DC-DC Step-up converter
February 11, 2010 6 Comments
This is again a spin-off from another project, the IR Beacon for my robot.
For some reason I wanted the beacon to be independently supplied in electricity AND from a single rechargeable battery.
So I decided to use a DC-DC step-up converter, with the well known Maxim 756.
Right now it works, BUT there are some strange issues: it does generate the expected voltage (within 0.1 – 0.2 V if I were to believe my old voltmeter) but it can only hold it for currents of less than 100mA ! Whereas in the doc it says it should support 2-300mA !
If you have any idea about what might happen, don’t hesitate to leave a comment…
Here’s for completeness, the circuit diagram from the specifications (it’s really quite simple, I didn’t have to do any other formal diagram, just wired the few components together):