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参数资料
| 型号： | IR3513ZMTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 29/36页 |
| 文件大小： | 0K |
| 描述： | IC CTRL XPHASE3 POL 32-MLPQ |
| 标准包装： | 3,000 |
| 系列： | XPhase3™ |
| 应用： | 处理器 |
| 电流 - 电源： | 3mA |
| 电源电压： | 8 V ~ 16 V |
| 工作温度： | 0°C ~ 125°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： | 带卷 (TR) |
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NOT RECOMMENDED FOR NEW DESIGNS
REPLACEMENT PRODUCT – IR3513ZMTRPBF
IR3513
Bootstrap Capacitor C BST
Depending on the duty cycle and gate drive current of the phase IC, a capacitor in the range of 0.1uF to 1uF is
needed for the bootstrap circuit.
Decoupling Capacitors for Phase IC
0.1uF-1uF decoupling capacitors are required at VCC and VCCL pins of phase ICs.
Over-voltage Resistors R OV1 and R OV2
The over-voltage resistors are used to set the voltage at the OVSNS pin. If the voltage of the OVSNS pin exceeds
VREF by 85mV then the over-voltage protection will be activated and the error amplifier voltage will be pulled
down turning the converter off. The over-voltage fault is latched, which means that the power to the converter has
to be recycled for the fault to clear. Choose VOVSNS a certain value ? V below VREF. VREF is typically 0.8 V.
The over-voltage threshold will then be ? V+85mV. Select R OV1. R OV2 is calculated based on (16).
R OV 2 =
VOVSNS * R OV 1
V OUT ? VOVSNS
(16)
VREF Slew Rate Programming Capacitor C VREF and Resistor R VREF
The slew rate of MARGIN down-slope can be programmed by the external capacitor C VREF as defined in (17),
where I SINK is the sink current of the VREF pin. The slew rate of MARGIN up-slope is the same as that of down-
slope. The resistor R VREF is used to compensate the VREF circuit and can be calculated as shown in (18).
C VREF =
I SINK
SR MARGIN
=
132 * 10 ? 6
SR MARGIN
(17)
C VREF
R VREF = 0 . 5 +
3 . 2 ? 10 ? 15
2
(18)
Type III Compensation
Choose the crossover frequency fc between 1/10 and 1/5 of the switching frequency per phase, the desired
phase margin θ c and Rfb1 (see Figure 17). Determine the component values based on the equations below. wc is
2* π *fc (the crossover angular frequency), Le is the equivalent inductance of the converter, C is the output
capacitance, Rst is the total equivalent resistance in series with the inductor, Rc is the output capacitance ESR
and R is the load resistance.
Ccp =
Rcp =
Cfb =
1
K ? Rfb 1
1
Ccp ? wz 1
1
wz 2 ? Rfb 1
(19)
(20)
(21)
Page 29
Ccp 1 =
1
wp 2 ? Rcp
(22)
May 11, 2008
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| IR3523MTRPBF | IC XPHASE3 CTLR VR11.1 40-MLPQ |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3513ZMTRPBF-CUT TAPE | 制造商:IR 功能描述:IR3513 Series 16 V 3 mA Surface Mount XPhase3 POL Control IC - MLPQ-32 |
| IR3514 | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM AMD HYBRID CONTROL IC |
| IR3514MPBF | 制造商:International Rectifier 功能描述: |
| IR3514MTRPBF | 功能描述:开关变换器、稳压器与控制器 COMPLETE AMD SVID OR PVID PWR SOLUTION 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 |
| IR3515SPBF | 制造商:International Rectifier 功能描述:MOSFET, Power;N-Ch;VDSS 150V;RDS(ON) 0.045Ohm;ID 41A;D2Pak;PD 200W;VGS +/-30V |
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