We have a +/-12V regulated power supply as part of our board design.The board takes a 5V input and passes this though a TI DCP020515DU DCDC. This gives us +/-15V unregulated. Each 15V rail has been tested with loads up to 60mA (our requirement is 30m...
Posted on February 10, 2016 at 10:46HiWith regard to this device's circuit as shown in fig 2 of the datasheet, should the input be AC coupled or can it directly accept a bi-polar input signal?Ta.
Thanks again.That TI part won't do -12V, but I see others (Micrel) that say suitable for all types of capacitor. MIC5270/71. I will look in more detail at those.
Many thanks for your time and the detailed answer.The L79L datasheet does suggest that the output voltage should be between -11.4 and -12.6 with an input of -14.5 or higher. Our DCDC (which switches at 800kHz) has a steady 15V when measured under ful...
Thanks. Yep, that would certainly be a solution.Or, I could find out why the simple linear regulator just doesn't work as expected.I did ask ST support directly, but I didn't get any. For now, I'm using a reg from ON Semi which is stable.
