UC3824 - Texas Instruments

UC3824 HIGH SPEED PWM CONTROLLER

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. This controller is designed for use in either current mode or voltage mode sys.

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. Particular care was given to minimiz.