Datasheet

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G002
Power
Supply#1
bqHYBRID
EVM
BAT+
(J4)
BAT–
R
36
0.25W
L
W
SYS
(J3)
AC
(J1)
EN
B0235-04
Oscilloscope
PROCEDURE
Figure 2-5. Waveform at Pin SW
11. Converter Enable and Disable. Disconnect the current meter, the 5- , 50-W resistor, and power
supply #2 from J4. Short J6 pin 1 (EN) and pin 2 (DC–). Verify the voltage of SYS (J3) is below 100
mV.
12. No Battery Load With DC-DC Converter Disabled, Switch From Charge to Charge Done to
Recharge, Back and Forth. Make sure the setup has been changed to setup D, as shown in
Figure 2-6 . Verify that the LEDs, D3 and D2, alternate being lit. Measure the voltage at BAT+ with the
oscilloscope. Verify the waveform is like that in Figure 2-7 . It is actually
Figure 2-6. Test Setup D
10 Basic Functions Evaluation SLUU214A December 2004 Revised June 2007
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