Texas Instruments LMQ644A2QEVM Evaluation Board
Texas Instruments LMQ644A2QEVM Evaluation Board is designed to evaluate the LMQ644A2-Q1 dual buck DC/DC converters with integrated power MOSFETs. This evaluation board is a single-output, dual-phase, synchronous buck converter board that provides 12A of output current. The output voltage can be individually programmed to a fixed 3.3V and 5V or adjustable using external feedback resistors. The LMQ644A2QEVM board supports input voltage surges up to 36V and dips as low as 3V. This device's switching frequency is adjustable from 100kHz to 2.2MHz using the RT pin and also can be synchronized to an external clock to eliminate beat frequencies.
Features
- 12A output dual-phase interleaved synchronous buck converter
- 6V to 36V wide operating voltage range
- 3.3V and 5V output voltages
- 2.1MHz default switching frequency
- Rated for 6A per channel
- High efficiency across a wide load-current range
- Input EMI filter with electrolytic capacitor for parallel damping (input filter can handle up to 8A input current)
- Clock synchronization and FPWM mode provide constant switching frequency across the full load range
- Integrated input capacitors enable low-noise switching performance
- Pin selectable spread spectrum
- Peak current-mode control architecture with external loop compensation
- Peak current limiting with hiccup-mode overcurrent protection
- Thermal shutdown protection with hysteresis
- PGOOD indicator
- Programmable input UVLO
- 6-layer, 2-oz PC board design
Related Converters
Texas Instruments LMQ644xx-Q1 36V Synchronous Buck DC-DC Converters
These DC-DC converters are designed for high-current single or dual outputs.
EVM Test Setup
Đã phát hành: 2024-06-04
| Đã cập nhật: 2024-06-19