LM5072
- PD Interface
- Fully Compliant IEEE 802.3af PD Interface
- Versatile Auxiliary Power Options
- 9V Minimum Auxiliary Power Operating Range
- 100V Maximum Input Voltage Rating
- Programmable DC Current Limit Up To 800mA
- 100V, 0.7Ω Hot Swap MOSFET
- Integrated PD Signature Resistor
- Integrated PoE Input UVLO
- Programmable Inrush Current Limit
- PD Classification Capability
- Power Good Indicator
- Thermal Shutdown Protection
- PWM Controller
- Current Mode PWM Controller
- 100V Start-Up Regulator
- Error Amplifier with 2% Voltage Reference
- Supports Isolated and Non-Isolated Applications
- Programmable Oscillator Frequency
- Programmable Soft-Start
- 800 mA Peak Gate Driver
- 80% Maximum Duty Cycle with Built-in Slope Compensation (-80 Device)
- 50% Maximum Duty Cycle, No Slope Compensation (-50 Device)
Package
- TSSOP-16 EP (Exposed Pad)
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The LM5072 Powered Device (PD) interface and Pulse-Width-Modulation (PWM) controller provides a complete power solution, fully compliant to IEEE 802.3af, for the PD connecting into Power over Ethernet (PoE) networks. This controller integrates all functions necessary to implement both a PD powered interface and DC-DC converter with a minimum number of external components. The LM5072 provides the flexibility for the PD to also accept power from auxiliary sources such as AC adapters in a variety of configurations. The low RDS(ON) PD interface hot swap MOSFET and programmable DC current limit extend the range of LM5072 applications up to twice the power level of 802.3af compliant PD devices. The 100V maximum voltage rating simplifies selection of the transient voltage suppressor that protects the PD from network transients. The LM5072 includes an easy-to-use PWM controller that facilitates the various single-ended power supply topologies including the flyback, forward and buck. The PWM control scheme is based on peak current mode control, which provides inherent advantages including line feed-forward, cycle-by-cycle current limit, and simplified feedback loop compensation. Two versions of the LM5072 provide either an 80% maximum duty cycle (-80 suffix), or a 50% maximum duty cycle (-50 suffix).
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM5072 Integrated 100V Pwr Over Ethernet PD Interface & PWM Cntrl w/Aux Support datasheet (Rev. D) | 2013年 3月 29日 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| EVM User's guide | AN-1430 LM5071 Evaluation Board (Rev. B) | 2013年 5月 6日 | ||
| EVM User's guide | AN-1455 LM5072 Evaluation Board (Rev. A) | 2013年 5月 6日 | ||
| User guide | AN-1521 POEPHYTEREV-I / -E User Guide (Rev. C) | 2013年 4月 26日 | ||
| User guide | LM5072 12Vout 25W PoE PD Power Eval-Board for IP Camera User Guide | 2012年 1月 27日 | ||
| User guide | LM5072 5V out 25W IEEE 802.3at Compliant POE+ PD Power Ref Design User Guide | 2012年 1月 27日 |
設計與開發
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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
| 封裝 | 引腳 | 下載 |
|---|---|---|
| HTSSOP (PWP) | 16 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點
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