voltage Detector (OVD) and Under Voltage Detector (UVD) are monitor V33, V5, V12A and V12B within WT7517–164~167 and V12C within WT7517–183. The Over Current Detector (OCD) is monitor IS33, IS5, IS12A and IS12B within WT7517–164~167 and IS12C within WT7517–183. The Over Temperature Protection (OTP) input has hysteresis function. In OTP condition the WT7517 will shut–down. When the OTP input has low level WT7517 shall restart power automatically.

WT7517-165/167 has FAN C function in OTP/FC pin .The output PWM is active low.

FEATURES • The Over / Under Voltage Detector (OVD / UVD) monitors 3.3V, 5V, 12VA, 12VB and 12VC input

voltage level. • The Over Current Detector (OCD) monitors IS33, IS5, IS12A, IS12B and IS12C input current sense. • Both of the power good output (PGO) and fault protection latch (FPOB) are Open Drain Output. • 75ms / 300ms time delay for UVD. • 300ms time delay for PGO. • 38ms / 19ms for PSONB input signal De–bounce. • 73us / 27us for Internal signal De–glitches. • 2.4ms time delay for PSONB turn-off FPOB.

PIN ASSIGNMENT AND PACKAGE TYPE

PGI

GND

FPOB

PSONB

NC

RI

VS12B

IS12B

VS12C

PGO

VCC

VS5

IS5

VS33

IS33

VS12A

IS12A

IS12C

18

17

16

15

14

13

12

11

10

1

2

3

4

5

6

7

8

9

WT7517–183WT

PGO

VCC

VS5

IS5

VS33

IS33

VS12A

IS12A

PGI

GND

FPOB

PSONB

OTP

RI

VS12B

IS12B

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

WT7517–164/166WT

PGO

VCC

VS5

IS5

VS33

IS33

VS12A

IS12AB

PGI

GND

FPOB

PSONB

OTP/FC

RI

VS12B

PWM

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

WT7517–165/167WT

WT7517 Rev. 4.20


FUNCTION DESCRIPTION

ORDERING OTP low level

OTP high level FC / PWM tdb1

tdb2 tdelay3 tg2 Vcc low voltage

N164/S164 X N165/S165

3.25V O

38ms 73us 2.0V

N166/S166 X N167/S167

2.45V 2.85V

O 19ms

75ms / 300ms 27us 3.6V

WT7517

N183/S183 X X X 19ms 75ms 19us 2.6V PIN DESCRIPTION Pin Name TYPE Description

PGI I Power good input signal pin GND P Ground FPOB O Fault protection output pin, open drain output PSONB I On/Off switch input OTP/FC I Over temperature protection / Fan C RI I Current sense adjust input PWM O Pulse width modulation VX I Extra Over current protection sense input IX I Extra Over current protection sense input VXUN I Extra Under voltage input pin, when VXUN < 1.2V then UVP action VXOV I Extra Over voltage input pin, when VXOV > 1.2V then OVP action IS33 I 3.3V over current protection sense input VS33 I 3.3V over/under voltage input pin IS5 I 5V over current protection sense input VS5 I 5V over/under voltage input pin IS12A I 12V over current protection sense input VS12A I 12V over/under voltage input pin VS12B I 12V over/under voltage input pin IS12B I 12V over current protection sense input VS12C I 12V over/under voltage input pin IS12C I 12V over current protection sense input VCC I Power supply PGO O Power good output signal pin, open drain output

ORDERING INFORMATION

PACKAGE Plastic DIP–16 Plastic SOP–16 Plastic SOP–16 with reel（Reel of 2500ea）

WT7517–N164WT WT7517–N165WT WT7517–N166WT WT7517–N167WT

WT7517–S164WT WT7517–S165WT WT7517–S166WT WT7517–S167WT

WT7517–S164WT–reel WT7517–S165WT–reel WT7517–S166WT–reel WT7517–S167WT–reel

Lead–Free（Pb）

WT7517–N164WT Pb WT7517–N165WT Pb WT7517–N166WT Pb WT7517–N167WT Pb

WT7517–S164WT Pb WT7517–S165WT Pb WT7517–S166WT Pb WT7517–S167WT Pb

WT7517–S164WT–reel Pb WT7517–S165WT–reel Pb WT7517–S166WT–reel Pb WT7517–S167WT–reel Pb

PACKAGE Plastic DIP–18 Plastic SOP–18 Plastic SOP–18 with reel（Reel of 1000ea）

WT7517–N183WT WT7517–S183WT WT7517–S183WT–reel Lead–Free（Pb） WT7517–N183WT Pb WT7517–S183WT Pb WT7517–S183WT–reel Pb

※ The Top-Side Marking would been added a dot（●）in the right side for lead-free package.

