IRIS-F6428S Datasheet, PDF (1/7 Pages) International Rectifier – INTEGRATED SWITCHER

Data Sheet No. PD 96940A
IRIS-F6428S
Features
• Oscillator is provided on the monolithic control with adopting On-Chip-
Trimming technology.
• Small temperature characteristics variation by adopting a comparator to
compensate for temperature on the control part.
INTEGRATED SWITCHER
Package Outline
• Low start-up circuit current (100uA max)
• Built-in Active Low-Pass Filter for stabilizing the operation in case of light
load
• Avalanche energy guaranteed MOSFET with high VDSS
• The built-in power MOSFET simplifies the surge absorption circuit
since the MOSFET guarantees the avalanche energy.
• No VDSS de-rating is required.
• Built-in constant voltage drive circuit
• Built-in step drive circuit
• Built-in low frequency PRC mode (≒20kHz)
• Various kinds of protection functions
• Pulse-by-pulse Overcurrent Protection (OCP)
• Overvoltage Protection with latch mode (OVP)
• Thermal Shutdown with latch mode (TSD)
Descriptions
TO-247 Fullpack (5 Lead)
Key Specifications
Type
MOSFET
VDSS(V)
RDS(ON)
MAX
AC input(V)
Pout(W)
Note 1
100±15%
225
IRIS-F6428S
450
0.35Ω
120±15%
290
Note 1: The Pout (W) represents the thermal rating at Quasi-Resonant
Operation, and the peak power output is obtained by approximately
120 to 140% of the above listed. When the output voltage is low and
ON-duty is narrow, the Pout (W) shall become lower than that of above.
IRIS-F6428S is a hybrid IC consists from power MOSFET and a controller IC, designed for Quasi-Resonant (including
low frequency PRC) fly-back converter type SMPS (Switching Mode Power Supply) applications. This IC realizes
high efficiency, low noise, downsizing and standardizing of a power supply system reducing external components count
and simplifying the circuit designs. (Note). PRC is abbreviation of “Pulse Ratio Control” (On-width control with fixed
OFF-time).
Typical Connection Diagram
IRIS-F6400
GND
Vin
D
S
OCP/FB
www.irf.com