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PD70211 Datasheet(PDF) 9 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) 9 Page - Microsemi Corporation

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Copyright © 2016
Microsemi
Page 9
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
VCC
VCC
Dead time
+
-
Blanking
and
Limiting
offset
CLK
Clock
SYNC
RFREQ
+
-
offset
+
-
+
-
× 7
× 5
Differential
Current sense
amplifier
Differential
Voltage sense
amplifier
Pulse skip
Mode
Rskip
RCLP
Soft-start / Logic
Csoftstart
Enable
ENABLE
SS
12
17
15
16
18
FB
23
DAO
22
Differential
amp output
Vout_high
Vout_low
COMP
21
Rsense
Rupper
Rlower
Rupper
Rlower
PWM
logic
VREF
+
-
Vin
UVLO/PFW select
SYNC
DAO
VDD
VIN
VIN
Rfreq
VINS 13
HYST 14
VSN
VSP
CSP
CSN
29
28
20
19
SG
PG
26
30
Chip Supply
VAUX_VCC 32
5V drop
“High”
Internal Rail
VH
31
5V LDO
“Low”
Internal Rail
(VDD)
VL
25
VREF
(1.2V)
Decoupling
for VH rail
Decoupling
for VL
(VDD) rail
PD70211 (PWM section)
GND 24
PGND 27
POK
Figure 4: Block Diagram (PD70211 PWM section)



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