PS232F.pdf 데이터시트 (총 11 페이지) - 파일 다운로드 PS232F 데이타시트 다운로드

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PS232F
www.DataSheet4U.com
Version
: A.001
Issue Date : 2008/08/21
File Name : SP-PS232F-A.001.doc
Total Pages : 11
6-Channel Secondary Monitoring IC
新竹市科學園區展業一路 9 號 7 樓之 1
SILICON TOUCH TECHNOLOGY INC.
9-7F-1, Prosperity Road I, Science Based Industrial Park,
Hsin-Chu, Taiwan 300, R.O.C.
Tel886-3-5645656 Fax886-3-5645626

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點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
www.DataSheet4U.com
PS232F
PS232F
6-Channel Secondary Monitoring IC
General Description
PS232F is specially designed for switching power supply system. Four important
functions of PS232F are the followings: over-voltage protection, over-current protection,
under-voltage protection and power good signal generating.
OVP/UVP (Over-Voltage/Under-Voltage Protection) monitors 3.3V, 5V and quartic
12V to protect our power supply and PC, FPO/ goes to high when one of these supply
voltages exceeds their normal operation voltage range.
OCP (Over Current Protection) monitors IS33, IS5, IS12A, IS12B, IS12C, IS12D
input current sense. An adjustable over-current condition composed of Iref and
“protection current range resistor” helps users design OCP easily.
An additional protection input pin provides the flexibility for design protection
circuit.
Power good signal generating notifies personal computer when power supply is
ready or power supply is going to shutdown, therefore it can provide a reliable power
supply environment.
Features
Over/Under-voltage protection and lock out
Over-current protection and lock out
Additional protection input
Fault protection output with open drain output stage
Open drain power good output signal for power good input
Built-in 300mS power good delay
AC on 75ms delay for UV/OC protection
38mS PSON/ control de-bounce
Wide power supply range (3.8V~16V)
Special care for AC power off
6-Channel Secondary Monitoring IC
-1-
VersionA.001

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點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
www.DataSheet4U.com
PS232F
Block Diagram
VS12A
VS12B
VS12C
VS12D
VS5
VS33
IS12A
IS12B
IS12C
IS12D
IS5
IS33
VS
155KΩ
Vref
9KΩ
Vref
16KΩ
UV
OV
12 OV
58KΩ
13.5KΩ Vref
18.5KΩ Vref
12 UV
5 UV
5 OV
38.5KΩ
23.5KΩ Vref
28KΩ Vref
3.3 UV
3.3 OV
VS Step Down
IS to near 2.5V
Iref X 8
VCCI
OC
delay
1mS
12 OC
delay
Step Down
to near 2.5V
VCCI H : 20mS
5 OC L : 4.5uS
Iref X 8
Step Down
to near 2.5V
VCCI
3.3 OC
Iref X 8
delay
15uS
38mS
De-bounce
delay
H : 75mS
L : 4.5uS
SQ
R
delay
1MΩ
FPO/
H : 4mS
L : 4.5uS
VCCI
1.25V
VCC
30KΩ
2KΩ
PSON/
4.5V
90KΩ
Pext
2.5V
1
0
R
QS
1.13V
0.63V
PGI
1.25V
73uS
De-bounce
delay
H : 300mS
L : 4.5uS
VCCI
1MΩ
PGO
Power On
Reset
POR
Constant Current
Source Iref
RI
Internal
Power
VCCI = 4V
Band-Gap
Reference
Vref
1.25V
Clock
Generator
VCC VCC
CLK GND
6-Channel Secondary Monitoring IC
-2-
VersionA.001