器件名称: U209B
功能描述: Phase Control IC for Tacho Applications
文件大小: 449.2KB 共19页
简 介:Features
Internal Frequency-to-voltage Converter Externally Controlled Integrated Amplifier Automatic Soft Start with Minimized “Dead Time” Voltage and Current Synchronization Retriggering Triggering Pulse Typically 155 mA Internal Supply-voltage Monitoring Temperature-compensated Reference Source Current Requirement ≤ 3 mA
1. Description
The integrated circuit U209B is designed as a phase-control circuit in bipolar technology with an internal frequency-to-voltage converter. The device includes an internal open-loop amplifier, which means it can be used for motor speed control with tacho feedback. The U209B is a 14-pin shrink version of the U211B with reduced features. Using the U209B, the designer is able to realize sophisticated as well as economic motor control systems. Figure 1-1. Block Diagram
14(16) Voltage/Current detector 1(1) Automatic retriggering Output pulse 4(4)
Phase Control IC for Tacho Applications U209B
5(5) Control amplifier 6(6) Phase control unit 9(9) = f (V11) Supply voltage limitation Reference voltage Voltage monitoring 3(3) -VS 2(2) GND
10(10) +
13(15)
Soft start -VS 11(11) Pin numbers in brackets refer to SO16 Package 12(12)
Frequencyto-voltage converter
U209B
7(7)
8(8)
4765C–INDCO–02/07
Figure 1-2.
2
D1 18 k 2W R1 M R4 470 k W 1 Voltage/Current detector Automatic retriggering Output pulse 220 5 6 + Reference voltage Voltage monitoring Supply voltage limitation 2 Control amplifier 3 C2 -V S GND 13 C1 C 10 22 F 25 V 2.2 F 16 V……
