- 您现在的位置：买卖IC网 > PDF目录1809 > IR3523MTRPBF (International Rectifier)IC XPHASE3 CTLR VR11.1 40-MLPQ PDF资料下载
参数资料
| 型号： | IR3523MTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 16/37页 |
| 文件大小： | 0K |
| 描述： | IC XPHASE3 CTLR VR11.1 40-MLPQ |
| 标准包装： | 3,000 |
| 系列： | XPhase3™ |
| 应用： | 处理器 |
| 电流 - 电源： | 10mA |
| 电源电压： | 4.75 V ~ 7.5 V |
| 工作温度： | 0°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-MLPQ |
| 供应商设备封装： | 40-MLPQ（6x6） |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页当前第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页
IR3523
Output 1 (Vtt) Adaptive Voltage Positioning
Adaptive Voltage Positioning is needed to reduce the output voltage deviations during load transients and the power
dissipation of the load at heavy load. IR3523 only provides AVP on output1. The circuitry related to the voltage
positioning is shown in Figure 9. Resistor R FB1 is connected between the error amplifier’s inverting input pin FB1
and the remote sense differential amplifier output. An internal current source whose value is programmed by the
same external resistor that programs the oscillator frequency sinks current from the FB1 pin. The error amplifier
forces the converter’s output voltage higher to maintain a balance at its inputs. R FB1 is selected to program the
desired amount of fixed offset voltage above the DAC voltage.
The VDRP1 pin voltage is a buffered reproduction of the IIN1 pin which is connected to the current share bus
ISHARE. The voltage on ISHARE represents the system average inductor current information. At each phase IC, an
RC network across the inductor provides current information which is gained up 32.5X and then added to the
VDAC X voltage. This phase current information is provided on the ISHARE bus via a 3K resistor in the phase ICs.
The VDRP1 pin is connected to the FB1 pin through the resistor R DRP1 . Since the error amplifier will force the loop
to maintain FB1 to be equal to the VDAC1 reference voltage, an additional current will flow into the FB1 pin equal to
(VDRP1-VDAC1) / R DRP1 . When the load current increases, the adaptive positioning voltage increases accordingly.
More current flows through the feedback resistor R FB1 , and makes the output voltage lower proportional to the load
current. The positioning voltage can be programmed by the resistor R DRP1 so that the droop impedance produces
the desired converter output impedance. The offset and slope of the converter output impedance are referenced to
VDAC1 and therefore independent of the VDAC1 voltage.
Control IC
VDAC1
Phase IC
VDAC1
Current Sense
Error
ISHARE
Amplifier
CSIN+
CSIN-
IFB
Amplifier
VDRP
Amplifier
EAOUT1
FB1
VDRP1
RFB1
RDRP1
VDAC
3k
Phase IC
Current Sense
-
+
IIN1
VOUT1
ISHARE
VDAC
3k
Amplifier
CSIN+
CSIN-
Remote
Sense
Amplifier
Page 16 of 37
VOSEN1+
VOSEN1-
Figure 9 - Adaptive voltage positioning
June 20, 2008
相关PDF资料 |
PDF描述 |
|---|---|
| IR3527MTRPBF | IC CTRL XPHASE3 DUAL 24-MLPQ |
| IR3529MTRPBF | IC CTRL XPHASE CPU/ASIC 20-MLPQ |
| IR3550MTRPBF | IC DRIVER GATE 60A PQFN |
| IR3553MTRPBF | IC DRIVER GATE 40A PQFN |
| IR3621FTR | IC REG CTRLR BUCK PWM VM 28TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3527 | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM DUAL PHASE IC |
| IR3527MPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM DUAL PHASE IC |
| IR3527MTRPBF | 功能描述:开关变换器、稳压器与控制器 XPHASE3 Dual Phase 7V 1.3A PMIC 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 |
| IR3529 | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM PHASE IC |
| IR3529MPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM PHASE IC |
发布紧急采购，3分钟左右您将得到回复。