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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 Summary
2.1Definitions
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): | Voltage at 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)): | Current going out from the YYY terminal of jack XX. |
Jxx(BBB): | Terminal or pin BBB of jack xx |
Jxx ON: | Internal jumper Jxx terminals are shorted |
Jxx OFF: | Internal jumper Jxx terminals are open |
Jxx | 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.
2.2Equipment
2.2.1Power Supplies
Power Supply #1 (PS#1): a power supply capable of supplying
Power Supply #2 (PS#2): a power supply capable of supplying
Power Supply #3 (PS#3): a power supply capable of supplying
2.2.2LOAD #1
A 30V (or above), 5A (or above) electronic load that can operate at constant current mode
2.2.3LOAD #2
A Kepco bipolar operational power supply/amplifier, 0 ±30V (or above), 0 ±6A (or above).
2.2.4Oscilloscope
Tektronix TDS3054 scope or equivalent, 10X voltage probe.
4 | bq2461x/bq2463x EVM (HPA422) | SLUU396A |
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