Eval » Historie » Version 10
Maximilian Seesslen, 06.10.2025 14:04
| 1 | 1 | Maximilian Seesslen | h1. Eval |
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| 2 | |||
| 3 | 8 | Maximilian Seesslen | h2. New Features compared to Mainswitch/CANSwitch |
| 4 | 1 | Maximilian Seesslen | |
| 5 | * More current |
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| 6 | * Fix Wakeup |
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| 7 | 6 | Maximilian Seesslen | ** Beim Mainswitch gab der Power-button einen Stromimpuls auf den ACQxxx und auf einen GPIO. Wenn das system von extern gespest wurde und die MCU schlafen war, konnte sie nicht wieder aufgewekt werden. |
| 8 | 1 | Maximilian Seesslen | * Periodic wakeups to make measurements: RTC |
| 9 | 8 | Maximilian Seesslen | ** RTC_OUT gibt spannung auf den ENABLE des |
| 10 | 1 | Maximilian Seesslen | * Diode ? Voltage-Drop issue |
| 11 | ** Ideal diode with Mosfet |
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| 12 | * High voltage (24V) ? |
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| 13 | ** Different connectors |
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| 14 | * Global Timeserver; It already has batteries |
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| 15 | * Real touch keys |
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| 16 | * Over-Temperature power off (PCB/Box) |
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| 17 | * Buzzer? |
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| 18 | ** indicate peridoc on/off during day time |
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| 19 | 8 | Maximilian Seesslen | * External Solid State Relais for high power switching like Horo |
| 20 | 1 | Maximilian Seesslen | |
| 21 | * 4 Sectionen: SZ, WZ, MEMS, ? |
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| 22 | ** Stoeren ungepowerte Platinen CAN? |
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| 23 | 2 | Maximilian Seesslen | ** Erzwingt Sternkonstelation |
| 24 | 1 | Maximilian Seesslen | |
| 25 | h2. Components |
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| 26 | |||
| 27 | Ideal Diode: |
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| 28 | |||
| 29 | * VN7140ASTR; up to 0,280 ohm, 0,120 Ohm typical |
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| 30 | * LTC4412; 2,9V; TME 2.60EUro; External P-MOSFET needed; Waere perfekt gewesen; load sharing |
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| 31 | * TPS2410 N.A. |
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| 32 | * LM5050 |
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| 33 | * MAX40200; 1A only, no external MOSFET |
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| 34 | 8 | Maximilian Seesslen | * LM74700; 1.27€; perfekt; load sharing |
| 35 | 1 | Maximilian Seesslen | |
| 36 | 4 | Maximilian Seesslen | --LTC4412 is the only available-- |
| 37 | 1 | Maximilian Seesslen | |
| 38 | TMP1075; TMP1075NDRLR; 0,31€ |
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| 39 | Muesste noch viel rumliegen haben |
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| 40 | 4 | Maximilian Seesslen | |
| 41 | 1 | Maximilian Seesslen | |
| 42 | h2. Calculations |
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| 43 | |||
| 44 | * 240V/600mA eigentlich ausreichend; 144W |
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| 45 | * AQH3213A |
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| 46 | * STM32F030K6T6 should draw 20µA in stop |
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| 47 | * 700mAh=700000µAh |
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| 48 | * 700000µAh/20µA=3500h=1458d=ca 4 years |
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| 49 | |||
| 50 | h2. MCU |
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| 51 | |||
| 52 | * "Find":https://www.tme.eu/de/katalog/st-mikrocontroller_112866/?params=375:1453589,1453450,1853043,1634756,1634761,1938598,1473784,1613924;3461:1979124,1979125 |
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| 53 | * STM32F072C8T6 |
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| 54 | ** 2V, ok, Entladeaschlussspannung |
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| 55 | ** Nur LQFP48; 4.53Euro |
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| 56 | ** 1,85 € Reichelt STM32F072CBT6 128KB Flash |
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| 57 | 7 | Maximilian Seesslen | ** RTC_OUT out PC13 |
| 58 | 1 | Maximilian Seesslen | * STM32H503CBT6, "STM32H503KBU6":https://www.tme.eu/Document/e92fcde7cdebb20ebbd5639f57dc7863/stm32h503cb.pdf |
| 59 | ** 3.20Euro |
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| 60 | * Fuer VBAT wird beim STM32H503KBU6 auch FQFP48 benoetigt. |
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| 61 | 8 | Maximilian Seesslen | |
| 62 | h2. Number of LED drivers |
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| 63 | 7 | Maximilian Seesslen | |
| 64 | 10 | Maximilian Seesslen | Living room has 6 lamps. |
| 65 | |||
| 66 | 1 | Maximilian Seesslen | |
| 67 | h2. Issues |
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| 68 | |||
| 69 | h3. Wie Straenge schalten |
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| 70 | |||
| 71 | * 4 x LTC4412 umstaendlich, E.g. status ruecklesen |
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| 72 | * Jeweils 2 Mosfets notwendig um zu isolieren, klein + gross |
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| 73 | 5 | Maximilian Seesslen | * Wozu Stränge? 2 direkt verbundene Buchsen reichen nicht? Auch nur um sich ntfalls verteiler zu sparen. |