Enable pin test
Current sense test
The new BTS load switch comes with built in current sense, to measure the output of said current sense the load switch output channel must be enabled. There are 2 ways to enable loadswitch output channel, 1.) solder jumper wire from 3v3 to enable pin or 2.) use firmware to enable desired load switch. Once either of the method are employed connect the board with power supply and e-load, once ready power the board using 13V~14.5V and turn on the e-load. In the board schematic there is an 1.21 kΩ resistor, measure the voltage drop across that and record it with the current draw.
RL = 1.21KΩ
BTS7200-2EPA
| Current (IL) [A] | IS Voltage (VIS ) [V] | IS Current (IIS) [A] |
|---|---|---|
| 0.5 | 0.9062 | 0.000749 |
| 0.6 | 1.084 | 0.000896 |
| 0.7 | 1.2619 | 0.001043 |
| 0.8 | 1.4398 | 0.00119 |
| 0.9 | 1.6278 | 0.001345 |
| 1 | 1.7971 | 0.001485 |
| 1.1 | 1.9752 | 0.001632 |
| 1.2 | 2.1532 | 0.00178 |
| 1.3 | 2.3311 | 0.001927 |
| 1.4 | 2.5095 | 0.002074 |
| 1.5 | 2.6878 | 0.002221 |
| 1.6 | 2.866 | 0.002369 |
| 1.7 | 3.0442 | 0.002516 |
| 1.8 | 3.2226 | 0.002663 |
| 1.9 | 3.4019 | 0.002811 |
| 2 | 3.5805 | 0.002959 |
| 2.1 | 3.7588 | 0.003106 |
| 2.2 | 3.9371 | 0.003254 |
| 2.3 | 4.1158 | 0.003401 |
| 2.4 | 4.2948 | 0.003549 |
| 2.5 | 4.4726 | 0.003696 |
| 2.6 | 4.6459 | 0.00384 |
| 2.7 | 4.8126 | 0.003977 |
| 2.8 | 4.9773 | 0.004113 |
| 2.9 | 5.1397 | 0.004248 |
| 3 | 5.3012 | 0.004381 |
Datasheet KILIS = 670
Experiment KILIS = 683.33
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