renga92
Member level 5
500 Khz full bridge RF amplifier SMPS design and debugging
Hi. I am in the process of designing a Voltage controlled SMPS with VOUT varying from 20 - 200 V set based on user input. Maximum current rating is set at 4 Amps. This SMPS will be the power source of Full bridge RF amplifier, amplifying sine wave(500 Khz) to few thousand volts (Ex: VMax : 2000 V).
With the initial design and development of SMPS in place, the RF amplifier is able to work properly with SMPS VOUT values upto 70 V. Post that value, any increase in SMPS voltage, VOUT becomes unstable and varies randomly. Impedance of the RF amplifier load varies from 10 - 4000 ohms and maximum driving current limit is set at 500mA.
I would need some help in understanding the factors that dictates the proper operation of SMPS and RF Amplifier.
Hi. I am in the process of designing a Voltage controlled SMPS with VOUT varying from 20 - 200 V set based on user input. Maximum current rating is set at 4 Amps. This SMPS will be the power source of Full bridge RF amplifier, amplifying sine wave(500 Khz) to few thousand volts (Ex: VMax : 2000 V).
With the initial design and development of SMPS in place, the RF amplifier is able to work properly with SMPS VOUT values upto 70 V. Post that value, any increase in SMPS voltage, VOUT becomes unstable and varies randomly. Impedance of the RF amplifier load varies from 10 - 4000 ohms and maximum driving current limit is set at 500mA.
I would need some help in understanding the factors that dictates the proper operation of SMPS and RF Amplifier.