SITI PS223

PS223
Version
Issue Date
File Name
Total Pages
: A.006
: 2009/05/19
: SP-PS223-A.006.doc
: 11
4-Channel Secondary Monitoring IC
With 4-Channel OCP
And an Additional OTP
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.
Tel:886-3-5645656
Fax:886-3-5645626
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
PS223
PS223
4-Channel Secondary Monitoring IC
With 4-Channel OCP
And an Additional OTP
General Description
PS223 is specially designed for switching power supply system. Four important
functions of PS223 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 double
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 input current
sense. An adjustable over-current condition composed of Iref and “protection current
range resistor” helps users design OCP easily.
An additional OTP channel helps users monitor if there have any over temperature
occur.
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
Over-temperature protection
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
73uS de-bounce for noise immunity
Wide power supply range
Special care for AC power off
Version:A.006
4-Channel Secondary Monitoring IC
-1-
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
PS223
Block Diagram
VS12A
171KΩ
FPO/
12 UV
9.4KΩ
73uS
De-bounce
Vref
S Q
R
1MΩ
12 OV
18KΩ
Vref
delay
38mS
De-bounce
H : 4mS
L : 4.5uS
VS12B
Vcc
171KΩ
12 UV
9.4KΩ
Vref
18KΩ
Vref
20KΩ
12 OV
PSON/
OTP
2.5V
VS5
37.7KΩ
5 UV
8.3KΩ
Vref
delay
1
0
5 OV
12KΩ
H : 75mS
L : 4.5uS
Vref
1.13V
PGI
0.63V
R
Q S
VS33
16.3KΩ
1.25V
3.3 UV
8.9KΩ
Vref
12KΩ
Vref
VCCI
3.3 OV
1MΩ
PGO
delay
73uS
De-bounce
12 OC
H : 300mS
L : 4.5uS
IS12A
Iref X 8
12 OC
delay
IS12B
H : 20mS
L : 4.5uS
Iref X 8
Power On
Reset
POR
Constant Current
Source Iref
RI
5 OC
IS5
Internal
Power
Iref X 8
VCCI = 4V
3.3 OC
IS33
Iref X 8
Band-Gap
Reference
Vref
Clock
Generator
CLK
GND
Version:A.006
4-Channel Secondary Monitoring IC
-2-
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
PS223
Timing Chart
Vcc
PSON/
FPO/
PGI
VS12A
VS12B
VS5
VS33
IS12A
IS12B
IS5
IS33
PGO
Td1
Tb1
Td3
Td2
AC
turn on
VPGI
UVP/OVP/OCP
protect
PSON/
turn on
PSON/
turn off
PSON/
turn on
AC
turn off
1.25V
1.13V
0.63V
Td1
Td2
OVP
OVP/UVP/OCP
OVP
Version:A.006
4-Channel Secondary Monitoring IC
-3-
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
PS223
Pin Descriptions
Pin No
1
PIN NAME
PGI
Descriptions
Power good input signal pin
2
GND
Ground
3
FPO/
Inverted fault protection output ,open drain output stage
4
PSON/
Remote ON/OFF control input pin
5
IS12A
12V(1) over current protection input pin
6
RI
Current sense setting
7
IS12B
12V(2) over current protection input pin
8
VS12B
12V(2) over/under voltage protection input pin
9
OTP
