Q: TPS61032 output voltage accuracy by 1302722

Hi, I want to use the TPS61032 design to system, but the D/S show total accuracy is -3% ~ 3% and VFB for TPS61030, it's confuse for me. I want to know the TPS61032 output voltage accuracy.  If the accuracy out 2%, could help recommend the suitable solution for accuracy achieve 2%?

 

 


A: Re: TPS61032 output voltage accuracy by 1090425

The total accuracy of the TPS6103x is +/- 3%.  Note that the fixed versions of the IC include the voltage divider resistors which are an additional source of error beyond the variation in the FB voltage.

The +/-3% is an absolute worst case based on statistical analysis of the IC variation, temperature variation, etc.  A large portion of the accuracy is temperaturerelated.  If you can ensure that your operating temperature range will be significantly less than the -40 to +125 C spec, then you will get better accuracy than +/-3%.  A power supply with total accuracy of +/-2% over all conditions will be very hard to achieve.