DC-DC Converters, which feature an ultra-wide 4:1 Input and Provide 50 to 200W of Output Power

A new line of rugged DC-DC converters with a high 4:1 and 50 to 200W of power, was introduced by CUI Europe.

The chassis for installation are included in an aluminum enclosure measuring 4.25 x 4 x 1.5 cm and is equipped with a heat sink to improve thermal performance. VHK The series is seen as ideal for a variety of communication and industrial applications where robust is needed.

Users can choose from a range of input from 9 to 36VDC or 72VDC and 18 to output voltage of 3.3, 5, 12, 15, 24 or 48DC. The range of the standard operating temperature is-40C 85c, 50W with the operational model 60C under convection-cooled conditions. Security features include serial VHK most temperature, input transient and short circuit protection.

Additional features include high efficiency, fast transient response remote sense, remote on / off, says the company.

IHLP Inductors is Now Available on the Vishay web site

One of the first free web-based tool that calculates the switching losses for IHLP inductors is now available on the website of Vishay. The user switching loss calculator is adapted for individual applications, so that designers and select the right part for an optimized board, while the acceleration of the market. The loss switching calculator is available for money, encourage and Buck / DC-DC converter topologies strengthen.

For the calculation of the inductance losses in the past, designers was to the complex equation by hand Steinmetz, a long process that increases the risk of human error. With the loss calculator designers just in the input and output voltage, frequency, output current, and temperature for its application. With the selection of an inductance value, ranging from 0.1μH to 10μH, the calculator provides immediate results for copper, core and total losses with rising temperature of the estimated inducer. The good Vishay IHLP room number is also displayed for the designer of the reference.

The calculator is usable for all applications IHLP inducer, including the Voltage Regulator Module (VRM) and DC-to-DC converter applications in end products, such as next generation mobile phones, laptops, desktops, servers, graphic cards, video games , Portable navigation systems, personal multimedia devices, systems and low-profile, high current power supplies and point of load (POL) converters, distributed energy systems, and field programmable gate (FPGA), says the company.

ON Semi - Industry’s highest power integrated Power over Ethernet power device

Availability of the NCP1082 and NCP1083, two new members of its POWER over Ethernet (PoE) product family, has been announced by ON Semiconductor.

The NCP1083 joins the NCP1081 as the industry’s highest power integrated Power over Ethernet Power Device (PoE-PD) supporting extended power ranges up to 40W of regulated power delivered to the application load in a 2-pair configuration, says the company.

The NCP1083 is also capable of providing power via an auxiliary parallel supply. Both NCP1082 and NCP1083 fully support the IEEE 802.3af standard and the NCP1083 enables the latest draft IEEE 802.3at (D3.0) standard including two event physical layer classification. Typical applications targeted by NCP1082 and NCP1083 include VoIP phones, WIRELESS access points, industrial Ethernet I/O modules, programmable logic controllers (PLCs), pan-tilt-zoom (PTZ) and dome security cameras, and other applications that require an auxiliary supply.

The NCP1082/3 support normal PoE operation when power is available on the Ethernet cable. In the event Ethernet power is not available, the device accepts an auxiliary supply input to power the application. This approach eliminates the need for a second DC-DC converter and therefore drastically reduces the bill of materials. The new devices support a wide range of external input voltages from 9V to 57V. ON Semiconductor’s integrated NCP1082/3 PoE-PD devices are pin-compatible with the company’s existing NCP1080/1 PoE-PD devices in the TSSOP-EP 20 pin package. Pin compatibility allows the customer to easily mix-and-match different PoE capabilities on different platforms.

The NCP1082/3 exploits ON Semiconductor’s automotive qualified high-voltage SmartPower process to provide superior cable ESD and surge protection levels compared to other integrated PD and DC-DC converter controllers. Low on-resistance (Ron) and extended temperature range from -40C to 85C with full operation up to 150C junction temperature allows the NCP1082/3 to achieve record power levels while operating in harsh environments.

“The auxiliary supply capability facilitates the transition from traditional power sources to Power over Ethernet” said Koen Geirnaert, ON Semiconductor’s PoE-PD product marketing manager. “Combined with the high power capability this feature enables a broad range of applications”

The devices' integrated DC-DC converter controller facilitates the implementation of popular and proven single-ended power supply topologies such as fly-back, buck and forward CONVERTERS for both configurations and uses a control scheme based on peak current control. The controllers have all the features needed for a flexible, robust and highly efficient design, including programmable frequency, slope compensation and soft startup, says the company.