Over temperature protection input pin
10
IS5
5.0V over current protection input pin
11
IS33
3.3V over current protection input pin
12
VS12A
12V(1) over/under voltage protection input pin
13
VS33
3.3V over/under voltage protection input pin
14
VS5
5.0V over/under voltage protection input pin
15
VCC
Power supply
16
PGO
Power good output signal pin , open drain output stage
Absolute Maximum Ratings
Parameter
Storage Temperature
Rating
Unit
(Tstg)
-40
to
+125
°C
Operating Temperature (Topr)
-30
to
+90
°C
VCC
-0.5
to
+16.0
V
VS12A/B, IS12A/B
-0.5
to
+16.0
V
VS5, IS5
-0.5
to
+9.0
V
VS33, IS33
-0.5
to
+7.0
V
PGI
-0.5
to
+16.0
V
PSON/, OTP
-0.5
to
Vcc+0.5
V
FPO/
-0.5
to
+16.0
V
PGO
-0.5
to
Vcc+0.5
V
Supply Voltage
Input Voltage Range
Output Voltage Range
(VCC)
(VI)
(VO)
Version:A.006
4-Channel Secondary Monitoring IC
-4-
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
PS223
Electrical Characteristics, Vcc=12V, Ta = 25°C. (unless otherwise specified)
Power Supply Section
Parameter
Conditions
Supply Voltage
MIN
4.2
Supply Current
VPSON/ = 5V
Power On Reset Threshold Voltage (VPOR)
TYP
MAX
Unit
5.0
16.0
V
4.5
5.0
mA
3.6
V
±0.6
Power On Reset Hysteresis (VHYST)
V
Over-Voltage Section
Parameter
Conditions
MIN
TYP
MAX
Unit
VS33
3.7
3.9
4.1
V
VS5
5.7
6.1
6.5
V
VS12A/B
13.1
13.8
14.5
V
Over-Voltage Threshold
Under-Voltage Section
Parameter
Conditions
MIN
TYP
MAX
Unit
VS33
2.0
2.2
2.4
V
VS5
3.3
3.5
3.7
V
VS12A/B
8.5
9.0
9.5
V
Under-Voltage Threshold
Over-Current Section
Parameter
Conditions
MIN
TYP
MAX
Unit
Constant Current Generator Voltage (VRI)
1.20
1.25
1.30
V
Constant Current (IRI)
12.5
20.0
62.5
uA
MIN
TYP
MAX
2.4
2.5
2.6
Over-Temperature Section
Parameter
Conditions
Over-Temperature Threshold(VTH)
-0.26
Hysteresis (VHYST)
Unit
V
V
Version:A.006
4-Channel Secondary Monitoring IC
-5-
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
PS223
Electrical Characteristics (Continued)
PSON/, Analog Input
Parameter
Conditions
MIN
TYP
MAX
Unit
Threshold Voltage ( High )
1.40
1.50
1.60
V
Threshold Voltage ( Low )
0.75
0.85
0.95
V
PGI, Analog Input
Parameter
Conditions
MIN
TYP
MAX
Unit
Threshold Voltage for start Td1
1.16
1.25
1.33
V
Threshold Voltage for start Td2
0.60
0.63
0.75
V
Threshold Voltage for mask OC,UV
1.05
1.13
1.21
V
±50
Hysteresis (VHYST)*
mV
* All of the comparator for PGI input in block diagram.
PGO, Open Drain Digital Output
Parameter
Conditions
Leakage Current (ILKG)
VPGO=5V
Low Level Output Voltage (VOL)
ISINK=10mA
MIN
TYP
MAX
Unit
5
uA
0.3
V
FPO/, Open Drain Digital Output
Parameter
Conditions
Leakage Current (ILKG)
VFPO/=5V
Low Level Output Voltage (VOL)
ISINK=10mA
MIN
TYP
MAX
Unit
5
uA
0.3
V
Switching Characteristics, Vcc=12V, Ta = 25°C.
