l6590a STMicroelectronics, l6590a Datasheet - Page 9

• Manufacturer Part Number: l6590a
• Description: Fully Integrated Power Supply
• Manufacturer: STMicroelectronics

Figure 19. Coss vs. Drain Voltage
Figure 21. Test Board electrical schematic
Coss [pF]
250
200
150
100
88 to 264 Vac
50
0
0
Vin
100
R5 1.8 M
100 nF
R6 39 k
Cx
A
200
22 mH
L
300
Vdrain [V]
Tj = 25 °C
Core E20/10/6, ferrite 3C85 or N67 or equivalent
L
Primary : 128 T, 2 series windings 64T each, AWG32
Sec : 6 T, 4xAWG32
Aux : 14 T, AWG32
100 nF
Cx
0.6 mm gap for a primary inductance of 1.4 mH
leakage
2A/250V
400
5
B
F1
L6590A
1
<30 µH
6, 7, 8
IC1
500
DF06M
3
BD1
22 µF
400 V
600
4
C1
T1 specification
22 µF
25V
C2
700
R1 10
Figure 20. Standby Function Thresholds
Drain Peak Current [mA]
220
200
180
160
140
120
100
BZW06-154
22 nF
STTA106
C3
80
60
1N4148
D2
-50
D1
D3
6.8 k
R6
PC817
Y1 class
OP1
2.2 nF
T1
C4
0
D4 1N5821
4
3
Rubycon ZL
C5, C6, C7
0.22 mm)
470 µF
16V
22 kHz
65 kHz
1
2
1
3
2
560
Tj [°C]
R2
50
100 nF
TL431
C9
IC2
65 kHz
22 kHz
2 k
R5
Rubycon
220 µF
4.7 µH
10V
C8
ZL
L1
100
2.43 k
2.43 k
R4
R3
L6590A
5 Vdc / 2 A
150
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