UNISONIC TECHNOLOGIES CO., LTD PC POWER SUPPLY SUPERVISOR SOP16 DESCRIPTION The UTC 3513 is designed to provide protection circuits, power good output (PGO) indicator, fault protection output () and a PSONB control for PC switching power supply systems. The protection circuits include over voltage protection (OVP), under voltage protection (UVP) and over current protection(ocp) monitoring for 3.3V, 5V and two 12V. DIP16 When 3.3V, 5V or 12V voltage is decreasing to 2.68V, 4.3V and 9.9V respectively, the under voltage protection (UVP) function will be enabled. FPO will be set to high to turn off the PWM controller IC. Toggling the PSONB from low to high will reset the fault protection latch. The voltage difference across external current shunt is used for OCP functions. An external resistor can be used to adjust protection threshold. The power supply is turned on after 38mS time when PSONB signal is set from high to low. To turn off power supply, PSONB signal is set from low to high with the time 38mS. The PGI circuitry provides a powerdown warning signal for PGO. When PGI input is lower than the internal 1.20V reference voltage, PGO signal is pulled low. The device is available in two versions: UTC 3513E/3513F. Specially, fan control function is available in OTP/FC pin of UTC 3513F. FEATURES * OVP/UVP monitors 3.3V, 5V, 12V input voltage level. * OCP monitors I S33, I S5, I S12 input current sense. * Fault protection output () with Open Drain Output stage. * Power good output (PGO) with Open Drain Output stage. * 38ms time for PSONB input signal. * 300ms time from PGI to PGO. * 2.4ms time for PSONB to turn off. ORDERING INFORMATION Ordering Number Lead Free Halogen Free Package Packing 3513ELD16T 3513EGD16T DIP16 Tube 3513ELS16R 3513EGS16R SOP16 Tape Reel 3513ELS16T 3513EGS16T SOP16 Tube 3513FLD16T 3513FGD16T DIP16 Tube 3513FLS16R 3513FGS16R SOP16 Tape Reel 3513FLS16T 3513FGS16T SOP16 Tube 1 of 11 Copyright 2012 Unisonic Technologies Co., Ltd
PIN ASSIGNMENT PIN DESCRIPTIONS PIN NO PIN NAME TYPE DESCRIPTION 1 PGI Input Power Good Input. For ATX SMPS, it detects AC line voltage through the main transformer. 2 GND Supply Ground 3 Output Fault Protection Output. Output signal to control the primary PWM IC through an optocoupler. When is low, the PWM IC is enabled. 4 PSONB Input Remote On/Off logic input from CPU or mainboard. The power supply will be turned on/off after 38mS. 5 OTP/FC Input Over temperature protection/fan speed control 6 RI Input Reference setting. One external resistor Ri connected between RI and GND pin will determine a reference current, I REF = 1.20/Ri, for OCP programming. 7 V S12B Input 12V over/under voltage protection. 8 I S12B * Input 12V over current protection. 8 P WM ** Output Pulse width modulation. 9 I S12A * Input 12V over current protection. 9 I S12AB ** Input 12V over current protection. 10 V S12A Input 12V over/under voltage protection. 11 I S33 Input 3.3V over current protection 12 V S33 Input 3.3V over/under voltage protection 13 I S5 Input 5V over current protection. 14 V S5 Input 5V over/under voltage protection. 15 V DD Supply Power supply. 16 PGO Output Power good logic output, 0 or 1(opendrain). Power good=1 means that the power supply is good for operation. The power good is 300mS. * 3513E only ** 3513F only UNISONIC TECHNOLOGIES CO., LTD 2 of 11
FUNCTION DESCRIPTION(1) ORDERING OTP low level OTP high level FC/PWM T(PSONB ON)/ T(PSONB OFF) tg2 3513E 2.45V 3.25V X 38ms 73μs 3513F 2.45V 3.25V 38ms 73μs FUNCTION DESCRIPTION(2) PGI PSONB UV&OC Protection OV Protection PGO PGI<1.2V L No No L L PGI<1.2V L No Yes H L PGI<1.2V L Yes No L L PGI<1.2V L Yes Yes H L PGI>1.2V L No No L H PGI>1.2V L No Yes H L PGI>1.2V L Yes No H L PGI>1.2V L Yes Yes H L X H X X H L Note: =L means: fault is not latched. =H means: fault is latched PGO=L means: fault. PGO=H means: No fault X=do not care UNISONIC TECHNOLOGIES CO., LTD 3 of 11
