Texas Instruments bq24750, User Manual

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Test Summary
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1.5 Recommended Operating Conditions
SYMBOL DESCRIPTION MIN TYP MAX UNIT
V
IN
Supply voltage Input voltage from ac adapter input 18 19 22 V
V
BAT
Battery voltage Voltage applied at VBAT terminal of J8 6 7–16.8 20 V
I
AC
Supply current Maximum input current from ac adapter 0 4.5 A
I
chrg
Charge current Battery charge current 2 3 or 4 6 A
T
J
Operating junction temperature range 0 125 °C
2 Test Summary
2.1 Definitions
This procedure details how to configure the HPA207 evaluation board. On the test procedure the following
naming conventions are followed. See the HPA207 schematic for details.
VXXX : External voltage supply name (VADP, VBT, VSBT)
LOADW: External load name (LOADR, LOADI)
V(TPyyy): Voltage at HPA207 internal test point TPyyy. For example, V(TP12) means the voltage
at TP12.
V(Jxx): Voltage at HPA207 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 : HPA207 internal jumper Jxx terminals are shorted
Jxx OFF: HPA207 internal jumper Jxx terminals are open
Jxx (-YY-) ON: HPA207 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 (PS1): a power supply capable of supplying 20V at 5A is required.
Power Supply 2 (PS2): a power supply capable of supplying 5V at 1A is required. (for HPA207-001, -004,
or -005 only)
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 ± 20V (or above), 0 ± 6A (or above).
Or: A 20-V at 6-A (or above) dc power supply in parallel with a 3 Ω , 100W+ power resistor which is
thermally capable or well cooled for at least 100W power dissipation.
4 bq24750/50A/51/51A/51B/52/53 EVM (HPA207) For Multi —Cell Synchronous SLUU283D – May 2007 – Revised March 2010
Notebook Charger and System Power Selector
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