Newly introduced by Linear Technology are the LTC4266A and LTC4274A, four-port and single-port Power over Ethernet (PoE) controllers for power sourcing equipment (PSE), delivering up to 90 W of power to powered devices (PDs).
The current IEEE standard, 802.3at (also known as PoE+), limits the maximum available power to PDs to 25,5 W. By the time the standard was ratified in 2009, applications were already demanding higher power levels. The LTC4266A and LTC4274A address this higher-power PoE market using Linear’s LTPoE++ signalling scheme to mutually identify and provide PDs with up to 90 W of power, while ensuring backward compatibility and interoperability with equipment based on the existing IEEE PoE standard.
Linear offers high-power versions covering 35 W, 45 W, 70 W and 90 W power levels, so that discrete components and magnetics can be sized accordingly. Low-power 13 W versions, the LTC4266C and LTC4274C, are also now available for fully automatic Type 1 PoE systems.
The LTC4266A and LTC4274A enable a new generation of high power PoE applications, including long range wireless access points (WAP), thin clients and heated surveillance cameras. Capabilities of the LTC4266A and LTC4274A include very low power dissipation across low-RDS(ON) MOSFETs and sense resistors (0,34 Ω total per port).
LTPoE++ PDs can request up to 90 W of power by responding to a proprietary classification mechanism, confirming that the PD is indeed a high-power LTPoE++ compliant device. Very high reliability PD discovery is accomplished using a proprietary dual-mode, four-point detection mechanism that ensures immunity from false PD detection.
Linear’s PSE controllers offer advanced power management that includes prioritised fast shutdown, accurate 14,5-bit per port voltage and current read-back, 8-bit programmable current limits and 7-bit programmable overload current limits. A 1 MHz I²C interface allows a host controller to digitally configure the IC or to query port readings. Firmware is conveniently field upgradable.
Ryzen-based computer on module Altron Arrow
AI & ML
SolidRun announced the launch of its new Ryzen V3000 CX7 Com module, configurable with the eight-core/16-thread Ryzen Embedded V3C48 processor.
Read more...Robust and customisable SBC Altron Arrow
DSP, Micros & Memory
Pairing the powerful i.MX8M Plus System on Module (SoM) from SolidRun, which features the i.MX 8M Plus SoC from NXP, this high-performance SBC is set to transform industrial environments.
Read more...New family supports future cryptography Altron Arrow
DSP, Micros & Memory
NXP has introduced its new i.MX 94 family, which contains an i.MX MPU with an integrated time-sensitive networking (TSN) switch, enabling configurable, secure communications with rich protocol support in industrial and automotive environments.
Read more...NXP’s all-purpose microcontroller series Altron Arrow
DSP, Micros & Memory
NXP has released its MCX A14x and A15x series of all-purpose microcontrollers which are part of the larger MCX portfolio that shares a common Arm Cortex-M33 core platform.
Read more...Non-terrestrial network module Altron Arrow
Telecoms, Datacoms, Wireless, IoT
Fibocom unveiled its MA510-GL (NTN), a non-terrestrial networks module which is compliant with 3GPP Release 17 standard.
Read more...Cellular IoT connectivity via satellite Altron Arrow
Telecoms, Datacoms, Wireless, IoT
The Telit Cinterion cellular LPWA module will enable satellite data communication using the NB-IoT protocol, without any special hardware changes required for the integration of the cellular module in the customer application.
Read more...Wine farm turns to solar installation for power Current Automation
Power Electronics / Power Management
Slanghoek Wine farm opted into a power purchase agreement to lower overall electricity costs and enter a true sustainable future, with a price-competitive edge on lower running costs.
Read more...Industrial PSU family Brabek
Power Electronics / Power Management
The RACPRO1 family of PSUs supports a universal DC input voltage range from 430 to 850 V DC, allowing the parts to support renewable energy and microgrid applications.
Read more...Integrated POL voltage regulators EBV Electrolink
Power Electronics / Power Management
Infineon’s TDA38807 and TDA38806 are their highest density high-efficiency integrated point-of-load (IPOL) solutions for smart enterprise systems.
Read more...Low noise 3-axis MEMS accelerometers Altron Arrow
DSP, Micros & Memory
The ADXL357 and ADXL357B from Analog Devices are digital outputs, low noise density, low 0 g offset drift, low power, three-axis accelerometers with selectable measurement ranges.
printer friendly version