PS222S

PS222S Version Issue Date File Name Total Pages : A.003 : 2008/01/10 : SP-PS222S-A.003.doc : 13 3-Channel Secondary Monitoring IC With Over-Current Protection And an Additional 12V OCP Channel 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 PS222S PS222S 3-Channel Secondary Monitoring IC With Over-Current Protection And an Additional 12V OCP Channel General Description PS222S is specially designed for switching power supply system. Four important functions of PS222S are the following: 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 12V to protect our power supply. FPO/ goes to high when one of these supply voltages exceeds their normal operation voltage range. OCP (Over Current Protection) monitors IS33, IS5, IS12 input current sense. Composed of “Iref“ and “protection current range resistor”, an adjustable over-current condition helps users design OCP easily. An additional OCP channel helps users monitor another 12V rail output current. Power good signal generating can notify 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 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 (4.2V~16V) Special care for AC power off 3-Channel Secondary Monitoring IC Version：A.003 Page 1 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. PS222S Block Diagram Vcc / VSx FPO/ VS12 155KΩ VCCI 73uS De-bounce 12 UV SQ R 1MΩ 9KΩ Vref VCCI delay 12 OV H : 4mS L : 4.5uS VCCI 16KΩ Vref VCC 30KΩ 2KΩ VS5 58KΩ VCCI 38mS De-bounce PSON/ 1.25V 4.5V 90KΩ 5 UV 13.5KΩ Vref VCCI 5 OV 18.5KΩ Vref delay H : 75mS L : 4.5uS 1 0 VCCI 1.13V VCCI VS33 38.5KΩ VCCI PGI 0.63V R QS VCCI 3.3 UV 23.5KΩ Vref VCCI 1.25V 3.3 OV 28KΩ Vref 1MΩ VCCI VCCI PGO Vcc OC delay 73uS De-bounce H : 300mS L : 4.5uS ISX Step Down to near 2.5V Iref X 8 VCCI IS12 Step Down to near 2.5V Iref X 8 VCCI 12 OC delay Power On Reset 5 OC H : 20mS L : 4.5uS Internal Power POR Constant Current Source Iref RI IS5 Step Down to near 2.5V Iref X 8 VCCI VCCI = 4V IS33 Step Down to near 2.5V Iref X 8 3.3 OC Band-Gap Reference Vref 1.25V Clock Generator CLK GND 3-Channel Secondary Monitoring IC Version：A.003 Page 2 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. PS222S Timing Chart Vcc PSON/ FPO/ PGI VSx VS12 VS5 VS33 ISx IS12 IS5 IS33 PGO Td1 Td2 AC turn on UVP/OVP/OCP protect Tb1 Td3 PSON/ turn on PSON/ turn off PSON/ turn on AC turn off VPGI 1.25V 1.13V 0.63V Td1 Td2 OVP OVP/UVP/OCP OVP 3-Channel Secondary Monitoring IC Version：A.003 Page 3 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. PS222S Pin Descriptions Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 PIN NAME PGI GND FPO/ PSON/ IS12 RI ISx IS5 IS33 VS12 VS33 VS5 VCC / VSx PGO Ground Inverted fault protection output ,open drain output stage Remote ON/OFF control input pin 12V(1) over current protection input pin Current sense setting 12V(2) over current protection input pin 5.0V over current protection input pin 3.3V over current protection input pin 12V(1) over/under voltage protection input pin 3.3V over/under voltage protection input pin 5.0V over/under voltage protection input pin Power supply Power good output signal pin , open drain output stage Descriptions Power good input signal pin Absolute Maximum Ratings Parameter Storage Temperature Supply Voltage (Tstg) (VCC) VCC/VSx ISX, VS12, IS12 VS5, IS5 Input Voltage Range (VI) VS33, IS33 PGI PSON/ Output Voltage Range Output Current for RI (VO) (IRI) FPO/ PGO RI PSON/, PGO ESD Susceptibility* (VESD) FPOB, VS12 PGI, IS12, VS5 Others * Human Body Model (HBM). Rating -40 -30 -0.5 -0.5 -0.5 -0.5 -0.5 -0.5 -0.5 -0.5 to to to to to to to to to to > > > > +125 +90 +16.0 +16.0 +9.0 +7.0 +16.0 Vcc+0.5 +16.0 Vcc+0.5 62.5 5000 2000 3000 4000 Unit °C °C V V V V V V V V uA V V V V Operating Temperature (Topr) 12.5 to 3-Channel Secondary Monitoring IC Version：A.003 Page 4 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. PS222S Electrical Characteristics, Vcc=12V, Ta = 25° C. (unless otherwise specified) Power Supply Section Parameter Supply Voltage Supply Current Power On Reset Threshold Voltage (VPOR) Power On Reset Hysteresis (VHYST) VPSON/ = 5V 3.2 -0.15 Conditions MIN 4.2 TYP 5.0 2 3.4 -0.3 MAX 16.0 3 3.6 -0.45 Unit V mA V V Over-Voltage Section Parameter VS33 Over-Voltage Threshold VS5 VS12 Conditions MIN 3.7 5.7 13.1 TYP 3.9 6.1 13.8 MAX 4.1 6.5 14.5 Unit V V V Under-Voltage Section Parameter VS33 Under-Voltage Threshold VS5 VS12 Conditions MIN 2.0 3.3 8.5 TYP 2.2 