Exar XRP7720EVB-DEMO-1 User manual

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January 2014
Rev. 2.0.0
Exar Corporation www.exar.com
48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 – Fax. +1 510 668-7001
GENERAL DESCRIPTION
The XRP7720/7724/7725EVB-DEMO-1 board is
a complete, four channel, power system. It
provides 3.3V, 2.5V 1.5V and 1V at a
maximum of 3A, 3A, 5A and 10A loads
respectively. The 1.5V and 1V supplies can be
adjusted in 2.5mV increments, the 2.5V
supply in 5mV increments, and the 3.3V
supply is adjustable in 10mV increments. The
order and ramp rates for each supply can be
programmed to accommodate any sequencing
requirement. All power supply operations can
be controlled over an I2C interface. Faults,
output voltages and currents can also be
monitored. Two GPIO and three PSIO signals
are available and can be programmed to
provide a variety of functions. Unused
GPIO/PSIO pins can be programmed as I/O
expansion for a microcontroller. The board is
supported by PowerArchitectTM 5.1 and plugs
directly onto the Exar Communications Module
(XRP77xxEVB-XCM).
E
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XRP7724EVB-DEMO-1
FEATURES
•XRP7720/XRP7724/XRP7725
Programmable Controller
•4 Channel Power System
•Wide Input Voltage Range: 5.5V-18V
•I2C Interface
−Programming
−Monitoring
−Control

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January 2014
Rev. 2.0.0
Exar Corporation www.exar.com
48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 – Fax. +1 510 668-7001
EVALUATION BOARD SCHEMATICS
GND
ENABLE_IC
AVDD
V5EXT
LDO5
LDO3V3
CPLL
VIN
GND
AVDD
GND
GND
LDO5
GND
LDO3V3
GND
GND
BST4
LX4
GL4
BST1
GH1
LX1
GL1
CH1_OUT
GND
VCCD
16V
4.7UF
0805
C24
GND
GND
BST2
GH2
LX2
GL2
CH2_OUT
BST3
GH3
LX3
GL3
CH3_OUT
GND
GND
GND
GND
VCCD
16V
2.2UF
0805
C38
GND
VOUT4_VP P
50V
2200pF
0603
C26
GND
35V
10UF
1210
C32
PS2
PS1
T10
DNS
0603
R4
DNS
0603
R3
PS1
PS2
GND
ENABLE DNS
0603
R13
GND
PS3
PS3
DNS
0603
R2
SDA
SCL
ENABLE VIN
GND
LDO5
T8
GPI O2
GPI O1
GND
T13
PS3PS2
PS1
VPP
1 2
3 4
J2
Header 2X2
1 2
3 4
5 6
7 8
910
J3
Header 5X2
VPP
CH4_OUT
1
2
3
JP1
LDO5
GND
DNS
0603
R6
DNS
0603
R5
GND GND
SDA
SCL
GPI O1
GPI O2
DNS
0603
R10
DNS
0603
R9
35V
10UF
1210
C13
744314490
4.9uH
L1
DNS
0805
R28
DNS
0603
C46
CH1_OUT
T1
VIN
6
8
5
7
1
2
3
4
Q1
FDMC8200
BST1 LX1
VIN
35V
10UF
1210
C45
GND
GL1
GH1
7443551130
1.3uH
L4
DNS
0805
R37
DNS
0603
C49
CH4_OUT
T4
DNS
0603
R14
DNS
0603
R15
VIN
LX4
BST4
GH4
GL4
50V
0.1UF
0603
C19
35V
10UF
1210
C14
DNS
0603
