Texas Instruments TPS546D24SEVM-2PH Converter Evaluation Module
Texas Instruments TPS546D24SEVM-2PH Converter Evaluation Module (EVM) is a 2-phase buck converter with two TPS546D24S devices providing a single 0.8V output. The TPS546D24A device is a stackable synchronous buck converter with a PMBus interface that can operate from a nominal 2.95V to 16V input supply. The device allows programming and monitoring via the PMBus® interface with a user-configurable write lock feature for improved security. The Texas Instruments TPS546D24SEVM-2PH is designed to demonstrate the stacking operation of the TPS546D24S in a two-phase, low-output voltage application while providing several test points to evaluate the performance of the devices.
Features
- Output voltage is marginable and trimmable using the PMBus interface
- Programmable UVLO, soft start, and enable through the PMBus interface
- Programmable overcurrent warning and fault limits and programmable response to faults via the PMBus interface
- Programmable overvoltage and undervoltage warning and fault limits and programmable response to faults via the PMBus interface
- Programmable turn-on and turn-off delays
- Regulated 0.8V output up to 80ADC steady-state output current
- Convenient test points for probing critical waveforms
Required Equipment
- Voltage Source
- The input voltage source VIN must be a 0V to 20V variable DC source capable of supplying a minimum of 16ADC to support 80A load with 5V input
- Multimeters
- It is recommended to use two separate multimeters: one meter to measure VIN and the other to measure VOUT
- Output Load
- It is recommended to use a variable electronic load for the test setup
- To test the full load current this evaluation module supports, the load must be capable of sinking at least 80A
- Oscilloscope
- When using an oscilloscope to measure the switching node voltage or voltage ripple, measure using a Tip-and-Barrel method
- Fan
- During prolonged operation at high loads, it can be necessary to provide forced air cooling with a small fan aimed at the evaluation module
- Maintain the surface temperature of the devices on the evaluation module below the device's rated temperature
- USB-to-GPIO Interface Adapter
- A communications adapter is required between the evaluation module and the host computer
- This evaluation module is designed to use TI's USB-to-GPIO or USB-to-GPIO2 Adapter
- Recommended Wire Gauge
- Input VIN and GND to T1 and T2 (GND) (12V input) – The recommended wire size is AWG #12, with the total length of wire less than 2 feet (1-foot input, 1-foot return)
- Output T3 and GND T5 (0.8V output) – The minimum recommended wire size is AWG #10, with the total length of wire less than 2 feet (1-foot output, 1-foot return)
- A thicker wire gauge can be required to minimize the voltage drop in the wires
Board Layout
Development Tools
Texas Instruments TPS546A24AEVM-1PH Converter Evaluation Module
Designed for the evaluation of the TPS546A24A 10A buck converter.
Texas Instruments USB-TO-GPIO2 USB Interface Adapter EVM
Serves as an interface adapter or a bridge between a host PC and one or multiple targeted devices.
Related Converters
Texas Instruments TPS546D24S SWIFT™ Step-Down PMBus® Converter
Highly integrated with manufacturer-specific PMBus commands and extended write protect and Passkey.
Published: 2023-05-02
| Updated: 2025-03-05