Interactive Block Diagrams

Find the perfect block diagram with our step-by-step guide below. Start by choosing a solution,
then refine your selection as the next fields adapt dynamically to lead you to the final diagram.
Expanded View
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Monitor","path":"/design/interactive-block-diagrams/medical/continuous-glucose-monitor","children":[]},{"id":"f6130e35-4fd0-4719-acac-e3da45c1a9a6_IBD_DIAGRAM","parentId":"232a1fe1-c60b-4a4f-853e-7b73a7209c91_IBD_SUBSOLUTION","text":"Hearing Aid","path":"/design/interactive-block-diagrams/medical/hearing-aid","children":[]},{"id":"a3e4f792-c0dc-4153-bb76-59bbe623ed64_IBD_DIAGRAM","parentId":"232a1fe1-c60b-4a4f-853e-7b73a7209c91_IBD_SUBSOLUTION","text":"Patient Monitor","path":"/design/interactive-block-diagrams/medical/patient-monitor","children":[]},{"id":"fa0c8829-c8b8-426a-8624-fb6406550d0b_IBD_DIAGRAM","parentId":"232a1fe1-c60b-4a4f-853e-7b73a7209c91_IBD_SUBSOLUTION","text":"Ultrasound Transducer","path":"/design/interactive-block-diagrams/medical/ultrasound-transducer","children":[]}]},{"id":"d17e7410-a519-48f1-887a-1644e3a10c78_IBD_SUBSOLUTION","parentId":"9d330931-7485-49dd-ae21-990ea4e17af9_IBD_SOLUTION","text":"Medical Imaging","path":null,"children":[{"id":"7780a3f3-3fe2-4f1c-a8f4-f873ed853c45_IBD_DIAGRAM","parentId":"d17e7410-a519-48f1-887a-1644e3a10c78_IBD_SUBSOLUTION","text":"Digital Radiography","path":"/design/interactive-block-diagrams/medical/digital-radiography","children":[]}]}]}]

ICE Engine Control Unit - Block Diagram

Internal combustion engine (ICE) management deals with the ignition and combustion of the fuel which occurs within the engine itself.

