Thanks a lot. I knw sg3524 is for voltage mode control. Actually i would like to use average current mode control as my buck converter feedback control. But i hav no experience in doing electronic project, i think it is better to start familiar with the PWM first so my friend recomend me try to use this sg3524.
What u means 'pins 12&13 tied to drain'?? What difference if i connect it to Vin?
ya the RT & CT are not shorted, is my careless. thanks 4 ur remind. because i am using n channel mosfet then the emiter pin should go ir2117 input; if use p channel then is collector go the input pin right? is it correct nw?
i am using sg3524 to do my buck converter. i use ir2117 to drive my high side power mosfet (irf540). can anyone help me to check my open loop test circuit. to obtain duty cycle more than 50% pin11 & 14 were shorted is it? how about pin12 & 13? thanks 4 ur help. ;)
i am using sg3524 to do my buck converter. i use ir2117 to drive my high side power mosfet (irf540). can anyone help me to check my open loop test circuit. to obtain duty cycle more than 50% pin11 & 14 were shorted is it? how about pin12 & 13?
SG3524 buck converter
in Electronic Projects Design/Ideas
Posted
Thanks a lot. I knw sg3524 is for voltage mode control. Actually i would like to use average current mode control as my buck converter feedback control. But i hav no experience in doing electronic project, i think it is better to start familiar with the PWM first so my friend recomend me try to use this sg3524.
What u means 'pins 12&13 tied to drain'??
What difference if i connect it to Vin?
My converter specification:
input: 10-15V
output: 5V
switching freqquency: 100kHz
output ripple: 1%
As u say bootstrap circuitry is onboard, can u please kindly suggest me which PWM it is?