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2022-09-24 23:33:15
CA1524 - Adjusted Pulse Width Modulator
Features • Complete PWM power supply control circuitry • Independent outputs for single-ended or push-pull operation • Line and load regulation ...... 0.2% (typ)
• Internal reference supply with 1% (max) oscillator and reference voltage variation over temperature • Standby current less than 10mA
• Operating frequency beyond 100kHz • Variable output dead time from 0.5µs to 5µs
• Low VCE (SAT) temperature range
Applications • Positive and negative regulated power supplies • Dual output regulators • Flyback converters • DC-DC transformer coupled converters • Single-ended DC-DC converters • Variable power supplies
The CA1524 and CA3524 silicon monolithic integration provides a circuit wide range of switching regulator circuits for all control circuit designs. CA1524 and CA3524 industry all functions of SG1524, SG2524, SG3524 respectively. A block diagram of the CA1524 series is shown in Figure 1. The circuit includes a Zener voltage reference, transconductance error amplifier, high precision RC oscillator, pulse width modulator, flip-flop, pulse steering dual alternate output switches, current limit and shutdown circuitry. This device can be used in any polarity switching regulators, transformer coupled DC-DC converters, transformer voltage doublers, DC-AC inverter power supplies, high efficiency variable power supplies and polarity converters, and other power control applications .