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| 型號(hào)： | SP6136EB |
| 英文描述： | Evaluation Board Manual |
| 中文描述： | 評(píng)估板手冊(cè) |
| 文件頁數(shù)： | 5/9頁 |
| 文件大?。?/td> | 428K |
| 代理商： | SP6136EB |
Rev 5/01/06 SP6136 Evaluation Manual Copyright 2006 Sipex Corporation
Page 5 of 9
LOOP COMPENSATION DESIGN
The open loop gain of the SP6136EB can be divided into the gain of the error amplifier
G
AMP
(
S
)
,
PWM modulator
G
PWM
, buck converter output stage
G
OUT
(
S
)
, and feedback resistor
divider
G
FBK
. In order to crossover at the selected frequency
fc
, the gain of the error amplifier
has to compensate for the attenuation caused by the rest of the loop at this frequency. The
goal of loop compensation is to manipulate the open loop frequency response such that its
gain crosses over 0dB at a slope of –20dB/dec. The open loop crossover frequency should be
higher than the ESR zero of the output capacitors but less than 1/5 of the switching frequency
fs
to insure proper operation. Since the SP6136EB is designed with ceramic type output
capacitors, a Type III compensation circuit is required to give a phase boost of 180
°
in order to
counteract the effects of the output
LC
under damped resonance double pole frequency.
Figure 11. SP6136EB Voltage Mode Control Loop with Loop Dynamic
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP6136ER1 | Evaluation Board Manual |
| SP6137 | Wide Input, 900KHz Synchronous PWM Controller |
| SP6137EU | Wide Input, 900KHz Synchronous PWM Controller |
| SP6137HV | Busway FS Plug-In 400A |
| SP6137HCU | TRANSISTOR NPN 50V SOT523 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP6136ER1 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP6136ER1/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Synchronous Buck Controller |
| SP6136ER1-L | 功能描述:DC/DC 開關(guān)控制器 Synchronous Buck Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| SP6136ER1-L/TR | 功能描述:DC/DC 開關(guān)控制器 Synchronous Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| SP6137 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Wide Input, 900KHz Synchronous PWM Controller |
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