参数资料
| 型号： | IR3510MPBF |
| 厂商： | International Rectifier |
| 文件页数： | 20/36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
IR3510 THEORY OF OPERATION
Vbias Regulator
The Vbias regulator supplies a 6.8V/20mA bias voltage for internal circuitry, and through VBIAS pin it also provides
reference voltage for Phase IC. Since the oscillator ramp amplitude tracks the VBIAS voltage, it should be used to
program the Phase IC trip points to minimize phase delay errors.
The VBIAS can also be used as system reference voltage to set VSET, OCPSET and OVPSET voltage.
Charge Pump
The Charge Pump provides gate drive voltage for
input soft-start FET and output ORing FET. A
Tripler circuit is used to boost the VCC voltage to a
high-level voltage in order to drive the input FET.
It has internal voltage clamp of 27V. It provides
20uA input FET charge current and 10uA Oring
FET charge current. It also supplies the internal
input OC comparator and OCP regulator.
An external cap of 0.1uF/50V voltage is required.
30
25
20
Vcx (V)
15
10
5
0
IR3510 Charge Pump Voltage
Fig. 6 shows the charge pump voltage vs. Vcc.
8
10
12
14
16
18
Vin (V)
Fig. 6 Charge Pump Voltage
Input FET Soft-Start Regulator
The input FET soft-start regulator compares the voltage after the input FET and the voltage on the soft-start cap,
which is externally connected on the “SS” pin, and then adjusts the input FET gate drive voltage to control the
P12V, which is the voltage after the input FET, to follow the soft-start cap voltage and linearly increase until it reach
the input voltage.
Since the input FET soft-start regulator can only sink current, it can only slow down the ramp of the input FET gate
drive voltage. If the soft-start cap is too small, or the input FET gate capacitance is large enough, the P12V voltage
may not be able to follow the soft-start cap.
VIN
GATE_I
VCX
SS
20uA
-
+
65mv
Css
0.1uF
70uA
36K
OFF
10K
INPUT SS REGULATOR
P12V
ICS+
Fig. 7 Soft-Start Regulator
Fig. 8 Input FET Soft-Start
Page 20 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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