TPS23770PWPRG4

结合100 -V型IEEE 802.3af PD和DC / DC控制器 INTEGRATED 100-V IEEE 802.3af PD AND DC/DC CONTROLLER

DESCRIPON

The TPS23750 integrates the functionality of the TPS2375 with a primary-side dc/dc PWM controller.

The designer can create a front-end solution for PoE-PD applications with minimum external components. The TPS23770 is identical to the TPS23750 with the exception of the undervoltage lockout turn-on voltage, which is compatible with legacy systems.

FEATURES

• Complete 802.3af PoE Interface

– Features derived from the TPS2375

– 100 V, 0.6 Ω Internal Pass MOSFET

– Standard and Legacy UVLO Choices

– Fixed 140 mA Inrush Limit

• Primary Side DC/DC Converter Control

– Minimum External Component Count

– Current Mode Control

– Isolated and Non-Isolated Topologies

– Programmable Operating Frequency

– Current Sense Leading-edge Blanking

– 50% Duty Cycle Limiting

– Voltage Output Error Amplifier

• Internal PoE and Converter Sequencing

• Industry-Standard 20 Lead Package

• Industrial Temperature Range: –40°C to 85°C

APPLICATIONS

• All PoE PD Devices Including:

– Wireless Access Points

– VoIP Phones

– Security Cameras