# Software Defined Power Supplies with Werner Johansson

- Show: [The Amp Hour](https://hardwarepodcasts.com/podcast/the-amp-hour)
- Published: 2023-07-25
- Length: 1h 11m
- Episode: 640
- Page: https://hardwarepodcasts.com/podcast/the-amp-hour/2023-07-25-software-defined-power-supplies-with-werner-johansson
- Listen: https://theamphour.com/640-software-defined-power-supplies-with-werner-johansson/

## Summary

Werner Johansson of Qoitech discusses the design and application of software-defined power supplies, specifically the ARC and ACE programmable power supplies and electronic loads. He explains how these devices enable firmware teams to characterize battery behavior, simulate battery profiles, and automate testing by integrating high-speed power measurement with GPIO and serial port data. The conversation covers the technical challenges of digital control loops, USB-C power delivery security, and the importance of simultaneous sampling for accurate power calculation.

## Chapters

- [0:00](https://hardwarepodcasts.com/podcast/the-amp-hour/2023-07-25-software-defined-power-supplies-with-werner-johansson#t=0) Introduction and History of Software-Defined Power
- [5:46](https://hardwarepodcasts.com/podcast/the-amp-hour/2023-07-25-software-defined-power-supplies-with-werner-johansson#t=346) The Qoitech ARC: Design and Isolation Challenges
- [13:14](https://hardwarepodcasts.com/podcast/the-amp-hour/2023-07-25-software-defined-power-supplies-with-werner-johansson#t=794) USB-C Power Delivery and Security Risks
- [23:50](https://hardwarepodcasts.com/podcast/the-amp-hour/2023-07-25-software-defined-power-supplies-with-werner-johansson#t=1430) Digital vs. Analog Control Loops in Power Supplies
- [34:12](https://hardwarepodcasts.com/podcast/the-amp-hour/2023-07-25-software-defined-power-supplies-with-werner-johansson#t=2052) The Qoitech ACE: Architecture and Simultaneous Sampling
- [50:11](https://hardwarepodcasts.com/podcast/the-amp-hour/2023-07-25-software-defined-power-supplies-with-werner-johansson#t=3011) Battery Characterization and Simulation Features

## Topics

- [Analog & power electronics](https://hardwarepodcasts.com/topic/analog-and-power-electronics)
- [Microcontrollers & dev platforms](https://hardwarepodcasts.com/topic/microcontrollers-and-platforms)
- [Batteries & low-power design](https://hardwarepodcasts.com/topic/batteries-and-low-power)
- [Security & privacy](https://hardwarepodcasts.com/topic/security-and-privacy)
- [PCB design & layout](https://hardwarepodcasts.com/topic/pcb-design)

## Most relevant to

companies scaling up

## Mentioned

- Qoitech (company)
- ARC (product)
- ACE (product)
- Microchip Xmega (chip)
- NXP i.MX RT1060 (chip)
- Keysight (company)
- Keithley (company)
- Analog Discovery (product)
- USB-C PD (other)

## Related episodes from other shows

- [278: Bricks' Batteries Last Forever (Repeat)](https://hardwarepodcasts.com/podcast/embedded-fm/2022-02-11-278-bricks-batteries-last-forever-repeat) (Embedded.fm)
- [Software-Defined IoT and Sustainable Design | MicroEJ's Semir Haddad | Internet of Things Podcast](https://hardwarepodcasts.com/podcast/iot-for-all-podcast/2023-10-03-software-defined-iot-and-sustainable-design-microejs-semir-haddad-internet-of-th) (IoT For All Podcast)
- [304: ADC Channel Six](https://hardwarepodcasts.com/podcast/embedded-fm/2019-09-26-304-adc-channel-six) (Embedded.fm)
- [216: Bavarian Folk Metal](https://hardwarepodcasts.com/podcast/embedded-fm/2017-09-22-216-bavarian-folk-metal) (Embedded.fm)
- [170: Electron Gnomes](https://hardwarepodcasts.com/podcast/embedded-fm/2016-10-04-170-electron-gnomes) (Embedded.fm)

## Citing this page

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