MEAN WELL VFD-350C-230 350W AC Input Variable Frequency Drive Module with PFC Function

Overview

The MEAN WELL VFD-350C-230 is a 350W AC input variable frequency drive module with built-in PFC function, designed for 3-phase 200–240V class motor drive applications. It provides an integrated power stage with gate drivers and basic VFD sensor functions, allowing system designers to build motor drive solutions by coordinating the module with an external motor drive controller through logic-level and analog I/O.

As a metal case type VFD module, the VFD-350C-230 supports a 90–264VAC full range input and includes built-in PFC boost to 380VDC. Its three-phase motor output supports up to 380V max, with line-to-line voltage adjustable from 0–268V by modulated PWM. The module is intended for use with BLDC motors, induction motors, and SynRM motor drive applications.

The VFD-350C-230 delivers 350W rated power, 93% typical efficiency, and high peak current capability up to 200% for 5 seconds. Its fanless design makes it suitable for motor drive systems where silent operation, compact integration, and long service life are important.

Typical applications include HVAC systems, fans, water and air pumps, power tools, conveyors, automatic doors, fitness equipment, and other three-phase motor drive systems requiring an AC input VFD power module with PFC function.

Features

• 350W AC Input Variable Frequency Drive Power Module with PFC Function
• 90–264VAC Full Range Input
• Built-In PFC Boost to 380VDC
• Line-to-Line Output Voltage Adjustable from 0–268V by Modulated PWM
• Integrated Power Stage, Gate Drivers, and Basic VFD Sensor Functions
• 3-Phase PWM Control Compatible with 3.3V TTL / CMOS Input Signals
• High Peak Current Capability up to 200% for 5 Seconds
• 93% Typical Efficiency
• Fanless Design for Silent Operation and Long Lifetime
• Built-In Current Sensor Outputs, DC Bus Voltage Sensor, and IGBT Temperature Sensor
• Auxiliary 15V Output Power for External Control Board
• Short Circuit and Overcurrent Protection with Active-Low Fault Signal Output
• Wide -30°C to +60°C Operating Temperature Range
• Suitable for BLDC, Induction Motor, and SynRM Three-Phase Motor Drive Systems

Need help applying the VFD-350C-230 to your motor drive system? Review the main specifications and control functions below, or contact us for model availability and application support.

Control Functions

The MEAN WELL VFD-350C-230 integrates the main power-stage and sensing functions required for a three-phase motor drive system. It is designed to work with an external motor drive control board through 3.3V TTL / CMOS PWM input signals and analog sensor outputs.

3-Phase PWM Control

The VFD-350C-230 provides six-switch control using three half-bridge IGBTs. PWM_UH / PWM_UL, PWM_VH / PWM_VL, and PWM_WH / PWM_WL inputs are used to control the U, V, and W phases. The PWM input is compatible with 3.3V TTL / CMOS signals, with High > 2.7V and Low < 0.4V. A minimum 300ns dead-time is required between the upper and lower switches of each phase.

Current Detection and Overcurrent Protection

Low-side 100mΩ shunt resistors are built into each phase for current measurement and short-circuit detection. If the output current exceeds 200% of the rated value, the internal protection circuit shuts down the gate driver for protection.

DC Bus Voltage Detection

The built-in HV+ sensor provides a 2.5V output when the DC bus voltage is 380V. This output can be used by the external control board for DC bus monitoring and protection logic. For safety, the PWM input signal should be shut down when the DC bus voltage exceeds 420V.

Temperature Detection and Fault Signal

The module includes a built-in NTC resistor for IGBT temperature detection. It is suggested to shut down the PWM input when the temperature is above 100°C. The VFD-350C-230 also provides an active-low FAULT signal to notify the external controller when an overcurrent state occurs.

Mechanical Dimensions and Installation

The MEAN WELL VFD-350C-230 is a metal case type AC input variable frequency drive module designed for integration into three-phase motor drive systems. Its compact mechanical format supports embedded motor control applications where AC input, PFC function, silent operation, and external control flexibility are required.

