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Product Specification

PC Power Supply Supervisors

SG6513/T

For supervisor function, it provides the over voltage

protection (OVP) monitoring for 3.3V, 5V and 12V; over

current (OCP) monitoring for 3.3V, 5V and 12V; under

voltage sense (UVS) monitoring for 3.3V, 5V and 12V;

under voltage protection (UVP) monitoring for 12V; and

over temperature protection (OTP) for SG6513T. When

3.3V, 5V or 12V voltage is decreasing to 2.8V, 4.2V and

9.9V respectively, the under voltage sense (UVS)

function will be enabled to reset the PGO signal from high

to low. If 12V voltage is further decreasing to 9V, FPO

will be set to high to turn off the PWM controller IC. The

voltage difference across external current shunt is used for

OCP functions. An external resistor can be used to adjust

protection threshold. To achieve better immunity for

lighting surge glitch and to prevent accidental power shut

down during dynamic loading condition, the de-bounce

time for UVP/OCP and UVS is 275us/125us ,350us

respectively. The deglitch time for OVP is 75uS for better

noise immunity.

The power supply is turned on after 38mS de-bounce

time when PSON signal is set from high to low. To turn

off power supply, PSON signal is set from low to high and

the de-bounce time is 115mS. The PGI circuitry provides

a sufficient power-down warning signal for PGO. When

PGI input is lower than the internal 1.2V reference

voltage, after 250uS de-bounce time, the PGO signal is

pulled low.

FEATURES OVERVIEW

Over-voltage protection (OVP) for 3.3V, 5V and

12V

Over-current protection (OCP) for 3.3V, 5V and 12V

Under-voltage sense (UVS) for 3.3V, 5V and 12V

Under-voltage protection (UVP) for 12V

Open drain output for PGO and FPO pins

300mS power good delay

75mS delay for 3.3V, 5V and 12V power turn on

2.8mS PSON control to FPO turn-off delay

38mS / 115mS PSON control De-bounce

275uS width noise deglitches

De-bounce time 125uS for UVP and OCP

De-bounce time 350uS for UVS

No lockup during the fast AC power on/off

Brownout protection function for 12V

Wide supply voltage range from 4V to 15V

Over-temperature protection (OTP) function

DESCRIPTION

SG6513 is designed to provide the voltage, current

and temperature supervisor function, remote on/off

(PSON) function, power good (PGO) indicator function,

and fault protection (FPO) function for switching power

systems.

TYPICAL APPLICATION

Io

12V

5V

3.3V

5V

Output Side

12V

5V

3.3V

SG6513

PGI

1

2

3

PSON

4

5

6

7

PGI

GND

FPO

PSON

IS12

RI

RT

PGO

VDD

VS5

VS33

VS12

IS33

IS5

14

13

12

11

10

9

8

VSB

Version 1.0PN ( IRO33.0014.B0)

-1-

www.sg.com.tw

Aug.26,2003

Product Specification

PC Power Supply Supervisors

SG6513/T

PIN CONFIGURATION

PGI

GND

FPO

PSON

IS12

RI

RT(NC)

1

2

3

4

5

6

7

14

13

12

11

10

9

8

PGO

VDD

VS5

VS33

VS12

IS33

IS5

MARKING INFORMATION

14

SG6513TZ

XXXXXXXYYWWV

T:

T = With OTP,

Null = Without OTP

Z:

D = DIP, S = SOP(No Logo)

XXXXXXX:

Wafer Lot

YY:

Year;

WW:

Week

V:

Assembly Location

1

ORDERING INFORMATION

Part Number

SG6513D

SG6513S

SG6513TD

SG6513TS

Package Type

14 pin DIP Plastic

14 pin SOIC Plastic

14 pin DIP Plastic

14 pin SOIC Plastic

Function

Without OTP

With OTP

PIN DESCRIPTIONS

Pin No. Pin Name

1

2

3

4

PGI

GND

FPO

PSON

Type

Analog input

Supply

Logic output

Logic input

Description

Power good input. For ATX SMPS, it detects AC line voltage through the main transformer.

Ground.

Fault protection output. Output signal to control the primary PWM IC through a

opto-coupler. When FPO is low, the main SMPS is operational.

Remote On/Off logic input from CPU or main-board. The power supply will be turned on/off

after 38mS / 115mS delay.

12V over current protection sense input. Regarding typical application, this pin is

connected to the positive end of a current shunt through one resistor. When the voltage on

IS12 is higher than that of VS12 by 5mV, OCP will be enabled. One current sink, 8 x Iref, is

used to determine the voltage drop between the positive end of the current shunt and

VS12. Adjusting the value of the external resistor can adjust the threshold for OCP

accordingly. The operation for IS5 or IS33 is the same.

Reference setting. One external resistor Ri connected between RI and GND pin will

determine a reference current, Iref = 1.15/Ri, for OTP and OCP programming.

Over-temperature protection. Only valid for SG6513T.

An NTC thermistor is connected from RT pin to GND. At high temperature, the impedance

5

IS12

Analog input

6

RI

Analog input

7

RT(for SG6513T)

NC( for SG6513)

Analog input

of the NTC will decrease and hence the voltage on RT will decrease. When the voltage on

RT pin is lower than 0.95V limit, the over-temperature protection will be enabled. The

internal pull high current source is equal to 5 x Iref.

8

9

10

11

IS5

IS33

VS12

VS33

Analog input

5V over current protection sense input.

3.3V over current protection sense input.

12V over/under-voltage control sense input.

3.3V over/under-voltage control sense input.

Version 1.0PN ( IRO33.0014.B0)

-2-

www.sg.com.tw

Aug.26,2003

Product Specification

PC Power Supply Supervisors

12

13

14

VS5

V

DD

PGO

Analog input

Supply

Logic output

5V over/under-voltage control sense input.

Supply voltage. 4V ~ 15V. For ATX SMPS, it is connected to 5V-standby and 12V through

diodes respectively.

Power good logic output, 0 or 1(open-drain). Power good=1 means that the power supply is

good for operation. The power good delay is 300mS.

SG6513/T

Version 1.0PN ( IRO33.0014.B0)

-3-

www.sg.com.tw

Aug.26,2003

Product Specification

PC Power Supply Supervisors

SG6513/T

BLOCK DIAGRAM

Version 1.0PN ( IRO33.0014.B0)

-4-

www.sg.com.tw

Aug.26,2003

Product Specification

PC Power Supply Supervisors

SG6513/T

FUNCTION TABLE

PGI

PGI<1.2V

PGI>1.2V

X

PSON

L

H

UV Sense

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

X

UV Protection 12V & OC Protection OV Protection FPO

No

Yes

No

Yes

No

Yes

No

Yes

X

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

X

L

H

L

H

L

H

L

H

PGO

L

H

L

x = don’t care

FPO = L means: fault IS NOT latched

FPO = H means: fault IS latched

PGO = L means: fault

PGO = H means: No fault

Version 1.0PN ( IRO33.0014.B0)

-5-

www.sg.com.tw

Aug.26,2003

SG6513

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