← 返回 JSSC 论文列表JSSC 2022第5期Power Management0.18-µm CMOS
Fixed-Switching-Frequency Background Capacitor-Current-Sensor Calibration for DC
提出一种固定开关频率背景电容电流传感器校准技术，用于DC-DC转换器以实现快速负载瞬态响应。
2-A/4-ns step-up (step-down) load transient, 8.8 µs calibration period at 30 MHz switching frequency
电容电流传感器DC-DC转换器负载瞬态响应背景校准固定开关频率
▸固定开关频率背景校准技术
▸克服现有技术需降低开关频率的瓶颈
▸支持负载瞬态或动态电压缩放事件中断后重新激活
Abstract
Background capacitor-current-sensor (CCS)
calibration (CAL) is proposed for dc–dc converters to achieve
fast load-transient response for small undershoot V
US, overshoot
VOS, and short settling time tS in the output voltage VO.
The CCS’ impedance ZCs is calibrated to a scaled replica
of the output capacitor’s impedance ZCo, which varies with
printed-circuit-board parasitics, process-voltage-temperature
variations, and aging. Thus, the CCS shunts a current I
Cs
equal to a scaled output-capacitor