Help designing a power supply
I need to create a power supply that will accept 12V DC and output 5V DC All devices to be through hole. I have a 811-2195-5-ND which is a 3.3V supply and so I’d need the same thing in 5V if I use it. However, it’s pretty pricey as I need to create 10 of these.
I have a commercial board that uses a JQ6500 board and provides the wanted specs. I wonder if I can duplicate it for my purposes. It uses a bridge rectifier to protect against reverse connections on the 12V side. Next, it uses a LT7806CV for a regulator.
That’s it for the commercial board. Is there a good reason to use other components for my application?
1 Reply
Hi @techielew there are some DC-DC Linear regulator modules out there. These are compact through-hole modules, which use TI chips (TPS5632X (*TPS56321). Product Link
Specifications
* Compact size: 16mm x 13mm
- Input Voltage: up to 15V DC
- Output Voltage: 5V
- Continuous Current: 1.2A for 5V
- Peak Current: 3A
- Protections: O/P short circuit(hiccup)/Thermal
Here TWO reasons to use this Module
* The main advantage of using this LDO is to reduce the heat generated in the Linear Regulator
- reduce the size of the design as now you will not need to put a separate heatsink on your board.
- Price Approx. $1.28/Unit
I hope this information will be useful to you
Best wishes!
Tindie
DC-DC LDO 5V by MAKERPALS on Tindie
DC-DC LDO is a DC-DC Module with a TO-220 form factor. This is designed to replace existing Linear regulators in use, like LM7805, etc.