TDK Launches Non-isolated 12.5 kW Three-phase Power Supplies for Distributed Power Architectures
TDK Corporation, through its TDK-Lambda brand, has introduced the TDK-Lambda TPF12500-385 series, a line of non-isolated three-phase power supplies. These units are specifically designed for Distributed Power Architectures (DPA), offering a nominal power rating of 12.5 kW, with a maximum output of 13.1 kW. They provide a regulated output voltage of 385 Vdc and achieve a high efficiency of 97.5%, making them suitable for powering isolated high-voltage DC-DC converters or DC Microgrids.
A key differentiator of the TPF12500 series is its wide-range input capability, operating from Delta or Wye 360 - 528 Vac three-phase inputs. This broad input range facilitates global operation and eliminates the need for costly step-down transformers, while also helping engineers maintain balanced phase loading for enhanced system reliability. For increased output capacity without requiring system redesign, up to two power supplies can be connected in parallel utilizing droop-mode current sharing.
The design prioritizes efficiency and reliability, featuring low internal losses that enable effective cooling via two internal fans. The use of board-to-board connectors and reduced wiring further contributes to improved system efficiency, lower electrical losses, and greater reliability by minimising potential failure points associated with cable fatigue, loose connections, and vibration. Additionally, the series integrates RS-485 communications for comprehensive remote monitoring capabilities.
Specifications
| Product | Maximum Output Power | Nominal Power Rating | Regulated Output Voltage | Efficiency | Input Voltage | Input Configuration | Enclosure Dimensions (W x H x D) | Ambient Operating Temperature |
|---|---|---|---|---|---|---|---|---|
| TDK-Lambda TPF12500-385 series | Up to 13.1 kW | 12.5 kW | 385 Vdc | 97.5 % | 360 - 528 Vac | Delta or Wye three-phase | 202.6 x 111.1 x 711.2 mm | -10 to +40 °C |
Key Features
- Non-isolated three-phase power supply series designed for Distributed Power Architectures.
- Delivers up to 13.1 kW with a nominal rating of 12.5 kW.
- Provides a regulated output voltage of 385 Vdc.
- Provides 97.5 % efficiency.
- Operates from 360 - 528 Vac Delta or Wye three-phase inputs.
- Up to two power supplies can be connected in parallel using droop-mode current sharing.
- Uses two internal fans for cooling, enabled by low internal losses.
- Uses board-to-board type connectors to reduce system losses.
- Provides RS-485 communications for remote monitoring of input voltage, output current, internal temperature, fan fail, and status signals.
- Provides isolated DC OK, dropped phase signals, remote on/off, over-temperature warning, and a 13 V, 0.2 A standby supply.
- Can cold start at -20 °C and operate in ambient temperatures from -10 to +40 °C.
- The enclosure measures 202.6 x 111.1 x 711.2 mm (W x H x D) and can be used in 3U high racking systems.
Applications
- Semiconductor manufacturing equipment
- Data centers
- RF power amplifiers in radars
- Industrial automation
- Burn-in systems
- Other test systems
- Powering isolated high-voltage DC-DC converters
- DC Microgrids
Availability
The TDK-Lambda TPF12500-385 series is now available from TDK-Lambda, providing a non-isolated three-phase power supply solution for Distributed Power Architectures with a nominal 12.5 kW power rating and up to 13.1 kW output capability. The series is intended for applications including semiconductor manufacturing equipment, data centers, RF power amplifiers in radars, industrial automation, and burn-in and test systems.
