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The TPS543820 dc/dc converter is a synchronous buck converter designed to provide up to a 8-A output. The input (VIN) is rated for 4 V to 18 V. Rated input voltage and output current range for the evaluation module are given in Table 1-1.
The high-side and low-side MOSFETs are incorporated inside the TPS543820 package along with the gate-drive circuitry. The low drain-to-source on-resistance of the MOSFET allows the TPS543820 to achieve high efficiencies and helps keep the junction temperature low at the rated output current. Fixed frequency advanced current mode control allows you to synchronize the regulators to an external clock source. An external divider allows for an adjustable output voltage. The TPS543820 FSEL and MODE pins provide selectable switching frequency, soft start time, current limit, and internal compensation. Lastly, the TPS543820 includes an enable pin and a power good output which can be used for sequencing multiple regulators.
This evaluation module includes two designs with the TPS543820. The first design is designed to demonstrate the small printed-circuit-board areas that may be achieved when designing with the TPS543820 regulator. The small area design fits within 100 mm2. The second design is designed to demonstrate the high efficiency that can be achieved when designing with the TPS543820 regulator. The second design also includes jumpers that can be used to easily evaluate the features of the TPS543820.
EVM | INPUT VOLTAGE RANGE | OUTPUT CURRENT RANGE |
---|---|---|
TPS543820EVM | VIN = 4 V to 18 V | 0 A to 8 A |
The following warnings and cautions are noted for the safety of anyone using or working close to the TPS543820EVM. Observe all safety precautions.
Warning | The TPS543820EVM may become hot during operation due to dissipation of power in some operating conditions. Avoid contact with the board. Follow all applicable safety procedures applicable to your laboratory. |
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.
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.