WT7517 Rev. 4.20


ABSOLUTE MAXIMUM RATINGS Parameter Min. Max. Unit

Supply voltage, VCC –0.3 16 V PSONB, V5, V33, PGI, OTP –0.3 7 V V12n, VX, VXUN, VXOV –0.3 16

Input voltage

I12n, I5, I33, IX –0.3 V12A+0.3 V Output voltage FPOB, PGO –0.3 VCC+0.3 V Operating temperature -40 125 ℃ Storage temperature -55 150 ℃ *Note: Stresses above those listed may cause permanent damage to the devices

RECOMMENDED OPERATING CONDITIONS Parameter Conditions Min. Typ. Max. Unit

Supply voltage, VCC 4 12 15 V PSONB, V5, V33, PGI, OTP 7 V V12n 15

Input voltage

I12n, I5, I33, IX 15 V Output voltage FPOB, PGO 7 V

FPOB 30 mA Output sink current PGO 10 mA

VCC rising time 1 ms Output current for RI RI 10 65 uA

ELECTRICAL CHARACTERISTICS, at Ta=25°C and VCC=5V and V12A=12V. Over Voltage Detection

Parameter Condition Min. Typ. Max. Unit V33 3.7 3.9 4.1 V V5 5.7 5.95 6.2 V V12n

164~167

13.3 13.8 14.3 V V33 3.7 3.8 3.9 V

Over voltage threshold

V5 5.7 5.8 5.9 V V12n

Only for 183

13.3 13.6 13.9 V ILEAKAGE Leakage current (FPOB) V(FPOB) = 5V 5 uA

Isink =10mA 0.3 VOL Low level output voltage (FPOB) Isink =30mA 0.7

V

PGI and PGO

Parameter Condition Min. Typ. Max. Unit V33 2.55 2.69 2.83 V V5 4.1 4.3 4.47 V

Under voltage threshold

V12n 9.5 10 10.5 V Input threshold voltage(PGI) 1.16 1.20 1.24 V ILEAKAGE Leakage current(PGO) PGO = 5V 5 uA VOL Low level output voltage(PGO) Isink =10mA 0.4 V Input offset voltage of OCP comparators -5 5 mV

WT7517 Rev. 4.20


PSONB Parameter Condition Min. Typ. Max. Unit

Input pull–up current PSONB= 0V 150 uA High–level input voltage 2.0 V Low–level input voltage 0.8 V TOTAL DEVICE

Parameter Condition Min. Typ. Max. Unit Icc Supply current PDON _N= 5V 1 mA Vcc low voltage 164 / 165 2.0 V 166 / 167 3.6 V 183 2.6 V SWITCHING CHARACTERISTICS

Parameter Condition Min. Typ. Max. Unit 164 / 165 32 38 61 ms tdb1,tdb2 De–bounce time (PSONB) 166 / 167 14 19 24 ms

tdelay1 Delay time (PGI to PGO) 200 300 490 ms tg1 De–glitch time 63 73 120 us

164 / 165 63 73 120 us 166 / 167 15 27 45 us

tg2 De–glitch time for latch

183 6 19 21 us tdelay2 PSONB to FPOB delay time tdb2+2.0 tdb2+2.4 tdb2+3.8 ms

after FPOB go low & PGI > 1.2V

65 75 122 ms tdelay3 Internal UVD/OCD delay time

after FPOB go low & PGI < 1.2V

260 300 488 ms

tdelay3 Internal UVD/OCD delay time 183 65 75 122 ms OTP / FC and PWM

Parameter Condition Min. Typ. Max. Unit 166/167 2.70 2.85 3.00 V OTP High–level input voltage 164/165 3.10 3.25 3.40 V

OTP Low–level input voltage 2.30 2.45 2.60 V FC start–up voltage 0.7 0.8 0.9 V FC stop voltage 0.55 0.65 0.75 V fPWM PWM frequency 28 35 42 KHz ILEAKAGE Leakage current(PWM) 5 uA VOL Low level output voltage(PWM) Isink =4mA 0.4 V VOH High level output voltage(PWM) Isource =4mA V12A–0.4 V

