交互式框图

Industrial Welding - 框图

Industrial welding machines are essential for automated, precise, and efficient welding processes in manufacturing and construction industries.

"blocks": [ { "name": "AC Input", "function": "Provides the primary AC mains power source for the welding system.", "theory_of_operation": "Supplies alternating current from an external power grid, which is then routed to rectification and power-factor-correction stages to generate a stable DC bus.", "interaction": "Feeds raw AC voltage into the Rectifier and PFC circuitry.", "category": "Third party", "connection": ["Rectifier and PFC"], "sub_blocks": [] }, { "name": "Rectifier and PFC", "function": "Converts AC line voltage to a regulated high-voltage DC bus and maintains high power factor.", "theory_of_operation": "Uses a diode bridge for AC–DC conversion and an active PFC stage composed of switching MOSFETs, inductors, and controllers to shape input current for low harmonic distortion and compliance with regulatory standards.", "interaction": "Supplies regulated high-voltage DC to the Gate Driver, Main Controller, and Inverter blocks.", "category": "onsemi", "connection": [ "Gate Driver", "Inverter" ], "sub_blocks": [] }, { "name": "Gate Driver", "function": "Provides high-current, high-speed switching signals that control the MOSFETs/IGBTs inside the inverter stage.", "theory_of_operation": "Implements level shifting, isolation, and high peak drive currents using dedicated gate-driver ICs to ensure efficient and synchronized switching of the power devices.", "interaction": "Receives DC power and control signals from the Main Controller and delivers timed gate pulses to the Full Bridge inverter stage.", "category": "onsemi", "connection": ["Inverter"], "sub_blocks": [] }, { "name": "Main Controller", "function": "Serves as the central digital control subsystem responsible for welding-mode management, closed-loop regulation, thermal monitoring, wire feed coordination, and system safety.", "theory_of_operation": "Runs embedded firmware on a microcontroller and communicates across digital interfaces. Processes sensor feedback, manages PWM timing, supervises fan and solenoid activation, and ensures stable arc control.", "interaction": "Exchanges control signals with the Gate Driver and Communication interface.", "connection": [ "Communication", "Gate Driver" ], "sub_blocks": [ { "name": "Memory", "function": "Stores firmware, configuration parameters, and logging data.", "theory_of_operation": "Uses non-volatile memory such as flash or EEPROM to retain instructions and calibration constants.", "interaction": "Provides program and parameter data to the main CPU core.", "category": "onsemi", "connection": [] }, { "name": "ESD Protection", "function": "Protects digital pins and communications lines against electro-static discharge.", "theory_of_operation": "Utilizes diodes and suppression structures to clamp voltage spikes and shunt harmful currents.", "interaction": "Prevents damage to the controller’s I/O interfaces.", "category": "onsemi", "connection": [] }, { "name": "Level Translator", "function": "Converts digital logic levels between subsystems operating at different voltages.", "theory_of_operation": "Implements bidirectional level shifting using MOSFET-based or buffer-based translation circuits.", "interaction": "Ensures signal integrity between MCU, communication ports, and peripheral ICs.", "category": "onsemi", "connection": [] }, { "name": "Standard Logic", "function": "Provides glue-logic functions such as buffering, inversion, and gating of signals.", "theory_of_operation": "Uses CMOS logic gates to condition digital timing, enable lines, and safety interlocks.", "interaction": "Supports timing control and signal routing inside the controller.", "category": "onsemi", "connection": [] }, { "name": "Solenoid/Relay Driver", "function": "Drives inductive loads such as gas-valve solenoids and control relays.", "theory_of_operation": "Uses protected low-side/high-side switches with integrated current limiting, flyback diodes, and thermal protection.", "interaction": "Activates external solenoids under MCU supervision.", "category": "onsemi", "connection": [] }, { "name": "Clock", "function": "Provides