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| 型号： | IR3510MTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 17/36页 |
| 文件大小： | 0K |
| 描述： | IC XPHASE CONTROL 32-MLPQ |
| 标准包装： | 1 |
| 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： | 标准包装 |
| 产品目录页面： | 1383 (CN2011-ZH PDF) |
| 其它名称： | IR3510MTRPBFDKR |
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IR3510
are tied together and the voltage on the share bus represents the average inductor current through all the
inductors and is used by the Control IC for voltage positioning and current limit protection
Average Phase Current Share Loop
Current sharing between phases of the converter is achieved by the average current share loop in each phase IC.
The output of the current sense amplifier is compared with average current at the share bus. If current in a phase
is smaller than the average current, the share adjust amplifier of the phase will pull down the starting point of the
PWM ramp thereby increasing its duty cycle and output current; if current in a phase is larger than the average
current, the share adjust amplifier of the phase will pull up the starting point of the PWM ramp thereby decreasing
its duty cycle and output current. The current share amplifier is internally compensated so that the crossover
frequency of the current share loop is much slower than that of the voltage loop and the two loops do not interact.
Average current mode control with limited voltage loop gain
Redundant system requires good current sharing between voltage regulators to reduce electrical/thermal stress on
each module and improve system reliability. There are several current sharing schemes for paralleling voltage
regulators. Most of them require a common current share bus which represents the average current or maximum
current in the paralleling system. But, this common current share bus can cause single point of failure if it is
shorted or opened.
To eliminate single-point failure, but still have good current sharing between paralleled voltage regulators for high-
reliability redundant system application, a novel average current mode control with limited voltage loop gain
scheme can be used.
As shown in Fig. 5, there is no common current share bus between modules. By using limited voltage error gain,
the current reference to the non-inverting input of the current error amplifier is identical for each module, because
each module has the same voltage reference and the same remote sense feedback voltage. The average current
control loop will force each module to carry the same amount of load current.
Create Voltage Droop
Added Current Controller
-
IREF1
Vref
OCSET
+
PWM
Rload
OCSET
Added Current Controller
Vref
IREF2
PWM
Fig. 5 Average current mode control with limited voltage loop gain
Page 17 of 36
IR Confidential
May 18, 2009
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| IR3513ZMTRPBF | 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 |
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