2kW, 48V to 400V, >93% Efficiency, Isolated Bidirectional DC-DC Converter Reference Design for UPS

(ACTIVE) TIDA-00951

Description & Features

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Key Document

Description

The 2-kW isolated bidirectional DC-DC converter reference design (TIDA-00951) is capable of power transfer between a 400-V DC-BUS and a 12-14 cell lithium battery pack for use in UPS, battery backup and power storage applications. This reference design works as active clamped boost converter with ZVS in the backup mode, transferring power from the 48V battery to the 400V DC-BUS. Operating as a voltage fed full-bridge battery charger, this reference design enables you to achieve >93% efficiency when charging a 48V battery from the 400V DC BUS. This reference design also has built-in protection for DC BUS and battery overcurrent as well as overvoltage protection.

Features
  • Digitally controlled isolated bidirectional DC/DC converter
  • Operates as active clamp full bridge boost converter with ZCS turn on along with ZVS at high load for the low-voltage FET and ZVS for high-voltage switches
  • Wide operating range from 36- to 60-V battery and 300- to 400-V DC bus
  • Cost optimized design using 100-V FET on low-voltage side, eliminates need for paralleling multiple FETs up to 2kW
  • Fast mode transfer from battery charging to back-up mode in less than 100uS
  • Uses the TMS320F28033 digital controller present on the TIDA-01281 reference design for controlling the working
  • High side current sensing for monitoring the battery current based on the INA240 on-board the TIDA-01141 reference design
  • Uses the reinforced isolated gate-driver UCC21520 present in the TIDA-01159 design for driving the high voltage full-bridge

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




TI Devices (14)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
AMC1301  Precision, ±250mV Input, 3µs Delay, Reinforced Isolated Amplifier  Special Function Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
CSD19536KCS  100V, N-Channel NexFET™ Power MOSFET  Power MOSFET  Sample & Buy Not Available
INA240  High/Low Side, Bi-Directional Zero-Drift Current Sense Amp w/ Enhanced PWM Rejection  Current Sense Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
LM4041A12  1.2-V Precision Micropower Shunt Voltage Reference, 0.1% accuracy  Voltage Reference  Sample & Buy Not Available
OPA376  Precision, Low Noise, Low Iq Operational Amplifier  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
SN6505B  Low-Noise 1-A , 420kHz Transformer Driver for Isolated Power Supplies  Isolation  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC126A  Quadruple Bus Buffer Gate With 3-State Outputs  Buffer/Driver/Transceiver  Sample & Buy Not Available
TLV1117  Single Output LDO, 800mA, Fixed and Adj., Internal Current limit, Thermal Overload Protection  Linear Regulator (LDO)  Sample & Buy View Design Kits & Evaluation Modules
TMP300  Resistor-Programmable, up to 18V-Capable Temp Switch and Analog Out Sensor  Temperature Sensors  Sample & Buy Not Available
TMS320F28033  Piccolo Microcontroller  Real-time Control  Sample & Buy View Design Kits & Evaluation Modules
TPS62160  3V-17V 1A Step-Down Converters with DCS-Control™  Step-Down (Buck)  Sample & Buy View Design Kits & Evaluation Modules
UCC21520  4A/6A, 5.7 kVrms Isolated Dual Channel Gate Driver  Isolation  Sample & Buy View Design Kits & Evaluation Modules
UCC27211A  120-V Boot, 4-A Peak, High Frequency High-Side and Low-Side Driver   MOSFET and IGBT Gate Drivers  Sample & Buy Not Available
UCC27517A  4A/4A Single Channel High-speed Low-side Gate Driver with 5V Negative Input Voltage Handling Ability  MOSFET and IGBT Gate Drivers  Sample & Buy Not Available

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 3617 02 Jun 2017 7,045
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 1995 02 Jun 2017 322
ZIP 6563 02 Jun 2017 643
PDF 1699 02 Jun 2017 696
PDF 226 02 Jun 2017 496
PDF 112 02 Jun 2017 832
PDF 676 02 Jun 2017 3,616


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