PS232F datasheet(8/11 Pages) SITI

Part #	PS232F

Description	6-Channel Secondary Monitoring IC

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Manufacturer	SITI [Silicon Touch Technology Inc.]

Direct Link	http://www.siti.com.tw

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8 / 11 page

點晶科技股份有限公司

SILICON TOUCH TECHNOLOGY INC.

6-Channel Secondary Monitoring IC

Version

：A.001

-7-

PS232F

Application

Typical 6 rails SPS

Notes:

1. Zener diode or resistor or both of them can be used in component X.

2. The bypass capacitor Cby suggests to be 0.1uF~ 10uF and layout nearby pin VCC.

3. The recommend sense values of RS12(1), RS12(2), RS5 and RS33 are ≥ 0.002Ω.

4. Over-Current Protection design example:

(1)

A

I

ref

μ

20

=

,

()

Ω

=

K

I

V

R

RI

I

5

.

62

20

25

.

1

μ

(2) RS5=0.002 Ω ,

ref

OC

V

I

R

I

V

×

=

×

=

Δ

+

8

002

.

0

5

(3) If +5V OCP trip point is 20A,

()

Ω

=

×

=

250

20

8

20

002

.

0

5

μ

OC

R

20

19

18

17

16

15

14

13

1

2

3

4

5

6

7

8

PGI

PSON/

RI

IS12B

VS12B

IS12A

FPO/

GND

PGO

VS33

IS33

IS5

Pext

VS12A

VS5

Vcc

PS232F

1K

+5VSB

PGO

PSON

+5VSB

=

or

S.P.S. Secondary Side

RS5

+5V Output

RS12(2)

+12V(2) Output

+12V(2) Coil

RS12(1)

+12V(1) Output

+12V(1) Coil

RS33

+3.3V Output

+3.3V Coil

Pext

12

11

9

10

VS12C

VS12D

IS12C

IS12D

RS12(3)

+12V(3) Output

+12V(3) Coil

RS12(4)

+12V(4) Output

+12V(4) Coil

0.1u

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