资 源 简 介
The LM25115 controller contains all of the features necessaryto implement mulTIple output power converters uTIlizingthe Secondary Side Post RegulaTIon (SSPR) technique. TheSSPR technique develops a highly efficient and well regulatedauxiliary output from the secondary side switchingwaveform of an isolated power converter. RegulaTIon of theauxiliary output voltage is achieved by leading edge pulsewidth modulation (PWM) of the main channel duty cycle.Leading edge modulation is compatible with either currentmode or voltage mode control of the main output. TheLM25115 drives external high side and low side NMOSpower switches configured as a synchronous buck regulator.A current sense amplifier provides overload protection andoperates over a wide common mode input range. Additionalfeatures include a low dropout (LDO) bias regulator, erroramplifier, precision reference, adaptive dead time control ofthe gate signals and thermal shutdown.
