PDM Inteligente Automotriz

Created 4 project docs

Block Diagram

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Block Diagram Arquitectura Interfaces
  • Potencia: BAT+, GND, OUT1…OUT5.
  • Control: PWM1…PWM5, ADC_I1…ADC_I5, ISO_IN1…ISO_IN5, SW1…SW5, DS18B20_DATA.
  • Los PC814 se usan solo para eventos lentos; el PWM de 20 kHz va directo a drivers high-side.
Plan de bloques / referencias
  • Protección y distribución 12 V: buscar referencia; adaptar a load-dump automotriz.
  • Buck 12 V→5 V y 5 V→3.3 V: buscar referencias automotrices; importar solo si hay bloque independiente compatible.
  • ESP32-S3 + USB/boot/reset: buscar referencia ESP32-S3.
  • Cinco canales high-side 40 A: sin referencia si no existe bloque de potencia comparable; diseño desde datasheets.
  • Entradas PC814, interruptores y DS18B20: diseño desde biblioteca/datasheets.

Project Specification

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Project Specification Project Overview
PDM automotriz inteligente de 12 V, estado Draft, con cinco salidas high-side independientes de 40 A continuos controladas por ESP32-S3.
Intended Use
Prototipo de distribución de potencia para vehículo de 12 V y cargas resistivas/inductivas. Requiere validación térmica, EMC, ISO 7637-2 y mecánica antes de uso en vehículo.
What the Device Should Do
  • Conmutar cinco cargas high-side hasta 40 A continuos por canal.
  • PWM objetivo 20 kHz y 100% duty.
  • Medir corriente bidireccional por canal y apagar por sobrecorriente.
  • Leer cinco entradas aisladas universales, cinco interruptores manuales y un DS18B20.
  • Arrancar siempre con salidas OFF.
Main Features
  • ESP32-S3-WROOM-1, USB nativo, BOOT/RESET.

Power Budget and Design Notes

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Power Budget and Design Notes Presupuesto preliminar de lógica
Objetivo buck 5 V: mínimo 2 A para margen de temperatura/transitorios. El regulador 3.3 V debe soportar ≥1 A; si es LDO desde 5 V, disipación típica límite ≈(5−3.3)×0.65=1.105 W, por lo que se prefiere buck 3.3 V o LDO de paquete térmico grande con cobre y verificación.
Potencia de canales
Cada canal de 40 A requiere cálculo con RDS(on) caliente. Dos MOSFET en paralelo de 2.5 mΩ cada uno a temperatura elevada equivalen a 1.25 mΩ y disipan P≈I²R=2.0 W por canal solo en conducción, sin incluir conmutación. La selección final debe usar RDS(on) a Tj y Qg del datasheet; se requieren cobre pesado, vías térmicas y/o disipador/busbar.
Protección

Firmware Starter

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Firmware Starter
Se completará después de fijar las asignaciones GPIO reales del esquema. Objetivo: PlatformIO + Arduino, PWM LEDC 20 kHz, adquisición de cinco corrientes, entradas aisladas/manuales, DS18B20, OFF seguro al arranque y latch de sobrecorriente.

flux

La arquitectura principal ya está creada y usa sensores Hall de 50 A y MOSFETs de 100 V en paralelo por canal. La revisión encontró soporte incompleto en los drivers high-side y varios ERC reales; voy a corregir esos bloques antes de considerar terminado el esquema.

flux

Se creó el esquema base del PDM Inteligente ESP32-S3 con cinco canales high-side PWM, MOSFETs de 100 V en paralelo, sensores Hall ACS770 de 50 A, fusibles independientes, entradas PC814, conector de interruptores, DS18B20, alimentación protegida y firmware inicial.
Pendiente
  • Completar los circuitos auxiliares de los cinco TPS48100-Q1 y resolver los ERC restantes.
  • Validar o sustituir la base de fusible candidata por una referencia certificada para 40 A continuos.
  • Realizar validación térmica y mecánica para hasta 200 A simultáneos antes del layout.
No pude ejecutar la pasada final porque ya no hay ACUs disponibles. El diseño no debe pasar todavía a PCB ni fabricación.
Corregir drivers y ERC
Buscar portafusible 40 A
Validar 200 A térmicos
  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
    jharwinbarrozo
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  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Resistor
    Generic Resistor
    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • RMCF0805JT47K0
    RMCF0805JT47K0
    General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
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    1.2M
  • 875105359001
    875105359001
    10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan
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  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
    jharwinbarrozo
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  • 1070TR
    1070TR
    Battery Holder (Open) Coin, 20.0mm 1 Cell SMD (SMT) Tab bate or batt #forLedBlink
    jharwinbarrozo
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  • Push Button
    Push Button
    A momentary or non-latching switch which causes a temporary change in the state of an electrical circuit only while the switch is physically actuated. SWITCH TACTILE SPST-NO 0.05A 24V
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  • T491D226K025AT
    T491D226K025AT
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PDM Inteligente ESP32-S3

PDM Inteligente ESP32-S3 thumbnail
PDM automotriz inteligente de 12 V con ESP32-S3, cinco salidas high-side de 40 A, entradas aisladas, sensado Hall, protección automotriz y firmware PlatformIO/Arduino.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor

Qty 1

Arrow

$85.28–$105.06

Digi-Key

$9.78

HQonline

$15.00–$15.09

LCSC

$161.86–$178.12

Mouser

$168.52

TME

$7.50

Verical

$133.02–$216.05

Controls