L6590 データシートの表示（PDF） - STMicroelectronics
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L6590 Datasheet PDF : 23 Pages
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Figure 26. Test Board (1) Main Waveforms
Ch3: Idrain
Vin = 100 VDC
Pout = 10 W
Ch2: Vdrain
L6590
Ch3: Idrain
Ch2: Vdrain
Vin = 400 VDC
Pout = 10 W
Ch3: Idrain
Vin = 100 VDC
Pout = 1 W
Ch2: Vdrain
Ch3: Idrain
Ch2: Vdrain
Vin = 400 VDC
Pout = 1 W
Figure 27. Test Board (2) with Secondary Feedback: Electrical Schematic
Vin
88 to 264
Vac
CxA
100 nF
L
22 mH
F1
2A/250V
CxB
100 nF
BD1
DF06M
C1
22 µF
400 V
T1 D4 1N5822
D1
BZW06-154
D2
STTA106
R1 10 Ω
C5, C6, C7
470 µF
16V
Rubycon ZL
L1
4.7 µH 5 Vdc / 2 A
C8
220 µF
10V
Rubycon
ZL
1
3
IC1
4
L6590
6, 7, 8 5
C2
22 µF
25V
D3
1N4148
R2
560 Ω
C3
22 nF
OP1 4
PC817
3
R6
6.8 kΩ
C4
2.2 nF
Y1
class
1
2
R5
2 kΩ
C9
1
100 nF
3
2
IC2
TL431
R3
2.43 kΩ
R4
2.43 kΩ
T1 specification
Core E20/10/6, ferrite 3C85 or N67 or equivalent
≈0.6 mm gap for a primary inductance of 1.4 mH
Lleakage <30 µH
Primary : 128 T, 2 series windings 64T each, AWG32 (∅ 0.22 mm)
Sec : 6 T, 4xAWG32
Aux : 14 T, AWG32
11/23
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