LTC3305EFE Datasheet, PDF (4/8 Pages) Linear Technology – Lead Acid Battery Balancer

DEMO MANUAL DC2043A
QUICK START PROCEDURE
Using short twisted pair leads for any power connections,
with all loads and power supplies off, refer to Figure 5 for
the proper measurement and equipment setup.
Follow the procedure below:
1. Before connecting PS1-PS5 to the DC2043A, the
power supplies must have its current limit set to 5A .
For most power supplies with a current limit adjust-
ment feature the procedure to set the current limit is
as follows. Turn the voltage and current adjustment
to minimum. Short the outputs terminals and turn the
voltage adjustment to maximum. Adjust the current
limit to 5A for PS1. Turn the voltage adjustment to
minimum and remove the short between the output
terminals. Repeat for PS2-PS5 The power supplies
are now current limited to 5A .
a. Initial Jumper and PS settings:
JP1(MODE) = CONT JP2 (EN) = SD
JP3(TERM1) = 1 JP4 (TERM2) = 1
PS1 = Off PS2 = Off PS3 = OFF
PS4 = OFF PS5 = Off PS6 = Off
2. Connect power supplies, load resistors and meters as
shown in Figure 5. Turn on PS1 and slowly increase
voltage to 2.0V while monitoring the input current. If
the current remains less than 200mA, increase PS1
to 12.0V. Repeat for PS2-PS4.
3. Turn on PS5 and slowly increase voltage to 2.0V while
monitoring the input current. If the current remains less
than 200mA, increase PS5 to 11.8V. Turn on PS6 and
slowly increase voltage to 2.0V while monitoring the
input current. If the current remains less than 20mA,
increase PS6 to 5.0V.
4. Measure the voltage from the VREG Turret to ground.
The voltage should read approximately 2.6V. Measure
the voltage from the BOOST Test Point to V4. The volt-
age should read approximately 0V. No LED should be
on.
5. Set JP2 to EN. Measure the voltage from the BOOST
Test Point to V4. The voltage should read approximately
8.5V.
6. Measure the voltage from the I_SET Test Point to ground.
The voltage should read approximately 1.2V.
7. Measure the voltage from the VH Test Point to ground.
The voltage should read approximately 1.52V.
8. Measure the voltage from the VL Test Point to ground.
The voltage should read approximately 0.95V.
9. With JP1 set to CONT, JP2 set to EN, JP3 set to 1 and
JP4 set to 1, observe that the BATX and BATY LEDs
are cycling through their four states.
BATX
BATY
Active
LED
LED
Battery
OFF
OFF
BAT1
OFF
ON
BAT2
ON
ON
BAT3
ON
OFF
BAT4
10. Decrease PS1 and PS5 to 9.4V and observe that while
the BATX and BATY are off, the UVFLT LED is on.
11. Increase PS1 and PS5 to 15.9V and observe that
while the BATX and BATY are off, the OVFLT LED is
on. Decrease PS1and PS2 to 12.0V.
12. Decrease PS2 to 11.5V. Set JP1 to TIMER. Observe
that the BATX LED is off and BATY LED is on the ma-
jority of the time .Increase PS2 to 12V and observe
that the balancing action stops. The BAL LED will be
off and the DONE LED will be on.
13. Set JP1 to CONT and JP2 to SD. Set PS5 to 11.8V.
Observe that balancing action has stopped and no
LEDs are on. Set JP2 to EN and observe that balancing
action starts.
14. Turn off all power supplies
dc2043af
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