Difference between revisions of "E-fuse beta1 manual"
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E-fuse is to provide a electronic power switch with overcurrent protection and anti-sparking function. | E-fuse is to provide a electronic power switch with overcurrent protection and anti-sparking function. | ||
The physical fuse is simple and reliable, but reacts too slow. For example, out 120A fuse, when current is 240A, it will take 1 minute to blow, this is some times too late | The physical fuse is simple and reliable, but reacts too slow. For example, out 120A fuse, when current is 240A, it will take 1 minute to blow, this is some times too late, usually unrecoverable, and lack of flexibility. | ||
= Feature = | = Feature = | ||
Revision as of 18:21, 31 December 2022
E-fuse is to provide a electronic power switch with overcurrent protection and anti-sparking function.
The physical fuse is simple and reliable, but reacts too slow. For example, out 120A fuse, when current is 240A, it will take 1 minute to blow, this is some times too late, usually unrecoverable, and lack of flexibility.
Feature
- 3OZ Aluminum substrate power stage with stacked logic board.
- High side N-MOSFETS, 100V 300A x 3.
- Low side shunts for current sample, 0.5mΩ x 5.
- 15A, 30A, 60A, 120A, 180A, 240A, 300A configurable protecting current, beyond 120A is yet testing.
- 80V max battery voltage, with 20V MOSFETS margin, 100V can be achieved by change the MOSFETS.
- Anti-spark.
- Power switch, support momentary/latching button and ignite key, independent from MOSFETS control logic.
- Roll to power on, can be set off by a switch.
- Auto power off after 20 minutes, when ESC is idle, also can be set off by a switch.
- Less than 100uA shut off current.
- Size:
Ports and wiring
The button and ignite
E-Fuse support three types power on inputs: momentary button, latching button, and ignite key.
If ignite key trigged to power on, E-fuse recognizes it as ignite key mode.
If no ignite key hasn't been trigged, E-fuse go to check if the button is been pressed, if pressed then released within 1 second, E-fuse recognizes it as momentary button mode.
If button been pressed more than 2 seconds, E-fuse recognizes it as latching button mode.
Power off E-fuse with momentary button mode by press the button more than 2 seconds.
Power off E-fuse with latching button or ignite key by release the button or the ignite key.
When using ignite key mode, please set "Roll to power on" to off, to prevent unexpected power on, when you intend to power off E-fuse.
The protecting current setting
With a momentary button, we can set the protecting current by click the button continuously then wait 1 second.
The button LED will then blink to indicate the setting.
The button LED also blinking after power on to indicate the previous setting.
| click times | set protecting current | blink times |
|---|---|---|
| 3 | 15A | 1 |
| 4 | 30A | 2 |
| 5 | 60A | 3 |
| 6 | 120A | 4 |
| 7 | 180A | 5 |
| 8 | 240A | 6 |
| 9 | 300A | 7 |
| Current rating | shut off time |
|---|---|
| detected current< 1 x setting current | never |
| 1 x setting current <= detected current < 2 x setting current | 60 seconds |
| 2 x setting current <= detected current < 3 x setting current | 15 seconds |
| 3 x setting current <= detected current | 0.1 second |
