Methods and apparatus for processing a substrate

    公开(公告)号:US11482402B2

    公开(公告)日:2022-10-25

    申请号:US17127838

    申请日:2020-12-18

    IPC分类号: H01J37/32 H05H1/46

    摘要: Methods and apparatus for processing a substrate are provided herein. For example, an apparatus can be a controller for a high peak power radio frequency (RF) generator. The controller comprises a control logic circuit in operable communication with an RF generator operating in a burst mode, the control logic circuit configured to receive a power, P, request at a predetermined duty cycle, δ, from a plasma processing chamber, determine a peak maximum power, Ppeakmax, based on a maximum average power, Pavgmax, and a maximum absolute power, Pabsmax, of the RF generator and the predetermined duty cycle, and transmit a control signal to the RF generator to limit a peak power, Ppeak, to the plasma processing chamber based on the Ppeakmax.