MC33364 Datasheet PDF (Critical Conduction GreenLine SMPS Controller)

MC33364 - Critical Conduction GreenLine SMPS Controller

Description

1 (1) Zero Current Detect The ZCD Pin ensures critical conduction mode.

ZCD monitors the voltage on the auxiliary winding, during the demagnetization phase of the transformer, comparing it to an internal reference.

The ZCD sets the latch for the output driver.

Features

an on- board reference, UVLO function, a watchdog timer to initiate output switching, a zero current detector to ensure critical conduction operation, a current sensing comparator, leading edge blanking, a CMOS driver and cycle- by- cycle current limiting. The MC33364D1 has an internal 126 kHz frequency clamp. The MC33364D2 is available without an internal frequency clamp. The MC33364D has an internal 126 kHz frequency clamp which is pinned out, so that the designer can adjust the clamp frequenc.

Datasheet Details

Part number	MC33364
Manufacturer	ON Semiconductor
File Size	310.36 KB
Description	Critical Conduction GreenLine SMPS Controller
Datasheet	MC33364 Datasheet
Additional preview pages of the MC33364 datasheet.

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Full PDF Text Transcription

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MC33364 Critical Conduction GreenLine™ SMPS Controller The MC33364 series are variable frequency SMPS controllers that operate in the critical conduction mode. They are optimized for high density power supplies requiring minimum board area, reduced component count, and low power dissipation. Integration of the high voltage startup saves approximately 0.7 W of power compared to the value of the resistor bootstrapped circuits. Each MC33364 features an on- board reference, UVLO function, a watchdog timer to initiate output switching, a zero current detector to ensure critical conduction operation, a current sensing comparator, leading edge blanking, a CMOS driver and cycle- by- cycle current limiting. The MC33364D1 has an internal 126 kHz frequency clamp.

Published: Oct 7, 2005 |