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PSB2120 - ISDN Remote Power Controller

General Description

The reference provides a 4.0 V voltage for the regulation loop.

A high gain error amplifier compares the reference voltage with the switch mode supply output voltage.

The output of the error amplifier is compared with a periodic linear ramp, which is generated by the sawtooth-oscillator circuit.

Key Features

  • q Switched mode DC/DC-converter q Switched mode DC/DC-converter q CCITT (I.430) ISDN compatible q Integrated 200 V power FET (only PSB 2120-P in P-DIP-22) q Low power dissipation q Supply voltage range 10 V to 60 V q Input undervoltage detection q Programmable overcurrent protection q Soft start q Control circuit to achieve minimum start-up current q Power housekeeping input q Oscillator synchronization input/output q Polarity reversal detection q High voltage CMOS-technology 60 V P-DSO-24-1.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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ISDN Remote Power Controller (IRPC) PSB 2120 CMOS IC Features q Switched mode DC/DC-converter q Switched mode DC/DC-converter q CCITT (I.