LTC3114-1 evaluation board SCP-LTC3114-1-EVALZ

Question

On the evaluation board for the LTC3114 Diode D2 connects to SW2 on the IC, What does it do, and under what conditions is it needed? We are supplying 12V at 1amp from 9 to 30V input to external customer supplied devices, these may have there own input capacitance will that effect the circuit stability?

JRViernes · Accepted Answer

Hi Steve, 
 I strongly recommend to remove D2 if your board has this. This part should be DNI (Do not install) as this should only a provision for some applications and with bad layout. For 12V output application, D1 should also be removed. D1 should be only their for ~5V output application to improve efficiency of the converter. Additional Capacitance should not be a problem for the circuit stability. 
 If you have further question, you may reach me at my email (joseph.viernes@analog.com) as a seldom check this thread. Regards, 
 Joseph)

Partner Forums

Partner Libraries

Products Mentioned

LTC3114-1 evaluation board SCP-LTC3114-1-EVALZ