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OBC 22kW

OnboardCharger 22kW (OBC 22kW)

Stercom Ultracompact 22kW Onboard Charger for fast charging
image-gallery-1494/_media/_processed_/48/63/a0/Stercom-OBC-22kW-onboard-charger_768_1920x1080.pngStercom OBC 22 kW- Onboard ChargerStercom Ultracompact 22kW Onboard Charger for fast charging

Highlights

  • Ultra compact 22 kW OBC with the output versions 450V/70A, 800V/40A, or 850V/32A
  • Very efficient switching technology using Silicon Carbide Semi-Conductors
  • Identical outline dimensions and plugs of all versions
  • Suitable for 12V/24V electronic supply
  • AC input power factor > 99 %, very low THD
  • Supports AC charging via CCS/Type2 according to EC 61851 as well as Direct AC mode
  • Integrated DC charging with EPLC- (Embedded Power Line Communication) charge controller fully compatible with DIN SPEC 70121 and ISO15118
  • Very low power consumption in “Sleep Mode”

The optimized and adaptive charging process

Our ultra-compact Onboard Charger (OBC_22kW) is compatible with all single-phase and three-phase AC charging stations as well as Type 2 wallboxes. The optimized charging process ensures gentle and efficient charging for all common high-voltage batteries across various voltage classes, up to 850V DC. By utilizing the latest Silicon Carbide (SiC) semiconductor technology, we set new standards in efficiency, size, and weight. For very large battery systems, charging power can be scaled up by connecting multiple OBC_22kW units in various parallel modes.

Features

Optimized Charging for Various Battery Types

The OBC 22 kW ensures efficient and safe charging across different high-voltage battery technologies. With its three output voltage options (450V, 800V, 850V), it seamlessly adapts to high- and medium-voltage batteries, making it an excellent choice for electric vehicles.

Flexible Cluster Operation for Increased Charging Power

The OBC 22 kW automatically detects DC fast-charging stations. With built-in Embedded PowerLine Communication (EPLC), it facilitates seamless communication between the battery and the charging station, ensuring a safe and standards-compliant charging process (DIN SPEC 70121 & ISO 15118)—without requiring additional EVSE or EVCC modules.

Versatile Applications

For higher power demands, OBC 22 kW units can operate in cluster configurations, where two chargers share a single 63A AC input, communicating via an independent CAN Bridge. This parallel setup enables scalable charging, ideal for large EV fleets.

Technical Specifications

The OBC 22 kW is designed for a wide range of industries, offering tailored solutions for:

  • Public transportation – Efficient, fast-charging solutions for electric buses & transit vehicles.
  • Construction machinery – Durable charging infrastructure for electric construction equipment.
  • Municipal vehicles – Reliable power solutions for waste collection & street-cleaning fleets.
  • Marine applications – Effective charging for electric propulsion systems in boats & ships.
  • Special-purpose vehicles – Optimized charging for off-highway, agricultural & mining vehicles.

System Overview

image-gallery-557/_media/_processed_/93/14/bc/OBC_GRafik_PLC_512_1920x1080.png
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Technical Data

AC InputValueUnits
Voltage range three-phase (Phase – Phase L1 → L2 → L3)

(EU) 346 - 440

(US) 190 - 504

Vrms
Voltage range single-phase (L1 – N)

(EU) 200 - 250

(US) 95 -135

Vrms
Max. input current @ 3~ input ( per phase)32Arms
Max. input current @ 1~ input32Arms
Input frequency45 - 65Hz
Power Factor (at three – phase)> 99%
Starting Inrush Current< 50A
Leakage current @ 3~ input< 3.5mA

DC OutputOBC_22kW-450OBC_22kW-800OBC_22kW-850
Voltage range200 - 450VDC420 - 800VDC550 - 850VDC
Max Charging Current – three phase70A40A32A
Max Charging Power – three phase22kW22kW22kW
Max Charging Current – single phase16A16A16A
Max Charging Power – single phase6,5kW6,5kW6,5kW
Output Voltage ripple – three phase+ - 2%+ - 2%+ - 2%
Switch ON time5s5s5s
Output Voltage tolerance – three phase+ - 1%+ - 1%+ - 1%
Charging ModeCCCV CCCV CCCV
Output current tolerance – three phase+ - 5%+ - 5%+ - 5%
Output current ripple – three phase+ - 2%+ - 2%+ - 2%

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