Plano, Texas – June 12th 2014 – By enabling the speed of fans, blowers and extractors to be simultaneously controlled by both PWM and thermistor input signals, the AM4964 motor driver helps create more responsive cooling systems for PCs, servers and industrial instrumentation.
A single-phase, full-wave, brushless DC motor driver, the AM4964 operates from a 12V supply and delivers a peak motor current of up to 1A. Motor speed is varied between low and high temperature set-points in response to ambient temperature and PWM input signal.
Set-points and maximum PWM output are easily adjusted using just three external resistors. The device offers a tachometer output, a bias output for a differential unbuffered Hall sensor and dedicated inputs for 3- or 4-pin Hall sensors for rotor position detection.
A highly integrated device in the TSSOP-20EP package, the AM4964 also includes a built-in oscillator, removing the need for an external capacitor; a minimum speed-setting circuit; and adjustable alpha slope technology to support different speed curve requirements.
To protect the motor coil, the driver incorporates thermal shutdown, rotor lock detection and auto-restart functions.
The AM4964 single phase, full wave motor driver from Diodes Incorporated is priced at $0.38USD each in 10K piece quantities. Further information is provided at www.diodes.com
About Diodes Incorporated
Diodes Incorporated (Nasdaq: DIOD), a Standard and Poor’s SmallCap 600 and Russell 3000 Index company, is a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete, logic and analog semiconductor markets. Diodes serves the consumer electronics, computing, communications, industrial, and automotive markets. Diodes’ products include diodes, rectifiers, transistors, MOSFETs, protection devices, functional specific arrays, single gate logic, amplifiers and comparators, Hall-effect and temperature sensors; power management devices, including LED drivers, AC-DC converters and controllers, DC-DC switching and linear voltage regulators, and voltage references along with special function devices, such as USB power switches, load switches, voltage supervisors, and motor controllers. Diodes’ corporate headquarters and Americas’ sales office are located in Plano, Texas. Design, marketing, and engineering centers are located in Plano; San Jose, California; Taipei, Taiwan; Manchester, England; and Neuhaus, Germany. Diodes’ wafer fabrication facilities are located in Kansas City, Missouri and Manchester, with four manufacturing facilities located in Shanghai, China, and two joint venture facilities located in Chengdu, China, as well as manufacturing facilities located in Neuhaus and Taipei. Additional engineering, sales, warehouse, and logistics offices are located in Fort Worth, Texas; Taipei; Hong Kong; Manchester; Shanghai; Shenzhen, China; Seongnam-si, South Korea; Suwon; Tokyo, Japan; and Munich, Germany, with support offices throughout the world. For further information, including SEC filings, visit Diodes’ website at http://www.diodes.com.
