Connecting the EVM
3.3
Non-Critical Hardware Testing or Firmware Development
3.3.1
Stacking EVMs
For casual testing, one or two devices may be powered (in order from negative to positive) in lieu of
powering all 3 devices. Due to poor termination of the unpowered devices in this configuration, detailed
testing or critical hardware evaluations should not be undertaken. Any odd behavior or unexpected fault
conditions should be ignored until verified with the EVM correctly powered by three isolated supplies
4
Connecting the EVM
4.1
Connection Order
Figure 6. Bq76pl536EVM-3
(a) Configure the EVM jumpers per
(b) Connect the EVM to the Power Supplies or cells, turn on the supplies at ~12 to 24V is recommended.
The Absolute Maximum voltage per IC is 36V and should not be exceeded, 30V is the recommended
maximum continuous voltage.
(c) Connect the USB cable to the Aardvark and your PC.
(d) Connect the Aardvark ribbon cable to the 10 pin header on the EVM board
The Aardvark adapter should be connected last during power-up, and disconnected first when
powering down. If not using the wall adapter to supply power, it must be after starting the Windows
application to avoid a turn-on issue with the Aardvark adapter. Many laptop computers power off their
USB ports when they go into sleep, standby, or hibernate modes. If the device the Aardvark is
connected to remains powered when this happens, the Aardvark may suffer permanent damage.
(e) Start the WinGUI User Interface software supplied with the EVM and installed earlier
4.2
Connection Notes
The ISO-COMMS section of the EVM board isolates the EVM side voltages completely from the PC side.
It isolates all power, ground, and signal lines to the EVM. Caution must still be carefully taken when using
the EVM as part of a stack, where lethal voltages may be present. The galvanic isolation provided by the
ISO-COMMS section does not eliminate the need for safe handling procedures, proper High-Voltage
equipment and protective clothing. Proper safety procedures should always be followed.
6
bq76PL536 EVM Quick Start Guide
SLUU437B
–
October 2010
–
Revised May 2011
Copyright
©
2010
–
2011, Texas Instruments Incorporated