R23
6.3V
47uF
1210
C2
DNS
0805
R29
DNS
0603
C47
CH2_OUT
T2
VIN
744314330
3.3uH
L2
6
8
5
7
1
2
3
4
Q2
FDMC8200
VOUT2
GH2
GL2
LX2BST2
VCCD
SDA
SCL
ENABLE
GND
GND
T9
GND
VPP
1 2
3 4
P6
Header 2X2
1 2
3 4
5 6
P5
Header 3X2
1 2
3 4
5 6
7 8
910
P7
Header 5X2
1
2
P1
1888687
1
2
P4
1888687
1
2
P2
1888687
1
2
P10
1888687
GH4
T12
1.0V 10A
2.5V 3A
3.3V- 5. 0V 3A
G
D
S
4
SL1 , SL2 ,MB
SIR474DP
1,2,3
Q6
G
D
S
4
SL1 , SL2 ,MB
FDMS7560S
1,2,3
Q5
VOUT4_VP P
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
P9
Header 15
PS1
PS2
PS3
GPI O1
GPI O2
GND
DNS
0603
R8
DNS
0603
R7
35V
10UF
1210
C20
744314200
2.0uH
L3
6.3V
100uF
1210
C3
DNS
0805
R31
DNS
0603
C48
CH3_OUT
T3
FDMC8882
G
D
S
4
5,6,7,81,2,3
Q4
FDMC7660
G
D
S
4
5,6,7,81,2,3
Q3
VIN
LX3
BST3
GH3
GL3 1
2
P3
1888687
1.5V 5A
T6 T11
GND GND
CH1_OUT DNS
0603
R1 V5EXT
T16
GND
PGND1 39
GL1 38
LX1 37
GH1 36
BST1 35
VIN 41
DGND
17
LDO5
44
V5EXT
43
AVDD
4
SDA
11
SCL
12
GPI O1
9
GPI O2
10
PS1
13
PS2
14
ENABLE
40
VOUT1 5
PGND2 33
GL2 32
LX2 31
GH2 30
BST2 29
VOUT2 6
PGND3 28
GL3 27
LX3 26
GH3 25
BST3 24
VOUT3 7
PGND4 22
GL4 21
LX4 20
GH4 19
BST4 18
VOUT4 8
VCCD1 - 2 34
DVDD
16
AGND
2
AGND/ EXPOS ED P AD
45
LDO3.3
1
CPLL
3
BFB
42
PS3
15
VCCD3 - 4 23
U1
SDA
SCL
GND
LDO5
LDO3V3
AVDD
2
3
1
P11
LDO5
LDO3V3
1 2
3 4
5 6
J1
Header 3X2
GND
T7
EX1
EX2
EX3
EX4
EX5
EX1
EX2
EX3
EX4EX5
DNS
1206
R42
DNS
1206
R40
DNS
1206
R32
DNS
1206
R33
DNS
1206
R34
GPI O1
GPI O2
PS1
PS2
PS3
DNS
0603
R22
DNS
0603
R35 VCCD
GND
DNS
0603
R21
DNS
0603
R20
DNS
0603
R25
DNS
0603
R24
DNS
0603
R27
DNS
0603
R26
4.7K
0603
R16
4.7K
0603
R17
LDO5
DNS
0603
C36
GND
SDA
SCL
DNS
0603
R19
DNS
0603
R18
VOUT1
VOUT3
VOUT4
GPI O2
GPI O1IO2
IO3
IO4 ENABLE
DNS
0603
R45
DNS
0603
R43
DNS
0603
R44
GND
VIN
IO2
IO3
IO4
SCL
SDA
GND
4
GND
5
VIN
6
A3
10
A4
11
A5
12
D2
15
D3
16
D4
17
D13
26
GND
27
AREF
28
P8
DNS
ENABLE_IC
T14
T15
DNS
0603
R38
DNS
0603
R36
DNS
0603
R39
DNS
0603
R41
T5
DNS
0603
R30
6.3V
47uF
1210
C6
6.3V
47uF
1210
C1
6.3V
47uF
1210
C5
35V
10UF
1210
C30
35V
10UF
1210
C31
6.3V
100uF
1210
C7
6.3V
100uF
1210
C4
6.3V
100uF
1210
C11
6.3V
100uF
1210
C12
6.3V
100uF
1210
C15
50V
1UF
0805
C10
50V
1UF
0805
C9
50V
1UF
0805
C8
50V
1UF
0805
C16
50V
0.01UF
0603
C27
50V
0.01UF
0603
C40
50V
0.01UF
0603
C29
50V
0.01UF
0603
C28
50V
0.01UF
0603
C34
50V
0.01UF
0603
C35
50V
0.01UF
0603
C23
50V
0.01UF
0603
C17 16V
4.7UF
0805
C18
16V
4.7UF
0805
C37
16V
4.7UF
0805
C39
50V
0.1UF
0603
C21
50V
0.1UF
0603
C22
50V
0.1UF
0603
C25
50V
0.1UF
0603
C33 50V
0.1UF
0603
C41
50V
0.1UF
0603
C42
50V
