Quick Start Procedure - Linear ADI Power DC3080A-KIT Demo Manual

QUICK START PROCEDURE

Refer to Figure 9 and Figure 11 for the proper measure-
ment equipment setup and follow the procedure below:
1. Connect a voltage source PS1 and a 50Ω resistor RBAT1
between the BAT and GND turrets of the DC3078A as
shown in Figure 9. PS1 and RBAT1 make up the battery
emulator. Typical power supply cannot sink current. By
adding a resistor across the power supply inputs that
draws more current than the maximum battery charge
current, the power supply only sources current at all
time. Connect a voltmeter VM1 to measure the BAT pin
to GND voltage. Connect an ammeter AM1 to measure
the charge current to the battery emulator.
2. Connect a voltage source PS2 between the VIN and
GND turrets of the DC3081A, as shown in Figure 10.
3. Set PS1 to 2.5V, and power up PS1. Set PS2 to 5V, and
power up PS2. The LED indicator on DC3078A receiver
board should start blinking slowly, indicating power is
delivered to the receiver. AM1 should read around 1mA
trickle charge current.
4. Slowly increase PS1 until VM1 reads 3.6V. The charge
current should jump up to 10mA. Further increase PS1
voltage slowly, until VM1 reads 4.2V. The charge cur-
rent should drop to zero.
5. Connect an electronic load LD1 and a voltmeter between
OUT and GND pin. If EN jumper is at ON position, VM2
should read 1.2V. If not, OUT can be turned on/off by
the pushbutton.
DEMO MANUAL DC3080A-KIT
6. When OUT is on, set LD1 to CC mode. Slowly tune up
the load current to 40mA. VM2 should be regulated at
around 1.2V
7. Turn off LD1, PS2 and PS1.
8. To test DC3079A, 6mm application-sized demo, please
remove the DC3078A away from DC3081A. Place
DC3079A on top of the DC3081A transmitter coil LTx1.
9. Turn on PS1. The LED on DC3079A should start blink-
ing slowly, indicating power is delivered to the receiver.
11
10
9
8
7
6
5
4
3
2
1
0
0 40 80 120 160 200 240 280 320 360 400
Figure 8. DC3078A and DC3081A Wireless Charging Profile with
19mAh Li-Ion Battery
4.3
4.2
4.1
4.0
3.9
3.8
3.7
3.6
V
BATT
I
CHRG
3.5
3.4
3.3
TIME (MINS)
Rev. 0
3