Texas Instruments bq24072, User Manual

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Test Summary
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4 SLVU274E – November 2008 – Revised January 2017
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bq24072/3/4/5/9(T) and bq24230/2 1.5-A Single-Chip Li-Ion and Li-Polymer
Charge Management IC EVM
4 Test Summary
This section covers the setup and tests performed in evaluating the EVM.
4.1 Equipment
• Power supply (+5.25 ±0.25 Vdc), current limit set to 2 A ±0.2 A
• Three Fluke 75 DMMs (equivalent or better)
• Oscilloscope, Model TDS220 (equivalent or better)
4.2 Equipment and EVM Setup
• Preset P/S#1 to 5.25 V ±0.25 V, 2 A ±0.25-A current limit, turn off and connect to J1-IN/GND ( + to IN
and – to GND)
• Connect a 10-
Ω
, 10-W resistor to J2-OUT/VSS
• Connect a fully discharged (Vbat <2.8 V) Battery to J3-BAT+/VSS (+ to BAT+ and – to VSS).
• Apply the jumpers as per Table 3 .
• For the bq2407xEVM, adjust the potentiometers as follows (measure resistance from TP# to VSS):
– R8 (ILIM-TP12) = 750 Ω (743 to 757); R11 (ISET-TP16) = 1 k Ω (0.98 k Ω to 1.02 k Ω ) and R16 (TS-
TP1) = 7.5 k
Ω
(7.3 k
Ω
to 7.7 k
Ω
); and for ’74 (-003): R10 (ITERM-TP15) = 3 k
Ω
(2.98 k
Ω
to
3.02 k Ω ).
• For the bq2423xEVM, adjust the potentiometers as follows (measure resistance from TP# to VSS):
– R8 (ILIM-TP12) = 750 Ω (743 to 757); R11 (ISET-TP16) = 2.96 k Ω (2.93 k Ω to 2.99 k Ω ) and R16
(TS-TP1) = 7.5 k Ω (7.3 k Ω to 7.7 k Ω ); and for ’74 (-006): R10 (ITERM-TP15) = 3 k Ω (2.98 k Ω to
3.02 k Ω ).
Table 3. bq240xx
Jumper '72 '73 or '230 '74 or '232 '75
JMP1 RES–TMR RES–TMR RES–TMR RES–TMR
JMP2 TD–Vss TD–Vss TD–Vss TD–Vss
JMP3 CE–Vss CE–Vss CE–Vss CE–Vss
JMP4 EN2–HI EN2–HI EN2–HI EN2–HI
JMP5 EN1–Vss EN1–Vss EN1–Vss EN1–Vss