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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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SIP11203 데이터시트(PDF) 1 Page - Vishay Siliconix |
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SIP11203 데이터시트(HTML) 1 Page - Vishay Siliconix |
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1 / 18 page  Vishay Siliconix SiP11203, SiP11204 Document Number: 73868 S11-0975–Rev. C, 16-May-11 www.vishay.com 1 This document is subject to change without notice. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 Synchronous Rectifier Driver with Power Up/Down Control, Output OVP, Error Amplifier and Precision Reference FEATURES • High Current synchronous rectifier drivers - 2.2 A source and 4 A sink • Driver switching synchronized with primary controller • Full output control during power-up and power- down • 5.5 V to 13 V operating voltage range • 1.225 V on board bandgap voltage reference • Can be powered from the pulse transformer supplying synchronous rectifier timing signals • On-chip ground-sensing error amplifier • Programmable rising edge delay • Output over-voltage protection (OVP) - SiP11203 turns synchronous rectifiers on - SiP11204 turns synchronous rectifiers off • Secondary-side companion chip for the Si9122 Half-Bridge Controller IC APPLICATIONS • High efficiency DC-DC Converter Modules and Bricks • Telecom and Server Power Supplies • High Efficiency Intermediate Bus Converters (IBC) • Half-bridge, full-bridge, or push-pull primary DC-DC topologies • Center-tapped or current-doubler secondary configurations DESCRIPTION The SiP11203/SiP11204 provide the secondary side error amplifier, reference voltage and synchronous rectifier drivers for isolated converter topologies. Both ICs are capable of being powered via conventional bias supplies (output inductor winding or power transformer winding), or from a pulse transformer supplying the gate timing signals, and both parts generate a regulated supply for powering the error amplifier and control circuitry. During power-up the SiP11203/SiP11204 ensure that the synchronous rectifiers are held off until the supply voltages are adequate to guarantee effective operation of the driver circuits. During the soft-start interval, a gradual ramp-up of the synchronous rectifier conduction time is provided. Both ICs also allow control of the discharge rate of the synchronous rectifier driver outputs during power-down. The SiP11203 and SiP11204 are available in a Pb-free MLP44-16 package and are rated to handle the industrial ambient temperature range of - 40 to 85 °C. TYPICAL APPLICATION CIRCUIT OUT B OUT A Vin IN A IN B OVPin EA+ VL Cpd Rdel Rpd GND Vref EA- EAout PGND Half Bridge SiP11203 SiP11204 V IN GND V OUT GND PWM Controller Optoisolator Pulse Transformer ZF1 ZF2 SRH SRL |
유사한 부품 번호 - SIP11203 |
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유사한 설명 - SIP11203 |
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