产品描述:
PD70201是一款集成电源设备(PD)接口和PWM控制器,用于IEEE 802.3at Type 2应用中的DC-DC转换器。PD70201可用于IEEE 802.3af和IEEE 802.3at应用。单个PD70201可用于高达47.7W的4对应用。该设备具有几个旨在提高效率和可靠性的功能:
·检测和分类
·电容器
·大门驱动因素
·峰值电流模式控制
·占空比
·软启动电路
·低压保护警告和监控
产品特性:
- IEEE802.3atType2compliant
- Supportfor4-pairapplicationsofupto48WwithasingleIC
- 两个事件分类标志
- LessThan10µA(typical)offsetcurrentduringdetection
- 信号串口断开检测
- Programmableclassificationsettingwithasingleresistor
- Integrated0.6OhmisolatingMOSFETswitchwithinrushcurrentlimit
- 直流-直流电容或放电电源
- 100kHzto500kHzadjustableDC-DCswitchingfrequency
- DC-DCfrequencycanbesynchronizedtoexternalclock
- Supportslowpowermodeoperationforhigherefficiency
- 高达50%的占空比
- Soft-startcircuittocontroltheoutputvoltagerisetime
- Twoout-of-phasedriverstagesforefficientsynchronousrectificationoractiveclamp
- PoEportinputUVLOwithprogrammablethresholdandhysteresis
- Internaldifferentialamplifiersimplifyingnon-isolatedstepdownconverter