0.1UF
0603
C44
50V
0.1UF
0603
C43
DNS
0603
R11
DNS
0603
R12
Figure 1: XRP7720 /7724/7725 Evaluation Board Schematics

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© 2014 Exar Corporation 3/16 Rev. 2.0.0
XRP7720-DEV PIN ASSIGNMENT
33
32
31
30
29
28
27
26
24
25
20
19
17
18
16
15
13
14
12
10
1
2
3
4
5
6
7
8
9
36
37
39
38
40
41
43
42
44
21
35
NC
AGND
NC
AVDD
VOUT1
VOUT2
VOUT4
GPIO0
GPIO1
GL2
LX2
GH2
BST2
GL_RTN3
GL3
LX3
GH3
BST3
VCCD3-4
SCL
PSIO1
PSIO2
DVDD
PSIO0
DGND
BST4
GH4
LX4
GL4
LDO5
5VEXT
NC
VCC
ENABLE
GL1
LX1
GH1
BST1
VCCD1-2
VOUT3
Exposed Pad: AGND
XRP7720-DEV
TQFN
7mm X 7mm
11
SDA
23
GL_RTN2
34
GL_RTN1
22
GL_RTN4
Figure 2: XRP7720-DEV Pin Assignment
XRP7720-DEV PIN DESCRIPTION
Name Pin Number Description
VCC 41 Input voltage. Place a decoupling capacitor close to the pin. This input is used in UVLO
fault generation.
DVDD 16 1.8V supply for digital circuitry. Connect pin to AVDD. Place a decoupling capacitor
close to the pin.
VCCD1-2
VCCD3-4 23,34
Gate Drive supply. Two independent gate drive supply pins where pin 34 supplies
drivers 1 and 2 and pin 23 supplies drivers 3 & 5. One of the two pins must be
connected to the LDO5 pin to enable two power rails initially. It is recommended that
the other VCCD pin be connected to the output of a 5V switching rail(for improved
efficiency or for driving larger external FETs), if available, otherwise this pin may also
be connected to the LDO5 pin. A bypass capacitor (>1uF) to PAD is recommended for
each VCCD pin with the pin(s) connected to LDO5 with shortest possible etch.
AGND
2 Analog ground pin. This is the small signal ground connection.

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© 2014 Exar Corporation 4/16 Rev. 2.0.0
Name Pin Number Description
GL_RTN1-4 39,33, 28,22 Ground connection for the low side gate driver. This should be routed as a signal trace
with GL. Connect to the source of the low side MOSFET.
GL1-GL4 38,32, 27,21 Output pin of the low side gate driver. Connect directly to the gate of an external N-
channel MOSFET.
GH1-GH4 36,30, 25,19 Output pin of the high side gate driver. Connect directly to the gate of an external N-
channel MOSFET.
LX1-LX4 37,31, 26,20
Lower supply rail for the GH high-side gate driver. Connect this pin to the switching
node at the junction between the two external power MOSFETs and the inductor. These
pins are also used to measure voltage drop across bottom MOSFETs in order to provide
output current information to the control engine.
