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| Product Specification PC Power Supply Supervisors SG6520 power good (PGO) indicator function, and fault protection (FPO) function for switching power systems. For supervisor function, it provides the over voltage protection (OVP) for 3.3V, 5V and two 12V; over current protection (OCP) for 3.3V, 5V and two 12V; under voltage protection (UVP) for 3.3V, 5V and two 12V. When 3.3V, 5V or 12V voltage is decreasing to 2.3V, 3.5V and 9V respectively, the under voltage protection (UVP) function will be enabled. FPO will be set to high to turn off the PWM controller IC. 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 48mS delay time when PSON signal is set from high to low. To turn off power supply, PSON signal is set from low to high with the delay time 48mS. The PGI circuitry provides a power-down warning signal for PGO. When PGI input is lower than the internal 1.25V reference voltage, PGO signal is pulled low. FEATURES Two 12V sense input pins: VS12 and VS12B Over voltage protection (OVP) for 3.3V, 5V, and two 12V Over current protection (OCP) for 3.3V, 5V, and two 12V Under voltage protection (UVP) for 3.3V, 5V, and two 12V Open drain output for PGO and FPO pins 300mS power good delay 300mS turn on delay for 3.3V, 5V and two 12V 2.8mS PSON control to FPO turn-off delay 48mS PSON control delay No lockup during the fast AC power on/off Wide supply voltage range from 4.2V to 15V Programmable over temperature protection(OTP) DESCRIPTION SG6520 is designed to provide the voltage, and current supervisor function, remote on/off (PSON) function, TYPICAL APPLICATION (c) System General Corp. Version 1.0.1 (IAO33.0041.B0) -1- www.sg.com.tw * www.fairchildsemi.com September 28, 2007 Product Specification PC Power Supply Supervisors SG6520 PIN CONFIGURATION T: D = DIP, S = SOP P: Z = Lead Free Null=regular package MARKING INFORMATION SG6520TP XXXXXXXXYWWV XXXXXXXX: Wafer Lot Y: Year; WW: Week V: Assembly Location ORDERING INFORMATION Part Number SG6520DZ SG6520SZ (Preliminary) Pb-Free Package Type 16 pin DIP Plastic 16 pin SOP Plastic PIN DESCRIPTIONS Pin No. Pin Name 1 2 3 4 PGI GND FPO PSON Type Analog input Supply Logic output Logic input Description Power Good Input. For ATX SMPS, it detects AC line voltage through the main transformer. Ground. Fault Protection Output. Output signal to control the primary PWM IC through an opto-coupler. When FPO is low, the PWM IC is enabled. Remote On/Off logic input from CPU or main-board. The power supply will be turned on/off after 48mS delay. 12V over current protection sense input. For typical application, this pin is connected to the positive end of a current shunt through one resistor. When the voltage on IS12 is higher than that of VS12 by 5mV, OCP will be enabled. Reference setting. One external resistor Ri connected between RI and GND pin will determine a reference current, Iref = 1.25/Ri, for OCP programming. 12V over current protection sense input. For typical application, this pin is connected to the positive end of a current shunt through one resistor. When the voltage on IS12 is higher than that of VS12 by 5mV, OCP will be enabled. Second 12V over/under-voltage control sense input. For over-temperature protection. 5V over current protection sense input. 3.3V over current protection sense input. 12V over/under-voltage control sense input. 3.3V over/under-voltage control sense input. 5V over/under-voltage control sense input. Supply voltage. 