5V/20A, active clamp forward converter, Power Over Ethernet (PoE) - IEEE 802.3bt compliant reference design

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1 - 2$150.680%
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Parameter NameParameter Value
Target ApplicationAC-DC Topologies
Core ProductPM8804, PM8805
Packing TypeNot Applicable
ROHS Compliance GradeEcopack2
Package NameCARD
Key features
  • Features of PM8805 PoE-PD interface
    • System in package integrating a double active bridge, hot-swap MOSFET and PoE-PD interface
    • PoE-PD single-signature interface compliant with IEEE 802.3bt
    • Detection and support of high power 4-pair applications
    • 100 V N-Ch MOSFETs with 0.2 Ω total path resistance for each active bridge
    • Identifies which kind of PSE (standard or legacy) it is connected to and provides successful classification indication through a combination of the T0, T1 and T2 signals (open drain)
    • VFQFPN43 8x8 mm with 6 exposed pads
  • Features of PM8804 PWM controller
    • PWM peak current mode controller
    • Input operating voltage up to 75 V
    • Internal high voltage start up regulator with 20 mA capability
    • Programmable fixed frequency up to 1 MHz
    • Soft start up with settable time
    • Soft turn off (optionally disabled)
    • Dual 1Apk, low side complementary gate drivers
    • GATE2 optionally turned off for reduced consumption
    • 80% maximum duty cycle with internal slope compensation
    • VFQFPN 3.0x3.0x1.0 16L 0.5 mm pitch
  • WEEE compliant
  • RoHS compliant