DC1723A Analog Devices

DEMO MANUAL DC1723A LTM8050 58V , 2A Step-Down IN Module Regulator DESCRIPTION Demo circuit DC1723A features the LTM 8050, a Module simply by modifying or installing the appropriate resistors (micromodule) step-down converter that can deliver up to and/or capacitors. 2A of output current. DC1723A is designed for a 5V, 2A The LTM8050 data sheet gives a complete description of output from a 7.5V to 58V input at 400kHz. The wide input the part, operation and application information. The data range of the LTM8050 allows a variety of input sources sheet must be read in conjunction with this Quick Start such as automotive batteries and industrial supplies. At Guide for the demo circuit 1723A. light loads, the LTM8050 enters Burst Mode operation Design files for this circuit board are available at to maintain high efficiency and low output ripple over a DEMO MANUAL DC1723A QUICK START PROCEDURE Note: Make sure that the input voltage does not exceed 58V. Demonstration circuit 1723A is easy to set up to evalu- ate the performance of the LTM8050. Refer to Figure 1 4. Check for the proper output voltage. for proper measurement equipment setup and follow the Note: If there is no output, temporarily disconnect the load procedure below: to make sure that the load is not set too high or is shorted. Note: When measuring the input or output voltage ripple, 5. Once the proper output voltage is established, adjust care must be taken to avoid a long ground lead on the the loads within the operating range and observe the oscilloscope probe. Measure the input or output voltage output voltage regulation, ripple voltage, efficiency and ripple by touching the probe tip directly across the terminals other parameters. of the input or output capacitors. See Figure 2 for proper scope probe technique. 1. Place JP1 in the ON position. 2. With power off, connect the input power supply to VIN and GND. 3. Turn on the power at the input. Figure 1. Measurement Equipment Setup dc1723af 2