●DESCRIPTION
●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
