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| [June 29, 2012] |
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LNB Power Management and Control IC from Diodes Incorporated Increases Set-Top Box Efficiency
PLANO, Texas --(Business Wire)--
Diodes (News - Alert) Incorporated (Nasdaq: DIOD), a leading global manufacturer and
supplier of high-quality application specific standard products within
the broad discrete, logic and analog semiconductor markets, today
announced the introduction of a family of low power LNB (low noise
block) power management and control ICs for use in set-top boxes, TVs
with built-in satellite tuners and PC satellite tuner cards. Designed to
increase product efficiency and reliability, the full-featured ZLPM8000
series ICs offers manufacturers the flexibility to address global
satellite TV standards.
Three single-output devices are initially being made available: the
high-current ZLPM8010 (750mA) and low-current ZLPM8011 (450mA), both of
which are full-featured and support DiSEqC™ 1 and DiSEqC 2 standards;
and the low-current ZLPM8012 (450mA), with a reduced feature set and
supporting the DiSEqC 1 standard only.
To increase overall STB system efficiency, the ICs' low quiescent
current boost converter operates from a standard 12V power rail and
employs a low Rds(on) (270mO) MOSFET power switch. In turn, the
converter supplies a very low volt drop (500mV) LDO regulator, providing
control signals and low noise power output to the LNB. The devices'
standby operating mode puts it into a deep sleep mode in which current
consumption is only 600�A.
The LNB supply generated by the ZLPM8000 series is highly programmable,
being configurable in 0.25V steps from 10.25V through to 19.5V; this
enables designers to match with any system architecture and adjust for
cable drops or poorly performing LNBs. The devices' integral protection
and diagnostic features include over-current limit, line short and open
circuit, over emperature shutdown and under voltage alerts.
An integrated 22kHz tone generator provides for DiSEqC and traditional
band switching control that is reliable even under no-load conditions.
To enable two-way communication between LNB and STB, the ZLPM8010 and
ZPLM8011 include the market-leading Zetex LNB DiSEqC receive technology,
which allows high reliability detection of a wide range of signals while
assuring excellent signal rejection.
Fully configurable via I2C™ interface or standard logic
inputs, the ZLPM8000 series devices are easily tailored to handle
regional variations in satellite TV standards. Using the I2C
port, designers can access an array of device functionality, including
LNB control, output adjustment, a four-level current limit, low-current
standby and various line check features.
The three devices in the ZLPM8000 product line are provided in the
compact 20-lead, 4mm x 4mm QFN package and are pin-compatible, enabling
product designers to change the IC to match local market requirements
without having to modify PCBs. For further information, visit the
Company's website at www.diodes.com.
DiSEqC is a trademark of Eutelsat (News - Alert) S.A.
I2C is a trademark of Phillips Corp.
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,
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. The Company's
corporate headquarters, logistics center, 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. The Company's wafer fabrication
facilities are located in Kansas City, Missouri and Manchester, with two
manufacturing facilities located in Shanghai, China, another in Neuhaus,
and two joint venture facilities located in Chengdu, China. Additional
engineering, sales, warehouse, and logistics offices are located in Fort
Worth, Texas; Taipei; Hong Kong; Manchester; and Munich, Germany, with
support offices located throughout the world. For further information,
including SEC (News - Alert) filings, visit the Company's website at http://www.diodes.com.
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