a stable timing reference for the MCU and digital subsystems.", "theory_of_operation": "Crystal or MEMS oscillator generates a precise frequency reference for deterministic control loops.", "interaction": "Synchronizes firmware timing, ADC sampling, and communication protocols.", "category": "onsemi", "connection": [] }, { "name": "MCU", "function": "Central processing unit for control and communication.", "theory_of_operation": "Executes firmware to manage system operations.", "interaction": "Interfaces with otherr blocks.", "category": "Third party", "connection": [] } ] }, { "name": "Communication", "function": "Provides external connectivity for diagnostics, updates, interfacing with automation systems, and control consoles.", "theory_of_operation": "Implements physical-layer transceivers and protocol controllers for industrial interfaces such as Ethernet, CAN, and FlexRay.", "interaction": "Transfers configuration data and telemetry between the Main Controller and external equipment.", "category": "onsemi", "connection": ["Main Controller", "Wire Feeder"], "sub_blocks": [ { "name": "Ethernet", "function": "Enables high-speed wired communication.", "theory_of_operation": "Uses PHY and MAC layer implementations to transmit differential data over twisted-pair cables.", "interaction": "Links the welder to diagnostic tools or factory networks.", "category": "onsemi", "connection": [] }, { "name": "CAN", "function": "Provides real-time messaging for industrial control.", "theory_of_operation": "Implements differential signaling with arbitration and error detection for robust communication.", "interaction": "Exchanges control/status frames with supervisory systems.", "category": "onsemi", "connection": [] }, { "name": "FlexRay", "function": "Supports deterministic high-bandwidth communication suitable for safety-critical systems.", "theory_of_operation": "Uses time-triggered communication cycles for synchronized data exchange.", "interaction": "Provides reliable timing-critical data transfer for welding automation.", "category": "onsemi", "connection": [] }, { "name": "ESD Protection", "function": "Safeguards communication interfaces from electrostatic discharge.", "theory_of_operation": "Uses TVS diodes and clamping structures to absorb high-energy transients.", "interaction": "Ensures reliable communication during ESD events.", "category": "onsemi", "connection": [] } ] }, { "name": "Inverter", "function": "Converts high-voltage DC into a controlled welding current that powers the arc.", "theory_of_operation": "A high-frequency switching full-bridge produces an AC waveform that is rectified by the secondary stage to produce a stable welding output voltage and current.", "interaction": "Receives switching commands from the Gate Driver and delivers welding energy to the torch.", "connection": ["Gas Solenoid Valve"], "sub_blocks": [ { "name": "Full Bridge", "function": "Switches the DC bus at high frequency to generate a square wave AC waveform.", "theory_of_operation": "Uses MOSFET or IGBT devices controlled via gate drivers to perform alternating switching cycles.", "interaction": "Feeds the transformer and secondary rectification stage.", "category": "onsemi", "connection": [] }, { "name": "Secondary Rectifier", "function": "Converts the high-frequency AC output of the inverter transformer to DC for welding.", "theory_of_operation": "Uses fast-recovery diodes or synchronous rectifiers to minimize switching losses.", "interaction": "Provides regulated DC current to the welding torch.", "category": "onsemi", "connection": [] } ] }, { "name": "Gas Solenoid Valve", "function": "Controls the flow of shielding gas to the welding torch.", "theory_of_operation": "A solenoid actuates a valve mechanism when energized; a DC/DC supply conditions power for the magnetic actuator.", "interaction": "Receives enabling signals from the Main Controller and regulates gas delivery to the torch.", "connection": ["Welding Torch"], "sub_blocks": [ { "name": "Switch", "function": "Provides electrical activation control for the solenoid coil.", "theory_of_operation": "Acts as an electronically controlled gate that energizes