L6590N datasheet(19/23 Pages) STMICROELECTRONICS

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19/23

L6590

APPLICATION IDEAS

Figure 38. 10W AC-DC adapter with no isolation

Figure 39. 15W Auxiliary SMPS for PC

T1 specification

Core E20/10/6, ferrite 3C85 or N67 or equivalent

≈0.5 mm gap for a primary inductance of 1.6 mH

Lleakage <30 µH

Primary : 130 T, 2 series windings 65T each, AWG33

(∅ 0.22 mm)

Sec : 14 T, AWG26 (

∅ 0.4 mm)

Vo =12 V ± 3%

Io= 0 to 0.8 A

22 µF

25 V

100 nF

C7, C8

330 µF

16 V

BZW06-154

1N4148

D4 STPS3L60S

IC1

100 µF

16 V

R1 10

Ω

STTA106

4.7 µH

22 µF

400 V

2.2 nF

BD1

DF06M

Vin

88 to 264 Vac

2A/250V

22 mH

CxA

100 nF

CxB

100 nF

3.9 k

Ω

27 k

Ω

3(4)

5(8)

(7)

6, 7, 8

(9 to 16)

L6590

(L6590D)

T1 specification

Core E20/10/6, ferrite 3C85 or N67 or equivalent

≈ 0.9 mm gap for a primary inductance of 2 mH

Lleakage <50 µH

Primary : 200 T, 2 series windings 100T each, AWG33

(∅ 0.22 mm)

Sec : 9 T, 2 x AWG23 (

∅ 0.64 mm)

Aux : 21 T, AWG33

9, ..., 16

5Vdc / 3 A

22 µF

25 V

100 µF

10V

BZW06-154

1N4148

D4 STPS10L25D

OP1

PC817

L6590D

IC1

C5, C6, C7

470 µF

10 V

R1 10

Ω

47 nF

4.7 µH

STTA106

470 nF

IC2

TL431

Vin = 200 to 375 Vdc

1.8 M

Ω

20 k

Ω

10 nF

2.2 nF

560

Ω

2.43 k

Ω

2.43 k

Ω

240

Ω

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