Two-way output voltage circuit diagram using MAX668

Published:2011/7/24 21:10:00 Author:Ecco | Keyword: Two-way output voltage | From:SeekIC

Two-way output voltage circuit using MAX668 is shown as the chart. It can convert +12 V input voltage to 72V/100mA or -24V/400mA output. The circuit is mainly composed of the MAX668 boost converter and MAX4130 op amp and transformer T1. MAX668 is the step-up controller; MAX4130 is the adder, which is used for the feedback of the two-way output voltage; the turns ratio of transformer T1 is set to 1:2:4. When the input voltage changes ± 10%, while the load changes from zero to full load, the circuit allows the two-way output voltage regulation in ± 5%.



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