In the past decade

active gate control（AGC） methods for insulated-gate power switching devices have stimulated increasing research interest in the field of high-voltage high-power power electronic applications

since they are effective in controlling switching transients of power devices and require no modification in main circuits. Firstly

the basic structures and circuit implementation of active gate drivers（AGDs） are introduced. Secondly

the state-of-the-art of AGC methods are reviewed in detail. Then the hot topics of AGC methods are analyzed and elaborated from the angles of control strategies

stability analysis

adaptive control capability

multifunctionality and AGC methods for wide-band gap power switching devices. Finally

some urgent problems and development trends are discussed.