参数资料
| 型号： | IR3510MPBF |
| 厂商： | International Rectifier |
| 文件页数： | 23/36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
VREF Buffer
The “VSET” pin inputs the VSET voltage from the system, and it is connected to the input of the VREF buffer. The
buffered VSET voltage, VREF, is used as the reference voltage of the voltage error amplifier to control the voltage
regulator output voltage. It’s is also used by the “Body Braking” comparator as a threshold voltage.
The VREF is one of the 5-wire buses connected to the phase IC. It is used as the offset voltage of the current sense
signal IIN, and also the floor voltage of the PWM ramp.
Voltage Error Amplifier
The VRF reference voltage is connected to the non-
inverting input of the voltage error amplifier. The soft-
SOFT START
CLAMP
VOLTAGE ERROR
AMPLIFIER
start clamping circuit is also connected to the non-
inverting input to control the voltage EA output during
1.4V
Cp
IREF
soft-start.
Connected to the inverting input of the voltage error
SS
Rc
Cc
amplifier is the output feedback voltage, which comes
directly from the remote voltage sense amplifier output
or through a resistor divider.
Typical Type II or Type III can be used to compensate
the voltage loop. The Rdroop is used to set the output
VFB
VREF
Rf b
Fig. 11
Rdroop
Voltage Error Amplifier
VFB
voltage droop or the load line, the Rc and Cc is used to
set the compensation zero, and Cp is used to set the
high-frequency pole.
Current Report Amplifier
Three-stage amplifiers are used to report the output load current through “IO” pin. The “IO” signal is also used to set
the voltage droop and balance the current between voltage regulators. Since the current sense signal from the
phase IC has an offset voltage of VREF, the first stage is a differential amplifier which subtracts the VREF voltage
from the IIN signal. In order to measure the reverse current in a paralleled system, a 200mv fixed offset voltage is
added to the current sense signal in a second-stage amplifier. A non-inverting third-stage amplifier with external
gain setting resistors is used to program its output voltage to be proportional to the output load current.
A NTC thermistor is normally required to compensate the TC effect of the inductor DCR current sensing. Fig.12
shows the current report amplifiers and its typical thermal compensation circuit.
IREF
OC CLAMP
CURRENT ERROR
AMPLIFIER
EAOUT
-
C2
OCPSET
IFB
0.3V
+
0.3V
R6
C1
VREF
VIDSEL
R5
IIN
0.2V
+
-
VIDSEL
IGAIN
CURRENT REPORT AMP.
R1
R2
R3
R4
IO
10K NTC
Fig. 12 Current Report with Thermal Compensation and Current Error Amplifier
Page 23 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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