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UC1824 - HIGH SPEED PWM CONTROLLER

Description

The UC1824 family of PWM control devices is optimized for high frequency switched mode power supply applications.

Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier.

Features

  • Complementary Outputs.
  • Practical Operation Switching Frequencies to 1 MHz.
  • 50-ns Propagation Delay to Output.
  • High Current Dual Totem Pole Outputs (1.5 A Peak).
  • Wide Bandwidth Error Amplifier.
  • Fully Latched Logic With Double Pulse Suppression.
  • Pulse-by-Pulse Current Limiting.
  • Soft Start/Maximum Duty Cycle Control.
  • Under-Voltage Lockout with Hysteresis.
  • Low Start Up Current (1.1 mA).
  • Trimmed Bandga.

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Full PDF Text Transcription

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www.ti.com UC1824 UC2824 UC3824 SLUS326A – MARCH 1997 – REVISED JULY 2007 HIGH SPEED PWM CONTROLLER FEATURES • Complementary Outputs • Practical Operation Switching Frequencies to 1 MHz • 50-ns Propagation Delay to Output • High Current Dual Totem Pole Outputs (1.5 A Peak) • Wide Bandwidth Error Amplifier • Fully Latched Logic With Double Pulse Suppression • Pulse-by-Pulse Current Limiting • Soft Start/Maximum Duty Cycle Control • Under-Voltage Lockout with Hysteresis • Low Start Up Current (1.1 mA) • Trimmed Bandgap Reference (5.1 V ± 1%) DESCRIPTION The UC1824 family of PWM control devices is optimized for high frequency switched mode power supply applications.
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