Datasheet > IR3508

IR3508

更新时间： 2024-09-17 11:09:11

品牌	Logo	应用领域
英飞凌 - INFINEON		/
页数	文件大小	规格书
19页	2040K
描述
XPHASE3TM PHASE IC

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IR3508 数据手册

IR3508

DATA SHEET

XPHASE3^TMPHASE IC

DESCRIPTION

The IR3508 Phase IC combined with any IR XPhase3^TMControl IC provides a full featured and flexible way to

implement a power solution 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 multiphase converter. The XPhase3^TMarchitecture results in a power supply that is smaller, less

expensive, and easier to design while providing higher efficiency than conventional approaches.

The IR3508 disables its current sense amplifiers when entering power savings mode. The recommended use

for these Phase ICs is for applications without adaptive voltage positioning where two or more power stages

will be operating in power savings mode.

FEATURES IR3508 PHASE IC

Power State Indicator (PSI) interface provides the capability to maximize the efficiency at light loads.

Anti-bias circuitry

7V/2A gate drivers (4A GATEL sink current)

Support converter output voltage up to 5.1 V (Limited to VCCL-1.4V)

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, IOUT)

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

APPLICATION CIRCUIT

12V

EAIN

RCS

CCS

IOUT

PSI

IOUT

PSI

GATEH

BOOST

VCCL

VOUT+

IR3508

DACIN

LGND

PHSIN

CBST

COUT

VOUT-

PHSIN

PHSOUT

CLKIN

CVCCL

VCCL

Figure 1 Application Circuit

Page 1 of 19

October 27, 2008

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与IR3508相关器件

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IR3508MPBF	INFINEON	获取价格	XPHASE3TM PHASE IC
IR3508MTRPBF	INFINEON	获取价格	XPHASE3TM PHASE IC
IR3508Z	INFINEON	获取价格	XPHASE3TM PHASE IC
IR3508ZMPBF	INFINEON	获取价格	XPHASE3TM PHASE IC
IR3508ZMTRPBF	INFINEON	获取价格	XPHASE3TM PHASE IC
IR350DG06HCB	INFINEON	获取价格	Rectifier Diode, 1 Phase, 1 Element, 600V V(RRM), Silicon, WAFER
IR350DG06HCBPBF	INFINEON	获取价格	Rectifier Diode, 1 Phase, 1 Element, 600V V(RRM), Silicon, WAFER
IR350DG12HCBPBF	INFINEON	获取价格	Rectifier Diode, 1 Phase, 1 Element, 1200V V(RRM), Silicon, WAFER
IR350DM08C	INFINEON	获取价格	Rectifier Diode, 1 Phase, 1 Element, 800V V(RRM), Silicon, WAFER
IR350DM08CPBF	INFINEON	获取价格	Rectifier Diode, 1 Phase, 1 Element, 800V V(RRM), Silicon, WAFER