IRISA6331 International Rectifier, IRISA6331 Datasheet

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IRISA6331

Manufacturer Part Number
IRISA6331
Description
INTEGRATED SWITCHER
Manufacturer
International Rectifier
Datasheet
1.IRISA6331.pdf (7 pages)
• 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.
• Low start-up circuit current (50uA 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
• Various kinds of protection functions
• Pulse-by-pulse Overcurrent Protection (OCP)
• Overvoltage Protection with latch mode (OVP)
• Thermal Shutdown with latch mode (TSD)
Descriptions
IRIS-A6331 is a hybrid IC consists from power MOSFET and a controller IC, designed for PRC
fly-back converter type SMPS (Switching Mode Power Supply) applications, applicable for PRC
operation for small power SMPS. This IC realizes 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).
Features
Typical Connection Diagram
1 1 1 1
2 2 2 2
3 3 3 3
4 4 4 4
IRIS-A6331
8 8 8 8
7 7 7 7
6 6 6 6
5 5 5 5
Key Specifications
IRIS-A6331
Type
MOSFET
VDSS(V)
INTEGRATED SWITCHER
Package Outline
500
RDS(ON)
3.95 Ω
MAX
8 Lead PDIP
IRIS-A6331
100/120 ± 15%
ACinput(V)
www.irf.com
Pout(W)
Note 1
10
1

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IRISA6331 Summary of contents

Page 1

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. • Low start-up circuit current (50uA max) • Built-in ...

Page 2

IRIS-A6331 Absolute Maximum Ratings (Ta=25℃ ℃ ℃ ℃ ) (Refer Gnd 2 and 5) Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters are absolute voltages referenced to terminals stated, all currents ...

Page 3

IRIS-A6331 Electrical Characteristics (for Control IC) Electrical characteristics for control part (Ta=25℃, Vin=20V,unless otherwise specified) Symbol Definition V Operation start voltage in(ON) V Operation stop voltage in(OFF) I Circuit current in operation in(ON) I Circuit current in non-operation in(OFF) T ...

Page 4

IRIS-A6331 IRIS-A6331 A.S.O. temperature derating coefficient curve 100 100 Internal frame temperature TF [ ℃] IRIS-A6331 Maximum Switching current derating curve 　　　　　　　　　　　 Ta=‐ 20～+125℃ 0.8 ...

Page 5

IRIS-A6331 IRIS-A6331 MOSFET Ta-PD1 Curve 1.6 P =1.35[W] D1 1.4 1.2 1 0.8 0.6 0.4 0 100 Ambient temperature Ta[ ℃ 0.1 0.01 1µ 10µ 0.16 0.14 0.12 0.1 0.08 0.06 0.04 ...

Page 6

IRIS-A6331 Block Diagram Vin 3 UVLO ＋ － PWM OSC Lead Assignments Pin Assignment (Top View) Source 1 8 Drain GND 2 7 Drain Vin 3 6 N.C. OCP/ GND Other Functions O.V.P. – Overvoltage Protection Circuit T.S.D. ...

Page 7

IRIS-A6331 Case Outline A6331 WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 a. Type Number b. Lot Number ...

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