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ADP1031ACPZ-5-R7 Datasheet(PDF) 23 Page - Analog Devices

Part # ADP1031ACPZ-5-R7
Description  Three-Channel, Isolated Micropower Management Unit with Seven Digital Isolators
PDF  38 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP1031ACPZ-5-R7 Datasheet(HTML) 23 Page - Analog Devices

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Data Sheet
ADP1031
Rev. A | Page 23 of 38
THEORY OF OPERATION
The ADP1031 is a high performance, isolated micro PMU that
combines an isolated flyback regulator, an inverting regulator,
and a buck regulator, providing three isolated power rails.
Additionally, the ADP1031 includes seven low power digital
isolators in a 41-lead LFCSP package for channel to channel
isolated applications where power dissipation and board space
are at a premium.
VOUT1
VOUT2
VOUT3
MVDD
C1
SVDD2
VINP
SW2
FB1
VOUT1
VOUT2
SYNC
SW3
FB3
PGNDP
VINP
SLEW
PWRGD
SWP
L1
VOUT3
CIN
CFLYBK
CBUCK
CINV
GNDP
SGND1
MVDD
MGPO3
SGPI3
MGPI2
MGPI1
SGPO2
SGPO1
MGND
Tx1
SVDD1
SVDD2
L2
D1
RFT1
RFB1
C3
C4
RFB3
RFT3
SVDD1
EN
PWRGD
PG1
PG2
PG3
R6
R5
1:1
FEEDBACK AND
OVER VOLTAGE
CONTROL
INVERTING
SWITCHING
REGULATOR
FLYBACK
CONTROLLER
PLL
÷2
HIGH
EFFICIENCY
BUCK
MGND
DECODE
ENCODE
ENCODE
DECODE
ENCODE
DECODE
ENCODE
DECODE
MSS
MCK
MO
MI
SSS
SCK
SI
SO
CONTROL
BLOCK
CONTROL
BLOCK
SGND2
÷2
NOTES
1. CFLYBK IS THE FLYBACK REGULATOR OUTPUT CAPACITOR VALUE.
2. CBUCK IS THE BUCK REGULATOR OUTPUT CAPACITOR VALUE.
3. CINV IS THE INVERTING REGULATOR OUTPUT CAPACITOR VALUE.
Figure 64. Simplified Block Diagram



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