IR公司的IR3527集成了IRXPhase3TMIC的雙相IC驅(qū)動(dòng)器,為實(shí)現(xiàn)多相電源解決方案提供了全特性和靈活的解決方案.IR3527具有7V/1.3A柵極驅(qū)動(dòng)器,轉(zhuǎn)換器輸出電壓高達(dá)5.1V,采用無損耗電感檢測(cè)電流,正饋電壓模式控制,主要用于多相服務(wù)器.本文介紹了IR3527的主要特性,方框圖,PWM控制方框圖以及典型應(yīng)用電路.TheIR3527DualPhaseICcombinedwithanIRXPhase3TMControlICprovidesafullfeaturedandflexiblewaytoimplementmultiphasepowersolutions.Th
IR公司的IR3527集成了IR XPhase3TM
IC的雙相IC驅(qū)動(dòng)器,為實(shí)現(xiàn)多相
電源解決方案提供了全特性和靈活的解決方案. IR3527具有7V/1.3A柵極驅(qū)動(dòng)器,轉(zhuǎn)換器輸出電壓高達(dá)5.1V,采用無損耗
電感檢測(cè)
電流,正饋電壓模式控制,主要用于多相服務(wù)器.本文介紹了IR3527的主要特性,方框圖,PWM控制方框圖以及典型應(yīng)用電路.
The IR3527 Dual Phase IC combined with an IR XPhase3TM Control IC provides a full featured and flexible way to implement multiphase power solutions. The Control IC provides overall system control and interfaces with any number of IR3527 Phase ICs which each drive and monitor 2 phases of a Synchronous Buck converter.
The IR3527 implement an independent power savings function for each power stage and sequential phase timing for use in single output multiphase converters. When power saving mode is enabled, the power stage will disable its output thus eliminating its switching loss while pro
perconverter operation is maintained by the single power stage or in conjunction with other converter power stages. The IR3527 current sense amplifiers remain active when in power savings to support adaptive voltage positioning.
IR3527主要特性:
7V/1.3A gate drivers (2.6A GATEL sink current)
Converter output voltage up to 5.1 V (Limited to VCCL-1.4V)
Loss-less inductor current sensing
Feed-forward voltage mode control
Integrated boot-strap synchronous PFET
Self-calibration of PWM ramp, current sense amplifier, and current share amplifier
Single-wire bidirectional average current sharing
Only three external components per phase, plus common decoupling capacitors
Power State Indicator (
PSI) interface provides the capability to maximize the efficiency at light loads.
