LM21212/15 High-Efficiency High-Current Buck Regulators

Texas Instruments introduces a pair of high-current, synchronous buck regulators with the industry’s highest efficiency at 97 percent. The LM21212-1 and LM21215 are well-suited for high-performance FPGAs, ASICs and microprocessors used in a variety of low-voltage applications including wireless, networking and optical communications infrastructure. Members of National’s PowerWise® energy-efficient product family, the LM21212-1 and LM21215 feature integrated high-side and low-side FETs, which simplify design and reduce solution size. The LM21212-1 features an output current up to 12A with synchronizable switching frequency and the LM21215 provides a resistor-programmable current limit, allowing up to 15 A of continuous output current, offering the industry’s best power density. Both products provide peak efficiency greater than 97 percent from a 5 V input to 3.3 V output, and greater than 92 percent efficiency when regulating a 1.2 V output from a 5 V input.