Test Summary
2
Test Summary
This procedure describes one test configuration of the HPA758 evaluation board for bench evaluation.
2.1
Definitions
This procedure details how to configure the HPA758 evaluation board. The following naming conventions
are followed. See the bq24270/271 QFN EVM schematic for details.
VXXX :
External voltage supply name (VADP, VAT, VSAT)
LOADW:
External load name (LOADR, LOADI)
V(TPyyy):
Voltage at internal test point TPyyy. For example, V(TP12) means the voltage at
TP12.
V(Jxx):
Voltage at header Jxx
V(TP(XXX)):
Voltage at test point XXX. For example, V(ACDET) means the voltage at the test
point which is marked as ACDET.
V(XXX, YYY):
Voltage across point XXX and YYY
I(JXX(YYY)):
Current going out from the YYY terminal of header XX
Jxx(BBB):
Terminal or pin BBB of header xx
JPx ON :
Internal jumper Jxx terminals are shorted.
JPx OFF:
Internal jumper Jxx terminals are open.
JPx (-YY-)
ON: Internal jumper Jxx adjacent terminals marked as YY are shorted
Measure:
→
A,B
Check specified parameters A, B. If measured values are not within specified limits,
the unit under test has failed.
Observe
→
A,B
Observe if A, B occur. If they do not occur, the unit under test has failed.
Assembly drawings have location for jumpers, test points, and individual components.
2.2
Recommended Test Equipment
2.2.1
Power Supplies
Power Supply #1 (PS#1) capable of supplying 6 V at 3 A is required.
If not using a battery as the load, then power supply #2 (PS#2) is can be used. 4 A is required to power
the circuit shown in
.
2.2.2
Load #1 Between BAT and GND
Testing with an actual battery as the load is the best way to verify operation in the system. If a batttery is
not available, then a circuit similar to the one shown in
can simulate a battery when connected to
a power supply.
6
QFN-Packaged bq24270/271 Evaluation Modules
SLUU924 – April 2012
Copyright © 2012, Texas Instruments Incorporated