TI PMBus power solutions target POL designs
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 (POL) designs.
The 2MHz TPS40400 single channel controller has a 3 to 20V input range, while the new 1.2MHz TPS40422 dual channel or multi phase controller has a 4.5 to 20V input voltage range.
Both devices are said to combine high performance analogue voltage regulation with digital control to achieve more than 90% efficiency, tight output voltage accuracy and design flexibility.
TI claims the devices have a unique adaptive voltage scaling capability, saving up to 25% more power than previous solutions and eliminating the need for up to 12 external components.
The TPS40400 and TPS40422 can be combined with the National 17V LM25066 system power and hot swap protection IC as a complete PMBus compliant solution for 12V systems with input protection and power conversion.
