Texas Instruments LMG2640EVM-090 Daughter Card Evaluation Module
Texas Instruments LMG2640EVM-090 Daughter Card Evaluation Module (EVM) is designed to provide a quick and easy platform to evaluate TI's integrated GaN devices in any half-bridge topology. The board is intended to be interfaced with a larger system using the six power pins and ten digital pins on the bottom edge of the board. Power pins form the main switching loop consisting of a high-voltage DC bus, switch node, and power ground. The digital pins control the LMG2640 device with PWM gate inputs, provide auxiliary power with low voltage supplies, and report faults as a digital output.
Evaluating the LMG2640EVM's performance is most easily demonstrated using a synchronous buck/boost motherboard from TI (LMG342X-BB-EVM). The daughter card easily plugs into the motherboard and interfaces all power and digital control in an open-loop configuration for full system control. A recommended footprint is also provided to interface the daughtercard with a custom system for further testing.
Features
- High-side gate-drive level shifter
- Smart-switched bootstrap diode function of 0 QRR
- Integrated lossless current sensing output measurement
- Absolute maximum voltage rating of 650V
- Low-side and high-side cycle-by-cycle overcurrent protection and overtemperature protection connected to output FAULT signal
Kit Contents
- One LMG2640EVM-090 board
- Evaluation module disclaimer Read Me
Required Equipment
- DC voltage source that is capable of supplying the input of the evaluation module up to 480V
- DC bias source that is capable of 12V output up to 1.5A
- Function generator
- Capable of 0V to 5V square wave output with adjustable duty cycle and frequency in the operating range
- TI recommends operating the LMG2640EVM-090 and motherboards with a switching frequency between 50kHz and 200kHz in hard-switching converters
- Oscilloscope
- Capable of at least 200MHz operation
- A 1GHz or greater oscilloscope and probes with short ground springs are required for accurate measurements
- DC multimeters
- Capable of 650V measurement
- Designed for determining operation and efficiency (if desired)
- DC load that is capable of 650V operation at up to 20A in current-mode operation
- Fan
- For the heat-sink-version evaluation module daughter card, a dedicated cooling fan is attached to the back side of the heat sink
- It is recommended that the user makes sure the fan is powered by the 12V power supply before a test
Applications
- LLC or TPPFC for gaming, PoE, monitor PSU, PD adapter
- ACF, AHB for PD adapter, server aux
- Motor drive inverter for hair dryer, vacuum, servo motor
- Inverter or micro-inverter for solar, renewable energy
- Buck or boost converters
Board Layout
Related Development Tool
Texas Instruments LMG342X-BB-EVM Evaluation Module (EVM)
Used to configure any of the LMG342xR0x0 half-bridge boards as a synchronous buck converter.
Publicado: 2024-12-13
| Actualizado: 2024-12-23