FAN6103 FAIRCHILD | Alldatasheet
Document overview
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Technical content
Features
PC Half-Bridge Power Supply Supervisor Plus PWM High Integration, Few External Components Over-Voltage Protection for 3.3V, 5V, and 12V Under-Voltage Protection for 3.3V, 5V, and 12V Under-Voltage protection for –12V and/or –5V Over-Power and Short-Circuit Protection Power-Down Warning Circuitry Power-Good Circuitry Delay Time for PSON and PG Signal Remote ON/OFF Function On-Chip Oscillator and Error Amplifier Latching PWM for Cycle-By-Cycle Switching Push-Pull PWM Operation and Totem-Pole Outputs Soft-Start and Maximum 93% Duty Cycle
Applications
Desktop PC Power Supply
Description
FAN6103 controller is designed for switching mode power supply for desktop PCs. It provides all the functions necessary to monitor and control the output of the power supply. Remote ON/OFF control, power good circuitry, and protection features against over-voltage and over-power are implemented. It directly senses all the output rails for OVP without the need of external dividers. An innovated AC-signal sampling circuitry provides a sufficient power-down warning signal for PG. A built-in timer generates accuracy timing for control circuit, including the PS-off delay. The cycle-by-cycle PWM switching prevents the power transformer from saturation and ensures the fastest response for the short-circuit protection, which greatly reduces the stress for power transistors. Utilizing minimum external components, the FAN6103 includes all of the functions for push-pull and/or half- bridge topology, decreasing the production cost and PCB space, while increasing the mean time between failures for power supply
Ordering Information
Temperature Range Eco Status Package Packing Method FAN6103NZ -40°C to +105°C RoHS 16-Pin Dual Inline Package (DIP) Tube For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
Figure 1. Typical Application
Figure 4. Pin Configuration
1 PSON
Remote on/off logic input. Turn on/off the PWM output after the 16ms / 50ms delay. PSON = 0 means that the main SMPS is operational. PSON = 1 means that the main SMPS is off and the latch is reset. 2 V33 3.3V over-voltage/under-voltage control sense input. 3 V5 5V over-voltage/under-voltage control sense input. transformer. When not in use, this pin should be grounded. 5 UVAC AC-fail detection. Detect main AC voltage under-voltage or failure. 6 NVP The protection input for negative output, such as –12V and/or –5V; trip voltage = 2.1V. 7 V12 12V over-voltage/under-voltage control sense input. the NAND gate inputs are HIGH; the maximum duty cycle on output OP2 is 46%. the NAND gate inputs are HIGH the maximum duty cycle on output OP1 is 46%. operation. The PG delay is 300ms. 12 COMP Error amplifier output and the input of the PWM comparator. is 8µA and the voltage is clamped at 2.5V. 15 RI Reference Resistor. Connected to external resistor for the reference setting. 16 VCC Supply voltage; 4.5V ~ 5.5V, connected to 5V standby.
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN6103 • Rev. 1.0.0 5 FAN6103 — Power Supply Supervisor Plus PWM Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may dam age the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol Parameter Min. Max. Unit VCC DC Supply Voltage 16 V VH Supply Voltage on PSON, V33, V5, V12, OP1, OP2 Pins -0.3 16.0 V VL Supply Voltage on OPP, UVAC, RI, SS , NVP, IN, COMP, PG Pins -0.3 7.0 V IOUT Output Current at PG 30 mA PD Power Dissipation T A < 50°C 1500 mW ΘJA Thermal Resistance (Junction-to-Air) 82.5 °C/W TJ Operating Junction Temperature -40 +125 °C TSTG Storage Temperature Range -55 +150 °C TL Lead Temperature (Soldering) +260 °C ESD Electrostatic Discharge Capability Human Body Model, JESD22-A114 3000 V Charged Device Model, JESD22-C101 1250 Notes: 1. All voltage values, except differential voltage, are given with respect to GND pin. 2. Stresses beyond those listed under Absolute Maximu m Ratings may cause permanent damage to the device. Recommended Operating Conditions The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ens ure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol Parameter Min. Max. Unit TA Operating Ambient Temperature -40 +105 °C
