參數(shù)資料
型號(hào): L6731D
廠商: STMICROELECTRONICS
元件分類: 穩(wěn)壓器
英文描述: 20 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
封裝: HTSSOP-16
文件頁(yè)數(shù): 13/23頁(yè)
文件大?。?/td> 386K
代理商: L6731D
Application details
L6731D
20/23
Equation 12
Equation 13
Equation 14
Compensation network design:
Put the gain R5/R3 in order to obtain the desired converter bandwidth
Equation 15
Place
ω
Z1 before the output filter resonance ωLC;
Place
ω
Z2 at the output filter resonance ωLC;
Place
ω
P1 at the output capacitor ESR zero ωESR;
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
20
4
2
1
C
R
P
=
ω
19
5
1
C
R
Z
=
ω
()
4
3
20
2
1
R
C
Z
+
=
ω
LC
C
Vosc
Vin
R
=
3
5
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