← 返回 JSSC 论文列表JSSC 2024第10期Power Management0.18µm BCD
An Isolated DCDC Converter Using a Cross-Coupled Shoot-Through-Free Class-D Osci
提出一种低EMI隔离DC-DC转换器，采用交叉耦合无直通Class-D振荡器和电压串联组合变压器。
峰值效率51%，最大输出功率1.2W，满足CISPR-32 Class B标准
隔离DC-DC转换器低EMIClass-D振荡器电压串联变压器交叉耦合结构
▸全对称拓扑Class-D振荡器降低偶极子辐射
▸交叉耦合结构避免直通电流
▸电压串联组合变压器实现高电压转换比且不降低耦合系数
Abstract
A low electromagnetic interference (EMI) iso-
lated dc–dc converter with a cross-coupled shoot-through-free
Class-D oscillator and a voltage series-combining transformer
is presented. The proposed Class-D oscillator features a fully
symmetrical topology to greatly reduce the dipole emissions of
the converter, and the shoot-through current is avoided by the
cross-coupled structure that biases the gates of the PMOS and
NMOS with different dc voltages. Moreover, a voltage series-
combining transfor