ИС переключателя электропитания – электросеть/лок. сеть TPS23750PWP

POE контроллер , 67В вход, 1А выход, 39.3В блокировка по недостаточному напряжению, 487кГц, HTSSOP-20

The TPS23750PWP is an Integrated IEEE 802.3af PD Controller 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 PoE front end has all the necessary IEEE 802.3af functions including detection, classification, under-voltage lockout and inrush control. The PoE input switch is integrated within the TPS23750. The DC/DC controller section is designed to support flyback, forward and non-synchronous low-side switch buck topologies. The external switching MOSFET and current sense resistor provide flexibility in topology, power level and current limit. The full-featured DC/DC controller includes programmable soft start, hiccup type fault limiting, 50% maximum duty cycle, programmable constant switching frequency and a true voltage-output error amplifier. Additional protection features provide for robust designs.

• Complete 802.3af PoE interface
• 100V, 0.6R Internal pass MOSFET
• Standard and legacy UVLO choices
• Fixed 140mA 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
• Green product and no Sb/Br

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