BST1-BST4 35,29, 24,18
High side driver supply pin(s). Connect BST to the external capacitor as shown in the
Typical Application Circuit on page 5. The high side driver is connected between the
BST pin and LX pin and delivers the BST pin voltage to the high side FET gate each
cycle.
GPI0-GPIO1 9,10 These pins can be configured as inputs or outputs to implement custom flags, power
good signals, enable/disable controls and synchronization to an external clock.
PSIO0-PSIO2 13,14,15
Open drain, these pins can be used to control external power MOSFETs to switch loads
on and off, shedding the load for fine grained power management. They can also be
configures as standard logic outputs or inputs just as any of the GPIOs can be
configured, but as open drains require an external pull-up when configured as outputs.
SDA, SCL 11,12 SMBus/I2C serial interface communication pins. These pins can be configured open
drain or pseudo-TTL requiring a pull-up resistor.
VOUT1-VOUT4 5,6,7,8 Connect to the output of the corresponding power stage. The output is sampled at least
once every switching cycle
LDO5 44
Output of a 5V LDO. This is a micro power LDO that can remain active while the rest of
the IC is in the stand-by mode. This LDO is also used to power the internal Analog
Blocks.
ENABLE 40
If ENABLE is pulled high or allowed to float high, the chip is powered up (logic is reset,
registers configuration loaded, etc.). The pin must be held low for the XRP7724 to be
placed into shutdown. Active channels will automatically be ramped down, if desired,
prior to the disabling of the chip.
DGND 17 Digital ground pin. This is the logic ground connection, and should be connected to the
ground plane close to the PAD.
NC 1,3,42 No Connect

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WM
M/
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PF
FM
M
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mo
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B
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© 2014 Exar Corporation 5/16 Rev. 2.0.0
XRP7724/XRP7725 PIN ASSIGNMENT
33
32
31
30
29
28
27
26
24
25
20
19
17
18
16
15
13
14
12
10
1
2
3
4
5
6
7
8
9
36
37
39
38
40
41
43
42
44
21
35
LDO3_3
AGND
CPLL
AVDD
VOUT1
VOUT2
VOUT4
GPIO0
GPIO1
GL2
LX2
GH2
BST2
GL_RTN3
GL3
LX3
GH3
BST3
VCCD3-4
SCL
PSIO1
PSIO2
DVDD
PSIO0
DGND
BST4
GH4
LX4
GL4
LDO5
5VEXT
BFB
VCC
ENABLE
GL1
LX1
GH1
BST1
VCCD1-2
VOUT3
Exposed Pad: AGND
XRP7724/XRP7725
TQFN
7mm X 7mm
11
SDA
23
GL_RTN2
34
GL_RTN1
22
GL_RTN4
Figure 3: XRP7724/XRP7725 Pin Assignment
XRP7724/XRP7725 PIN DESCRIPTION
Name Pin Number Description
VCC 41 Input voltage. Place a decoupling capacitor close to the pin. This input is used in UVLO
fault generation.
DVDD 16 1.8V supply for digital circuitry. Connect pin to AVDD. Place a decoupling capacitor
close to the pin.
VCCD1-2
VCCD3-4 23,34
Gate Drive supply. Two independent gate drive supply pins where pin 34 supplies
drivers 1 and 2 and pin 23 supplies drivers 3 & 5. One of the two pins must be
connected to the LDO5 pin to enable two power rails initially. It is recommended that
the other VCCD pin be connected to the output of a 5V switching rail(for improved
efficiency or for driving larger external FETs), if available, otherwise this pin may also
be connected to the LDO5 pin. A bypass capacitor (>1uF) to PAD is recommended for
each VCCD pin with the pin(s) connected to LDO5 with shortest possible etch.
AGND 2 Analog ground pin. This is the small signal ground connection.
GL_RTN1-4 39,33, 28,22 Ground connection for the low side gate driver. This should be routed as a signal trace
with GL. Connect to the source of the low side MOSFET.

