Cart Low Noise Split Rail Non-Isolated Boost + - 12V Power Supply Status: ACTIVE
LOWNOISESPLITRAILNONISO-BOOST-REF
Description
This circuit boosts 5V to a low noise +/- 12V bias at 40mA for use in analog circuitry. This design uses the LM5001 fully integrated switch mode regulator in concert with a very small EP5 transformer to create a non-isolated positive and negative power rail (for isolation see "± 5V Isolated, Low Noise Split Rail Generator User Guide" below). This design uses less than 1 square inch of double sided PCB with components on only one side. The same basic circuit can be used to develop other voltages such as +/- 15V or +/- 5V.
Features
| Input Range | Output 1 | Output 2 | |
|---|---|---|---|
| LM5001 | Min 4.5V | 12V | -12V |
| Max 5.5V | 40 mA |
40 mA |
The performance of the reference design is as follows:
- 5V Input
- +/- 12V Outputs
- Over 40 mA Output Current
- Low Ripple Noise for split rail analog circuits (< 2 mV p-p)
- Small Size ~1" x 1"
The performance of the reference design is as follows:
- 5V Input
- +/- 12V Outputs
- Over 40 mA Output Current
- Low Ripple Noise for split rail analog circuits (< 2 mV p-p)
- Small Size ~1" x 1"
