U211B2 programming ic chips Phase Control Circuit - General Purpose Feedback

Features

►Internal frequency-to-voltage converter

►Externally-controlled integrated amplifier

►Overload limitation with a “fold back” characteristic

►Optimized soft-start function

►Tacho monitoring for shorted and open loop

►Automatic retriggering switchable

►Triggering pulse typ. 155 mA

►Voltage and current synchronization

►internal supply-voltage monitoring

►Temperature reference source

►Current requirement ≤ 3 mA

Description

The integrated circuit U211B2/ B3 is designed as a phase control circuit in bipolar technology with an internal frequency-voltage converter. Furthermore, it has an internal control amplifier which means it can be used for speedregulated motor applications.

It has an integrated load limitation, tacho monitoring and soft-start functions, etc. to realize sophisticated motor control systems.

Figure 1. Block diagram (Pins in brackets refer to SO16) *) Pins 5 and 18 connected internally

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