4-channel power output module (with negative voltage output)

 
Chip Introduction:
LM2596 Series
. The LM2596 is a fixed-frequency switching power supply regulator with the following features:

Input voltage range: 4.5V to 40V;
Adjustable output voltage (via external resistor divider);
Multiple output versions available;
Output current: Up to 3A;
High efficiency: Up to 90% or more;
Built-in over-temperature and short-circuit protection .

TPS5430.
The TPS5430 is a high-efficiency buck converter with the following features:

Input voltage range: 4.5V to 40V;
Output current: 3A;
Programmable switching frequency;
Built-in soft-start, over-temperature protection, and short-circuit protection. LM2596 Series Circuit Design

: 12V Output: Using the LM2596S-12 chip, the voltage is 12V. 5V Output: Using the LM2596S-5 chip, the output voltage is 5V. 3.3V Output: Using the LM2596-3.3 chip, the output voltage is 3.3V. TPS5430 Circuit Design -12V Output: Using the TPS5430 chip, the output voltage is set to -12V via an external feedback resistor network. Protection circuit includes a fuse and a diode to prevent reverse polarity . Input voltage: 12V-36V (LM2596-12 will not function properly below 12V). The module shown in the diagram has two chip pins that are not grounded; this error has been corrected in the current project. 12V input, 3.3V output ; 12V input, 5V output ; 12V input, 12V output; 12V input, -12V output.