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IRISMPS3

International Rectifier
Part Number IRISMPS3
Manufacturer International Rectifier
Description International Rectifier Kansas Street El Segundo CA 90245 USA
Published Aug 30, 2005
Detailed Description IRISMPS3 REFERENCE DESIGN Technical Specifications 1. AC Input: V=90~265V, f=57~63Hz, I= 1.3Arms max 2. Inrush Current:...
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IRISMPS3
IRISMPS3


Overview
IRISMPS3 REFERENCE DESIGN Technical Specifications 1.
AC Input: V=90~265V, f=57~63Hz, I= 1.
3Arms max 2.
Inrush Current: 13A max 3.
Efficiency: 87% at full load high line (82% at low line) 4.
Turn On Delay: <2secs @ 90V full load 5.
Short Circuit Protection: Yes 6.
Over Voltage Protection: Yes 7.
Hold-Up Time: 140msec (230Vin Full load) / 27ms (90Vin Full load) 8.
Output Rise Time: 7ms max (10-90%) 9.
Output Characteristics International Rectifier • 233 Kansas Street El Segundo CA 90245 USA Load Range Nominal Ouput Voltage Min 15V 0A Max 4A Regulation (V) 14.
4V ~ 15.
6V 10: Switching Frequency: 20 -250kHz Relevant Technical Documents AN1018a - Using the IR40xx Series SMPS ICs AN1024a - Flyback transformer design for the IR40xx series AN1025a - Designing a Power Supply Using The IRIS40xx Series DT01-1 - A Standby Circuit For the IRIS40xx Integrated Switchers IRIStran.
xls - IRIS Series Flyback Transformer Design Spreadsheet IRIS4013(K) - Datasheet www.
irf.
com 1 IRISMPS3 Circuit Description The IRISMPS3 reference design is a complete tested power supply circuit.
It is designed for a universal AC line input and will provide a 15V, 4A full load DC output.
The design uses a flyback converter topology, with an IRIS4013K as the main switch and control device.
The initial start-up current for the IRIS4013K is provided by a dropper resistor from the DC bus.
Once the circuit is started the Vcc power for the IRIS4013K comes from the bias winding of the main transformer.
The primary current control circuit consists of a current sensing resistor which feeds a voltage proportional to the transformer primary current into the feedback (FB) pin of the IRIS4013K.
The secondary voltage control loop uses an LM431 precision shunt regulator as the reference and an optocoupler to feedback the information across the transformer galvanic isolation boundary back to the control circuit of the IRIS4013K.
Test Circuit Set-up Fig 1) Connections to the board viewed from the top board lay...


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