Small-Outline Synchronous Rectification MOSFET Driver for Off-Line Power Adapters from Diodes
Incorporated
Diodes Incorporated (Nasdaq: DIOD), a leading global manufacturer and supplier of high-quality application specific standard
products within the broad discrete, logic, analog, and mixed-signal semiconductor markets, today announced the APR346
secondary-side synchronous rectification MOSFET driver, providing increased efficiency for off-line power adapters delivering 5V to
20V DC from an AC supply.
Designed to operate in continuous-conduction mode (CCM), discontinuous-conduction mode (DCM), and quasi-resonant mode (QR), the
APR346 is used to drive an external MOSFET to deliver the benefits of synchronous rectification (SR), which provides significantly
higher performance and efficiency than diode-based secondary side rectification. SR is now preferred by power adapter manufacturers
and is expected to form the basis of power adapters for notebooks, mobile phones and a range of other portable devices, many of
which will be adopting the USB Type-C™ connector with PD (power delivery) capabilities.
The APR346 requires very few additional components and because it is designed to operate with an external MOSFET it offers
maximum design flexibility. With fast turn-on and turn-off times of 70ns and 100ns (typ), respectively, it achieves high
performance through directly sensing the drain-source voltage of the external MOSFET and rapidly turning the MOSFET on or off
according to demand from the load. A built-in minimum on-time of 1.6μs (typ) effectively blanks out any potential drain voltage
ringing to maintain efficient operation as the load current begins to flow through the channel.
Further information is available at www.diodes.com.
USB Type-C™ is a trademark of USB Implementers Forum.
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, analog and
mixed-signal semiconductor markets. Diodes serves the consumer electronics, computing, communications, industrial, and automotive
markets. Diodes’ products include diodes, rectifiers, transistors, MOSFETs, protection devices, function-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 also has timing,
connectivity, switching, and signal integrity solutions for high-speed signals. Diodes’ corporate headquarters and Americas’ sales
office are located in Plano, Texas and Milpitas, California. Design, marketing, and engineering centers are located in Plano;
Milpitas; Taipei, Taiwan; Taoyuan City, Taiwan; Zhubei City, Taiwan; Manchester, England; and Neuhaus, Germany. Diodes’ wafer
fabrication facility is located in Manchester, with an additional facility located in Shanghai, China. Diodes has assembly and test
facilities located in Shanghai, Jinan, Chengdu, and Yangzhou, China, as well as in Hong Kong, Neuhaus and Taipei. Additional
engineering, sales, warehouse, and logistics offices are located in Taipei; Hong Kong; Manchester; Shanghai; Shenzhen, China;
Seongnam-si, South Korea; and Munich, Germany, with support offices throughout the world.
Recent news releases, annual reports and SEC filings are available at the Company’s website: http://www.diodes.com. Written requests may be sent directly to the Company, or they may be e-mailed to:
diodes-fin@diodes.com.
Company Contact:
Diodes Incorporated
Emily Yang, 972-987-3900
VP, Worldwide Sales and Marketing
pressinquiries@diodes.com
or
Investor Relations Contact:
Shelton Group
Leanne K. Sievers, 949-224-3874
EVP, Investor Relations
lsievers@sheltongroup.com
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