Texas Instruments UC1823A High Speed PWM Controller UC1823AL

The UC1823A High Speed PWM Controller from Texas Instruments is designed for high-performance applications, supporting both voltage-mode and current-mode control methods. It operates effectively at switching frequencies up to 1 MHz and features a low propagation delay of 50 ns to output. The controller includes high-current dual totem pole outputs capable of delivering 2-A peak currents, making it suitable for demanding load conditions. Key specifications include a startup current of only 100 OºA, which is advantageous for off-line applications, and a trimmed oscillator discharge current of 10 mA for precise dead time control. The error amplifier has a gain bandwidth product of 12 MHz with a low input offset voltage of 2 mV, ensuring accurate performance. Additionally, the UC1823A incorporates a pulse-by-pulse current limiting comparator and a latched overcurrent comparator with full cycle restart capability, enhancing system reliability. The device is available in multiple package options and operates over a temperature range of -55¬8C to 125¬8C, making it suitable for a variety of industrial and automotive applications.