参数资料
| 型号： | IR3510MPBF |
| 厂商： | International Rectifier |
| 文件页数： | 31/36页 |
| 文件大小： | 0K |
| 描述： | IC XPHASE CONTROL 32-MLPQ |
| 标准包装： | 100 |
| 系列： | XPhase™ |
| 应用： | 处理器 |
| 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： | 剪切带 (CT) |
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IR3510
Rdrp =
Ki * Io max* Rfb
Vdrp
where, Iomax is the rated maximum output current
Rfb is the resistor connected to the inverting input of the voltage error amplifier
Vdrp is the required droop voltage at rated maximum output current.
Current Report Gain and Thermal Compensation
The inductor DC resistance is utilized to sense the inductor current. The copper wire of inductor has a constant
temperature coefficient of 3850 ppm/°C, and therefore the maximum inductor DCR can be calculated,
R L _ MAX = R L _ ROOM ? [ 1 + 3850 * 10 ? 6 ? ( T L _ MAX ? T ROOM )]
Where, R L_MAX and R L_ROOM are the inductor DCR at maximum temperature T L_MAX and room temperature
T_ ROOM.
The total input offset voltage (V CS_TOFST ) of current sense amplifier in the phase ICs is the sum of input offset
(V CS_OFST) of the amplifier itself and that created by the amplifier input bias current flowing through the current
sense resistor R CS .
V CS _ TOFST = V CS _ OFST + I CSIN + ? R CS
The current sense signal IIN received from phase IC is determined by,
IIN = Vref + [
Io max
N
? R L _ MAX + V CS _ TOFST ] ? G CS
Where,
Iomax = Maximum load current
N = Number of phases
G CS = Gain of the current sense amplifier
The current report signal Io is determined by,
Io = {[
Io max
n
? R L _ MAX + V CS
_ TOFST
] ? G CS + 0 . 2 } * ( 1 + Rcr 2 / Rcr 1 )
Where, the 0.2V offset voltage is added inside the IR3510 so it can measure the reverse current
Rcr1 is the resistor connected from “IGAIN” pin to GND.
Rcr2 is the external equivalent resistance between “IGAIN” pin and “IO” pin, which includes the thermal
compensation network.
Rcr3 in series with Rcrt which is a NTC provides thermal compensation to cancel the TC effect of the inductor
DCR. Place the NTC close to the output inductor of the center phase.
Oring Reverse Current Cut-Off Threshold setting resistor
The Oring FET reverse current is sensed by the Rds(on) of the Oring FET. The reverse current cut-off threshold
programming resistor Rorset is connected between the Drain pin of the Oring FET and the “OR-“ pin. A constant
current source Iorset flowing out of the “OR--“ pin goes through Rorset and sets the reverse current cut-off
threshold voltage.
Page 31 of 36
IR Confidential
May 18, 2009
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3510MTRPBF | 功能描述:热插拔功率分布 HOT-SWAP N+1 XPHASE CTRL IC RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| IR3513MTRPBF | 功能描述:开关变换器、稳压器与控制器 2 CH OR 2 PHASE SYNC PWM CNTRLR RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| IR3513XMTRPBF | 功能描述:功率驱动器IC RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| IR3513Z | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM POL CONTROL IC |
| IR3513ZMPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM POL CONTROL IC |
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