'SMPS' related articles 2

  1. 2006/11/08 MC34063A - SMPS Controller
  2. 2006/10/26 SG3524 - SMPS control circuit
• Operation from 3.0 to 40V input
• Short circuit current limiting
• Low standby current
• Output switch current of 1.5A without external transistors
• Output voltage adjustable
• Frequency of operation from 100Hz to 100KHz
• Step up, Step down or inverting switching regulators

The MC34063A/MC33063A is a monolithic regulator sub system intended for use as DC to DC converter. This device contains a temperature compensated bandgap reference, a duty cycle control oscillator, driver and high current output switch. It can be used for step down, step up or inverting switching regulators as well as for series pass regulators.

MC34063AP MC34063AD MC33063AP MC33063AD

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This monolithic integrated circuit contains all the control circuitry for a regulating power supply inverter or switching regulator. Included a 16-pin dual-in-line package is the voltage reference, error amplifier, oscillator, pulse-width modulator, pulse steering flip-flop, dual alternating output switches and current-limiting and shut-down circuitry. This device can be used for switching regulators of either polarity, transformer-coupled DC-to-DC converters, transformerless voltage doublers and polarity converters, as well as other power control applications. The SG3524 is designed for commercial applications of 0°C to +70°C.

• Complete PWM power control circuitry
• Single ended or push-pull outputs
• Line and load regulation of 0.2%
• 1% maximum temperature variation
• Total supply current is less than 10mA
• Operation beyond 100kHz

SG3524N SG3524F SG3524D

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