MB3782 Datasheet, PDF (21/28 Pages) Fujitsu Component Limited. – Switching Regulator Controller

MB3782
40
20
0
– 20
– 40
10
40
20
0
– 20
– 40
10
Frequenncy vs.gain and phase
CNF = open ₁₈₀
40
AV
90
20
0
0
φ
– 90
– 20
– 180
100
1k
10 k 100 k 1 M
Frequenncy f (Hz)
Frequenncy vs.gain and phase
CNF = 470 pF ₁₈₀
– 40
10
40
90
20
AV
0
0
φ
– 90
– 20
100
1k
10 k 100 k
Frequenncy f (Hz)
– 180
1M
– 40
10
Test Circuit
VREF
VREF
CNF
Frequenncy vs.gain and phase
CNF = 0.047 pF ₁₈₀
AV
90
0
φ
– 90
– 180
100
1k
10 k 100 k 1 M
Frequenncy f (Hz)
Frequenncy vs.gain and phase
CNF = 4700 pF ₁₈₀
AV
90
0
φ
– 90
– 180
100
1k
10 k 100 k 1 M
Frequenncy f (Hz)
4.7 kΩ 4.7 kΩ
10 µF
–+
IN
4.7 kΩ 4.7 kΩ
240 kΩ
4–
6
5+
Error amp
OUT
(Continued)
21