Kinetic Technologies IEEE® 802.3bt-Compliant Powered Device KTA1140 and DC-DC Flyback Controller KTB1095 for PoE Power Supplies

时间： 2023-11-27 来源：Kinetic Technologies News

技术问答

New ICs combine to provide an 802.3bt-compliant power supply at maximum power with digital isolator feedback and local power compatibility.

Power management and video/audio interface IC leader Kinetic Technologies announced today the KTA1140 IEEE 802.3bt-compliant Powered Device Interface IC and the KTB1095 synchronous flyback control IC with integrated digital isolated feedback as the latest additions to their PoE and DC-DC Converter product lines.

Fully compliant with IEEE 802.3bt, 802.3at, and 802.3af standards, the KTA1140 integrates input surge protection, a PD controller with 100V, low resistance 0.1Ω hot-swap MOSFET, which fully supports input power levels up to 90W. The PD controller also includes eight-event classification, ATDET, PD Detect, over temperature protection, and under voltage lockout (UVLO). The KTA1140 is also designed to provide seamless support for local supplies down to 9.5V.

The KTB1095 DC-DC Flyback Controller is a highly integrated synchronous flyback converter with internal feedback utilizing a 3000VRMS digital isolator, designed to eliminate the need for an external opto-coupler, reducing cost and size. Operating over a wide operating voltage range from 5V to 100V, the KTB1095 includes both primary and secondary side, high current MOSFET drivers, and employs current-mode constant on-time control for fast transient response. Featuring an adjustable soft-start function to limit start-up in-rush current, the KTB1095 also includes input voltage UVLO, output over-voltage-protection (OVP), cycle-by-cycle current limit, short-circuit protection and thermal shutdown.

“Our goal at Kinetic is to make it as easy as possible for our customers to design their PoE power supplies,” said Erik Ogren, Kinetic Technologies’ Senior Director of Marketing. “The KTA1140 supports Class 8, 90W designs with its ultra-low resistance hot-swap MOSFET and simplifies system designs with local voltage support. KTB1095 takes advantage of Kinetic’s Tru-Iso™ technology to deliver integrated 3000V-rms on-chip digital isolator feedback, reducing BOM count and PCB area.”

Key Product Highlights:

KTA1140 – PoE 802.3bt PD Interface

Fully supports IEEE® 802.3bt

- Input Power Levels Up to 90W

- Class 0-8 for PoE PD

Compatible with IEEE® 802.3af/at

IEC 61000-4-2/3/4/5/6 requirements for EMC

Seamless support for local power down to 9.5V

Programmable DC current limit

Low resistance (typ. 0.1Ω) Hot Swap MOSFET

5×5mm, 20 lead QFN Package

KTB1095 – 100V Synchronous Flyback Controller with Digital Isolation

Wide 5V to 100V Operating Voltage Range

Integrated Digital Isolator Feedback

- 3000V-rms Integrated Isolation

±1% Voltage Reference

Integrated primary and secondary side MOSFET Drivers

- 3A Sink/2A Source driving capability

Adjustable Switching Frequency from 100kHz to 700kHz

Integrated Protection: Cycle-by-cycle current limit, Input UVLO, OCP, SCP, TSP

SOIC-16 Wide Body (10.3mm x 7.5mm) Package

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本文由上山打老虎转载自Kinetic Technologies News，原文标题为:Kinetic Technologies Announces New IEEE® 802.3bt-Compliant Powered Device and DC-DC Flyback Controller Solution for PoE Power Supplies，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

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