the magnetic actuator.", "interaction": "Operated by the solenoid driver in the controller.", "category": "onsemi", "connection": [] }, { "name": "Solenoid", "function": "Creates the magnetic force required to actuate the valve mechanism.", "theory_of_operation": "Uses a wound coil to generate electromagnetic force proportional to current.", "interaction": "Opens or closes the valve when energized.", "category": "Third party", "connection": [] }, { "name": "Gas Cylinder", "function": "Provides the supply of shielding gas used in welding.", "theory_of_operation": "Contains pressurized inert or semi-inert gas routed through the valve to the torch.", "interaction": "Feeds gas to the solenoid valve assembly.", "category": "Third party", "connection": [] }, { "name": "DC/DC Converter", "function": "Provides stable low-voltage power for the solenoid actuator.", "theory_of_operation": "Converts high-voltage DC into a regulated lower voltage optimized for inductive loads.", "interaction": "Supplies conditioned power to the solenoid coil.", "category": "onsemi", "connection": [] } ] }, { "name": "Auxiliary Power Supply", "function": "Generates isolated and regulated low-voltage rails for control logic, sensors, drivers, and communication subsystems.", "theory_of_operation": "Uses switching regulators, MOSFET stages, LDOs, and protection elements to derive multiple power rails from the main DC bus.", "interaction": "Provides operating power to the Main Controller, Fan Control, and Wire Feeder.", "connection": [ "Fan Control", "Wire Feeder", "Main Controller", "Gate Driver" ], "sub_blocks": [ { "name": "Diode", "function": "Provides polarity protection or rectification within auxiliary circuits.", "theory_of_operation": "Uses PN junction behavior to allow unidirectional conduction.", "interaction": "Ensures safe operation during power transients.", "category": "onsemi", "connection": [] }, { "name": "MOSFET", "function": "Acts as a switching or regulation element in DC/DC converters.", "theory_of_operation": "Uses field-effect transistor operation to modulate output voltage and current.", "interaction": "Supports efficient power conversion and load control.", "category": "onsemi", "connection": [] }, { "name": "Circuit Protection", "function": "Prevents over-current, over-voltage, and short-circuit damage.", "theory_of_operation": "Incorporates fuses, surge suppressors, or current-limit ICs to detect abnormal energy conditions.", "interaction": "Safeguards downstream regulators and controllers.", "category": "onsemi", "connection": [] }, { "name": "DC/DC Converter", "function": "Steps down DC voltage to regulated low-voltage rails for digital and analog subsystems.", "theory_of_operation": "Uses high-frequency switching, inductors, and control loops to maintain stable output voltage.", "interaction": "Powers the Main Controller, sensors, and communication transceivers.", "category": "onsemi", "connection": [] }, { "name": "Controllers", "function": "Provide control logic for regulation and system power sequencing.", "theory_of_operation": "Implements PWM control loops, soft-start routines, and feedback-based regulation.", "interaction": "Coordinates voltage conversion stages.", "category": "onsemi", "connection": [] }, { "name": "LDO", "function": "Provides low-noise linear voltage regulation for sensitive circuits.", "theory_of_operation": "Uses a pass transistor and feedback loop to drop voltage with minimal ripple.", "interaction": "Feeds clean power to sensors and communication circuits.", "category": "onsemi", "connection": [] } ] }, { "name": "Fan Control", "function": "Controls cooling fan operation to maintain safe system temperature.", "theory_of_operation": "Uses temperature sensors and switching devices to regulate fan speed or enable/disable operation.", "interaction": "Receives power from the Auxiliary Power Supply and exchanges temperature information with the controller.", "connection": [], "sub_blocks": [ { "name": "Switch", "function": "Controls electrical activation of the cooling fan.", "theory_of_operation": "Provides on/off or PWM modulation of motor voltage.", "interaction": "Regulates fan speed based on temperature