Test Summary
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R25 and R28 can be changed to regulate output.
VBAT = 2.1V × [1+ R25/R28]; for bq2461x;
VBAT = 1.8V × [1+ R25/R28]; for bq2463x;
Adjust the input voltage as required. Output set to operate at 21V (bq2461x) or 18V (bq2463x) from the
factory.
2 Test Summary2.1 Definitions
This procedure details how to configure the HPA422 evaluation board. On the test procedure the following
naming conventions are followed. See the HPA422 schematic for details.
VXXX: External voltage supply name (VADP, VBT, VSBT)
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): Voltageat jack terminal 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)): Currentgoing out from the YYY terminal of jack XX.
Jxx(BBB): Terminalor pin BBB of jack xx
Jxx ON: Internal jumper Jxx terminals are shorted
Jxx OFF: Internaljumper Jxx terminals are open
Jxx (-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 Equipment
2.2.1 Power Supplies
Power Supply #1 (PS#1): a power supply capable of supplying 30-V at 5-A is required.
Power Supply #2 (PS#2): a power supply capable of supplying 5-V at 1-A is required.
Power Supply #3 (PS#3): a power supply capable of supplying 5-V at 1-A is required.
2.2.2 LOAD #1
A 30V (or above), 5A (or above) electronic load that can operate at constant current mode
2.2.3 LOAD #2
A Kepco bipolar operational power supply/amplifier, 0 ±30V (or above), 0 ±6A(or above).
2.2.4 Oscilloscope
Tektronix TDS3054 scope or equivalent, 10X voltage probe.
4bq2461x/bq2463xEVM (HPA422) Multi-Cell Synchronous Switch-Mode Charger SLUU396A–January 2010– Revised July 2010
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