成人国产综合一区二区在线观看_精品亚洲Ⅴa在线无码播放_91夜色app在线下载_高清综合欧美亚洲_免费黄色视频app_JAPANESE少妇出轨内射_免费+无码+国产_日本va中文字幕波多野结衣_欧美一级人与禽亚洲精品_日韩欧美精品一区二区在线观看

Product Descriptions

The TPS23754 and TPS23756 devices have a combined power-over-ethernet (PoE), powereddevice (PD) interface, and current-mode DC-DC controller optimized specifically for isolated converters. The PoE interface supports the IEEE 802.3at standard.

The TPS23754 and TPS23756 support a number of input voltage ORing options including highest voltage, external adapter preference, and PoE preference. These features allow the designer to determine which power source will carry the load under all conditions.

The PoE interface features the new extended hardware classification necessary for compatibility with high-power midspan power sourcing equipment (PSE) per IEEE 802.3at. The detection signature pin can also be used to force power from the PoE source off. Classification can be programmed to any of the defined types with a single resistor.

The DC-DC controller features two complementary gate drivers with programmable dead time. This simplifies the design of active-clamp forward converters or optimized gate drive for highly-efficient flyback topologies. The second gate driver may be disabled if desired for single MOSFET topologies. The controller also features internal soft start, bootstrap start-up source, current-mode compensation, and a 78% maximum duty cycle. A programmable and synchronizable oscillator allows design optimization for efficiency and eases use of the controller to upgrade existing power supply designs. Accurate programmable blanking, with a default period, simplifies the usual current-sense filter design trade-offs.

The TPS23754 device has a 15-V converter start-up while the TPS23756 device has a 9-V converter startup. The TPS23754-1 replaces the PPD pin with a noconnect for increased pin spacing.

Product Features

? Powers up to 30-W (Input) PDs

? DC-DC Control Optimized for Isolated Converters

? Supports High-Efficiency Topologies

? Complete PoE Interface

? Enhanced Classification per IEEE 802.3at With Status Flag

? Adapter ORing Support

? Programmable Frequency With Synchronization

? Robust 100-V, 0.5-? Hotswap MOSFET

? –40°C to 125°C Junction Temperature Range

? Industry Standard PowerPAD? HTSSOP-20

Product Applications

? IEEE 802.3at Compliant Devices

? Video and VoIP Telephones

? RFID Readers

? Multiband Access Points

? Security Cameras

Specifications

Actual product photos

Payment&Transportation

Official Certificate&Certificate

Multiple product supply

Company office environment

Warehouse Real Shot

Standard packaging

We also provide ：