Control circuit and method for constant turn-on time transformation circuit
A constant on-time and conversion circuit technology, which is applied in the control/regulation system, DC power input conversion to DC power output, electrical components, etc., can solve the problems of unsuitable size and high price, and achieve good load response and improve performance effect
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[0023] Such as image 3 Shown is a flowchart of an improved constant on-time DC conversion method according to the present invention. When the circuit starts to run, a feedback signal V FB And a compensation signal V slope The algebraic sum and a reference signal V R Compare. When the feedback signal V FB And compensation signal V slope The algebraic sum is greater than the reference signal V R 时, namely V FB +V slope >V R When the current switching state of the output stage of the circuit is maintained; when the feedback signal V FB And compensation signal V slope The algebraic sum of is less than the reference signal V REF 时, namely V FB +V slope R When the upper switch tube M of the output stage of the circuit 1 Open, down switch tube M 2 Turn off and set the compensation signal V slope Make it increase after clearing, the upper switch tube M 1 Maintained constant on-time T ON The conduction state of the time period. When T ON At the end, if V FB +V slope R , ...
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