FAN6103 Datasheet, PDF (1/13 Pages) Fairchild Semiconductor – Power Supply Supervisor Plus PWM

October 2009
FAN6103
Power Supply Supervisor Plus PWM
Features
ƒ PC Half-Bridge Power Supply Supervisor Plus
PWM
ƒ High Integration, Few External Components
ƒ Over-Voltage Protection for 3.3V, 5V, and 12V
ƒ Under-Voltage Protection for 3.3V, 5V, and 12V
ƒ Under-Voltage protection for –12V and/or –5V
ƒ Over-Power and Short-Circuit Protection
ƒ Power-Down Warning Circuitry
ƒ Power-Good Circuitry
ƒ Delay Time for PSON and PG Signal
ƒ Remote ON/OFF Function
ƒ On-Chip Oscillator and Error Amplifier
ƒ Latching PWM for Cycle-By-Cycle Switching
ƒ Push-Pull PWM Operation and Totem-Pole Outputs
ƒ Soft-Start and Maximum 93% Duty Cycle
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
Applications
ƒ Desktop PC Power Supply
Ordering Information
Part Number
FAN6103NZ
Operating
Temperature Range
-40°C to +105°C
Eco Status
Package
RoHS
16-Pin Dual Inline Package (DIP)
Packing
Method
Tube
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2009 Fairchild Semiconductor Corporation
FAN6103 • Rev. 1.0.0
www.fairchildsemi.com