DRSSTC-Fiber-Optic-Interrupter
Alberto0235
Custom 4-layer interrupter control board for DRSSTC systems. STM32F405-based, fiber-optically isolated outputs, hardware E-brake safety chain, and controlled-impedance routing (90Ω USB, 50Ω FSMC/SDIO). Designed in KiCad 9.0.
Components (15)
| Reference | Value | Description |
|---|---|---|
| Q3 | PMV250EPEAR | P-MOSFET transistor, drain/source/gate |
| Q4-Q6 | PMV240ENEAR | N-MOSFET transistor, drain/source/gate |
| U6,U7 | HFBR-1412TZ | BROADCOM - HFBR-1412TZ - Fiber Optic Transmitter, Miniature Link, ST Port, 820 nm, 5 Mbaud, 1500 m, 100 mA, 1.84 V, 3.8 V |
| C53,C55-C58 | 100n | Unpolarized capacitor |
| C54 | 4.7u | Unpolarized capacitor |
| D5,D7,D9 | LED | Light emitting diode |
| D6,D8 | IF-E97 | |
| R68,R73 | 27 | Resistor |
| R69,R70,R74,R75 | 47 | Resistor |
| R71,R77 | 220 | Resistor |
| R72,R78 | 100k | Resistor |
| R76 | 10k | Resistor |
| R79 | 100 | Resistor |
| SW9 | Push SPDT | Momentary Switch, single pole double throw |
| TP7-TP14 | TestPoint | test point |