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参数资料
| 型号： | IR3500VMTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 15/34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 |
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IR3500V
The voltage at the VDRP pin is a buffered version of the share bus IIN and represents the sum of the DAC voltage
and the average inductor current of all the phases. The VDRP pin is connected to the FB pin through the resistor
R DRP . Since the error amplifier will force the loop to maintain FB to be equal to the VSETPT, an additional current
will flow into the FB pin equal to (VDRP-VSETPT) / R DRP . When the load current increases, the adaptive positioning
voltage increases accordingly. More current flows through the feedback resistor R FB , and makes the output voltage
lower proportional to the load current. The positioning voltage can be programmed by the resistor R DRP so that the
droop impedance produces the desired converter output impedance. The offset and slope of the converter output
impedance are referenced to and therefore independent of the VDAC voltage.
Remote Voltage Sensing
VOSEN+ and VOSEN- are used for remote sensing and connected directly to the load. The remote sense
differential amplifier with high speed, low input offset and low input bias current ensures accurate voltage sensing
and fast transient response.
Inductor DCR Temperature Compensation
A negative temperature coefficient (NTC) thermistor should be used for inductor DCR temperature compensation.
The thermistor should be placed close to the inductor and connected in parallel with the feedback resistor, as
shown in Figure 11. The resistor in series with the thermistor is used to reduce the nonlinearity of the thermistor.
Control IC
VDAC
VDAC
RSETPT
VSETPT
Error
Amplifier
IVSETPT
EAOUT
RFB
Remote
Sense
Amplifier
VDRP
Amplifier
-
+
FB
VDRP
IIN
VO
VOSEN+
VOSEN-
RFB1
RDRP
Rt
Figure 11 - Temperature compensation of inductor DCR
Start-up Sequence
The IR3500V has a programmable soft-start function to limit the surge current during the converter start-up. A
capacitor connected between the SS/DEL and LGND pins controls soft start timing, over-current protection delay
and hiccup mode timing. A charge current of 52.5uA and discharge current of 4uA control the up slope and down
slope of the voltage at the SS/DEL pin respectively.
Page 15 of 34
July 28, 2008
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| IR3503MTRPBF | IC CTRL XPHASE VR11.0/1 32-MLPQ |
| IR3504MTRPBF | IC CTRL XPHASE3 SVID 32-MLPQ |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3502 | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM CONTROL IC |
| IR3502_09 | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM CONTROL IC |
| IR3502A | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM CONTROL IC |
| IR3502AMPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM CONTROL IC |
| 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 |
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