Texas Instruments High-Performance Analog DC DC Switching Controllers LM5027ASQ/NOPB

The LM5027ASQ/NOPB is a voltage-mode PWM controller designed for high-speed operation in DC-DC converter applications. It features a maximum input voltage rating of 105V and operates within an input voltage range of 13V to 90V. The controller includes an internal start-up bias regulator and offers programmable line under-voltage lockout with adjustable hysteresis. Key functionalities include a versatile dual-mode over-current protection system, a programmable volt-second limiter, and soft-start capabilities for both the main power switch and synchronous rectifier outputs. The LM5027ASQ/NOPB supports a maximum duty cycle of 70% and features a precise 500mV over-current comparator with current sense leading edge blanking. The device is packaged in a 24-lead WQFN format and is suitable for applications requiring high efficiency and power density, utilizing an active clamp/reset technique. It also provides a programmable oscillator with a maximum frequency of 1 MHz and synchronization capability. The operating temperature range is from -40¬8C to 125¬8C, making it suitable for a variety of demanding environments.