This control loop provides a fast transient response which is required in server applications while making implementation simple and easy.Improved gate driver technology has reduced dead times to 10ns, resulting in improved efficiency across the entire operating range.
Both regulators extend the output current range of Exar’s PowerBlox line of high current POL regulators up to 20A.The patented COT control loop enables operation with ceramic output capacitors without degradation in transient performance and eliminates loop compensation components, making a simpler and more reliable design.
Additional features targeted at server applications include a power good pin which maintains a low impedance when the chip is unpowered thereby avoiding false power good signals. There is also s second output voltage sense pin, which ensures that any failure of the main feedback does not result on damaging voltages being applied to expensive low voltage digital circuitry.These POLs have full range 0.1% load regulation and 1% output accuracy over the full -40°C to 125°C temperature range.
There are also a number of supervisory and protection features for proper sequencing, safe operation under abnormal operating conditions and light load operation is built in.
Specified over the full -40°C to 125°C temperature range, the XR76116 and XR76120 are offered in a 5mm x 6mm TQFN package.
