公开(公告)号：US20240162868A1

公开(公告)日：2024-05-16

申请号：US18238341

申请日：2023-08-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jaejin LEE ,  Jeonggyu Park ,  Moohyun Park ,  Hyunkyu Chon

IPC: H03F3/24 ,  H02M1/00 ,  H02M3/00 ,  H02M3/335 ,  H03F1/32

CPC classification number: H03F3/245 ,  H02M1/0058 ,  H02M3/01 ,  H02M3/33592 ,  H03F1/3241 ,  H03F2200/451

Abstract: In embodiments, a power supply circuit is provided. The power supply circuit may comprise a plurality of direct current direct current (DCDC) converter circuits and a pulse width modulation (PWM) controller operatively connected to the plurality of DCDC converter circuits. The PWM controller may be configured to obtain a current voltage of a power amplifier. The PWM controller may be configured to obtain a reference voltage for the power amplifier. The PWM controller may be configured to generate PWM control signals for the plurality of DCDC converter circuits based on a difference between the current voltage and the reference voltage. The PWM controller may be configured to provide the PWM control signals to the plurality of DCDC converter circuits. Each DCDC converter circuit of the plurality of DCDC converter circuits may comprise a transformer, a primary active clamping circuit connected to a primary end of the transformer, and a secondary resonance converter circuit connected to a secondary end of the transformer. The secondary resonance converter circuit may comprise a diode configured to provide a regeneration current from the secondary end of the transformer to an output end of the secondary resonance converter circuit.