ZHOU Qianyu, TONG Liqing, LIU Kefu. Research of High-power High-voltage Pulsed Current Source[J]. High voltageapparatus, 2017, 53(4): 60-64. DOI: 10.13296/j.1001-1609.hva.2017.04.011.
Research of High-power High-voltage Pulsed Current Source
For high-voltage high-power laser diode driving circuit with high precision and low-loss requirements
this paper presents a pulsed current source scheme based on constant current control by high-voltage high-current Darlington. System consists of driving circuit using high-power fast amplifier
and adopts closed-loop current control technology. For the Darlington running in low-power state
the collector-emitter works at low-voltage operation mode. Current source can output stable pulses with continuously adjustable pulse width
amplitude and duty cycle.The device that is able to work at several hundred volts can be used to laser diodes
resistors
LED and other loads. Maximum current value of output current pulse is five hundred amperes
with rising edge being only tens of microseconds
and its accuracy is 1% or less. Working at stable mode of low-current charging and large-current discharging