12 volt power supply using LTM4096
A very simple high efficiency switching mode buckboost power supply circuit can be designed using the LTM4609 switching regulator IC . This switching power supply circuit will provide an fixed output voltage of 12 volt . As you can see in the schematic circuit , this switching power supply circuit require few external electronic components .
Included in the package are the switching controller, power FETs and support components.
For this switching power supply circuit project you will need to use an input voltage range between 5and 12 volt .
LTM4609 supports an operating input voltage range of 4.5V to 36V and supports an output voltage range of 0.8V to 34V, set by a resistor. This high efficiency design delivers up to 4A current in boost mode operation .
Only the inductor, sense resistor, bulk input and output capacitors are needed to finish the design.
The high switching frequency and current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The LTM4609 can be frequency synchronized with an external clock to reduce undesirable frequency harmonics.
Fault protection features include overvoltage and foldback current protection.
If you require more than 4A output current at 12 volt output voltage you can connect two LTM4096 ICs in parallel .