3.5 9.0 MAX 2.4 3.7 9.5 Unit V V V Over-Current Section Parameter VSx, ISx Offset Voltage (OCP Comparator) VS33, IS33 VS5, IS5 VS12, IS12 Constant Current Generator Voltage (VRI) Conditions MIN -5 -5 -5 -5 1.20 TYP -2 -2 -2 -2 1.25 MAX 1 1 1 1 1.30 Unit mV mV mV mV V 3-Channel Secondary Monitoring IC Version：A.003 Page 5 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. PS222S Electrical Characteristics (Continued) PSON/, Analog Input Parameter High-Level Input Voltage (VIH) Low-Level Input Voltage (VIL) Conditions MIN 1.60 0.80 TYP MAX Unit V V PGI, Analog Input Parameter Threshold Voltage for start Td1 Threshold Voltage for start Td2 Threshold Voltage for mask OC,UV Hysteresis (VHYST)* * All of the comparator for PGI input in block diagram. Conditions MIN 1.16 0.60 1.05 -20 TYP 1.25 0.63 1.13 -50 MAX 1.33 0.75 1.21 -80 Unit V V V mV PGO, Open Drain Digital Output Parameter Leakage Current (ILKG) Low Level Output Voltage (VOL) Conditions VPGO=5V ISINK=4mA MIN TYP MAX 5 0.3 Unit uA V FPO/, Open Drain Digital Output Parameter Leakage Current (ILKG) Low Level Output Voltage (VOL) Conditions VFPO/=5V ISINK=6mA MIN TYP MAX 5 0.3 Unit uA V Switching Characteristics, Vcc=12V, Ta = 25° C. Parameter PGI to PGO Delay Time (Td1) Short Circuit Delay Time (Td2) PGO to FPO/ Delay Time (Td3) Over Current Delay Time (Td4) PSON/ De-bounce Time (Tb1) FPO/ Noise De-glitch Time (Tb2) PGO Noise De-glitch Time (Tb3) Conditions MIN 200 49 2 13 24 47 47 TYP 300 75 4 20 38 73 73 MAX 400 100 6 27 52 100 100 Unit mS mS mS mS mS uS uS 3-Channel Secondary Monitoring IC Version：A.003 Page 6 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. PS222S Application Typical 4 rails SPS (Dual 12V OCP) S.P.S. Secondary Side RS5 +3.3V Coil +12V(1) Coil +12V(2) Coil RS33 RS12(1) RS12(2) +5V Output +3.3V Output +12V(1) Output +12V(2) Output DI ROS ROC12(2) ROC12(1) ROC33 ROC5 DV 5.6K = or RPGO 4.7K 1 PGI 2 GND +5VSB 1K PSON PGO 14 VSx 13 VS5 12 VS33 1 1 VS12 10 0.1 uF 0.1 uF PGO +5VSB 3 FPO/ 4 PSON/ 5 IS12 6 RI 7 ISx PS222S IS33 9 IS5 8 Cby CPSON CPGI RPGI RI 0.1 uF 0.1 uF 3-Channel Secondary Monitoring IC Version：A.003 Page 7 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. PS222S Application (Continued) Typical 3 rails SPS (Only one 12V OCP) S.P.S. Secondary Side RS5 +3.3V Coil +12V Coil RS33 RS12 +5V Output +3.3V Output +12V Output ROC12 ROC33 ROC5 = or RPGO 4.7K 1 PGI 2 GND +5VSB 1K PSON PGO 14 VSx 13 VS5 12 VS33 1 1 VS12 10 0.1 uF 0.1 uF PGO +5VSB 3 FPO/ 4 PSON/ 5 IS12 6 RI 7 ISx PS222S IS33 9 IS5 8 Cby CPSON CPGI RPGI RI 0.1 uF 3-Channel Secondary Monitoring IC Version：A.003 Page 8 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. PS222S 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. GND path: (1) The GND path width is wider as far as it could. (2) The better grounding ability has better performance at surge test. 6. PS222S uses only one 12VOCP protection function: As “Typical 3 rails SPS” application circuit, the pin7(ISx) must be connected one resistor(Resistance>10kΩ or floating) to GND. 3-Channel Secondary Monitoring IC Version：A.003 Page 9 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. PS222S Package Specification ( 14-pin DIP ) E1 E EB θ° D A Seating Plane A1 L b1 b e Symbol A A1 b b1 D E E1 e eb L θ° Dimension in mm Min 0.38 1.52 0.46 18.67 6.00 7.32 2.54 0º 7º 19.18 7.62 6.30 2.54 9.53 3.81 15º 6.60 19.69 Normal Max 5.33 Dimension in inch Min 0.015 0.06 0.018 0.735 0.236 0.288 0.100 0º 7º 0.755 0.300 0.248 0.100 0.375 0.150 15º 0.260 0.775 Normal Max 0.210 NOTE 3-Channel Secondary Monitoring IC Version：A.003 Page 10 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. PS222S Package Specification (Continued) ( 14-pin SOP ) E H h x 45° D A C A1 B Seating Plane e L θ Dimension in mm Symbol A A1 B C e D H E L h θ 0° MIN. 1.346 0.102 0.330 0.190 8.534 5.80 3.80 0.38 MAX. 1.753 0.254 0.508 0.250 8.738 6.20 4.00 1.27 8° Dimension in inch MIN. 0.053 0.004 0.013 0.0075 0.336 0.228 0.150 0.015 0° MAX. 0.069 0.01 0.020 0.0098 0.344 0.244 0.157 0.050 8° NOTE 1.27(TPY) 0.050(TYP) 0.38(TPY) 0.015(TYP) 3-Channel Secondary Monitoring IC Version：A.003 Page 11 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement. PS222S 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. 3-Channel Secondary Monitoring IC Version：A.003 Page 12 未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任 Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement.