LM5115SDX/NOPB

75V、次级侧后置稳压器/同步降压控制器 16-WSON

The LM5115 is a versatile switching regulator controller. It has two main application configurations. The first is utilizing the Secondary Side Post Regulation SSPR technique to implement multiple output power converters. In the second configuration, it can be used as a standalone synchronous buck controller Please see for more details. The SSPR technique develops a highly efficient and well regulated auxiliary output from the secondary side switching waveform of an isolated power converter. Regulation of the auxiliary output voltage is achieved by leading edge pulse width modulation PWM of the main channel duty cycle. Leading edge modulation is compatible with either current mode or voltage mode control of the main output. The LM5115 drives external high side and low side NMOS power switches configured as a synchronous buck regulator. A current sense amplifier provides overload protection and operates over a wide common mode input range. Additional features include a low dropout LDO bias regulator, error amplifier, precision reference, adaptive dead time control of the gate signals and thermal shutdown.