MOSFET Driver for Synchronous Rectification from Diodes Incorporated Supports CCM, DCM, and QR Operation
06 Februar 2020 - 4:14PM
Business Wire
Diodes Incorporated (Nasdaq: DIOD) today announced the
introduction of the APR348 secondary-side, multi-mode synchronous
rectification MOSFET driver, designed for AC-DC rectification
circuits in general consumer applications, notebooks, and USB
adapters.
The APR348 is capable of driving the external MOSFET in both
high-side and low-side secondary-side synchronous-rectifier
configurations. This flexible and efficient device supports
secondary-side output voltages up to 20V in continuous conduction
mode (CCM), discontinuous conduction mode (DCM), and quasi-resonant
(QR) flyback modes. These options give development teams total
freedom over how they implement synchronous rectification.
Manufacturers often choose an external MOSFET when implementing
synchronous rectification as it provides greater efficiency
converters. As the APR348 requires very few additional external
components, engineers can still realize extremely small and
efficient power supply designs that meet the demands of the
consumer sector.
A key design feature of the APR348 is fast turn-on and turn-off
times, which reduces power loss and ensures safe operation when in
CCM mode. The device also features a blanking period to set the
minimum turn-on period for the MOSFET; this significantly improves
performance by limiting the impact of voltage ringing.
The APR348 also features a light load (LL) mode, which uses an
internal timer to skip cycles when there is no load or only a light
load detected at the output. This design delivers lower standby
power at no load. In addition, high-side switching does not require
an additional transformer winding, further minimizing the bill of
materials cost.
The APR348 is available in the SOT26 Type CJ package.
Further information is available 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, 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, UK; and Neuhaus, Germany. Diodes’ wafer
fabrication facilities are located in Manchester and Greenock, UK,
and 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; Munich, Germany; and Tokyo, Japan, 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.
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version on businesswire.com: https://www.businesswire.com/news/home/20200206005033/en/
Company Contact: Diodes Incorporated Emily Yang VP,
Worldwide Sales and Marketing P: 972-987-3900 E:
pressinquiries@diodes.com
Investor Relations Contact: Shelton Group Leanne K.
Sievers EVP, Investor Relations P: 949-224-3874 E:
lsievers@sheltongroup.com
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