Texas Instruments has introduced two 20V step-down voltage regulators with PMBus digital interface and adaptive voltage scaling capability for non-isolated point-of-load designs.
The 2MHz TPS40400 single-channel controller has a 3V to 20V input range and the 1.2MHz TPS40422 dual-channel or multi-phase controller has a 4.5V to 20V input voltage range.
According to the supplier, the efficiency is greater than 90% and adaptive voltage scaling saves power.
The TPS40400 and TPS40422 can be combined with the National 17-V LM25066 system power and hot-swap protection IC as a complete PMBus-compliant solution for 12V systems with input protection and power conversion.
The LM25066 provides real-time power measurement including voltage, current, temperature and fault data for each blade subsystem in a telecom or server application – enabling increased reliability.
For those 48V systems that generate a 12V intermediate bus, the National +/- 48-V LM5066 and LM5064 system power and protection circuits accurately measure, protect and control the electrical operating conditions.
TPS40400 and TPS40422 analog PMBus controllers and the National system protection ICs extend TI’s portfolio of digital power products that meet any non-isolated or isolated power design requirement. UCD9K and UCD3K digital power controllers and UCD7K drivers provide built-in hardware features to make implementation of power topologies easier, faster and more accurate, while providing a high degree of configurability.
The TPS40400 comes in a thermally enhanced 24-pin, 3.5-mm x 5.5-mm QFN package. The TPS40422 comes in a 40-pin, 6-mm x 6-mm package, and is currently sampling with expected volume production later in the fourth quarter.
www.ti.com/digitalpower