参数资料
型号: L6730
厂商: STMICROELECTRONICS
元件分类: 稳压器
英文描述: 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
封装: HTSSOP-20
文件页数: 30/52页
文件大小: 1569K
代理商: L6730
Application details
L6730 - L6730B
36/52
Doc ID 11938 Rev 3
0 dB axis with -20 dB/decade slope and a phase margin greater than 45°. To locate poles
and zeroes of the compensation networks, the following suggestions may be used:
Modulator singularity frequencies:
Compensation network singularity frequencies:
Compensation network design:
Put the gain R5/R3 in order to obtain the desired converter bandwidth
–Place
ωZ1 before the output filter resonance ωLC;
–Place
ωZ2 at the output filter resonance ωLC;
–Place
ωP1 at the output capacitor ESR zero ωESR;
–Place
ωP2 at one half of the switching frequency;
Check the loop gain considering the error amplifier open loop gain.
Figure 30.
Asymptotic bode plot of converter's open loop gain
Cout
L
LC
=
1
ω
(13)
Cout
ESR
=
1
ω
(14)
+
=
19
18
19
18
5
1
C
R
P
ω
(15)
20
4
2
1
C
R
P
=
ω
(16)
19
5
1
C
R
Z
=
ω
(17)
()
4
3
20
2
1
R
C
Z
+
=
ω
(18)
LC
C
Vosc
Vin
R
Δ
=
3
5
(18)
相关PDF资料
PDF描述
L6730B 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
L6730TR 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
L6732CTR 20 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
L6732 SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
L6732TR SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
相关代理商/技术参数
参数描述
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