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| 型号： | IR3092MPBF |
| 厂商： | International Rectifier |
| 文件页数： | 24/37页 |
| 文件大小： | 0K |
| 描述： | IC VID VOLTAGE PROGRAMMER 48MLPQ |
| 标准包装： | 100 |
| 应用： | VID 电压编程器 |
| 电源电压： | 7.3 V ~ 21 V |
| 电流 - 电源： | 29mA |
| 工作温度： | 0°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-MLPQ |
| 供应商设备封装： | 48-MLPQ（7x7） |
| 包装： | 剪切带 (CT) |
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IR3092PbF
The maximum and minimum duty cycle adjust range of Ramp2 compared to Ramp1 has been limited to 0.5x and 2.0x of
the master’s ramp (see Figure 3.). The crossover frequency of the current share loop can be programmed with a capacitor
at the SCOMP pin so that the share loop does not interact with the output voltage loop. A 22nF capacitor from SCOMP to
LGND is good for most of the applications. If necessary have a 1k resistor in series with the Csc to make the current loop
a little bit faster.
The SCOMP capacitor is driven by a trans-conductance stage capable of sourcing and sinking 25uA. The duty cycle of
Ramp2 inversely tracks the voltage on the SCOMP pin; if V(SCOMP) increases, Ramp2’s slope will increase and the
effective duty cycle will decrease resulting in a reduction in Phase 2’s output current. Due to the limited 25uA source
current, an SCOMP pre-charge circuit has been included to pre-condition V(SCOMP) so that the duty cycle of Ramp2 is
equal to Ramp1 prior to any GATEHX high pulses. The pre-condition circuit can source 400uA. The Equal Duty Cycle
Comparator (see Block Diagram) activates a pre-charge circuit when SS/DEL is less than 0.7V. The Error Amplifier
becomes active enabling GATEH switching when SS/DEL is above 1.3V.
Compensation of Voltage Loop
The adaptive voltage positioning is used in the computer applications to meet the load line requirements. Like current
mode control, the adaptive voltage positioning loop introduces extra zero to the voltage loop and splits the double poles of
the power stage, which make the voltage loop compensation much easier.
Resistors R FB and R DRP are chosen according to Equations (9) and (10), and the selection of compensation types
depends on the capacitors used. For the applications using Electrolytic, Polymer or AL-Polymer capacitors, type II
compensation shown in Figure 11 (a) is usually enough. While for the applications with only low ESR ceramic capacitors,
type III compensation shown in Figure 11 (b) is preferred.
CCP1
CCP1
VO+
RFB
RCOMP
CCOMP
RCOMP
CCOMP
RFB1
CFB
FB
-
VO+
RFB
FB
-
EAOUT
EAOU T
VDRP
RDRP
VDAC
+
EAOUT
EAOU T
VDRP
RDRP
VDAC
+
CDRP
(a) Type II compensation
(b) Type III compensation
Figure11 . Voltage loop compensation network
Type II Compensation
Determine the compensation at no load, the worst case condition. Assume the time constant of the resistor and capacitor
across the output inductors matches that of the inductor, the crossover frequency of the voltage loop can be estimated by
Equations (13), where C E and R CE are the equivalent capacitance and ESR of output capacitors respectively and R LE is
the equivalent resistance of inductor DCR.
2 S * C E ( G CS * R FB R LE R CE )
Page 24 of 37
f C
R DRP
(13)
09/07/05
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| IR3092MTR | 功能描述:IC CONTROLLER 2PHASE 48-MLPQ RoHS:否 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
| IR3092MTRPBF | 功能描述:IC CONTROLLER 2PHASE 48-MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
| IR3093M | 制造商:IRF 制造商全称:International Rectifier 功能描述:3 PHASE OPTERON, ATHLON, OR VR10.X CONTROL IC |
| IR3093MPBF | 功能描述:IC VID VOLTAGE PROGRAMMER 48MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
| IR3093MTR | 制造商:IRF 制造商全称:International Rectifier 功能描述:3 PHASE OPTERON, ATHLON, OR VR10.X CONTROL IC |
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