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Test Summary

Figure 2. BAT Load (PR1010) Schematic

2.2.3 Load #2 Between SYS and GND

Although not required, a resistive load in the form of a decade box or electronic load capable of sinking up

to 3 A can be used.

2.2.4 Meters

Four equivalent voltage meters (VM #) and two equivalent current meters (CM #) are required. The current

meters must measure at least a 4-A current.

2.3 Recommended Test Equipment Setup

1. For all power connections, use short, twisted-pair wires of appropriate gauge for the amount of the

current.

2. Set PS #1 for 6 V ± 100 mV, 3-A current limit, and then turn off supply.

3. If BAT_Load (PR1010) as shown in Figure 2 is used, connect PS #2, set to approximately 3.1 V, to the

input side (PS #2 ±) of BAT_Load (PR1010), then turn off PS #2.

4. Connect the output side of the battery or BAT_Load (PR1010) in series with current meter (multimeter)

#2 (CM #2) to J9 and J11 or J10 (BAT, GND). Ensure that a voltage meter is connected across J9 or

TP8 and J11 or TP6 (BAT, GND).

5. Connect the electronic load or resistor decade box in series with a current meter (multi-meter) to

J6(SYS, GND). Ensure the electronic load is in current mode and set to 0 A or the resistor decade box

is set to the maximum resistance.

6. Connect VM #3 across J4 or TP4 and J8 (SYS, GND).

7. Connect VM #4 across J12 and J14 (DRV, GND).

8. Ensure jumpers are at the default factory settings per Section 1.6.

9. After the preceding steps are accomplished, the test setup for HPA759 is as shown in Figure 3

SLUU917–April 2012 QFN-Packaged bq24278 Evaluation Module

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