iris-f6426s International Rectifier Corp., iris-f6426s Datasheet

iris-f6426s

Manufacturer Part Number

iris-f6426s

Description

Integrated Switcher

Manufacturer

International Rectifier Corp.

Datasheet

1.IRIS-F6426S.pdf (7 pages)

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Descriptions

IRIS-F6426S 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).

• 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 (100uA max)

• Built-in Active Low-Pass Filter for stabilizing the operation in case of light

load

• Avalanche energy guaranteed MOSFET with high VDSS

• Built-in constant voltage drive circuit

• Built-in step drive circuit

• Built-in low frequency PRC mode (≒20kHz)

• Various kinds of protection functions

Features

Typical Connection Diagram

• The built-in power MOSFET simplifies the surge absorption circuit

since the MOSFET guarantees the avalanche energy.

• No VDSS de-rating is required.

• Pulse-by-pulse Overcurrent Protection (OCP)

• Overvoltage Protection with latch mode (OVP)

• Thermal Shutdown with latch mode (TSD)

I I I I R R R R I I I I S S S S - - - - F F F F 6 6 6 6 4 4 4 4 0 0 0 0 0 0 0 0

O O O O C C C C P P P P / / / / F F F F B B B B

G G G G N N N N D D D D

V V V V i i i i n n n n

D D D D

S S S S

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.

Key Specifications

IRIS-F6426S

Type

INTEGRATED SWITCHER

MOSFET

VDSS(V)

450

Package Outline

RDS(ON)

0.58Ω

MAX

IRIS-F6426S

TO-247 Fullpack (5 Lead)

Data Sheet No. PD 96939A

AC input(V)

100±15%

120±15%

www.irf.com

Pout(W)

Note 1

145

190

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iris-f6426s Summary of contents

Page 1

... Thermal Shutdown with latch mode (TSD) Descriptions IRIS-F6426S 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 “ ...

Page 2

... IRIS-F6426S Absolute Maximum Ratings (Ta=25ºC) 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 are defined positive into any lead. The thermal resistance and power dissipation ratings are measured under board mounted and still air conditions. ...

Page 3

... IRIS-F6426S Electrical Characteristics (for Control IC) Electrical characteristics for control part (Ta=25 ℃ , Vin=18V,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 Maximum OFF time OFF(MAX) Minimum time for input of quasi Tth(2) resonant signals ...

Page 4

... ASO Coefficient from the left 0.1 curve in your use. 0.01 100 120 1 Drain-to-Source Voltage 1.10 1. ann el tem peratu re Tch [℃ ] IRIS-F6426S Ta=25ºC MOSFET 　 A.S.O. Curve Single Pulse 0.1ms 1ms 10 100 1000 [ IS-F64 26S A valanche en ergy derating cu rve www.irf.com ...

Page 5

... Ambient temperature Ta[℃ 0.1 0.01 0.001 1µ 10µ 0.6 0.5 0.4 0.3 0.2 0.1 120 140 160 IRIS-F6426S Transient thermal resistance curve 100µ [sec] IRIS-F6426S MIC T -P Curve =0.49[ 100 120 Internal frame temperature T F 10m 100m www.irf.com 140 160 ...

Page 6

... IRIS-F6426S Block Diagram 4 Vin START O.V.P. REG. T.S.D Lead Assignments Pin No. IRIS Other Functions O.V.P. – Overvoltage Protection Circuit T.S.D. – Thermal Shutdown Circuit OCP/FB S STEP DRV – 2 step drive circuit D Vin GND LATCH DRIVE Vth( O.S.C Vth( Symbol Description Overcurrent / Feedback 1 OCP/FB Pin 2 S Source Pin ...

Page 7

... IRIS-F6426S Case Outline φ φ φ φ ± ± ± ± ...

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