TPS40021-EP

TPS40021-EP www.ti.com SLUSB58 – SEPTEMBER 2012 ENHANCED, LOW-INPUT VOLTAGE-MODE SYNCHRONOUS BUCK CONTROLLER Check for Samples: TPS40021-EP FEATURES 1 2 Operating Input Voltage 2.25 V to 5.5 V Output Voltage as Low as 0.7 V 1% Internal 0.7-V Reference Predictive Gate Drive™ N-Channel MOSFET Drivers for Higher Efficiency Externally Adjustable Soft-Start and Short Circuit Current Limit Programmable Fixed-Frequency 100-kHz to 1-MHz Voltage-Mode Control Source or Sink Current Quick Response Output Transient Comparators With Power Good Indication Provide Output Status 16-Pin PowerPAD™ Package APPLICATIONS Networking Equipment Telecom Equipment Base Stations Servers DSP Power SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS Controlled Baseline One Assembly and Test Site One Fabrication Site Available in Military (–55°C to 125°C) Temperature Range (1) Extended Product Life Cycle Extended Product-Change Notification Product Traceability (1) Custom temperature ranges available DESCRIPTION The TPS40021 is a dc-to-dc controller designed for non-isolated synchronous buck regulators, providing enhanced operation and design flexability through user programmability. The device utilizes a proprietary Predictive Gate Drive technology to minimize the diode conduction losses associated with the high-side and synchronous rectifier N-channel MOSFET transistions. The integrated charge pump with boost circuit provides a regulated 5-V gate drive fo...