EZA11K-320240 is an 11kW isolated bidirectional DC-DC converter manufactured by TDK-Lambda.

二、Core Function

It is a high-power DC power supply with bidirectional energy flow:It enables mutual conversion between high-voltage DC (320V side) and battery DC (240V side).

Bidirectional: It can charge the battery and also allow the battery to discharge back to the high-voltage side.Isolated type: Electrical isolation between the high-voltage and low-voltage sides for high safety and strong anti-interference performance.1U rack-mount: Dimensions 422.8×43.6×530mm, standard installation size for computer rooms.

三、Applications

Battery charge and discharge management: Energy conversion between lithium/lead-acid batteries and high-voltage DC bus.Energy storage peak shaving and valley filling: Batteries are charged by photovoltaic/wind power in the daytime and discharged during peak demand or at night.Backup Power (BCP): When mains power fails, the battery supplies power to servers and computer rooms through this unit.Regenerative energy recovery: Recycle braking energy from elevators, cranes and robots back to the power grid or DC bus.High Voltage DC (HVDC) power supply: Voltage regulation and battery interface for 320V DC systems in data centers and communication base stations.

四、Specifications

Model Definition: EZA11K‑320240

• 11K: Max power 11kW

• 320: High-voltage side rated 320V DC

• 240: Battery side rated 240V DC

Voltage Range

• Low Voltage (LV, Battery side): 150–300V DC

• High Voltage (HV): 240–400V DC

Current: LV side ±45.8A; HV side ±34.4AEfficiency: Typical 95%Control: RS485 communication, supports monitoring and setting of voltage, current and energy flow direction.

五、Scope of Application

• Energy storage system: Industrial & commercial energy storage cabinets, container energy storage, residential high-voltage battery packs.

• Data center / Computer room: 320V HVDC power supply with battery backup.

• New energy power generation: Supporting energy storage for photovoltaic and wind power, power smoothing and standby power supply.

• Industrial drive: Regenerative energy recovery for cranes, elevators, AGVs and robots.

• Telecom power supply: High-voltage DC base station power supply with lithium battery backup.

六、Summary

EZA11K‑320240 is an 11kW 1U isolated bidirectional DC-DC converter from TDK-Lambda. It realizes bidirectional energy conversion between high-voltage batteries and 320V DC bus, widely used in energy storage, data centers, new energy and industrial regenerative energy recovery scenarios.