Artículo wiki · Colección 04

Inversor de Medio Puente

Referencia técnica sobre Inversor de Medio Puente para el diseño, integración e implementación de sistemas de energía inalámbrica.

6 minArtículo 19/50Electrónica de Potencia

Half-Bridge Inverter — educational diagram — Fig.: Diagrama educativo de “Half-Bridge Inverter”.

A half-bridge places two switches in series across the DC bus with the load connected from the midpoint to ground or to a second midpoint in a split-cap topology. It applies half the bus voltage to the tank in simple PWM, making it attractive for compact and cost-sensitive charging modules.

Half-bridge designs need a stable midpoint — often two bulk capacitors — and careful balance to avoid DC bias in the transformer or coil series path.

01Strengths

Fewer switches and drivers than full-bridge.
Natural fit for symmetric resonant tanks with split capacitors.
Widely used in mid-power consumer and industrial WPT where bus voltage can be raised.

Half-Bridge Inverter — supporting diagram — Fig.: Ilustración de apoyo para “Half-Bridge Inverter”.

02Challenges

Same coil current requires higher peak tank voltage or higher bus than full-bridge. Midpoint capacitor RMS current can heat smaller caps. Bootstrap high-side drive limits duty cycle and refresh timing — validate at minimum pulse width used for control.

03Dock fit

Pedestal chargers under roughly 3–5 kW when thermal and voltage budget allow.
Modules paralleled for lane charging with synchronized control.
Receiver-side half-bridge active rectifiers in related topologies — similar layout rules.