器件名称: U211B-XY
功能描述: Phase Control IC with Overload Limitation for Tacho Applications
文件大小: 605.44KB 共30页
简 介:Features
Internal Frequency-to-voltage Converter Externally Controlled Integrated Amplifier Overload Limitation with “Fold Back” Characteristic Optimized Soft-start Function Tacho Monitoring for Shorted and Open Loop Automatic Retriggering Switchable Triggering Pulse Typically 155 mA Voltage and Current Synchronization Internal Supply-voltage Monitoring Temperature Reference Source Current Requirement ≤3 mA
1. Description
The integrated circuit U211B is designed as a phase-control circuit in bipolar technology with an internal frequency-to-voltage converter. The device includes an internal control amplifier which means it can be used for speed-regulated motor applications. Amongst others, the device features integrated load limitation, tacho monitoring and soft-start functions, to realize sophisticated motor control systems. Figure 1-1. Block Diagram
17(16) 1(1) 5* Automatic retriggering Output pulse 4(4)
Phase Control IC with Overload Limitation for Tacho Applications U211B
Voltage/current detector Control amplifier
11(10) + 10(9) -
6(5) 7(6) Phasecontrol unit = f (V12) 3(3) Supply voltage limitation Reference voltage Voltage monitoring 2(2) -VS GND
14(13) Load limitation speed/time controlled
16(15)
15(14)
Controlled current sink -VRef 12(11) Pin numbers in brackets refer to SO16 * Pins 5 and 18 connected internally
Soft start
Frequencyto-voltage converter 9(8) 8(7)
Pulse-blocking tacho monitoring
18*
13(12)
Rev. 4752B–INDCO–09/05
2. Pin Configu……