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This section provides an overview for pwm controllers as well as their applications and principles. Also, please take a look at the list of 16 pwm controller manufacturers and their company rankings. Here are the top-ranked pwm controller companies as of January, 2025: 1.Morningstar Corporation, 2.Analog Devices, Inc., 3.Jai Sunlight Systems.
Table of Contents
A PWM (pulse width modulation) controller is a device that adjusts the pulse width of current or voltage, maintaining a constant frequency. This modulation alters the duty cycle to control the duration of the 'on' and 'off' states of the pulses. The duty cycle is calculated by dividing the pulse width by the total cycle time. Semiconductor devices are utilized for PWM switching.
PWM controllers regulate motor speeds across various types, including AC, DC, and synchronous motors. In the manufacturing industry, AC motors often incorporate feedback from speed detectors, like pulse generators, to adjust the motor's speed accurately. The feedback signal is processed to determine the precise voltage required, which is then applied using the PWM controller integrated into the board.
PWM controllers generate output pulses by modulating a sine wave (the control source) with a sawtooth wave (carrier) using a comparator made of operational amplifiers. A pulse is created when the sine wave exceeds the sawtooth wave and is turned off when it is less. This process produces pulses that are denser at higher sine wave values and sparser at lower ones. Switching devices, such as transistors and thyristors, are employed for this on/off mechanism, functioning through signals received at their gates.
The structure of a PWM controller includes three primary components: a data register, a counter, and a comparator. Each period and duty register is associated with a specific comparator, whose outputs connect to the set and reset pins of a flip-flop circuit. This configuration allows for precise control of the PWM signal's cycle width and pulse width, enabling the output of a consistent PWM signal.
PWM control benefits from reduced stress on transistors and currents by only allowing current flow during the 'on' phase of power pulses. However, a drawback is the potential for a self-induction effect caused by the motor's coil inductance when PWM control is off, leading to significant electromagnetic interference and potential damage. Implementing flywheel diodes in the circuit mitigates these issues by redirecting reverse power back to the motor.
*Including some distributors, etc.
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Incorporated in 1965, Analog Devices, Inc. designs, manufactures, tests, and markets integrated circuits (ICs), software, and subsystems that leverage analog, mixed-signal, and digital signal processing technologies. The company provides data converter products, power management and reference products for power conversion, driver monitoring, sequencing, and energy management applications in the automotive, communications, industrial, and high-end consumer markets. In addition, the company provides digital signal processing and system products for high-speed numeric calculations. It serves clients in the industrial, automotive, consumer, instrumentation, aerospace, and communications markets.
Morningstar Corporation, established in 1993 in the USA, is a manufacturer that specializes in solar charge controllers, inverters, and accessories for off-grid systems, catering to diverse industries, but especially in the oil and gas industry. The products that company currently offers includes solar charge controllers, off-grid inverters, ready rail products, and accessories. It holds H a2 LOC certification on all models, with ATEX quality assurance and IECEX quality assurance registration. Company is certified for hazardous locations and has proven effectiveness in telecommunications, mining, security, transportation, and other sectors.
Renesas Electronics Corporation was established in 2002 and is headquartered in Tokyo, Japan. Renesas is a global research, design, and manufacturer of semiconductors used in industries spanning automotive, consumer electronics, the internet of things, power & energy, and industrial sectors. Renesas manufactures both analog and digital products. Analog products include amplifiers, audio & video devices, data converters, PLC, and switches & multiplexers. Digital products include microcontrollers, memory components, sensors, wireless connectivity products, and others. Renesas also offers design resources such as kits, development tools, partner programs, and design tools.
ST Micro Electronics is a global semiconductor company serving customers with innovations to have a positive impact on people's lives. Their product line is micro electronic systems, such as switches, controllers, sensors and drivers. The main selling point of ST Micro Electronics is its provision of sustainable products, and introducing their electronics to create a more sustainable world. The company, as well as providing the electronic devices, also provides software and support, ensuring that all fields are covered to provide a fully provide a supported and strong relationship with their customer base. ST Micro Electronics believe that technology plays a key role in helping to solve environmental and social challenges, which is why their semiconductor technologies start with their employees, their customers and partners.
Ranking as of January 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Morningstar Corporation |
22.7%
|
| 2 | Analog Devices, Inc. |
18.2%
|
| 3 | Jai Sunlight Systems |
9.1%
|
| 4 | Ningbo Kosun New Energy Co.,Ltd |
4.5%
|
| 5 | Shandong Xinxu Group Corporation Ltd |
4.5%
|
| 6 | Shanghai RAGGIE Power Co., Ltd. |
4.5%
|
| 7 | Shenzhen ShengShi TianHe Electronic Technology Co.,Ltd |
4.5%
|
| 8 | Techno Sphere Inc. |
4.5%
|
| 9 | CHANGZHOU SUPEREN NEW ENERGY TECHNOLOGY CO.,LTD |
4.5%
|
| 10 | CIXI CAIYUE PHOTOVOLTAIC TECHNOLOGY CO.,LTD |
4.5%
|
Derivation Method
The ranking is calculated based on the click share within the pwm controller page as of January 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
China
|
6 | 46.2% |
India
|
3 | 23.1% |
|
United States of America
|
2 | 15.4% |
|
Japan
|
2 | 15.4% |
59 products found - Page 2
59 products - Page 2
Michinoku Trade LLC
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■30A PWM solar charge controller Parameter setting possible/PC real-time monitoring possible This is a PWM solar charge controller. By connecting t...
Servo Techno Co., Ltd.
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■Summary SBLM720 is a driver that enables speed control, positioning control (pulse input option), and torque control (option) for brushless DC mot...
Denryo Co., Ltd.
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■Night detection function Sunset and sunrise are detected using the output of the connected solar cell module, and the load is controlled. You can ...
2 models listed
Denryo Co., Ltd.
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■High weather resistance The substrate is conformally coated to minimize damage from humidity or insect nests. ■Easy installation There are no adj...
Sanshin Electric Co., Ltd.
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Sanshin Electric Co., Ltd.
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Sanshin Electric Co., Ltd.
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