DEMO MANUAL DC2001A LTC3787EUFD 4-Phase High Current Synchronous Step-Up Converter Description Demonstration circuit 2001A is a step-up DC/DC converter The LTC3787 data sheet gives a complete description using two LTC3787EUFD dual-phase synchronous boost of the part, operation and application information, and controllers in a parallel configuration for high current, high must be read in conjunction with this demo manual for power 4-phase operation. the DC2001A. The DC2001A has an input supply voltage range from Design files for this circuit board are available at 6V to 24V. The converter provides an output voltage of DEMO MANUAL DC2001A Quick s p D Demonstration circuit 2001A is easy to set up to evalu- 4. Turn on the supply and adjust the voltage to the desired ate the performance of the LTC3787. Refer to Figure 1 value, up to 24V, while monitoring the output. for proper measurement equipment setup and follow the NOTE: Do not exceed 33V input. procedure below. 5. Once the proper output voltage has been established, 1. Set the jumper as follows: increase the current limit as necessary. JP1: FCC 6. Turn on the load and adjust as necessary. JP2: ON Optional 2. With all power off, connect the input power supply, 1. For pulse skip or Burst Mode operation, set jumper load, and meters using heavy duty cables, as shown in JP1 to PS or BM. Figure 1. 2. To shut down switching, set jumper JP2 to OFF. NOTE: Input supply must be capable of at least 65A at 12V, or 110A at 6V. 3. For power good indication, monitor PGOOD. 3. Preset the system load to 0A and the input supply to 4. For external clock synchronization, connect the clock 12V, 2A current limit. source to CLKIN and remove jumper JP1. V LOAD OUT + V A OUT + I OUT dc2001a F01 + I IN + A V IN V SUPPLY IN Figure 1. Proper Measurement Equipment Setup dc2001af 2 ure roce tart