Hi,
I'm using the TPS65135 to generate a +/-2.5V dual supply for a bipolar analog to digital converter. After reviewing the spec sheet, I've chosen R1 = 100kOhm, R2=100kOhm, and R3=200kOhm which should provide me with the proper voltage outputs. All capacitor values used are those supplied in the datasheet (4.7uH and 10uH), with a 2.2uH Inductor. When measuring the voltage, however, I'm only getting +/-2.2V and am not sure why. If it helps, all capacitors used are polarized but are placed properly to account for the needed orientation (cap on negative supply has + on ground, - on output. Cap on positive supply has + on output, - on ground). This circuit is also built on a breadboard. I know breadboards have a very small capacitance between pins, but I figured it wouldn't be enough to see a 10% drop in both outputs from their expected value.
Thanks for your help!
