參數(shù)資料
型號(hào): L6725TR
廠商: 意法半導(dǎo)體
英文描述: Low cost adjustable step-down controller
中文描述: 低成本可調(diào)降壓控制器
文件頁(yè)數(shù): 19/27頁(yè)
文件大小: 489K
代理商: L6725TR
L6725
Application details
19/27
Compensation network design:
Put the gain R
5
/R
3
in order to obtain the desired converter bandwidth:
Place
ω
Z1
before the output filter resonance
ω
LC
;
Place
ω
Z2
at the output filter resonance
ω
LC
;
Place
ω
P1
at the output capacitor ESR zero
ω
ESR
;
Place
ω
P2
at one half of the switching frequency;
Check the loop gain considering the error amplifier open loop gain.
Figure 12. Asymptotic Bode plot of Converter's open loop gain
LC
C
Vosc
Vin
R
R
=
3
5
(14)
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