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PD70211 Datasheet(PDF) 8 Page - Microsemi Corporation

Part # PD70211
Description  PD Controller with Switching Regulator for AF/AT/UPOE/HDBaseT/4-pair PoE Applications
PDF  30 Pages
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Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

PD70211 Datasheet(HTML) 8 Page - Microsemi Corporation

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Copyright © 2016
Microsemi
Page 8
Rev. 1.4, July 2017
CPG
– PoE BU
One Enterprise Aliso Viejo, CA 92656 USA
PD70211
PD Controller with Switching Regulator for
AF/AT/UPOE/HDBaseT/4-pair PoE Applications
Functional Block Diagram
RDET
RCLS
VPP
SUPP_S1
SUPP_S2
VPN_IN
WA_EN
4P_AT_FLAG
HD_FLAG
AT_FLAG
4P_HD_FLAG
VPN_OUT
Enhanced
Classification
Block
Startup/
Inrush control
VAUX_VCC
10.5V
regulator
4.8V
regulator
Vdd
45mA
1.2V
Bandgap
Bleeder
control
Detection
control
RREF
Iclass
Class
control
+48V
48VRTN
Rsense
RCLASS
RDET
RREF
80ms delay
timer
VPP UVLO
Figure 3: Block Diagram (PD70211 front-end section)



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