公开(公告)号：US11844155B2

公开(公告)日：2023-12-12

申请号：US17827195

申请日：2022-05-27

申请人： Lutron Technology Company LLC

发明人： Russell L MacAdam ,  Joseph T. Parent ,  Russell Weightman

IPC分类号： H05B39/04 ,  H05B45/10 ,  H05B45/31 ,  H05B45/3575 ,  H05B45/38 ,  H05B45/50 ,  H02M5/257 ,  H02M1/00 ,  H05B45/59

CPC分类号： H05B39/044 ,  H05B45/10 ,  H05B45/31 ,  H05B45/3575 ,  H05B45/38 ,  H02M1/0006 ,  H02M5/2576 ,  H05B45/50 ,  H05B45/59

摘要： A load control device for controlling power delivered from an AC power source to an electrical load may comprise a thyristor, a gate current path, and a control circuit. The control circuit may be configured to control the gate current path to conduct a pulse of gate current through a gate terminal of the thyristor to render the thyristor conductive at a firing time during a half-cycle of the AC power source. The control circuit may operate in a first gate drive mode in which the control circuit renders the gate current path non-conductive after a pulse time period from the firing time. The control circuit may operate in a second gate drive mode in which the control circuit maintains the gate current path conductive after the pulse time period during the half-cycle.