BLOCK DIAGRAM RST V DD PGI IS33 VS33 Bandgap Reference V REF=1.2V UN OV 73 μs 73 μs clr 300ms R Q SQ PGO UN IS12A VS12A OV UN 75ms/ 300ms Power On Reset 2.4ms 38 ms PWR Internal Power V CCI=3.6V 2.4V~3.2V PSONB OTP IS12B PWR VS12B OV OSC CLK UN V 12A IS5 VS5 OV V REF=1.2V R I UN Fig. 1 3513E UNISONIC TECHNOLOGIES CO., LTD 4 of 11
BLOCK DIAGRAM(Cont.) RST VDD PGI Bandgap Reference VREF=1.2V UN 73μs/ clr 300ms PGO IS33 VS33 OV 73μs R Q S Q IS12AB UN Power On Reset PWR Internal Power VCCI=3.6V VS12A OV 2.4ms 38ms PSONB OTP/FC UN 75ms/300ms 2.4V~3.2V VS12B OV PWM UN PWR IS5 OSC CLK VS5 OV UN VREF=1.2V RI Fig. 2 3513F UNISONIC TECHNOLOGIES CO., LTD 5 of 11
ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Supply Voltage VDD 0.3 ~ 16 V V S5,V S33 0.3 ~ 7 V Input Voltage V S12A, V S12B 0.3 ~ 16 V V IN I S12A, I S12B, I S5, I S33 0.3 ~ V 12A 0.3 V PSONB, PGI, OTP 0.3 ~ 7 V Output Voltage 0.3 ~ V DD 0.3 V V OUT PGO 0.3 ~ V DD 0.3 V Operating Temperature T OPR 40 ~ 125 Storage Temperature T STG 55 ~ 150 Note 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2. Stress above those listed may cause permanent damage to the devices. RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL MIN TYP MAX UNIT Supply Voltage V DD 4 12 15 V V S5,V S33 7 V Input Voltage V S12A, V S12B 15 V V IN I S12A, I S12B, I S5, I S33 15 V PSONB, PGI,OTP 7 V Output Voltage 7 V V OUT PGO 7 V Output Sink Current 30 ma I O(SINK) PGO 10 ma RI Output Current I O(RI) 10 65 ua Supply Voltage Rising Time (V DD ) t R 1 ms ELECTRICAL CHARACTERISTICS (T A =25, V DD =5V, V 12A =12V) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT OVER VOLTAGE DETECTION V 12A, V 12B 13.2 13.8 14.4 V Over Voltage Threshold V 5 5.7 5.95 6.2 V V 33 3.7 3.9 4.1 V Low Level Output Voltage () V OL @ I SINK =10mA 0.3 @ I SINK =30mA 0.7 V Output Leakage Current () I LEAK @ V () =5V 5 ua PSONB HighLevel Input Voltage V IH 2 V LowLevel Input Voltage V IL 0.8 V Input Pullup Current I IN @ PSONB=0V 100 ua UNISONIC TECHNOLOGIES CO., LTD 6 of 11
ELECTRICAL CHARACTERISTICS (Cont.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT PGI AND PGO V 12A, V 12B 9.5 9.90 10.5 V Under Voltage Threshold V 5 4.15 4.30 4.45 V V 33 2.54 2.68 2.82 V Input Threshold Voltage (PGI) V I(THD) 1.16 1.20 1.24 V Low Level Output Voltage (PGO) V OL @ I SINK =10mA 0.4 V Output Leakage current (PGO) I LEAK @ PGO=5V 5 ua OTP/FC HighLevel Input Voltage (OTP) V IH 3513E/3513F 3.10 3.25 3.40 V LowLevel Input Voltage (OTP) V IL 2.30 2.45 2.60 V Startup Voltage (FC) 0.7 0.8 0.9 V Stop Voltage (FC) 0.55 0.65 0.75 V PWM High Level Output Voltage V OH @ I SOURCE =4.5mA V 12A 0.4 V Low Level Output Voltage V OL @ I SINK =4.5mA 0.4 V Output Leakage Current I LEAK 5 μa PWM Frequency f PWM 28 35 42 KHz SWITCHING CHARACTERISTICS PSONB ON (PSONB Low to Low) T (PSONB ON) @ V DD =5V 32 38 62 ms PSONB OFF (PSONB Hi to PGO Low) T (PSONB OFF) @ V DD =5V 32 38 62 ms PGI to PGO Delay Time T PG @ V DD =5V 200 300 490 ms Timing PGO Low to FPO high T PSOFF @ V DD =5V 2.0 2.4 4 ms UVD/OCD turn on Time T UVP1 @ =Low & PGI > 1.2V 65 75 122 ms T UVP2 @ =Low & PGI < 1.2V 260 300 488 ms Noise Deglitch Time t G1 63 75 120 μs Noise Deglitch Time for Latch t G2 63 75 120 μs TOTAL DEVICE Low Voltage V DD 3.6 V Supply Current I DD @ PSONB=5V 1 ma UNISONIC TECHNOLOGIES CO., LTD 7 of 11
APPLICATION CIRCUIT 5VSB 5V 3513E 3KΩ 100Ω PGI 1 PGI PGO 16 2 GND VDD 15 0.01μF 10KΩ 3 VS5 14 47Ω PSONB 300 4 PSONB IS5 13 I S5 0.01μF OTP 5 OTP VS33 12 3.3V RI 6 RI IS33 11 I S33 12VB 7 VS12B VS12A 10 12VA IS12B 8 9 IS12B IS12A I S12A UNISONIC TECHNOLOGIES CO., LTD 8 of 11
APPLICATION CIRCUIT(Cont.) UNISONIC TECHNOLOGIES CO., LTD 9 of 11
TYPICAL TIMMING DIAGRAM 1) PGI (UNDERVOLTAGE): 2) V 33, V 5, V 12A, V 12B (UNDERVOLTAGE) or I S33, I S5, I S12A, I S12B (OVERCURRENT): UNISONIC TECHNOLOGIES CO., LTD 10 of 11
TYPICAL TIMMING DIAGRAM 3) V 33, V 5, V 12A, V 12B (OVERVOLTAGE). PSONB/OTP t PSOFF t G2 t PSOFF t (PSONB ON) t (PSONB ON) t (PSONB ON) t PGt G1 t PG1t G1 PGO t (PSONB OFF) t (PSONB OFF) V 33/V 5/V 12 4) OTP/FC, PWM, : (at V DD =5V, PSONB=0V, V 12A, V 12B =12V, V 5 =5V, V 33 =3.3V) UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD 11 of 11