器件名称: U2008B-XFPG3Y
功能描述: Low-cost Phase-control IC with Soft Start
文件大小: 341.52KB 共13页
简 介: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
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. Figure 1-1.
230 V ~
Low-cost Phase-control IC with Soft Start U2008B
Block Diagram with Typical Circuit: Load Current Sensing
22 k/2W R2 330 k Load 7 Limiting detector Voltage detector R1 D1 αmax 6 Mains voltage compensation BYT51K R8 1 M
Automatic retriggering Phase control unit = f(V3)
U2008B
5 -VS C1 Supply voltage limiting 22 F/ 25 V 4 GND
TIC 226 R3 180 1 8
Current detector
Full wave load current detector Soft start 2 3
+
-
Reference voltage Voltage monitoring R14 47 k Set point R7 P1
R10 R6 ^ V(R6) = ±250 mV C3
3.3 nF
100 k
C4
100 nF
Load current compensation
4712C–AUTO–07/07
Figure 1-2.
230 V ~ L
Block Diagram with Typical Circuit: Soft Start
22 k/2W R1 D1 αmax BYT51K
R2 680 k Load 7 Limiting detector Voltage detector
R8 470 k 6 Mains voltage compensation
Automatic retriggering
U2008B
Phase control unit = f(V3)
Supply voltage limiting 5 -VS C1 100 F ……
