Tag
power
2 articles.
- Dropout voltage: why the datasheet number is not yours
Dropout is a resistance times your load, not a figure: TI's 160 mV at 200 mA is 0.8 Ω, so 100 mA drops 80 mV. Where it comes from, and how to check headroom.
- Inrush current limiter: sizing an NTC, or using a MOSFET
A discharged bulk capacitor is a short circuit at power-on. Sizing the NTC takes three numbers from Ametherm and TDK, and knowing when a MOSFET is better.