inputs.", "category": "onsemi", "connection": [] }, { "name": "Temperature Sensors", "function": "Monitor system thermal conditions.", "theory_of_operation": "Use thermistors or semiconductor sensors to generate temperature-dependent voltage levels.", "interaction": "Feed temperature readings to the control circuitry.", "category": "onsemi", "connection": [] } ] }, { "name": "Wire Feeder", "function": "Feeds welding wire at a controlled rate into the welding torch.", "theory_of_operation": "A PWM-controlled motor, feedback encoders, and current/voltage sensing circuits maintain the desired wire speed for stable welding arc formation.", "interaction": "Receives control signals from the Main Controller and regulated power from the Auxiliary Power Supply.", "connection": ["Gas Solenoid Valve"], "sub_blocks": [ { "name": "PWM Driver", "function": "Provides pulse-width-modulated control to adjust motor speed.", "theory_of_operation": "Uses switching MOSFETs driven by control logic to vary motor voltage and torque.", "interaction": "Regulates wire feed motor speed.", "category": "onsemi", "connection": [] }, { "name": "VI Sense", "function": "Measures current and voltage parameters for wire feed control.", "theory_of_operation": "Uses shunt resistors or Hall sensors to provide real-time electrical feedback.", "interaction": "Feeds operational data back to the controller.", "category": "onsemi", "connection": [] }, { "name": "Encoder", "function": "Provides rotational feedback from the wire feed motor.", "theory_of_operation": "Optical or magnetic sensor outputs pulses proportional to shaft rotation.", "interaction": "Enables closed-loop wire speed control.", "category": "onsemi", "connection": [] }, { "name": "LDO Regulator", "function": "Provides clean low-noise power to sensor circuitry.", "theory_of_operation": "Uses linear regulation to supply stable low-voltage power.", "interaction": "Ensures accurate operation of sensing and encoder electronics.", "category": "onsemi", "connection": [] }, { "name": "Wire Spool", "function": "Stores and dispenses welding wire for continuous feeding.", "theory_of_operation": "A free-rotating mechanical spool unwinds under tension applied by the wire feed motor.", "interaction": "Supplies electrode wire to the feeding mechanism.", "category": "Third party", "connection": [] }, { "name": "Communication", "function": "Transfers motor feedback and control data to the controller.", "theory_of_operation": "Implements low-speed digital links for transmitting wire speed and status.", "interaction": "Connects the wire feeder subsystem to the Main Controller.", "category": "onsemi", "connection": [] } ] }, { "name": "Welding Torch", "function": "Delivers welding current, shielding gas, and electrode wire to create the weld pool and maintain arc stability.", "theory_of_operation": "Combines DC welding output, inert gas flow, and wire feed to form a controlled electric arc capable of melting base materials and filler wire.", "interaction": "Receives power from the Inverter, wire from the Wire Feeder, and gas from the Solenoid Valve.", "category": "Third party", "connection": [] } ], "interconnections": [ {"source": "AC Input", "target": "Rectifier and PFC"}, {"source": "Rectifier and PFC", "target": "Auxiliary Power Supply"}, {"source": "Rectifier and PFC", "target": "Inverter"}, {"source": "Gate Driver", "target": "Inverter"}, {"source": "Gate Driver", "target": "Rectifier and PFC"}, {"source": "Inverter", "target": "Gas Solenoid Valve"}, {"source": "Main Controller", "target": "Gate Driver"}, {"source": "Main Controller", "target": "Communication"}, {"source": "Communication", "target": "Main Controller"}, {"source": "Communication", "target": "Wire Feeder"}, {"source": "Auxiliary Power Supply", "target": "Fan Control"}, {"source": "Auxiliary Power Supply", "target": "Wire Feeder"}, {"source": "Auxiliary Power Supply", "target": "Gas Solenoid Valve"}, {"source": "Auxiliary Power Supply", "target": "Main Controller"}, {"source": "Auxiliary Power Supply", "target": "Gate Driver"}, {"source": "Gas Solenoid Valve", "target": "Welding Torch"}, {"source": "Wire Feeder", "target": "Gas Solenoid Valve"} ], "Last_update": "2026-03-18",