"longDescription": "Detailed Description of Each Block", "blocks": [ { "name": "Vehicle Battery", "function": "Provides a 12V power supply to the system.", "theory_of_operation": "Supplies electrical energy to various components in the EV charging system.", "interaction": "Connected to the Auxiliary Power Supply block.", "category": "Third party", "connection": [ "Auxiliary Power Supply" ] }, { "name": "Auxiliary Power Supply", "sub_blocks": [ { "name": "Converter IC & LDO", "function": "Converts the input voltage to a stable output voltage required by other components.", "theory_of_operation": "Ensures that the voltage levels are within the required range for proper operation.", "interaction": "Provides stable voltage to various blocks within the power supply and protection circuit.", "category": "onsemi", "connection": [] }, { "name": "Voltage Monitoring", "function": "Monitors the voltage levels to ensure they are within specified limits.", "theory_of_operation": "Provides feedback to prevent over-voltage or under-voltage conditions.", "interaction": "Connected to the Converter IC & LDO for monitoring purposes.", "category": "onsemi", "connection": [] }, { "name": "Power Discretes", "function": "Manage power distribution and switching.", "theory_of_operation": "Consists of individual power components like transistors, diodes, and other discrete devices.", "interaction": "Works with other components in the Auxiliary Power Supply for efficient power management.", "category": "onsemi", "connection": [] }, { "name": "Protection", "function": "Includes various protection mechanisms such as over-current protection, over-voltage protection, and thermal protection.", "theory_of_operation": "Safeguards the system from various electrical anomalies.", "interaction": "Connected to the entire Auxiliary Power Supply block for comprehensive protection.", "category": "onsemi", "connection": [] } ], "connection": [ "Main Engine Control Unit" ] }, { "name": "Main Engine Control Unit", "sub_blocks": [ { "name": "Voltage References", "function": "Provides stable reference voltages for analog and digital circuits within the control unit.", "theory_of_operation": "Ensures accurate and stable operation of the control unit\u2019s circuits.", "interaction": "Integral to the operation of the Main Engine Control Unit, connected to various sub-blocks.", "category": "onsemi", "connection": [] }, { "name": "Digital Isolators", "function": "Provide electrical isolation between different parts of the system.", "theory_of_operation": "Prevent noise and interference by isolating signal paths.", "interaction": "Ensures safe and reliable operation by connecting different parts of the system while maintaining isolation.", "category": "onsemi", "connection": [] }, { "name": "ESD Protections", "function": "Protect sensitive electronics from electrostatic discharge.", "theory_of_operation": "Discharges any electrostatic buildup safely.", "interaction": "Installed at various points within the Main Engine Control Unit to protect sensitive components.", "category": "onsemi", "connection": [] }, { "name": "Controllers", "function": "Manage the overall operation of the engine control unit.", "theory_of_operation": "Use microcontrollers or processors to control engine functions.", "interaction": "Coordinates with other sub-blocks to manage engine control operations effectively.", "category": "onsemi", "connection": [] }, { "name": "Memory", "function": "Stores firmware and data required for operation.", "theory_of_operation": "Provides non-volatile storage for essential control unit data.", "interaction": "Interacts with Controllers to fetch and store operational data.", "category": "onsemi", "connection": [] }, { "name": "MCU", "function": "The central processing unit that executes control algorithms.", "theory_of_operation": "Manages communication with other blocks.", "interaction": "Central to the Main Engine Control Unit, interfaces with all other sub-blocks and external blocks.", "category": "Third Party", "connection": [] } ], "connection": [ "Injection Control Unit" ] }, { "name": "Engine Unit Sensors and Feedback", "function": "Includes various sensors that provide feedback to the main engine control unit.", "theory_of_operation": "Monitors parameters such as temperature, pressure, and engine speed.", "interaction": "Sends real-time data to the Main Engine Control Unit for processing and control.", "category": "Third party", "connection": [ "Main Engine Control Unit" ] }, { "name": "Injection Control Unit", "sub_blocks": [ { "name": "Logic Gates", "function": "Perform logical operations required for the control of the injection system.", "theory_of_operation": "Use digital logic to control injection timing and duration.", "interaction": "Connected to other sub-blocks within the Injection Control Unit.", "category": "onsemi", "connection": [] }, { "name": "Power Discretes", "function": "Manage power distribution and switching for the injection system.", "theory_of_operation": "Consist of transistors and other discrete components for controlling power flow.", "interaction": "Work in conjunction with Logic Gates and other components.", "category": "onsemi", "connection": [] }, { "name": "Comparators", "function": "Compare input signals and provide output based on the comparison.", "theory_of_operation": "Use differential signals to control injection precisely.", "interaction": "Integral part of the control loop within the Injection Control Unit.", "category": "onsemi", "connection": [] }, { "name": "Gate Drivers", "function": "Drive the gates of power transistors to control the injection process.", "theory_of_operation": "Amplify control signals to drive high-power transistors.", "interaction": "Interface between control logic and power devices.", "category": "onsemi", "connection": [] } ], "connection": [ "Relay Driver" ] }, { "name": "Relay Driver", "function": "Drives the relay that controls the solenoid.", "theory_of_operation": "Receives signals from the Main Engine Control Unit and activates the relay accordingly.", "interaction": "Acts as an intermediary between the control unit and the solenoid.", "category": "onsemi", "connection": [ "Solenoid" ] }, { "name": "Solenoid", "function": "An electromechanical device that controls the flow of fuel or air in the engine.", "theory_of_operation": "Activated by the relay driver to open or close valves.", "interaction": "Directly interfaces with the Relay Driver for actuation.", "category": "Third party", "connection": [ "High Pressure Pump" ] }, { "name": "Tank", "function": "Stores the fuel or air required for engine operation.", "theory_of_operation": "Acts as a reservoir.", "interaction": "Supplies the High Pressure Pump.", "category": "Third party", "connection": ["High Pressure Pump"] }, { "name": "High Pressure Pump", "function": "Increases the pressure of the fuel or air before it is injected into the engine.", "theory_of_operation": "Uses mechanical force to pressurize the fuel or air.", "interaction": "Connects the Tank and the Common Rail.", "category": "Third party", "connection": [ "Common Rail" ] }, { "name": "Rail Pressure Sensor", "function": "Monitors the pressure in the fuel rail.", "theory_of_operation": "Provides feedback to the Main Engine Control Unit.", "interaction": "Ensures the pressure is within optimal range.", "category": "Third party", "connection": ["Common Rail"] }, { "name": "Common Rail", "function": "Distributes high-pressure fuel or air to the injectors.", "theory_of_operation": "Acts as a manifold.", "interaction": "Connects the High Pressure Pump and Injectors.", "category": "Third party", "connection": [ "Injector" ] }, { "name": "Injector", "function": "Injects fuel or air into the engine cylinders.", "theory_of_operation": "Based on signals from the Injection Control Unit.", "interaction": "Final delivery mechanism for fuel or air.", "category": "Third party", "connection": ["Injection Control Unit"] } ], "interconnections": [ { "source": "Vehicle Battery", "target": "Auxiliary Power Supply"" }, { "source": "Auxiliary Power Supply", "target": "Main Engine Control Unit" }, { "source": "Engine Unit Sensors and Feedback", "target": "Main Engine Control Unit" }, { "source": "Main Engine Control Unit", "target": "Injection Control Unit" }, { "source": "Relay Driver", "target": "Solenoid" }, { "source": "Solenoid", "target": "High Pressure Pump" }, { "source": "Tank", "target": "High Pressure Pump" }, { "source": "High Pressure Pump", "target": "Common Rail" }, { "source": "Common Rail", "target": "Injector" } { "source": "Rail Pressure Sensor", "target": "Common Rail" } { "source": "Injector", "target": "Injection Control Unit" } ], "Last_update": "2025-07-30",