Parameter
Conditions
MIN
TYP
MAX
Unit
PGI to PGO Delay Time (Td1)
200
300
480
mS
Short Circuit Delay Time (Td2)
49
75
114
mS
PGO to FPO/ Delay Time (Td3)
2
4
6
mS
Over Current Delay Time (Td4)
13
20
27
mS
PSON/ De-bounce Time (Tb1)
24
38
61
mS
FPO/ Noise De-glitch Time (Tb2)
47
73
110
uS
PGO Noise De-glitch Time (Tb3)
47
73
110
uS
Version:A.006
4-Channel Secondary Monitoring IC
-6-
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
PS223
Application
Typical 4 rails SPS
S.P.S. Secondary Side
RS5
+5V Output
RS33
+3.3V Coil
+3.3V Output
RS12(1)
+12V(1) Coil
+12V(1) Output
RS12(2)
+12V(2) Coil
+12V(2) Output
+5VSB
ROC5
ROC33
or
ROC12(1)
ROC12(2)
=
RPGO
4.7K
+5VSB
1 PGI
PGO 16
2 GND
Vcc 15
3 FPO/
VS5 14
PGO
1K
4 PSON/
PSON
5 IS12A
VS33 13
VS12A 12
6 RI
NTC
IS33 11
7 IS12B
8 VS12B
IS5 10
OTP 9
RI
RPGI
CPGI
RT
PS223
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:
V
1.25
(1) I ref = 20 μA , RI = RI =
= 62.5 K (Ω )
I RI 20μ
(2) RS5=0.002 Ω , ΔV5V = 0.002 × I +5V = ROC 5 × 8 × I ref
(3) If +5V OCP trip point is 20A, ROC 5 =
0.002 × 20
= 250(Ω )
8 × 20 μ
5. Over-Temperature Protection design example:
(1) NTC (25℃-10K), (70℃-2.2K)
(2) If 70℃ Over-Temperature occurred, VOTP =2.5V, 2.5 =
5 × RT
,RT=2.2K
2.2 K + RT
Version:A.006
4-Channel Secondary Monitoring IC
-7-
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
PS223
Package Specification
( 16-pin DIP )
E1
E
EB
θ°
D
A2
A
Seating Plane
A1
b1
e
b
0
S
5
10
0.0
Symbol
Dimension in mm
Min
Normal
A
Max
Normal
5.334
25
mm
1.0 inch
Max
0.210
0.381
A2
3.175
3.302
3.429
0.125
0.13
0.135
b
1.300
1.500
1.700
0.051
0.059
0.067
b1
0.400
0.480
0.560
0.015
0.019
D
18.669 19.495 20.320
0.735
0.768
0.800
E
7.366
7.620
7.874
0.290
0.300
0.310
E1
6.223
6.812
7.400
0.245
0.268
0.291
e
2.290
2.540
2.790
0.090
0.100
0.110
EB
8.509
9.017
9.525
0.335
0.355
0.375
0.015
L
2.540
3.175
3.810
0.100
0.125
0.150
0
7
1.120
S
0
20
NOTE
Dimension in inch
A1
θ°
15
0.5
Min
L
7
15
0.044
15
Version:A.006
4-Channel Secondary Monitoring IC
-8-
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
PS223
Package Specification (Continued)
( 16-pin SOP )
c
E
H
0.015 x 45°
D
A
A1
b
θ°
e
L
Seating Plane
0
5
0.0
Symbol
Dimension in mm
Min
Normal
0.2
Min
Normal
inch
NOTE
Max
A
1.346
1.753
0.053
0.069
0.051
0.250
0.002
0.010
b
0.330
0.510
0.013
0.020
c
0.190
0.250
0.007
0.010
D
9.800
10.008
0.386
0.394
E
3.800
4.000
0.150
1.270
mm
0.4
Dimension in inch
Max
A1
e
10
0.157
0.050
H
5.791
6.200
0.228
0.244
L
0.400
1.270
0.018
0.050
θ°
0
8
0
8
Version:A.006
4-Channel Secondary Monitoring IC
-9-
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
PS223
The products listed herein are designed for ordinary electronic applications, such as
electrical appliances, audio-visual equipment, communications devices and so on.
Hence, it is advisable that the devices should not be used in medical instruments,
surgical implants, aerospace machinery, nuclear power control systems,
disaster/crime-prevention equipment and the like. Misusing those products may
directly or indirectly endanger human life, or cause injury and property loss.
Silicon Touch Technology, Inc. will not take any responsibilities regarding the
misusage of the products mentioned above. Anyone who purchases any products
described herein with the above-mentioned intention or with such misused
applications should accept full responsibility and indemnify. Silicon Touch Technology,
Inc. and its distributors and all their officers and employees shall defend jointly and
severally against any and all claims and litigation and all damages, cost and
expenses associated with such intention and manipulation.
Silicon Touch Technology, Inc. reserve the right to make changes to their products or
to discontinue any product or service without notice, and advise customers to obtain
the latest version of relevant information to verify, before placing orders, that
information being relied on is current and complete.
Version:A.006
4-Channel Secondary Monitoring IC
-10-