Linear Technology LTM8052EV Demo Board, 36Vin, 5A 2-Quadrant CVCC Step-Down µModule Voltage Regulator DC1866A DC1866A 데이터 시트

제품 코드

DC1866A

dc1840afa

DEMO MANUAL DC1840A

Quick start proceDure

Figure 1. DC1682A Backside. Setting AUTO and MID Jumpers

Figure 2. Inserting the DC1682A into J1 of the DC1680A

Demonstration kit DC1840A includes the DC1682A

daughter card and DC1680A mother board. The kit is set

up for evaluating the LTC4270/LTC4271. Follow the pro-

cedure below and refer to Figures 1 through 4 for proper

equipment setup.
1. On the DC1682A set AUTO jumper JP1 to HI (Figure 1)

to enable AUTO pin mode.

2. On the DC1682A set MID jumper JP2 to LO (Figure 1)

to disable midspan mode.

3. Align pin 1 of the 34-pin male connector on the DC1682A

with pin 1 of the 34-pin female connector on the

DC1680A (Figure 2). Pin 12 is polarized to assist with the

alignment. Carefully push the DC1682A straight down

until the two 34-pin connectors are flush with each other.

4. On the DC1680A, connect a supply with the positive

rail to POS and negative rail to NEG (Figure 3). Use a

power supply capable of sourcing the maximum load

expected (12 ports × 850mA ≥ 10.2A). Ramp the supply

up to 55V.

5. Connect up to 12 PDs to the DC1680A, J4 (Figure 3).
6. The DC590 is optionally connected to the DC1680A

connector J5 with a 14-pin ribbon cable (Figure 3). A

GUI for the LTC4270/LTC4271 is brought up by QuikEval

for I

C interfacing from a PC (Figure 4).