Editorial Technical Reference

Driver/Amplifier

This page explains how Driver/Amplifier is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Electronic control unit that receives low-power command signals and amplifies them to drive servo motors with precise power output.

Product Specifications

Technical details and manufacturing context for Driver/Amplifier

Definition
A critical component within servo motor systems that interprets control signals from a motion controller and converts them into high-power electrical currents to precisely operate servo motors. It regulates torque, speed, and position by managing voltage and current to the motor windings, enabling accurate motion control in industrial automation applications. The driver/amplifier is typically housed in a metal enclosure with a printed circuit board (PCB) containing power semiconductors such as IGBTs or MOSFETs, an aluminum heat sink for thermal management, and copper windings for filtering and current sensing. It operates on a supply voltage of 24 V DC ±10%, with a rated output current of 5–20 A per phase and a peak output current of 15–60 A for 2 seconds. Output power ranges from 0.5 to 5.0 kW, depending on the motor rating. Control accuracy is ±0.01% of full scale, and frequency response is 0–500 Hz (small-signal bandwidth). Operating temperature is -10 to 50 °C, with derating above 40 °C; storage temperature is -40 to 85 °C. Protection rating is IP54–IP65 per IEC 60529, and relative humidity is 5–95% non-condensing. Weight ranges from 2 to 15 kg, and dimensions vary from 100×200×150 mm to 300×400×250 mm (W×H×D). These values are directory reference ranges and must be confirmed for the specific model and application. The driver/amplifier is a component used in machinery and equipment manufacturing, particularly in servo motor systems for industrial automation. It is not a standalone product but an integral part of a motion control system. When selecting a driver/amplifier, verify compatibility with the servo motor's voltage, current, and power requirements, as well as the control interface (analog or digital). Also consider environmental conditions, mounting dimensions, and protection rating. Always consult the legal manufacturer or supplier for model-specific specifications and standards compliance.
Working Principle
The driver/amplifier receives low-voltage command signals (typically ±10V analog or digital pulses) from a motion controller. These signals are processed by power transistors (IGBTs or MOSFETs) on the PCB, which amplify them to deliver controlled high-current power to the servo motor. The unit uses feedback from encoders or resolvers to adjust output in real-time, enabling closed-loop control of torque, speed, and position. The aluminum heat sink dissipates heat generated by power semiconductors, and copper windings help filter and sense current. The control algorithm modulates voltage and current to the motor windings based on the command signal and feedback, ensuring precise motion.
Common Materials
Printed Circuit Board (PCB), Power semiconductors (IGBTs/MOSFETs), Aluminum heat sink, Copper windings
Technical Parameters
ParameterTypical rangeNotes & selection driver
Supply Voltage24 ±10% V DCOutside this range, protection triggers.
Rated Output Current5–20 AContinuous current per phase.
Peak Output Current15–60 AFor 2 s overload.
Output Power0.5–5.0 kWDepends on motor rating.
Control Accuracy±0.01 %Of full scale.
Frequency Response0–500 HzSmall-signal bandwidth.
Operating Temperature-10–50 °CDerate above 40 °C.
Storage Temperature-40–85 °CNon-condensing.
Protection RatingIP54–IP65Higher IP for harsh environments.IEC 60529
Relative Humidity5–95 %Non-condensing.
Weight2–15 kgDepends on power rating.
Dimensions (W×H×D)100×200×150–300×400×250 mmVaries with model.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Power Stage
    Amplifies control signals to high-power output using IGBTs or MOSFETs
    Material: Semiconductor silicon, copper
  • Control Board
    Processes input signals and implements control algorithms
    Material: PCB, microcontrollers, memory chips
  • Heat Sink Part
    Dissipates heat generated by power semiconductors
    Material: Aluminum alloy
  • Feedback Interface
    Receives and processes encoder/resolver signals for closed-loop control
    Material: PCB, optocouplers, connectors

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Not applicable (electronic component)
other spec: Input signal range: 0-10V or 4-20mA, Output power: 50W to 5kW typical
temperature: -20°C to +70°C operating, -40°C to +85°C storage
Media Compatibility
✓ Industrial automation systems ✓ CNC machinery ✓ Robotic arms
Unsuitable: High-vibration environments without proper mounting
Sizing Data Required
  • Motor power rating (kW)
  • Required torque/speed profile
  • Input signal type and range

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Overheating and thermal degradation
Cause: Inadequate cooling, excessive load, poor ventilation, or ambient temperature exceeding specifications leading to component failure (e.g., transistors, capacitors).
Electrical surge damage
Cause: Power supply fluctuations, lightning strikes, or improper grounding causing catastrophic failure of sensitive electronic components (e.g., ICs, power transistors).
Maintenance Indicators
  • Audible high-pitched whining or buzzing from the unit indicating potential transformer or capacitor issues.
  • Visible discoloration, bulging, or leaking from capacitors on the circuit board, signaling imminent failure.
Engineering Tips
  • Implement regular thermal monitoring using infrared cameras or temperature sensors to detect hotspots early and ensure cooling systems (fans, heat sinks) are clean and functional.
  • Install surge protection devices (SPDs) and ensure proper grounding to shield against electrical transients, and use a regulated power supply to maintain stable input voltage.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
IEC 61800-5-1:2022 — Adjustable speed electrical power drive systems, Part 5-1: Safety requirements (electrical, thermal and energy) IEC 61800-3 — Adjustable speed electrical power drive systems, Part 3: EMC requirements and specific test methods IEC 61000-6-2:2016 — EMC generic standards: immunity for industrial environments UL 61800-5-1 — Adjustable Speed Electrical Power Drive Systems

Quoted from the published standard.

Manufacturing Precision
  • Output Voltage Regulation: +/- 1% of nominal
  • Thermal Drift: +/- 0.02%/°C over operating temperature range
Quality Inspection
  • Dielectric withstand and insulation resistance test
  • Thermal run-up test at rated continuous current

Manufacturers of Driver/Amplifier

2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Hisiwell
Chengdu, Sichuan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Driver Amplifiers”
View source page ↗ hisiwell.com · checked 2026-09-14
MeiXun (Wuxi) Communication Technology Co.,Ltd.
Wuxi, Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Driver Amplifiers”
View source page ↗ dbdesignmw.com · checked 2026-09-14

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What is the function of a servo driver/amplifier?

It receives low-power command signals from a motion controller and amplifies them to provide high-power electrical currents to drive a servo motor. It regulates torque, speed, and position by controlling voltage and current to the motor windings.

What are the typical input signals for a servo driver/amplifier?

Typical input signals are low-voltage analog signals (e.g., ±10V) or digital pulses from a motion controller. These signals are processed and amplified to drive the motor.

How does feedback work in a servo driver/amplifier?

The driver/amplifier uses feedback from encoders or resolvers to monitor the motor's actual position, speed, and torque. It adjusts the output in real-time to match the commanded values, enabling closed-loop control.

What should I verify before selecting a servo driver/amplifier?

Verify compatibility with the servo motor's voltage, current, and power ratings. Check the control interface (analog or digital), environmental conditions (temperature, humidity, protection rating), and mounting dimensions. Always confirm model-specific values with the manufacturer or supplier.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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