Energy & Power
Digital Power
Current sensing, current sharing and over-current protection for switching supplies, multi-phase DC/DC and 48V DC distribution — balancing accuracy with bandwidth.
Digital Power
Digital power moves the control loop into an MCU or DSP: flexible, but more sensitive to feedback quality — any delay or noise in the current sample and the loop either oscillates or trips spuriously.
RJMICRO linear Hall current sensors provide isolated, insertion-loss-free current feedback suited to primary and secondary side sensing, while the differential Hall approach offers better common-mode rejection for per-phase current sensing in multi-phase bucks. Low-quiescent-current LDOs supply digital controllers and communication interfaces.
Systems and scenarios covered
Switching supplies and DC/DC
- Primary and secondary side current sensing
- per-phase current and sharing in multi-phase bucks
- over-current and short-circuit protection
Telecom and server power
- Hot-swap and current sharing on 48V DC rails
- PoE current monitoring