Skip to main content

LNB Power Management and Control IC from Diodes Incorporated Increases Set-Top Box Efficiency

Diodes 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) (270mΩ) 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 600µA.

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 temperature 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.

Comments

Popular posts from this blog

Banner Engineering DF-G3 Discrete Fiber Amplifier Features World-Class Long Range Sensing Capability

Banner Engineering introduces its DF-G3 discrete long-range fiber amplifier with dual digital displays for use with plastic and glass fiber optic assemblies. Featuring increased sensing power, the DF-G3 can sense more than 3 meters (10 ft.) with opposed mode fibers or more than 1 meter (3 ft.) with diffuse mode fibers. The extra power provides increased detection reliability for dark targets at long range and enhanced detection sensitivity when using specialty fiber assemblies for large area and small part detection applications.

The DF-G3 is available with a single discrete output or two dual discrete outputs. The dual discrete outputs can be independently taught to trigger at different intensity values, which is ideal for correct part-in-place or error-proofing, bottle down, and edge guiding applications.

“We developed the DF-G3 fiber amplifier to meet our customers’ need to precisely detect smaller targets at longer ranges” said Dennis Smith, Senior Marketing Manager, Banner Engin…

IDEC Releases New Line of High Efficiency Power Supplies

IDEC Corporation announces the PS5R-V line of DIN-rail power supplies, offering their customers high-efficiency in a compact form factor at competitive prices. These power supplies suit a wide range of needs in the industrial marketplace, and carry all of the required certifications necessary for use in these demanding applications. This next generation of the industry standard PS5R power supply family has updated features and specifications to meet current and future needs.

The PS5R-V line of power supplies includes 10W, 15W, 30W, 60W and 120W versions, with additional versions coming soon. These power supplies have a very compact form factor with overall dimensions reduced by up to 25% from previous generations. The reduced form factors combine with DIN-rail mounting to free up valuable control panel space and reduce installation costs.

Operating temperature ranges up to -25 to +75 degrees C offer more versatility. These extended operating temperature ranges often allow these power…

TURCK M8 CORDSETS WITH 100 PERCENT SHIELDING OPTION PROTECT AGAINST EMI/RFI

TURCK is now offering the option to completely shield M8 picofast ® cordsets by connecting a braided shield directly to the coupling nut. This provides a cost-effective and reliable connection with 100 percent cable and connector shielding, which protects against electromagnetic and radio frequency interference.

The 3 and 4-pin cordsets are available with flexlife ® PVC or PUR jacketed cable. All connectors deliver IEC IP 67 protection.

The M8 picofast line, like most TURCK cordsets, provides male or female, straight and right angle connectors, standard and custom lengths, and pigtails or extensions. Fully encapsulated mating receptacles are also offered, completing the system.