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参数资料
| 型号： | IR3082AMPBF |
| 厂商： | International Rectifier |
| 文件页数： | 13/33页 |
| 文件大小： | 0K |
| 描述： | IC XPHASE CONTROL 9.6V 20-MLPQ |
| 标准包装： | 100 |
| 系列： | XPhase™ |
| 应用： | 处理器 |
| 电流 - 电源： | 12mA |
| 电源电压： | 8.05 V ~ 16 V |
| 工作温度： | 0°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-MLPQ |
| 供应商设备封装： | 20-MLPQ（5x5） |
| 包装： | 剪切带 (CT) |
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IR3082A
The voltage at the VDRP pin is a buffered version of the share bus 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 VDRP .
Since the Error Amp will force the loop to maintain FB to be equal to the VDAC reference voltage, current will flow
into the FB pin equal to (VDRP-VDAC) / R VDRP . 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 VDRP 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.
Control IC
Error
Phase IC
Current Sense
Amplifier
VDAC
Amplifier
EA
FB
Vo
ISHARE
VDAC
10k
CS+
CS-
If b
Droop
Rf b
Rv drp
Amplifier
-
+
VDRP
IIN
VDAC
ISHARE
VDAC
Phase IC
10k
Current Sense
Amplifier
CS+
CS-
Figure 8 - Adaptive voltage positioning
Inductor DCR Temperature Correction
If the thermal compensation of the inductor DCR provided by the temperature dependent gain of the current sense
amplifier is not adequate, a negative temperature coefficient (NTC) thermistor can be used for additional correction.
The thermistor should be placed close to the inductor and connected in parallel with the feedback resistor as shown
in Figure 9. The resistor in series with the thermistor is used to reduce the nonlinearity of the thermistor.
Control IC
Error
VDAC
Amplifier
EA
If b
FB
Rf b
Rf b
Rt
Vo
Droop
Amplifier
-
+
IIN
Rv drp
VDRP
Figure 9 - Temperature compensation of inductor DCR
Page 13 of 33
05/02/2006
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3082AMTRPBF | 功能描述:开关变换器、稳压器与控制器 9.6V 5Bit VID 300mV XPHASE CTRL IC 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 |
| IR3082M | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE AMD OPTERON/ATHLON 64 CONTROL IC |
| IR3082MPBF | 功能描述:IC XPHASE CONTROL 20-MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:XPhase™ 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 |
| IR3082MPBF | 制造商:International Rectifier 功能描述:Controller IC Package/Case:20-MLPQ |
| IR3082MTR | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE AMD OPTERON/ATHLON 64 CONTROL IC |
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