ICE Engine Control Unit

ESD Protections - Block

Products

  • ESD Protection Diodes
    • ESD9R3

      ESD Protection Diode, Ultra-Low Leakage, Low Capacitance

    • ESD1L001

      Low Capacitance ESD Protection Diodes for High Speed Data Line

    • SMS05

      ESD / Surge Protector

Technical Documentation

Evaluation Boards/Kits

FAQs

1. What functions does an ICE ECU typically control?

An ICE ECU controls fuel delivery, ignition timing, air–fuel ratio, emissions systems, and engine diagnostics. It continuously processes inputs from sensors such as crankshaft position, oxygen, and temperature sensors to maintain efficient and stable engine operation.

2. What role do sensors play in engine control units?

Sensors provide real-time measurements of engine and environmental conditions needed for precise control decisions. Inputs such as pressure, temperature, position, and oxygen concentration enable the ECU to adjust combustion parameters for efficiency, performance, and emissions compliance.

3. How does an ICE ECU support emissions reduction?

An ICE ECU supports emissions reduction by precisely controlling combustion and aftertreatment systems. Accurate sensing, fast processing, and closed-loop control help meet global emissions standards by minimizing unburned fuel, NOx formation, and particulate output.

4. How does functional safety apply to ICE ECU systems?

Functional safety ensures that the ICE ECU detects faults and transitions to safe states when failures occur. Safety mechanisms such as watchdogs, redundant sensing, and diagnostics support compliance with standards like ISO 26262 for engine control applications.

5. How does the onsemi Interactive Block Diagram help me select parts and build a worksheet/BOM?

The onsemi interactive block diagram lets you select a taxonomy, choose devices per block, and download a worksheet. If you need a deeper dive into the tool, watch our tutorial video.

Worksheet (BOM) Preview

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