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN6103 • Rev. 1.0.0 6 FAN6103 — Power Supply Supervisor Plus PWM
Electrical Characteristics
VCC = 5V, TA = 25°C, and RI = 75kΩ unless otherwise noted. Symbol Parameter Conditions Min. Typ. Max. Units VCC Section VCC DC Supply Voltage 4.5 5.5 V ICC1 Total Supply Current PSON = LOW, OP1/OP2 = 1000pF 10 mA ICC2 Total Supply Current PSON = HIGH, OP1/OP2 = 1000pF 5 10 mA Protection Section VOVP Over-Voltage Protection 3.3V 3.9 4.1 4.3 V 5.0V 5.8 6.1 6.5 V 12.0V 13.9 14.5 14.9 V VUVP Under-Voltage Protection 3.3V 2.0 2.6 2.8 V 5.0V 3.0 3.6 3.9 V 120V 6.0 7.2 8.0 V VUVS Under-Voltage Sense for PG Low 3.3V 2.5 2.8 3.0 V 5.0V 4.0 4.3 4.5 V 12.0V 9.4 10.1 10.4 V VOPP Over-Power Protection (with TOPP Delay Time) (3) VUVAC = 1.5V 2.25 2.32 2.39 V VOPPH Over-Power Protection (without Delay Time) 3.0 3.2 3.4 V VX Disable Under-Voltage / Over- Power Protection Threshold 0.2 0.3 0.4 V VNVP Negative Voltage Protection Voltage Level 2.0 2.1 2.2 V INVP Negative Voltage Protection Source Current 63 67 71 µA TOVP Timing for Over-Voltage Protection 0.37 0.70 1.35 ms TUVP Timing for Under-Voltage Protection 0.80 2.40 3.75 ms TUVS Timing for Under-Voltage Sense for PG Low 0.37 1.20 1.88 ms TOPP Timing for Over-Power Protection 5 7 9 ms TNVP Timing for Negative Voltage Protection 3.3 7.0 10.2 ms PWM Output Section VOL Output Voltage Low 0.8 V VOH Output Voltage High 4 V RO Output Impedance of V OH 1.5 3.3 k Ω Note: 3. V OPPS = (2/3) • VOPP + (1/3) • VUVAC. Continued on following page…
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN6103 • Rev. 1.0.0 7 FAN6103 — Power Supply Supervisor Plus PWM Electrical Characteristics (Continued) VCC = 5V, TA = 25°C, and RI = 75kΩ unless otherwise noted. Symbol Parameter Conditions Min. Typ. Max. Units Power-Good Section tPG Timing for PG Delay R I = 75kΩ 200 300 400 ms VUVAC UVAC Voltage Sense for PG 0.68 0.70 0.72 V tR PG Good Output Rising Time CL = 100pF, Pull 2.25V to 5.00V 1 3 µs tF PG Good Falling Time CL = 100pF, Pull to 5.00V to 2.25V 300 500 ns VOL2 PG Output Saturation Level I PG = 10mA 0.5 V ION2 PG Leakage Current Collector V PG = 5V 1 µA Remote ON/OFF Section VIH High-Level Input Voltage 2 V VIL Low-Level Input Voltage 0.8 V VHYSTERESIS PSON Input Hysteresis Voltage 0.3 V IPSON Remote Input Driving Current 0.5 mA tPSON(ON) Timing PSON to ON R I = 75kΩ 38 50 62 ms tPSON(OFF) Timing PSON to OFF R I = 75kΩ 8 16 24 ms tPSOFF Timing PG LOW to Power OFF R I = 75kΩ 1.5 2.0 6.3 ms Error Amplifier Section VREF Reference Voltage T A = 25°C 2.46 2.50 2.54 V IIB Input Bias Current 0.1 µA AVOL Open-Loop Voltage Gain 50 60 dB BW Unity Gain Bandwidth 0.3 1.0 MHz PSRR Power Supply Rejection Ratio 50 dB Oscillator Section fOSC PWM Frequency R I = 75kΩ 62 65 68 kHz DCMAX Max Duty Cycle 85 93 % Soft-Start Section ISS Charge Current 7 8 9 µA
Figure 20. Timing Diagram
B) ALL DIMENSIONS ARE IN MILLIMETERS.
5.33 MAX
Figure 21. 16-Pin Dual In-Line Package (DIP) the warranty therein, which covers Fairchild products. http://www.fairchildsemi.com/packaging/.
© 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN6103 • Rev. 1.0.0 13 FAN6103 — Power Supply Supervisor Plus PWM