参数资料
| 型号： | IR3082MTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 24/33页 |
| 文件大小： | 0K |
| 描述： | IC CTLR XPHASE 20-MLPQ |
| 标准包装： | 3,000 |
| 系列： | XPhase™ |
| 应用： | 处理器 |
| 电流 - 电源： | 10mA |
| 电源电压： | 9.6 V ~ 16 V |
| 工作温度： | 0°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-MLPQ |
| 供应商设备封装： | 20-MLPQ（5x5） |
| 包装： | 带卷 (TR) |
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IR3082P b F
Type II Compensation
Determine the compensation at no load, the worst case condition. Choose the crossover frequency fc between 1/10
and 1/5 of the switching frequency per phase. Assume the time constant of the resistor and capacitor across the
output inductors matches that of the inductor, R CP and C CP can be determined by equations (27) and (28).
R CP =
C CP =
( 2 π ? f C ) 2 ? L E ? C E ? R FB ? V PWMRMP
1 + ( 2 π ? f C ? C E ? R CE ) 2 ? V o
10 ? L E ? C E
R CP
(27)
(28)
where L E and R CE are the equivalent output inductance and ESR of output capacitors respectively. C CP1 is optional
and may be needed in some applications to reduce the jitter caused by the high frequency noise. A ceramic
capacitor between 10pF and 220pF is usually enough.
Type III Compensation
Determine the compensation at no load, the worst case condition. Choose the crossover frequency fc between 1/10
and 1/5 of the switching frequency per phase. Assume the time constant of the resistor and capacitor across the
output inductors matches that of the inductor, R CP and C CP can be determined by equations (29) and (30), where C E
is equivalent output capacitance.
R CP =
C CP =
( 2 π ? f C ) 2 ? L E ? C E ? V PWMRMP
V o
10 ? L E ? C E
R CP
(29)
(30)
Choose resistor R FB1 according to Equation (31), and determine C FB from Equations (32).
R FB 1 =
1
2
R FB
to
R FB 1 =
2
3
R FB
(31)
C FB =
1
4 π ? f C 1 ? R FB 1
(32)
C CP1 is optional and may be needed in some applications to reduce the jitter caused by the high frequency noise. A
ceramic capacitor between 10pF and 220pF is usually enough.
CURRENT SHARE LOOP COMPENSATION
The crossover frequency of the current share loop should be at least one decade lower than that of the voltage loop
in order to eliminate the interaction between the two loops. A capacitor from SCOMP to LGND is usually enough for
most of the applications. Choose the crossover frequency of current share loop (f CI ) based on the crossover
frequency of voltage loop (f C ), and determine the C SCOMP ,
C SCOMP =
0 .65 ? R PWMRMP ? V I ? I O ? G CS _ ROOM ? R LE ? [1 + 2 π ? f CI ? C E ? ( V O I O )] ? F MI
V O ? 2 π ? f CI ? 1 . 05 ? 10 6
(33)
Where FMI is the PWM gain in the current share loop,
C SCOMP =
Page 24 of 33
R PWMRMP ? C PWMRMP ? f SW ? V PWMRMP
( V O ? V PWMRMP ? V DAC ) ? ( V I ? V DAC )
(34)
01/31/05
相关PDF资料 |
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| IR3086AMPBF | IC PHASE CONTROLLER OVP 20MLPQ |
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| IR3083MPBF | 制造商:International Rectifier 功能描述:IC XPHASE CONTROL SMD 3083 |
| IR3084 | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASETM VR 10/11 CONTROL IC |
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| IR3084AMPBF | 功能描述:IC XPHASE CONTROL 28-MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:XPhase™ 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
| IR3084AMTRPBF | 功能描述:开关变换器、稳压器与控制器 VR10 VR11 Athlon64 XPHASE CTRL IC 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 |
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