参数资料
型号: IR3529MTRPBF
厂商: International Rectifier
文件页数: 1/22页
文件大小: 0K
描述: IC CTRL XPHASE CPU/ASIC 20-MLPQ
标准包装: 1
系列: XPhase3™
应用: 处理器
电流 - 电源: 2mA
电源电压: 8 V ~ 16 V
工作温度: 0°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 20-MLPQ
供应商设备封装: 20-MLPQ(4x4)
包装: 标准包装
其它名称: IR3529MTRPBFDKR
IR3529
DATA SHEET
XPHASE3 TM PHASE IC
DESCRIPTION
The IR3529 Phase IC combined with an IR XPhase3
TM
Control IC provides a full featured and flexible way to
multiphase converter. The XPhase3
architecture results in a power supply that is smaller, less expensive, and
implement power solutions for the latest high performance CPUs and ASICs. The “Control” IC provides overall
system control and interfaces with any number of “Phase” ICs which each drive and monitor a single phase of a
TM
easier to design while providing higher efficiency than conventional approaches.
The IR3529 provides two types of current sense outputs; ILL which contains average power supply current,
information which can be used for voltage positioning and ISHARE which contains average active phase current
information since current sense amplifiers of respective phases are disabled when in power savings mode. Higher
efficiency can be expected due to increased driver capability along with reduced non-overlap durations. Turbo is
included to improve load turn-on response. A SHIFT pin now communicates to the control IC a change in phase
IC on-line status resulting in controlled phase timing during PSI and Phase Shedding. The IR3529 also
implements cycle-by-cycle over current protection to resolve high repetition rate load transients.
FEATURES
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Reduced dead time
7V gate drivers (6A GATEL sink current, 4A GATEH sink current)
Turbo Mode load turn-on response enhancement
Programmable cycle-by-cycle over current limit protection
Phase status communicated to control IC for controlled phase timing during PSI and Phase Shedding
Power State Indicator (PSI) interface provides the capability to maximize the efficiency at light loads.
Anti-bias circuitry
Support converter output voltage up to 5.1 V (Limited to VCCL-1.8V)
Loss-less inductor current sensing
Phase delay DFF bypassed during PSI assertion mode to improve output ripple performance
Over-current protection during PSI assertion mode operation
Feed-forward voltage mode control
Integrated boot-strap synchronous PFET
Only four external components per phase
3 wire analog bus connects Control and Phase ICs (VID, Error Amp, Average Power Supply Current)
3 wire digital bus for accurate daisy-chain phase timing control without external components
Debugging function isolates phase IC from the converter
Self-calibration of PWM ramp, current sense amplifier, and current share amplifier
Single-wire bidirectional average current sharing
Small thermally enhanced 20L 4 X 4mm MLPQ package
RoHS compliant
Page 1 of 22
February 12, 2010
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