4.2V ~ 15V. For ATX SMPS, it is connected to 5V-standby and 12V through diodes respectively. Power good logic output, 0 or 1(open-drain). Power good=1 means that the power supply is good for operation. The power good delay is 300mS. 5 IS12 Analog input 6 RI Analog input 7 8 9 10 11 12 13 14 15 16 IS12B VS12B OTP IS5 IS33 VS12 VS33 VS5 VDD PGO Analog input Analog input Analog input Analog input Analog input Analog input Analog input Analog input Supply Logic output (c) System General Corp. Version 1.0.1 (IAO33.0041.B0) -2- www.sg.com.tw * www.fairchildsemi.com September 28, 2007 Product Specification PC Power Supply Supervisors SG6520 BLOCK DIAGRAM (c) System General Corp. Version 1.0.1 (IAO33.0041.B0) -3- www.sg.com.tw * www.fairchildsemi.com September 28, 2007 Product Specification PC Power Supply Supervisors SG6520 FUNCTION TABLE PGI PGI<1.25V PGI<1.25V PGI<1.25V PGI<1.25V PGI>1.25V PGI>1.25V PGI>1.25V PGI>1.25V X PSON L L L L L L L L H UV Protection 12V & OC Protection OV Protection FPO No No Yes Yes No No Yes Yes X No Yes No Yes No Yes No Yes X L H L H L H H H H PGO L L L L H L L L L x = don't care FPO = L means: fault IS NOT latched FPO = H means: fault IS latched PGO = L means: fault PGO = H means: No fault (c) System General Corp. Version 1.0.1 (IAO33.0041.B0) -4- www.sg.com.tw * www.fairchildsemi.com September 28, 2007 Product Specification PC Power Supply Supervisors SG6520 TIMING DIAGRAM PSON On/Off and 3.3V, 5V OVP Function (c) System General Corp. Version 1.0.1 (IAO33.0041.B0) -5- www.sg.com.tw * www.fairchildsemi.com September 28, 2007 Product Specification PC Power Supply Supervisors SG6520 12V OVP/UVP and OCP Function (c) System General Corp. Version 1.0.1 (IAO33.0041.B0) -6- www.sg.com.tw * www.fairchildsemi.com September 28, 2007 Product Specification PC Power Supply Supervisors SG6520 ABSOLUTE MAXIMUM RATINGS Symbol VDD VI VOUT TJ TSTG TL Parameter DC Supply Voltage Input Voltage Input Voltage Output Voltage Operating Junction Temperature Storage Temperature Range Lead Temperature (Wave soldering or IR, 10 seconds) ESD Capability, HBM Model ESD Capability, Machine Model PSON, VS33, VS5, PGI, IS33, IS5, OTP FPO, PGO Value 16 -0.3 to 7 Unit V V V V KV V VS12, VS12B, IS12,IS12B -0.3 to 15 8 -40 to 125 -55 to 150 260 4.5 200 *All voltage values, except differential voltages, are given with respect to GND pin. * Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. RECOMMENDED OPERATING CONDITIONS Symbol VDD TOPER Parameter DC Supply Voltage Operating Ambient Temperature Range Test Conditions Value 4.2 to 15 -25 to +85 Unit V * For proper operation ELECTRICAL CHARACTERISTICS (VDD=12V, TA=25, UNLESS NOTED) VDD Section Symbol IDD1 IDD2 TR VST Parameter Supply Current Supply Current Supply Voltage Rising Time VDD Start Threshold Voltage Test Conditions PSON = Low PSON = High Min. Typ. 1.7 1.0 Max. 2.6 1.5 4.2 Unit mA mA mS V 1 Over Voltage and Over Current Protection Symbol VOVP Parameter Over Voltage Protection VS33 Over Voltage Protection VS5 Over Voltage Protection VS12, VS12B Ratio of current sense sink current to current sense setting pin (RI) source current OCP comparator input offset voltage Leakage Current (FPO) Low Level Output Voltage (FPO) OVP Delay Time OCP Delay Time RI Pin Voltage Output Current RI Start-up OCP / UVP Protection Time From FPO Low to FPO High Test Conditions Min. 3.7 5.7 13.2 Typ. 3.9 6.1 13.8 8 Max. 4.1 6.5 14.4 8.4 5 5 0.4 Unit V IREF VOFFSET ILKG VOL TOVP TOCP VRI IRI TST-OCP RI = 30 , 0.1% Resistor V(FPO) = 5V Isink 20mA 7.6 -5 mV uA V uS mS V uA mS 33 12.5 1.237 12.5 PGI < 1.25V ,FPO=Low 200 75 20 1.25 110 27.5 1.262 62.5 300 450 (c) System General Corp. Version 1.0.1 (IAO33.0041.B0) -7- www.sg.com.tw * www.fairchildsemi.com September 28, 2007 Product Specification PC Power Supply Supervisors SG6520 Under Voltage Protection and PGI, PGO Symbol VPGI VUVP TOND TUVP ILKG-PGO VOL-PGO TPG TND Parameter Input Threshold Voltage PGI Under Voltage Protection VS33 Under Voltage Protection VS5 Under Voltage Protection VS12, VS12B Under Voltage Turn-on Delay Time UVP Delay Time Leakage Current (PGO) Low Level Output Voltage (PGO) Timing PG Delay Noise Deglitch Time PGI to PGO PGI to PGO Test Conditions Min. 1.225 2.1 3.3 8.5 Typ. 1.25 2.3 3.5 9.0 75 275 Max. 1.275 2.5 3.7 9.5 114 375 5 0.4 Unit V V mS uS uA V mS uS PGI > 1.25V PGI > 1.25V PGO = 5V VDD = 12V Isink 10Ma 49 175 200 90 300 150 450 