12 volt power supply circuit using LTM4096 IC

Description: A very simple, high-efficiency switching mode buck-boost power supply circuit can be designed using the LTM4609 switching regulator IC. This circuit will provide a fixed output voltage of 12 volts. As illustrated in the schematic, the switching power supply requires few external electronic components. The LTM4609 supports an operating input voltage range of 4.5V to 36V and an output voltage range of 0.8V to 34V, which can be set by a resistor. This high-efficiency design delivers up to 4A current in boost mode operation. 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.

The LTM4609 is a highly integrated buck-boost converter that allows for efficient power conversion across a wide range of input and output voltages. The circuit is designed to maintain a stable output voltage of 12V regardless of variations in input voltage within the specified range. The efficiency of the circuit is enhanced by the use of a current mode control architecture, which provides improved transient response and stability during sudden changes in load conditions.

In the schematic, the LTM4609 is connected to a few essential passive components, including input and output capacitors, an inductor, and a feedback resistor network. The input capacitors are crucial for minimizing voltage ripple and ensuring stable operation, while the output capacitors help maintain the desired output voltage during load transients. The inductor is selected based on the desired current rating and inductance value, which affects the overall efficiency and performance of the converter.

The feedback resistor network is used to set the output voltage to the desired level of 12V. By selecting appropriate resistor values, the output voltage can be accurately adjusted within the range supported by the LTM4609. The device also features a synchronization pin, allowing it to be synchronized with an external clock signal. This capability is particularly useful in applications where multiple converters are used, as it helps to minimize electromagnetic interference (EMI) by reducing the generation of harmonic frequencies.

Overall, the LTM4609-based buck-boost converter is a versatile and efficient solution for applications requiring stable voltage regulation across varying input conditions, making it suitable for a wide range of electronic devices and systems.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.

LTM46 09 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. 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.