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1
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PW
WM
M/
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PF
FM
M
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© 2014 Exar Corporation 6/16 Rev. 2.0.0
Name Pin Number Description
GL1-GL4 38,32, 27,21 Output pin of the low side gate driver. Connect directly to the gate of an external N-
channel MOSFET.
GH1-GH4 36,30, 25,19 Output pin of the high side gate driver. Connect directly to the gate of an external N-
channel MOSFET.
LX1-LX4 37,31, 26,20
Lower supply rail for the GH high-side gate driver. Connect this pin to the switching
node at the junction between the two external power MOSFETs and the inductor. These
pins are also used to measure voltage drop across bottom MOSFETs in order to provide
output current information to the control engine.
BST1-BST4 35,29, 24,18
High side driver supply pin(s). Connect BST to the external capacitor as shown in the
Typical Application Circuit on page 5. The high side driver is connected between the
BST pin and LX pin and delivers the BST pin voltage to the high side FET gate each
cycle.
GPI0-GPIO1 9,10 These pins can be configured as inputs or outputs to implement custom flags, power
good signals, enable/disable controls and synchronization to an external clock.
PSIO0-PSIO2 13,14,15
Open drain, these pins can be used to control external power MOSFETs to switch loads
on and off, shedding the load for fine grained power management. They can also be
configures as standard logic outputs or inputs just as any of the GPIOs can be
configured, but as open drains require an external pull-up when configured as outputs.
SDA, SCL 11,12 SMBus/I2C serial interface communication pins. These pins can be configured open
drain or pseudo-TTL requiring a pull-up resistor.
VOUT1-VOUT4 5,6,7,8 Connect to the output of the corresponding power stage. The output is sampled at least
once every switching cycle
LDO5 44
Output of a 5V LDO. This is a micro power LDO that can remain active while the rest of
the IC is in the stand-by mode. This LDO is also used to power the internal Analog
Blocks.
LDO3_3 1 Output of the 3.3V standby LDO. This is a micro power LDO that can remain active
while the rest of the IC is in shutdown.
ENABLE 40
If ENABLE is pulled high or allowed to float high, the chip is powered up (logic is reset,
registers configuration loaded, etc.). The pin must be held low for the XRP7724 to be
placed into shutdown. Active channels will automatically be ramped down, if desired,
prior to the disabling of the chip.
BFB 42
Input from the 15V output created by the external boost supply. When this pin goes
below a pre-defined threshold, a pulse is created on the low side drive to charge this
output back to the original level. If not used, this pin should be connected to GND.
DGND 17 Digital ground pin. This is the logic ground connection, and should be connected to the
ground plane close to the PAD.
CPLL
3 PLL compensation capacitor
ORDERING INFORMATION
Refer to XRP7720/XRP7724/XRP7725 datasheets and/or www.exar.com for exact and up to date
ordering information.

X
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5E
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1
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PW
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M/
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PF
FM
M
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B
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P
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© 2014 Exar Corporation 7/16 Rev. 2.0.0
USING THE EVALUATION BOARD
INPUT VOLTAGE RANGE
The input voltage range of these boards is
from 5.5V to 18V. The power components
have been optimized for a 12V input rail.
When running the board at an input voltage
other than 12V, use PowerArchitectTM 5.1 to
evaluate the system performance.
I2CINTERFACE
The controller employs a standard I2C
interface. Pull-ups for the I2C signals are
included on the demo board.
OPERATING THE EVALUATION BOARD
The demo board is designed to be powered
from either an AC/DC wall wart (the output
voltage must be in the range of the controller
VCC specification – 5.5V to 18V) connected to
the barrel connector, or a test bench DC
power supply (the voltage must be in the
range of the controller VCC specification –
5.5V to 18V) connected to the Vin phoenix
connector (the positive side is indicated with
VIN text in silkscreen. The proper connection
is indicated in the evaluation board
connections section below).
BRING UP PROCEDURE
Plug the demo board to the XCM as shown
below.
