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参数资料
| 型号： | SP7661EB |
| 厂商： | Exar Corporation |
| 文件页数： | 13/20页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR SP7661 |
| 标准包装： | 1 |
| 系列： | * |
APPLICATIONS INFORMATION
120kHz. The ESR zero is contributed by the
ESR associated with the output capacitors
and can be determined by:
? P(LC) =
.
2π ? √ L ? C OUT
? z(ESR) =
2π ? C OUT ? R ESR
The next step is to calculate the complex
conjugate poles contributed by the LC
output filter,
Gain
(dB)
Condition:
C22 >> CP1, R1 >> RZ3
When the output capacitors are of a Ceramic
Type, the SP7661 Evaluation Board requires
a Type III compensation circuit to give a phase
boost of 180° in order to counteract the effects
of an underdamped resonance of the output
filter at the double pole frequency.
Error Amplifier
Gain Bandwidth Product
20 Log (RZ2/R1)
Frequency
(Hz)
Bode Plot of Type III Error Amplifier Compensation.
CP1
RZ3
CZ3
CZ2
RZ2
- 0.8V
V OUT
R1
68.1k?, 1%
R SET =
R SET
54.48
(V OUT -0.8)
(k?)
V FB
-
+
+
COMP
CF1
Type III Error Amplifier Compensation Circuit
Mar -07 Rev N
SP766 Wide Input Voltage Range 3A, 600kHz Buck Regulator
3
? 2007 Sipex Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP7661ER | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP7661ER/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Wide Input Voltage Range 3A, 600kHz, Buck Regulator |
| SP7661ER-L | 功能描述:开关变换器、稳压器与控制器 Buck Regulator 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 |
| SP7661ERL/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Wide Input Voltage Range 3A, 600kHz, Buck Regulator |
| SP7661ER-L/TR | 功能描述:开关变换器、稳压器与控制器 WIDE INPUT VOLTAGE Range A600KHz 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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