The TPS546D24SEVM-2PH evaluation module (EVM) is a two-phase buck converter with two TPS546D24S devices. The TPS546D24S device is a stackable synchronous buck with PMBus® interface that can operate from a nominal 2.95-V to 16-V supply. The device allows programming and monitoring through the PMBus interface.
Two TPS546D24S devices are configured as a two-phase buck converter in factory default. Output current is evenly distributed in the two devices; both the negative and positive output terminals are connected together.
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The TPS546D24SEVM-2PH is a two-phase buck design using two stacked TPS546D24S devices. The TPS546D24SEVM-2PH is designed for a nominal 12-V bus and to produce a regulated 0.8-V output at up to 80 A of load current. The TPS546D24SEVM-2PH is designed to demonstrate stacking operation of the TPS546D24S in a two-phase, low-output voltage application while providing a number of test points to evaluate the performance of the devices. The TPS546D24SEVM-2PH can be modified to single-phase buck converters by changing the components assembled. See Tip and Barrel Measurement for more information on single-phase configuration.
The following warnings and cautions are noted for the safety of anyone using or working close to the TPS546D24SEVM-2PH. Observe all safety precautions.
![]() | Warning | The TPS546D24SEVM-2PH circuit module may become hot during operation due to dissipation of heat. Avoid contact with the board. Follow all applicable safety procedures applicable to your laboratory. |
![]() | Caution | Do not leave the EVM powered when unattended. |
The circuit module has signal traces, components, and component leads on the bottom of the board. This may result in exposed voltages, hot surfaces, or sharp edges. Do not reach under the board during operation.
The circuit module may be damaged by over temperature. To avoid damage, monitor the temperature during evaluation and provide cooling, as needed, for your system environment.
Some power supplies can be damaged by application of external voltages. If using more than 1 power supply, check your equipment requirements and use blocking diodes or other isolation techniques, as needed, to prevent damage to your equipment.
The communication interface is not isolated on the EVM. Be sure no ground potential exists between the computer and the EVM. Also be aware that the computer is referenced to the battery- potential of the EVM.