Microchip Technology, Inc. IEEE 802.3af Type 1, PD front-end and PWM controller IC w/internal 0.6 Ohm FET PD70101

The PD70101 is an integrated Powered Device (PD) Interface and PWM controllers for a DC-DC converter used in IEEE 802.3af applications. The PD70101 can be used for IEEE 802.3af Type 1 applications. The device has several features designed to improve efficiency and reliability: Capacitor Gate drivers Peak current mode control Maximum duty cycle Soft-start circuit Low voltage protection warning and monitoring Start your PoE PD power supply design using Microchip MPLAB® Analog Designer. Additional Features IEEE 802.3af Type 1 compliant Less than 10 µA (typical) offset current during detection Signature resistor is disconnected upon detection Programmable classification setting with a single resistor Integrated 0.6 Ohm isolating MOSFET switch with inrush current limit Power off DC-DC input capacitor discharge 100 kHz to 500 kHz adjustable DC-DC switching frequency DC-DC frequency can be synchronized to external clock Supports low power mode operation for higher efficiency Up to 50% duty cycle Soft-start circuit to control the output voltage rise time Two out-of-phase driver stages for efficient synchronous rectification or active clamp PoE Port Input UVLO with programmable threshold and hysteresis Internal differential amplifier simplifying non-isolated step down converter Over load and short circuit protection 32-pin, 5mm × 5mm QFN MSL3, RoHS compliant