PS223 Version Issue Date File Name Total Pages : A.003 : 2004/09/10 : SP-PS223-A.003.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.003 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 IS12B 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.003 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.003 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.003 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 = Full range. (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.003 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 Threshold Voltage MIN TYP 1.16 MAX 1.25 1.33 ±50 Hysteresis (VHYST) Unit V mV 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 = Full range. 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 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.003 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 Cby 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.003 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 5 S 10 0.0 Symbol Dimension in mm (MAX) Dimension in inch 5.330 A1 0.380 (MIN) 0.015 (MIN) A2 3.300 ± 0.130 0.130 ± 0.005 0.210 (TYP) b 1.520 (TYP) 0.060 0.460 (TYP) 0.018 (TYP) D 19.180 ± 0.200 0.755 ± 0.008 E 7.620 (TYP) 0.300 (TYP) E1 6.350 ± 0.130 0.250 ± 0.005 e 2.540 (TYP) 0.100 (TYP) eB 9.000 ± 0.500 0.355 ± 0.020 L 3.302 ± 0.500 0.130 ± 0.020 S 1.800 (TYP) 0.074 (TYP) 0° ~ 15° 20 25 mm 1.0 inch NOTE (MAX) b1 θ° 15 0.5 A L 0° ~ 15° Version：A.003 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 ) E H h x 45° D C A A1 B θ e L Seating Plane 0 5 0.0 Dimension in mm Symbol MIN. MAX. 0.2 MIN. inch NOTE MAX. A 1.35 1.75 0.0532 0.0688 0.10 0.25 0.0040 0.0098 B 0.33 0.51 0.013 0.020 C 0.19 0.25 0.0075 0.0098 1.27BSC mm 0.4 Dimension in inch A1 e 10 0.050BSC D 9.80 10.00 0.3859 0.3937 H 5.80 6.20 0.2284 0.2440 E 3.80 4.00 0.1497 0.1574 L 0.40 1.27 0.016 0.050 h 0.25 0.50 0.0099 0.0196 θ 0° 8° 0° 8° Version：A.003 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.003 4-Channel Secondary Monitoring IC -10-