Buck Boost Converter circuit +12 V input voltage (10v. .25 there may be between)-13v as a favor from the (inverting) power 250mA optionally output voltage D2 zener diode changing can be increased or reduced (5v … 20v) circuit operating frequency of 12kHz pcb design (sprint layout) done according to the size quite small sMD components
FEATURES
Output current: 250mA without cooling (1A continuous and 2A instantaneous (with cooling)
Input voltage: 10 to 25V DC
Output voltage: -5 to -20V depends on the voltage of zener diode D2
Working frequency: 12kHz
Efficiency: 85%
555, the regulation of the output voltage is produced by the negative feedback loop (R4, D2, T1, R3), when the voltage reaches the threshold value, the zener diode D2 (can be freely selected to obtain different voltages), at this point a reset is generated in IC1 (pin 4), and the pulses at the pin 3 output of IC1 are shortened or extended according to the need, and in this case, the way to keep the voltage constant. Although no specific IC is used for inverters, the performance and stability of the circuit with different loads are high.
Project files and details of; Buck-Boost (Inverting) Converter
Password: 320volt.com
Published: 2011/07/09 Tags: 555 timer circuits, dc dc converter circuit, power electronic projects
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