参数资料
型号: IR3500VMTRPBF
厂商: International Rectifier
文件页数: 10/34页
文件大小: 0K
描述: IC XPHASE3 CTLR VR11.1 32-MLPQ
标准包装: 1
系列: XPhase3™
应用: 处理器
电流 - 电源: 6.5mA
电源电压: 4.75 V ~ 7.5 V
工作温度: 0°C ~ 100°C
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘
供应商设备封装: 32-MLPQ(5x5)
包装: 标准包装
其它名称: IR3500VMTRPBFDKR
IR3500V
Figure 5 - Frequency variation with ROSC
This arrangement guarantees the error amplifier is always in control and can demand 0 to 100% duty cycle as
required. It also favors response to a load step decrease which is appropriate given the low output to input voltage
ratio of most systems. The inductor current will increase much more rapidly than decrease in response to load
transients. An additional advantage of the architecture is that differences in ground or input voltage at the phases
have no effect on operation since the PWM ramps are referenced to VDAC. The error amplifier is a high speed
amplifier with 110 dB of open loop gain. It is not unity gain stable. Figure 6 depicts PWM operating waveforms
under various conditions.
PHASE IC
CLOCK
PULSE
EAIN
PWMRMP
VDAC
GATEH
GATEL
STEADY-STATE
OPERATION
DUTY CYCLE INCREASE
DUE TO LOAD
INCREASE
DUTY CYCLE DECREASE
DUE TO VIN INCREASE
(FEED-FORWARD)
DUTY CYCLE DECREASE DUE TO LOAD
DECREASE (BODY BRAKING) OR FAULT
(VCC UV, OCP, VID FAULT)
STEADY-STATE
OPERATION
Figure 6 - PWM Operating Waveforms
Page 10 of 34
July 28, 2008
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IR3502AMTRPBF 功能描述:IC XPHASE CTRL VR11.0/1 32-MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:XPhase3™ 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像,声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP(8x8) 包装:管件