Many power supplies use hold-up capacitors to keep enough energy at the full-wave or bridge rectifier output to supply a load when the rectified voltage drops and rises again at the next half-cycle of ...

Integrating both a 36 V fast buck and linear regulator, the LTM8028 µModule®regulator from Linear Technology produces a low noise, digitally programmable, regulated output voltage (Fig. 1). Fig. 1.