WT7517 Rev. 4.20


BLOCK DIAGRAM WT7517–164/166WT

R

S Q

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

VCC

VCCI

PSONB

OTP

VS33

VS5

VS12A

FPOBVS12B

PGO

VREFPGI

IS33

IS5

RI

IS12A

IS12B

27us for 16673us for 164

73us

73us / 27uS

0.8V ~ 2.0V

2.4V ~ 3.2V for 1642.4V ~ 2.8V for 166

WT7517-164/166 BLOCK DIAGRAM

38ms for 16419ms for 166

Power

Reference

Internal

Bandgap

OSC

PWR

CLK

VCCI = 3.6V

VREF = 1.2V

Power On Reset PWR

75ms / 300ms

2.4ms

IREF * 8

IREF * 8

IREF * 8

IREF * 8

V12A

V12A

V12A

V12A

RST

debounce delayclr

300ms

RST

debounce

clrdelay

PWR

38msdebounce

UN

UN

OV

UN

OV

UN

OV

OV

IREF=VREF / RI

V12A

V12A

VREF = 1.2V

UN

RSTclr

delay

WT7517 Rev. 4.20


WT7517–165/167WT

R

S Q

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

VCC

OTP/FC

PWMVCCI

PSONB

OTP/FC

VS33

VS5

VS12A

FPOBVS12B

PGO

VREFPGI

IS33

IS5

RI

IS12AB

0.8V ~ 2.0V

73us for 16527us for 167

73us

73us / 27us

WT7517-165/167 BLOCK DIAGRAM

2.4V ~ 2.8V for 1672.4V ~ 3.2V for 165

38ms for 16519ms for 167

PWM

ReferenceBandgap

PowerInternal

VCCI = 3.6V

VREF = 1.2V

OSC

PWR

CLK

0.6V ~ 0.8V

PWRPower On Reset

75ms / 300ms

2.4ms

IREF * 8

IREF * 8

IREF * 8

IREF * 8

V12A

V12A

V12A

V12A

RST

debounce delayclr

300ms

RST

debounce

clrdelay

PWR

38msdebounce

UN

UN

OV

UN

OV

UN

OV

OV

IREF=VREF / RI

V12A

V12A

VREF = 1.2V

UN

RSTclr

delay

WT7517 Rev. 4.20


WT7517–183WT

R

S Q

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

+-

VCC

VCCI

PSONB

VS33

VS5

VS12A

VS12B

FPOBVS12C

PGO

VREFPGI

IS33

IS5

RI

IS12A

IS12B

IS12C

0.8V ~ 2.0V

75msdelay

19us

19ms

WT7517-183 BLOCK DIAGRAM

73usdebounce delay

clr300ms

V12A

IREF=VREF / RI

V12A

VREF = 1.2V

IREF * 8

V12A

UN

IREF * 8

IREF * 8

IREF * 8

IREF * 8

V12A

V12A

V12A

RST

RST

debounce

UN

OV

UN

OV

Power

Reference

Internal

Bandgap

OSC

PWR

CLK

VCCI = 3.6V

VREF = 1.2V

Power On Reset PWR

2.4msclr

delay

PWR

debounce

UN

UN

OV

UN

OV

OV

RSTclr

WT7517 Rev. 4.20


APPLICATION CIRCUIT

WT7517-164WT

IS12A

IS33

IS5

OTP

PGI

PSONB

VCC

VS12AVS12B

VS33

VS5FPOB

GND

IS12B

PGO

RI

R0=47

R0=47

OTP

PGI

+5VSB

1K

+5VSB

PSONB0.01uF

10K

300

+5VSB

30K, 1%

+12VAB input

+12VB

+12VA

+3.3V

+5V

+3.3V input

+5V input

R4, 1%22uF

22uF R3, 1%

22uF

22uF

R2, 1%

R1, 1%

1uF+5V

1K

NOTE1：For WT7517–164、165、166、167, the R0 can not be omitted at VS5 and VS33. NOTE2：For WT7517–183, the R0 can be omitted at VS5 and VS33.

APPLICATION NOTE

+-

+-VS

IS

RI

RL

R

IL

VL -+

IR

VR -+

IR=8*IREF=8* ( VREF/RI )

IREF=VREF / RI

IREF

RI

VREF = 1.2V

V12A

V12A

OCP

V12A

When the current cross inductor raised, inductor voltage raised. And when inductor voltage exceeded resistor voltage, the OCP active. We can setup OCP point by the following equation Let VR = VL R * IR = RL * IL ∵ IR = 8 * IREF R * (8 * VREF / RI) = RL * IL R = (RL * IL) / (8 * VREF / RI) ––––– (1)

