Datasheet > U2008B_07

U2008B_07

更新时间： 2022-12-19 07:16:15

品牌	Logo	应用领域
爱特美尔 - ATMEL		软启动
页数	文件大小	规格书
13页	332K
描述
Low-cost Phase-control IC with Soft Start

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U2008B_07 数据手册

Features

• Full Wave Current Sensing

• Compensated Mains Supply Variations

• Variable Soft Start or Load-current Sensing

• Voltage and Current Synchronization

• Switchable Automatic Retriggering

• Triggering Pulse Typically 125 mA

• Internal Supply-voltage Monitoring

• Current Requirement ≤ 3 mA

Low-cost

Phase-control

IC with Soft

Start

Applications

• Low-cost Motor Control

• Domestic Appliance

1. Description

The U2008B is designed as a phase-control circuit in bipolar technology. It enables

load-current detection as well as mains-compensated phase control. Motor control

with load-current feedback and overload protection are preferred applications.

U2008B

Figure 1-1. Block Diagram with Typical Circuit: Load Current Sensing

22 kΩ/2W

BYT51K

230 V ~

R₁

D₁

α_max

R₈

R₂

330 kΩ

1 MΩ

Load

Limiting

detector

Voltage

detector

Mains voltage

compensation

Automatic

retriggering

U2008B

Phase

control unit

-V_S

Current

detector

TIC

226

ϕ = f(V₃)

C₁

22 µF/

R₃

Supply

voltage

limiting

25 V

GND

180Ω

Reference

voltage

Full wave load

current

detector

Voltage

monitoring

R₁₄

Soft start

47 kΩ

R₁₀

Set point

R₇

100 kΩ

P₁

R₆

V(R6) = ±250 mV

C₄

C₃

Load current

compensation

3.3 nF

100 nF

4712C–AUTO–07/07

12 3 4 5 6 7...13

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