Voltage Mode PWMsThe SG1526 is a high performance monolithic pulse width Modulator
circuit designed for fixed-frequency Switching Regulators and other
power control applications. Included in an 18-pin dual-in-line package
are a temperature compensated Voltage Reference sawtooth Oscillator
error Amplifier pulse width Modulator pulse metering and steering Logic
and two low impedance Power Drivers Also included are protective
features such as soft-start and undervoltage lockout, digital current
limiting, double pulse inhibit, a data latch for single pulse metering,
adjustable deadtime, and provision for symmetry correction inputs. For
ease of Interface all digital control ports are TTL and B-series CMOS
compatible. Active LOW Logic design allows wired-OR connections for
maximum flexibility. This versatile device CAN be used to implement
single-ended or push-pull Switching Regulators of either polarity, both
transformerless and transformer coupled. The SG1526 is characterized
for operation over the full military ambient junction temperature range of
-55C to +150C. The SG2526 is characterized for operation from -25
to +150C, and the SG3526 is characterized for operation from 0C
+125C By Microsemi Corporation
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