A number of jumpers are available on the BC100, to be able to configure it for the desired use. Refer to Table Table 1 for a list of jumper and use, and refer to Figure 1 to identify the jumper's location.
| Designator | Use and settings |
|---|---|
| J302 | Selects if the PB1 pin on ATtinyx5 is connected to the ISP/dW header or if it is connected to the buck converters. Use "PROG" position (left on Figure 4-2) when programming the ATtinyx5. Use "CHARGE" position when the ATtinyx5 should be connected to a buck burst converter. |
| J400/401 | Select which buck converter the supply voltage is connected to use. Two jumpers should be mounted in side by side at the label "BUCK-A" (40V/5A), "BUCK-B" (30V/2.5A) or "BUCK-C" (20V/1A). "BUCK-A" is the rightmost jumper pair on Figure 1 |
| J402 | Selects if the buck PWM control signal is connected or disconnected from the BUCK-A (40V/5A). This jumper should be mounted in the disable position while J403 or J404 is mounted in the enable position. |
| J403 | Selects if the buck PWM control signal is connected or disconnected from the BUCK-B (30V/2.5A). This jumper should be mounted in the disable position while J402 or J404 is mounted in the enable position. |
| J404 | Selects if the buck PWM control signal is connected or disconnected from the BUCK-C (20V/1A). This jumper should be mounted in the disable position while J402 or J403 is mounted in the enable position. |
| J405 | Selects the resistor divider network setting for the ADC input from the V_BAT+ voltage (positive ADC input from shunt resistor). The divider can be set to 1/2, 1/4, 1/8, 1/12, and 1/16 V_BAT+. Note that the setting used should match the setting on J406. |
| J406 | Selects the resistor divider network setting for the ADC input from the V_BAT- voltage (negative ADC input from shunt resistor). The divider can be set to 1/2, 1/4, 1/8, 1/12, and 1/16 V_BAT-. Note that the setting used should match the setting on J405. |
| J407/408 | Connects the either "BUCK-A", "BUCK-B" or "BUCK-C" converter output to the battery terminals (through shunt resistor network). The jumpers should be mounted in pairs due to potentially high currents. Never place the jumpers so that the output from the different buck converters are shorted, this may damage the buck converters. |
Figure 1. Location of
jumpers on the BC100.
