The Holtek device range includes a power tool controller MCU, the HT45F4630, which is especially designed for motor speed control products, such as electric drills, electric screwdrivers, lawn mowers and other similar products. Holtek provides here a practical reference solution to help users with the rapid development of such products.

Power tools usually need some basic controlling functions including speed control, over temperature protection and battery over current protection. This Holtek power tool speed control solution provides a group of PWM high voltage and large current output pins which can directly drive Power MOS transistors to reduce their switching losses. Additionally, the device includes integrated over current protection and detection functions and an amplifier which allows the input signal to be amplified by 51 times, requiring a lower value current sense resistance value which will increase the overall efficiency and extend the operating time. When an over current event occurs, the PWM switching will be shut off by hardware to achieve immediate protection.

The associated technical documents can be obtained by clicking on the adjacent link. Holtek also provides users with all required technical support related to the emulation, including circuits, host software and PCBs, etc.

1

Application Areas

Electric drills, electric screwdrivers, lawn mowers and other products with motor speed control requirement.

2

Minimal external components and lower costs

Save on external MOS driving circuits and reduced number of required external components and costs.

3

Multiple protection mechanism, high reliability

Internal over current protection and detection functions provide immediate hardware protection to enhance product reliability.

 

  Disclaimer

Thank you for visiting our website. When using any of the services provided on this website, it indicates that you have read, understood and agreed to comply with the relevant regulations of the site, the declaration of intellectual property and disclaimer. If you do not agree to these terms of service it is important that you stop using the services provided by this website.
Thank you.

Don’t agree

System Architecture and Connection Diagram

With a high level of functional integration, the number of required external components as well as the PCB size can be reduced thus reducing overall product costs. This reference design provides the following circuits, which include internal level shifter for gate driving motor power MOSFETs, 12-bit A/D converter for measuring the control resistance to achieve speed measurement control and other hardware protection circuits for motor and battery protection.

(C20004-A1.ZIP) Electric Tool Speed Regulators
Description Files Solution Description and Application Notes
Application Circuits Protel format
PCB Protel format
Block Diagram PDF
Code Source code
Component List   Excel format
×

Copyright

This website's Copyright note comprise all of Holtek's Copyright contents and not limited to text, pictures, images, illustrations, phonorecords, audiovisual films, files, arrangement of web pages, web design, the Copyright Law of the Republic of China or the domestic Copyright Law, the International Copyright Treatise, related Intellectual Property Rights, Patent, Copyright, Trade Secrets and proprietary technology.

In downloading, copying or duplicating this website's contents or services, user must strictly abide by all the legal rights of Holtek Semiconductor. No part of this website contents may be altered, published, broadcasted, resold, reproduced, edited, distributed, displayed or used for commercial profit, without prior written consent or authorization from Holtek Semiconductor.

 

×

Disclaimer

1. Disclaimer

All information, trademarks, logos, graphics, videos, audio clips, links and other items appearing on this website ('Information') are for reference only and is subject to change at any time without prior notice and at the discretion of Holtek Semiconductor Inc. (hereinafter 'Holtek', 'the company', 'us', 'we' or 'our'). Whilst Holtek endeavors to ensure the accuracy of the Information on this website, no express or implied warranty is given by Holtek to the accuracy of the Information. Holtek shall bear no responsibility for any incorrectness or leakage.
Holtek shall not be liable for any damages (including but not limited to computer virus, system problems or data loss) whatsoever arising in using or in connection with the use of this website by any party. There may be links in this area, which allow you to visit the websites of other companies. These websites are not controlled by Holtek. Holtek will bear no responsibility and no guarantee to whatsoever Information displayed at such sites. Hyperlinks to other websites are at your own risk.

2. Limitation of Liability

In no event shall Holtek Limited be liable to any other party for any loss or damage whatsoever or howsoever caused directly or indirectly in connection with your access to or use of this website, the content thereon or any goods, materials or services.

3. Governing Law

The Disclaimer contained in the website shall be governed by and interpreted in accordance with the laws of the Republic of China. Users will submit to the non-exclusive jurisdiction of the Republic of china courts.

4. Update of Disclaimer

Holtek reserves the right to update the Disclaimer at any time with or without prior notice, all changes are effective immediately upon posting to the website.

 

×