DC1198B-A Analog Devices

DEMO MANUAL DC1198B-A LTM4605 20V, 5A High Efficiency Buck-Boost Module Regulator Description Demonstration circuit DC1198B-A features the can be used not only to reduce undesirable frequency LTM 4605EV, the high efficiency, high density switch harmonics but also to parallel LTM4605 to provide high mode buck-boost Module regulator. The LTM4605EV can output current. The LTM4605 data sheet must be read in regulate its output voltage from an input voltage above, conjunction with this demo manual prior to working on below, or equal to the output. The input voltage range or modifying DC1198B-A. of DC1198B-A is from 4.5V to 20V with a preset output Design files for this circuit board are available at voltage of 12V. The rated load current is 5A, although DEMO MANUAL DC1198B-A Uq ick stArt proceDU Demonstration circuit DC1198B-A is an easy way to evaluate 4. Once the proper output voltage is established, adjust the performance of the LTM4605EV. Please refer to Figure the load within the operating range and observe the 1 for proper measurement equipment set-up and follow output voltage regulation, ripple voltage, efficiency and the procedure below: other parameters. Cooling fan and lower current sensing resistor are necessary for V < 5V and I = 5A. IN OUT 1. Place jumpers in the following positions for a typical 12V application: 5. To measure input and output ripple, please refer to OUT Figure 2 for proper setup. RUN CLOCK MODE START 6. The voltage of pin PLLFLTR determines the switching ON PROG CCM SSO frequency. Modify R6 and R7 to adjust the switching frequency. Turn off the power supply before attempting 2. With power off, connect the input power supply, load to remove and replace R6 and R7. Do not allow voltage and meters as shown in Figure 1. Preset the load to 0A at pin PLLFLTR exceed 2.4V. and V supply to be less than 20V. IN 7. The Inductor, RS1 and RS2 should be modified to ac- 3. Turn on the power at the input. The output voltage commodate certain input and output condition. Please should be 12V 2%. refer to the LTM4605 data sheet for recommended component values. DC1198B F01 Figure 1. Test Setup of DC1198B-A dc1198bafa 2 re