DC-DC Controller - Block

产品

• 离线控制器
  • NCP1239

    用于反激转换器的固定频率电流模式控制器，带高电压启动

  • NCP1342

    准谐振反激式控制器，带谷值锁定开关

  • NCP1251

    PWM 控制器，电流模式，用于离线电源

技术文档

• Application Notes
  • AND9240/D - Upgrading NCP1236-Based Converters with NCP1239
  • AND9296/D - A 65 W Adaptor with NCP1239 Fixed Frequency Controller
  • AND8486/D - A 12V/40W Demonstrator with NCP1250
  • AND8488/D - Tips and Tricks for NCP1250
  • AND8469/D - The NCP1250, a Versatile Tiny Controller for Offline Converters
  • AND8468/D - A 60 W ac-dc Demonstrator with NCP1250
  • AND8453/D - Loop Control Design of an ac-dc Adapter Using the NCP1250
• Conformance Report
  • TND6433/D - IEC6238-1 ICX DEMKO certificate for X cap discharge products NCP1246, 1240, 1244, 1247, 1248, 1340, 1341, 1342, 1615, 12400 and 1616 series
  • TND6380/D - IEC62368-1 ICX certificate for X cap discharge products NCP1246, 1240, 1244, 1247, 1248, 1340, 1341, 1342, 1615, 12400 and 1616 series
• Data Sheet
  • NCP1239/D - Fixed Frequency Current-Mode Controller for Flyback Converter
  • NCP1342/D - Quasi-Resonant Flyback Controller, High Frequency
  • NCP1251/D - Controller, Current Mode PWM, for Offline Power Supplies
• Design & Development Tools
  • NCP134x Design Tool - NCP134x Design Tool
  • FLYBACK DWS.XLS.ZIP - Flyback Current Mode Loop Compensation Design Worksheet
  • FLYBACK TRANSFORMER DESIGN TOOL - Flyback Transformer Design Tool
• Design Notes
  • DN05105/D - USB-C, PD3.0/QC3.0, 30 W Power Adapter Solution
  • DN05104/D - USB-C, PD3.0/QC3.0, 45 W Power Adapter Solution
  • DN05126/D - NCP1342 60-W High-Efficiency QR Flyback Adapter with USB-PD / Type-C Output
  • DN05115/D - 90W TYPE-C PD3.0 / QC4.0 Power Adapter Solution
  • DN05012/D - NCP1251: 20 W Output Offline Power Supply
  • DN05039/D - NCP1251: Ultra Wide Input Triple Output 15 W (E-Meter)
  • DN05017/D - NCP1251: Low Power, Ultra-Wide AC Input Range, Electric Meter Power Supply
  • DN05028/D - NCP1251: 20 W Output Offline Power Supply Using Synchronous Output Rectification
  • DN05032/D - NCP1251: A 24 Vin, 40 Watt, Low Cost, DC-to-DC Converter
  • DN05029/D - NCP1251: 12 V, 30 W, Off-line Mini-Forward Converter
  • DN05033/D - NCP1251: 20 W Flyback with Primary Side Regulation (PSR)
• Drawing
  • NCP1251_MS - NCP1251_MS | Marking Spec
  • NCP1251_PD - NCP1251_PD | Package Drawing
  • NCP1251_PO - NCP1251_PO | Pin Out
  • NCP1251_AD - NCP1251_AD | Application Diagram
• Eval Board
  • NCP1239B65WGEVB_SCHEMATIC.pdf - NCP1239B65WGEVB SCHEMATIC | Schematic
  • NCP1239B65WGEVB_GERBER.zip - NCP1239B65WGEVB GERBER Layout Files (Zip Format) | Gerber
  • NCP1239B65WGEVB_TEST_PROCEDURE.pdf - NCP1239B65WGEVB TEST PROCEDURE | Test Procedure
  • NCP1239B65WGEVB_BOM_ROHS.pdf - NCP1239B65WGEVB Bill of Materials ROHS Compliant | BOM
  • NCP1342PD65WGEVB_SCHEMATIC - NCP1342PD65WGEVB Schematic | Schematic
  • NCP1342PD65WGEVB_PDSUB_SCHEMATIC - NCP1342PD65WGEVB_PDSUB Schematic | Schematic
  • NCP1342PD65WGEVB_GERBERS - NCP1342PD65WGEVB Gerber Files (ZIP Format) | Gerber
  • NCP1342PD65WGEVB_PDSUB_GERBERS.rev0 - NCP1342PD65WGEVB_PDSUB Gerber Files (ZIP Format) | Gerber
  • NCP1342PD65WGEVB_TEST_PROCEDURE - NCP1342PD65WGEVB Test Procedure | Test Procedure
  • NCP1342PD65WGEVB_PDSUB_BOM_ROHS - NCP1342PD65WGEVB_PDSUB Bill of Materials (ROHS Compliant) | BOM
  • NCP1342PD65WGEVB_BOM_ROHS - NCP1342PD65WGEVB Bill of Materials (ROHS Compliant) | BOM
• Models
  • NCP1250_ORCAD_MODEL - OrCAD Models for NCP1250
  • NCP1250_FLYBACK_CIRCUIT - ICAPS Flyback Drawing with NCP1250
• Package Drawing
  • 751U - SOIC-7
  • 751BP - SOIC9 NB
  • 751-07 - SOIC-8 Narrow Body
  • 318G-02 - TSOP-6 3.00x1.50x0.90, 0.95P
• System Solution Guide
  • SSG8203/D - Heat Pumps
  • SSG8222/D - USB-C Battery Charger
  • SSG8226/D - AI Data Center
  • SSG8215/D - Battery-powered Tools
  • SSG8204/D - Solar Inverter
  • SSG8202/D - Switched-Mode Power Supply (SMPS)
  • SSG8207/D - Ultra Fast EV Charger
  • SSG8208/D - Battery Energy Storage System
  • SSG8227/D - Green Hydrogen Electrolyzer
• Tutorial
  • WVD17004/D - Smart Metering - Power Management &Power Line Communications
• Video
  • WVD17592/D - 65W, 19V, Power Supply Evaluation Board - NCP1239B65WGEVB
  • WVD17442/D - 60 Watt USB Type-C Power Delivery (PD) Demo Board
  • TND6122/D - Low Cost, High Performance Off-Line Flyback 25 W Power Supply - NCP1251GEVB
• White Papers
  • TND6448/D - Popular Topologies in Offline Power Supplies

评估板/套件

• NCP1342PD65WGEVB

  NCP1342 60W USB PD评估板

FAQs