| Commit message (Collapse) | Author | Age | |
|---|---|---|---|
| * | Fix up symbolsHEADv1.1master | David Phillips | 2020-01-02 |
| | | |||
| * | Bump to Version 1.1 | David Phillips | 2020-01-02 |
| | | |||
| * | Increase UVLO turn-on to 43 V | David Phillips | 2020-01-02 |
| | | | | | | | | | | | | The initial design assumed that the UVLO was a feature of the LM3409 not needed by this board. It was set at the datasheet values of 10.1 V turn-on with 1.1 V of hysteresis. However, during testing, I have found that the supply will sink a maximum of around 600 mA into the load when operated into dropout. The LM3409 datasheet confirms that this is expected behaviour. Since the supply is designed for LEDs modules with a forward voltage of 37 V, this patch changes the UVLO to just over 43 volts, meaning that we do not run the LEDs above the supply's design current of 450 mA. | ||
| * | Add PWR_FLAGs to power input | David Phillips | 2019-05-31 |
| | | | | | This quells warnings about connected-but-not-driven nets for GND and VCC | ||
| * | Rescue symbols, minor revisions to PCBv1 | David Phillips | 2019-05-31 |
| | | | | | | This commits previous work that took place sporadically between the last commit a year and a half ago, and now. | ||
| * | Add PCB prototype, schematic, gitignore | David Phillips | 2017-09-10 |
 |
index : led-driver | |
| 450 mA, 17 W LED Driver based around the LM3409(HV) | David Phillips |
| aboutsummaryrefslogtreecommitdiff |
path: root/led-driver.sch