PM8803:High efficiency integrated IEEE 802.3at PoE-PD interface and PWM controller type 2 PSE indicator, plus support for forward active clamp topology

The PM8803 integrates a Power over Ethernet (PoE) interface and a current mode PWM controller to simplify the design of the power supply sections of all powered devices. The PoE/PoE+ interface includes all functions required by the IEEE 802.3at as well as detection, classification, undervoltage lockout (UVLO) and inrush current limitation.

The PM8803 specifically performs IEEE802.3at Layer 1 hardware classification, providing the system with an indication of Type 2 PSE successful detection.

The PM8803 has been designed to work with power either from the Ethernet cable or from an external power source such as a wall adapter, ensuring the priority of the auxiliary source over the PoE. The DC-DC section of the PM8803 features a programmable oscillator frequency, an adjustable slope compensation, dual complementary low-side drivers, programmable dead time and an internal temperature sensor.

The PM8803 targets high-efficiency conversion under all load conditions supporting flyback, forward, forward with active clamp converters and synchronous rectification.

Key Features

  • IEEE 802.3at compliant PD interface
  • Works with power supplied from Ethernet LAN cables or from local auxiliary sources
  • Successful IEEE802.3at Layer1 classification indicator
  • Integrated 100 V, 0.45 Ω, 1 A hot-swap MOSFET
  • Accurate 140 mA typ. inrush current level
  • Programmable classification current
  • Programmable DC current limit up to 1 A
  • Integrated high voltage start-up bias regulator
  • Thermal shutdown protection
  • Current mode pulse width modulator
  • Programmable oscillator frequency
  • 80% maximum duty cycle with internal slope compensation
  • Support for flyback, forward, forward active clamp, flyback with synchronous rectification
产品规格
DescriptionVersionSize
DS7139: High-efficiency, IEEE 802.3at compliant integrated PoE-PD interface and PWM controller3.01 MB
应用手册
DescriptionVersionSize
AN4006: Designing a high-efficiency (60 W on 4 pairs) PoE converter using the PM8803 and an external current booster1.03 MB
AN3373: IEEE802.3at compliant PD + PS design based on PM8803 low power, synchronous flyback PoE converter1.01 MB
AN3387: PM8803 layout guidelines1.0944 KB
AN4473: PoE synchronous flyback, IEEE802.3at compliant, 5V - 4A PD converter based on the PM8803 controller1.12 MB
宣传册
DescriptionVersionSize
PM8803: Integrated PoE+ PD interface and PWM controller3.1216 KB
手册
DescriptionVersionSize
Brochure Power management guide05.20167 MB
解决方案评估工具
型号制造商Description
STEVAL-TSP004V2STPoE 5 V - 4 A PD converter based on the PM8803 IEEE802.3at compliant synchronous flyback controller
STEVAL-TSP009V2STPoE 3.3 V - 6 A PD converter based on the PM8803 IEEE802.3at-compliant, synchronous flyback controller
样片和购买
型号PackagePacking TypeUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
PM8803TRHTSSOP20Tape And Reel--NECEAR99MALAYSIA
PM8803HTSSOP20Tube--NECEAR99MALAYSIA
质量和可靠性
型号PackageGradeRoHS Compliance GradeMaterial Declaration**
PM8803TRHTSSOP20IndustrialEcopack2md_yp-wspc-htssop-wspc-20-wspc-4.4-wspc-pitch-wspc-0.65-wspc-expad_a5ypua32ae5-wspc-(pm8803)_a_ver2_signed.pdf
md_yp-wspc-htssop-wspc-20-wspc-4.4-wspc-pitch-wspc-0.65-wspc-expad_a5ypua32ae5-wspc-(pm8803)_a_ver2.xml
PM8803HTSSOP20IndustrialEcopack2md_yp-wspc-htssop-wspc-20-wspc-4.4-wspc-pitch-wspc-0.65-wspc-expad_a5ypua32ae5-wspc-(pm8803)_a_ver2_signed.pdf
md_yp-wspc-htssop-wspc-20-wspc-4.4-wspc-pitch-wspc-0.65-wspc-expad_a5ypua32ae5-wspc-(pm8803)_a_ver2.xml
High-efficiency, IEEE 802.3at compliant integrated PoE-PD interface and PWM controller PM8803
Designing a high-efficiency (60 W on 4 pairs) PoE converter using the PM8803 and an external current booster PM8803
IEEE802.3at compliant PD + PS design based on PM8803 low power, synchronous flyback PoE converter PM8800
PM8803 layout guidelines PM8800
PoE synchronous flyback, IEEE802.3at compliant, 5V - 4A PD converter based on the PM8803 controller STEVAL-TSP004V2
Power over Ethernet-PD converter with 3.3 V, 3 A output, standard IEEE 802.3af compliant PM8800
Very low drop voltage regulators with inhibit KFXX
md_yp-wspc-htssop-wspc-20-wspc-4.4-wspc-pitch-wspc-0.65-wspc-expad_a5ypua32ae5-wspc-(pm8803)_a_ver2_signed.pdf PM8803
md_yp-wspc-htssop-wspc-20-wspc-4.4-wspc-pitch-wspc-0.65-wspc-expad_a5ypua32ae5-wspc-(pm8803)_a_ver2.xml PM8803