April 23, 2019
transphormusa.com
TDHBG1200DC100_0v1
3
TDHBG1200DC100 User Guide
Figure 3. Functional block diagram
Using the evaluation
The mother board and daughter card can be used for evaluation of basic switching functionality in a variety of circuit
configurations. It is not a complete circuit, but rather a building block. It can be used in steady-state DC/DC converter mode with
output power up to 1.2kW.
When operating the board at high power (>500W), an external fan should be used to cool the heatsink on the daughtercard.
Configurations
Figure 4 shows the basic power connections for buck and boost modes. For buck mode, the HVdc input (terminals J2, J3) is
connected to the high-voltage supply and the output is taken from terminals J5 and J7. For boost mode, the connections are
reversed.
Note that in boost mode a load must be connected. The load current affects the output voltage up to the transition from DCM to
CCM. In buck mode the load may be an open circuit.
TP65H070LDG
TP65H070LSG
