DAP005 datasheet(33/39 Pages) STMICROELECTRONICS

33 / 39 page

DAP005

Application examples and ideas

33/39

Application examples and ideas

Note:

Measurements done with the line filter shown in Figure 49.

Note:

Measurements done with the line filter shown in Figure 49.

Figure 47. Test board 80W, Wide-range, Tracking Boost: Electrical schematic

Boost inductor spec:

E25x13x7 core, 3C85 ferrite or equivalent

1.6 mm gap for 0.43 mH primary inductance

Primary: 80 turns 20 x 0.1 mm

Secondary: 9 turns 0.1 mm

1W08G

R11A

1 M

Ω

0.47 µF

400V

33 µF

25V

FUSE

4A/250V

R3A

120 k

Ω

1N4148

20 V

Ω

15 nF

47 k

Ω

DAP005

C12 220 nF

Ω

STP8NM50

56 µF

400 V

Vo=220 to 390 V

Po = 80 W

Vac

(88V to 264V)

37.4 k

Ω

4.7 nF

STTH2L06

NTC

2.5

Ω

39 k

Ω

1 µF

470 nF

R14

22.1 k

Ω

R13

10.5 k

Ω

R3B

120 k

Ω

R11B

1 M

Ω

R10

15.8 k

Ω

R9A

1 M

Ω

R9B

1 M

Ω

R12A

1 M

Ω

R12A

1 M

Ω

R7A

0.68

Ω

1/2 W

R7B

0.68

Ω

1/2 W

R15

Ω

C10

N.A.

R17

390 k

Ω

C11

4.7 nF

R18

47 k

Ω

R20

47 k

Ω

TP1

TP2

Daux

1N4007

100 nF

Table 7. Test board evaluation results at full load

Vin (VAC)

Pin (W)

Vo (VDC)

∆Vo (Vpk-pk)

Po (W)

η (%)

THD (%)

85.3

219.4

16.6

79.64

93.4

0.999

3.7

115

84.9

244.1

15.0

80.80

95.2

0.998

4.3

135

83.7

263.7

13.9

80.16

95.8

0.997

4.8

180

83.5

307.6

14.5

80.28

96.1

0.993

6.0

230

85.2

356.7

13.0

81.33

95.5

0.984

7.7

265

85.0

390.6

12.1

80.85

95.1

0.974

9.5

Table 8. Test board evaluation results at half load

Vin (VAC)

Pin (W)

Vo (VDC)

∆Vo (Vpk-pk)

Po (W)

η (%)

THD (%)

43.4

219.9

8.6

40.90

94.2

0.997

4.8

115

42.6

244.5

7.7

40.10

94.1

0.994

5.7

135

43.1

264.0

7.3

40.39

93.7

0.989

6.5

180

43.8

307.7

7.7

40.31

92.0

0.978

8.4

230

45.6

356.8

6.8

41.03

90.0

0.951

9.6

265

46.0

390.7

6.7

40.63

88.3

0.920

14.2

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