High Bandwidth Power Amplifier with A Shunt Correction Cell

This paper proposes a dual-cell switching power amplifier with ultra-high small-signal bandwidth. A control strategy is introduced to guarantee system stability while two converter cells work together to increase the control bandwidth. Simulation results show that the proposed converter can achieve up to 33 times larger control bandwidths, compared with a conventional single-cell half-bridge converter working with the same switching frequency as the high-voltage cell.