參數(shù)資料
型號: TPS23841PAPRG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源管理
英文描述: 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP64
封裝: GREEN, PLASTIC, QFP-64
文件頁數(shù): 7/48頁
文件大?。?/td> 1364K
代理商: TPS23841PAPRG4
www.ti.com
AM Classification
SLUS745A – NOVEMBER 2006 – REVISED MAY 2007
AUTO MODE FUNCTIONAL DESCRIPTION (continued)
After a successful discovery of a valid PD the TPS23841 enters the classification function that identifies the
power level based on the PD's current signature. The classification current level is measured at a reduced
terminal voltage of 17.5V. During classification the power dissipation can be at its highest; therefore, to prevent
over temperature shutdown in automode only one port classifies at a time. When multiple ports successfully
discover and proceed to classification at the same time the auto sequencer processes each request separately
allowing only one port to enter classification. Figure 3 shows all 4 ports successfully detecting a valid PD at the
same time and than the classification of each port occurring separately.
Figure 3.
15
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TPS23841PJDRG4 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP64
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