U2010B 데이터 시트보기 (PDF) - Atmel Corporation

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U2010B

Phase-control IC with Current Feedback and Overload Protection

Atmel Corporation 

Figure 1-2. Block Diagram with External Circuit

230V ~

18 kΩ/2W

D1

R1

Load

R2

330 kΩ

αmax

R8

470 kΩ

Limiting

detector

15

Voltage

detector

14

13

Overload

Mains voltage

compensation

D3

LED

12

High load

VS

11

Supply 10

voltage GND

C1

22 µF +

Automatic

retriggering

R3

16

180Ω

Current

detector

R4

1

3.3 kΩ

Load

current

detector

2

R6

V(R6) = ± 250 mV

R5

3.3 kΩ

100% 70%

A

αmax

Mode

Phase

Output

B9

A

Programmable Auto-

B

control unit

-

12

+

ϕ = f(V4)

Full wave

rectifier

overload

protection

start

C

Imax

C

S1

Voltage

monitoring

U2010B

Level

shift

Soft

start

Reference

voltage

3

4

5

6

7

8

C3

10 nF

0.1 µF

C5

C4

R11

1 MΩ

+ C2

4.7 µF

Overload

threshold

0.15 µF

R14

P1

R10

50 kΩ

100 kΩ

Load current

compensation

Set point

R7

C7

+ 1 µF

2 U2010B

4766C–INDCO–04/10

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