WT7517 Rev. 4.20


APPLICATION TIMMING 1.) PGI (UNDER_VOLTAGE)：

PSONB / OTP

FPOB

PGO

PGI

tdb1 tdelay1+tg1

tdb2

tdelay2

PSONB /OTP

FPOB

PGO

PGI

tdb1 tdelay1+tg1

tdb2

tdelay2

tdelay1+tg1

WT7517 Rev. 4.20


2.) V33, V5, V12n (UNDER_VOLTAGE) or IS33，IS5，IS12n (OVER_CURRENT)：

PSONB / OTP

FPOB

PGO

V33/V5/V12 IS33/IS5/IS12

tdb1 tdelay1+tg1

tdb2

tdelay2

tdb1 tdelay1+tg1

tdb2

tdelay2 tdelay3+tg2

tdb1

PSONB / OTP

FPOB

PGO

PGI

V33/V5/V12 IS33/IS5/IS12

tdelay3=300mS

PSONB / OTP

FPOB

PGO

PGI

V33/V5/V12 IS33/IS5/IS12

tdb1 tdelay1+tg1

tdb2

tdelay2 tdelay3+tg2

tdb1

tdelay3=75mS

WT7517 Rev. 4.20


3.) V33, V5, V12n (OVER_VOLTAGE)：

PSONB / OTP

FPOB

PGO

V33/V5/V12

tdb1 tdelay1+tg1

tdb2

tdelay2

PSONB / OTP

FPOB

PGO

V33/V5/V12

tdb1 tdelay1+tg1

tdb2

tdelay2 tg2

tdb1

WT7517 Rev. 4.20


4.) OTP / FC, PWM, FPOB：

（at VCC=5V,PSONB=0V,V12n=12V,V5=5V, V33=3.3V）

PWM (1-duty cycle) v.s. OTP/FC input voltage

0

10

20

30

40

50

60

70

80

90

100

0.00.20.40.60.81.01.21.41.61.82.02.22.42.62.83.0OTP/FC input voltage - V

PWM (1-duty cycle) - %

OTP / FC

PWM

FPOB

fPWM

0.8V FC start–up

0.65V FC stop

2.8V OTP on

2.4V OTP off

OTP VON = 2.4V OTP VOFF = 2.8V

FC VSTART = 0.8V FC VSTOP = 0.65V

PWM ( 1 – duty cycle ) = [ V(OTP/FC) – 0.65 ] / 2.15 * 100

WT7517 Rev. 4.20


MECHANICAL INFORMATION

PLASTIC DUAL–IN–LINE PACKAGE

NOTE 1：All linear dimensions are in inches（millimeters）. NOTE 2：This drawing is subject to change without notice. NOTE 3：Falls within JEDEC MS–001

WT7517 Rev. 4.20


PLASTIC SMALL–OUTLINE 16 PACKAGE

NOTE 1：All linear dimensions are in inches（millimeters）. NOTE 2：This drawing is subject to change without notice. NOTE 3：Falls within JEDEC MS–012

WT7517 Rev. 4.20


PLASTIC SMALL–OUTLINE 18 PACKAGE

NOTE 1：All linear dimensions are in inches（millimeters）. NOTE 2：This drawing is subject to change without notice. NOTE 3：Falls within JEDEC MS–013 AB NOTE 4：Body length dimensions A does not include mold flash, protrusions or gate burrs. Mold flash, protrusions and gate burrs shall not exceed 0.006in ( 0.15mm ) per side. NOTE 5：Body width dimensions B does not include inter–lead flash or protrusions. Inter–lead flash and protrusions shall not exceed 0.010in ( 0.25mm ) per side.

WT7517 Rev. 4.20


SOP16 outline drawing of carrier tape【Unit：mm】

SOP18 outline drawing of carrier tape【Unit：mm】

A0 = 6.50 ±0.1mm B0 = 10.3 ±0.1mm K0 = 2.10 ±0.1mm

A0 = 10.9 ±0.1mm B0 = 12.0 ±0.1mm K0 = 3.2 ±0.1mm K1 = 2.8 ±0.1mm

WT7517 Rev. 4.20


SOP16 and SOP18 outline drawing of reel【Unit：mm】

Package Normal Hub Width W1（±0.3mm） W2 Max SOP16 16mm 16.4mm 22.4mm SOP18 24mm 24.4mm 30.4mm

Documents

WT7517 datasheet - Hardware Secrets · N164/S164 X N165/S165 3.25V O 38ms 73us 2.0V N166/S166 X N167/S167 2.45V 2.85V O 19ms 75ms / 300ms 27us 3.6V WT7517 N183/S183 X X X 19ms 75ms