210 PSON Control Symbol IPSON VIH VIL TPSON TPSOFF Parameter Input Pull-up Current High-level Input Voltage Low-level Input Voltage Timing PSON to On/Off On (PSON Low to FPO Low) Off (PSON High to PGO Low) Timing PGO Low to FPO High Test Conditions PSON = 0V Min. 2 Typ. 120 Max. Unit uA V 0.8 34 34 1.6 48 48 2.8 67 67 4.5 V mS mS Over Temperature Section Symbol VTH VHYST Parameter Over Temperature Threshold Hysteresis Test Conditions Min. 2.4 0.18 Typ. 2.5 Max. 2.6 0.23 Unit V V (c) System General Corp. Version 1.0.1 (IAO33.0041.B0) -8- www.sg.com.tw * www.fairchildsemi.com September 28, 2007 Product Specification PC Power Supply Supervisors SG6520 TYPICAL CHARACTERISTICS S upply C urrent (IDD1) vs Temperature 2.1 2.0 1.9 8.4 8.3 8.2 8.1 Ratio of C urrent S ense S ink C urrent to RI P in S ource C urrent (IR E F ) vs Temperature IDD1 (mA) 1.8 IREF 8.0 7.9 1.7 1.6 1.5 1.4 -40 -25 -10 5 20 35 50 65 80 95 110 125 7.8 7.7 7.6 -40 -25 -10 5 20 35 50 65 80 95 110 125 Temperature ( ) Temperature ( ) OC P C omparator Input Offset Voltage (V O F F S E T ) vs Temperature 3 2 24 22 20 18 16 14 12 OC P Delay Time (T O C P ) vs Temperature V O F F SE T (mV) 0 -1 -2 -3 -40 -25 -10 5 20 35 50 65 80 95 110 125 T O C P (mS ) 1 -40 -25 -10 5 20 35 50 65 80 95 110 125 Temperature ( ) Temperature ( ) RI Pin Voltage (V R I) vs Temperature 1.30 1.30 Input Threshold Voltage (V PG I) vs Temperature 1.28 1.28 V PG I (V) -40 -25 -10 5 20 35 50 65 80 95 110 125 V RI (V) 1.26 1.26 1.24 1.24 1.22 1.22 1.20 1.20 -40 -25 -10 5 20 35 50 65 80 95 110 125 Temperature ( ) Temperature ( ) (c) System General Corp. Version 1.0.1 (IAO33.0041.B0) -9- www.sg.com.tw * www.fairchildsemi.com September 28, 2007 Product Specification PC Power Supply Supervisors SG6520 APPLICATION NOTE Over Current Protection (OCP) The SG6520 provides over current protection for the 3.3V, 5V and two 12V rails. Whenever an OCP condition occurs at any of the voltage rails, PGO will be low and FPO will be open. The internal OCP comparators have a very small offset voltage (5mV). The sink currents of IS33, IS5, IS12 and IS12B are 8 times the current at the RI pin. The current at the RI pin is VRI/Ri. Here is an example demonstrating how to set the over current protection. If I1*R1>(IRI*8)*R2, than OCP active. How to select R2 Resistor: If R1 =5m, Ri=30K, OCP Protection Level is 35A, than R2 = (I1*R1)/(IRI*8) = (35A*5m)/{(1.25V/30K)*8} = 525 (c) System General Corp. Version 1.0.1 (IAO33.0041.B0) - 10 - www.sg.com.tw * www.fairchildsemi.com September 28, 2007 Product Specification PC Power Supply Supervisors SG6520 PACKAGE INFORMATION 16 PINS - DIP(D) D 16 9 E1 1 8 E eB A2 L e b1 A1 A Dimensions: Symbol A A1 A2 b b1 D E E1 e L eB Millimeter Min. Typ. 0.381 3.175 Max. 5.334 Inch Min. 0.015 0.125 Typ. Max. 0.210 18.669 6.121 2.921 8.509 0 3.302 1.524 0.457 19.177 7.620 6.299 2.540 3.302 9.017 7 3.429 19.685 6.477 3.810 9.525 15 0.735 0.241 0.115 0.335 0 0.130 0.060 0.018 0.755 0.300 0.248 0.100 0.130 0.355 7 0.135 0.775 0.255 0.150 0.375 15 (c) System General Corp. Version 1.0.1 (IAO33.0041.B0) - 11 - www.sg.com.tw * www.fairchildsemi.com September 28, 2007 Product Specification PC Power Supply Supervisors SG6520 16 PINS - SOP(S) 16 9 E H Detail A 1 b e 8 F c D A2 A L Detail A y A1 Dimension: Millimeter Min. Typ. 1.346 0.101 1.244 0.406 0.203 9.804 3.810 1.270 5.791 0.406 0.381X45 0 0.101 8 0 6.198 1.270 0.228 0.016 0.015X45 0.004 8 10.008 3.988 0.386 0.150 0.050 0.244 0.050 Symbol A A1 A2 b c D E e H L F y Max. 1.753 0.254 1.499 Inch Min. 0.053 0.004 0.049 Typ. Max. 0.069 0.010 0.059 0.016 0.008 0.394 0.157 (c) System General Corp. Version 1.0.1 (IAO33.0041.B0) - 12 - www.sg.com.tw * www.fairchildsemi.com September 28, 2007 Product Specification PC Power Supply Supervisors SG6520 (c) System General Corp. Version 1.0.1 (IAO33.0041.B0) - 13 - www.sg.com.tw * www.fairchildsemi.com September 28, 2007 |
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