TPD4E02B04EVM

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The TPD4E02B04EVM is a thermally enhanced power distribution switch IC designed by Texas Instruments. It uses an integrated, four channel, highly efficient 4A switch bank in a space-saving solution. This device is used in applications such as battery chargers, portable and power equipment, HVAC, consumer and entertainment devices, medical devices, white goods, automotive, and industrial equipment.

This evaluation module is used to demonstrate the performance of the TPD4E02B04 device, and to provide PCB layout guidance and a platform for system level evaluation. The module includes a Reference board, an external Quasi-Resonant Flyback converter, a power analysis system, a control board, and a host board. It comes with an accompanying user guide and other necessary components.

The Reference Board is the foundation of the TPD4E02B04EVM. It is based on a two-layer PCB and features 4 x 2DPAK package mounted thermally enhanced TPD4E chips, 4 x Load switch connected to each internal channel of the TPD4E IC, and an external 2N2M Device for the ON/OFF control signal. It also has RJ45 connector which provides connection to the Thermocouple and current sense for thermal management and current monitoring.

The external Quasi-Resonant Flyback converter included with the TPD4E02B04EVM is based on a two-layer PCB, and provides feedback control of the output voltage. The primary components include a Power MOSFET, an optocoupler, a ceramic capacitor and an inductor (all used to build the flyback controller, a ZVS driver MOSFET, and an N-channel MOSFET (which carries the load current). The output voltage can be adjusted up to 19V by using a MCU programming port.

The power analysis system employed by the TPD4E02B04EVM board measures various electrical key performance parameters and details the characteristics of the load switch. The power analysis system is connected to a GUI which provides real-time data, which enables system developers to optimize efficiency and evaluate the transient performance of their systems.

The Control Board contains various components such as a PWM generator, a micro SD card reader, an analog-to-digital converter, a SWD programmer, a 3.3V and an enable voltage regulator. It is used to generate gate drive signal for the Power MOSFET, as well as feeding the output power directly to the load switch. The supply voltage for the board is 5V and the board can be easily configured using the GUI provided by Texas Instruments.

The Host Board is the primary GUI-based interface between the TPD4E02B04EVM and the user. It connects to the load switch and the power analysis system. The board enables the user to control the operation of the switch and read out power dissipation, operating temperature, output voltage, efficiency, etc. By using the host board, various operating parameters of the device can be optimized, such as the gate-threshold voltage, the on-time, the power-dissipation etc.

The working principle of the TPD4E02B04EVM is straightforward. It uses a combination of hardware and control software to provide robust and reliable power distribution switch IC. The Reference Board supplies the switching current to each of the four load switches. The external Quasi-Resonant Flyback converter supplies power to the Load switch, and its output can be adjusted up to 19V. The Power analysis system measures electrical key performance parameters and details the characteristics of the load switch. The Control Board provides the gate drive signal for the Power MOSFET, and the Host Board is used to control the operation of the switch.

In conclusion, the TPD4E02B04EVM is a thermally enhanced power distribution switch IC which is designed to provide highly efficient 4A switch banks in a space-saving solution. It is intended for applications such as battery chargers, portable and power equipment, HVAC, consumer and entertainment devices, etc. This evaluation module is used to demonstrate the performance of the device, and provides PCB layout guidance and a platform for system level evaluation. It includes boards for Reference, external Quasi-Resonant Flyback converter, Power Analysis System, Control and Host. The working principle of the TPD4E02B04EVM is through the use of hardware and control software.

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