According to the mechanical specification, the VFD-350C-230 measures 146 × 62 × 31 mm, with a tolerance of ±1 mm. The module includes AC input terminals, three-phase motor output terminals, a 380V DC bus connector for brake circuit design, and a CN93 control connector for integration with an external motor drive control board.

Dimensions

The VFD-350C-230 has mechanical dimensions of 146 × 62 × 31 mm. This compact size allows the module to be installed inside HVAC equipment, fan systems, pump systems, automatic doors, fitness equipment, and other embedded three-phase motor drive applications.

Connector Layout

The module includes dedicated terminals and connectors for AC input, U / V / W motor output, 380V DC bus connection, and control signal assignment. The CN93 control connector provides access to HV+ voltage sensing, auxiliary 15V output, temperature sensing, fault signal output, PWM control inputs, and phase current sensor outputs.

Installation Notes

The VFD-350C-230 uses a fanless design, but thermal installation is still important. According to the datasheet, the module should be installed onto an aluminum plate or equivalent cabinet surface to meet the derating curve and static characteristics. For optimized thermal performance, the aluminum plate should have an even and smooth surface, and the module should be firmly mounted at the center of the plate. Forced air cooling may also be used when required by the final equipment design.

Need application and compliance information for the VFD-350C-230? Continue below to explore recommended applications, safety approvals, EMC information, and datasheet download.

Applications

The MEAN WELL VFD-350C-230 is suitable for three-phase motor drive systems that require an AC input VFD power module with built-in PFC function. According to the datasheet, typical applications include HVAC systems, fans, water and air pumps, power tools, conveyors, automatic doors, and fitness equipment.

With its 350W rated power, 90–264VAC full range input, built-in PFC boost to 380VDC, fanless design, and integrated sensing functions, the VFD-350C-230 is well suited for embedded motor drive applications where AC input compatibility, reliability, and external control flexibility are important.

• HVAC Systems
• Fan Applications
• Water and Air Pumps
• Power Tools
• Conveyors
• Automatic Doors
• Fitness Equipment
• BLDC, Induction Motor, and SynRM Drive Systems

Need certification and compliance details for your project? Continue below to review the safety standards, EMC information, and related approval data for the VFD-350C-230.

Certifications and Safety

The MEAN WELL VFD-350C-230 includes safety and EMC compliance information for AC input variable frequency drive module applications. These approvals and test standards help support integration into motor drive equipment, industrial control systems, HVAC equipment, pump systems, and other embedded three-phase motor applications.

According to the official datasheet, the VFD-350C-230 includes the following safety and EMC information:

• CB IEC61800-5-1
• TUV / BS EN / EN61800-5-1
• EAC TP TC004 Approved
• EMC Emission: BS EN / EN IEC61800-3, Second Environment
• Conducted Emission: BS EN / EN IEC61800-3, Class A, C2
• Radiated Emission: BS EN / EN IEC61800-3, Class A, C2
• Harmonic Current: BS EN / EN IEC61000-3-2, Class A
• Voltage Flicker: BS EN / EN61000-3-3
• EMC Immunity: BS EN / EN IEC61800-3
• ESD: BS EN / EN61000-4-2, Level 3 8kV Air, Level 2 4kV Contact
• Radiated Immunity: BS EN / EN IEC61000-4-3, Level 3
• EFT / Burst: BS EN / EN61000-4-4, Level 3
• Surge: BS EN / EN61000-4-5, Level 3 2kV Line-Earth, Level 3 1kV Line-Line
• Conducted Immunity: BS EN / EN61000-4-6, Level 3
• Magnetic Field: BS EN / EN61000-4-8, Level 4
• Voltage Dips and Interruptions: BS EN / EN IEC61000-4-11

The datasheet also lists short circuit and overcurrent protection. When a fault condition occurs, the module shuts down output voltage and requires re-power on to recover. The external control design should also monitor current, DC bus voltage, temperature, and the active-low FAULT signal to support safe system-level operation.

Need more product details before sending an inquiry? Continue below to review common questions about the VFD-350C-230.