Power conversion & charging: choosing the components
A charger or power supply divides into five blocks: AC-DC control, the switching stage, isolated feedback, protection, and output regulation. This guide shows which J.P. Electronics manufacturer lines serve each block, from five-watt adapters to high-density GaN designs.
Which of our lines serves each block?
| Block | Our lines | What decides the choice |
|---|---|---|
| AC-DC control | Chipown On-Bright | Power level, standby consumption, integration level |
| Switching stage | Navitas Taiwan Semiconductor Good Ark | Silicon or GaN, frequency, efficiency target |
| Isolated feedback | Cosmo Everlight Novosense | Optocoupler or digital isolator, loop bandwidth |
| Protection | Bel Good Ark Taiwan Semiconductor | Surge class, fusing, inrush handling |
| Output & bias regulation | HTC Korea IK Semicon Microchip | Rail count, accuracy, quiescent current |
| Passives & magnetics | CCTC Bel | Ripple current, DC bias, footprint |
When is GaN worth it?
When switching frequency is what shrinks the design. GaN lets the magnetics and the whole converter get smaller for the same power, which pays for itself in adapters, chargers and anywhere density sells. At low power and low frequency, a well-chosen silicon design is still hard to beat on cost.
Optocoupler or digital isolator for feedback?
Optocouplers are cheap and proven; their transfer ratio drifts with age and temperature. Digital isolators cost more, switch faster and do not age the same way. High-volume cost-driven designs usually stay opto; long-life industrial designs increasingly go digital.
Working on a power conversion & charging design?
Email your specification and we will map it to the right families across our lines, with samples for the ones you shortlist.