DC-DC converter with feed-forward and feedback control

摘要

The voltage of 36-V battery ( 10 ) is dropped by the DC-DC converter ( 12 ) to charge the 12-V battery ( 14 ). The switching ON/OFF of the DC-DC converter ( 12 ) is feed forward controlled by the controlling portion ( 20 ). This can cope with the voltage change at the 36-V battery ( 10 ). The output voltage of the DC-DC converter ( 12 ) is feed back controlled by a differential amplifier ( 16 ) and PID ( 18 ) and feed back by the controlling portion ( 20 ).