Load the PowerArchitectTM 5.1 software and
run it.
After selecting the proper family (Chips) and
the device (XRP7720, XRP7724, or XRP7725),
select the “Get Started with the EVB-DEMO-1”
option when prompted as shown below.
When done, click “Create”. PowerArchitectTM
5.1 will load the default configuration
automatically.
Apply Power to the board. Please refer to the
sections above on how to properly supply
power to the board and what voltage range to
use.
Turn on the Power supply.
Insert the USB cable into the computer and
the XCM board.
Go to the Tools tab in PowerArchitectTM 5.1
and select Boards. The software will identify
communication ports where it found the XCM
board. Select the port.
PowerArchitectTM 5.1 is now communicating
with XCM which is indicated in the lower left
corner.

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XR
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72
20
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77
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24
4/
/7
77
72
25
5E
EV
VB
B-
-D
DE
EM
MO
O-
-
1
1
Q
Qu
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ad
d
C
Ch
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D
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P
PW
WM
M/
/P
PF
FM
M
D
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mo
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B
Bo
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© 2014 Exar Corporation 8/16 Rev. 2.0.0
Programming the Configuration onto
XRP7720-DEV/XRP7724/XRP7725
To program a configuration go to the Tools tab
in PowerArchitectTM 5.1 and select Program
Flash.
The program Flash window will appear.
Click the Flash button.
PowerArchitectTM 5.1 will go through the
process of loading configuration in the flash.
Once it has successfully completed the task, it
will report the outcome as seen above and
reset the device if “Automatically Reset After
Flashing” box checked (default option).
Close the window.
Note that the boards will be pre-loaded with
the default configuration.
Regulation
To enable channel regulation go to the Tools
tab in PowerArchitectTM 5.1 and select
Dashboard.
In Dashboard turn Group 1 and Group 2 on.
The configuration groups channel 1, channel 2,
and LDO3.3*into Group 1, and channels 3
and 4 into Group 2. The channels are now in
regulation as indicated by Vout readings as
well as the in-regulation indicators.
Note*: Not available in XRP7720EVB-DEMO-1

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1
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WM
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FM
M
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© 2014 Exar Corporation 9/16 Rev. 2.0.0
Channels can be turned on/off individually if
desired.
Note: Make sure there is a jumper shorting
JP1 pins 1 and 2 installed on your board.
Channel 4 will not regulate without it.
JP1 JUMPER
EVALUATION BOARD CONNECTIONS
The following picture illustrates how Vin
supplied from a test bench DC power supply
and instruments attached to the outputs would
be connected to the demo board.
GND1 OUT1 GND2 OUT2 GND3 OUT3 GND4 OUT4
GNDVIN
VIN BARREL
CONNECTOR

1
1
2
2
3
3
4
4
5
5
6
6
D D
C C
B B
A A
1
EXAR
48720 Kato Road
Fremont, CA 94538
www.exar.com
1
XRP7724EVB-DEMO-1
1.0
1/17/2013 3:02:06 PM
C:\XRP7724EVB-DEMO-1\Board\XRP7724.SchDoc
Title
Size: Name:
Date:
File:
Rev:
Sheet ofTime:
CXRP7724.SchDoc
GND
ENABLE_IC
AVDD
V5EXT
LDO5
LDO3V3
CPLL
VIN
GND
AVDD
GND
GND
LDO5
GND
LDO3V3
GND
GND
BST4
LX4
GL4
BST1
GH1
LX1
GL1
CH1_OUT
GNDVCCD
16V
4.7UF
0805
C24
GND
GND
BST2
GH2
LX2
GL2
CH2_OUT
BST3
GH3
LX3
GL3
CH3_OUT
GND
GND
GND
GND
VCCD
16V
2.2UF
0805
C38
GND
VOUT4_VPP
50V
2200pF
0603
C26
GND
35V
10UF
1210
C32
PS2
PS1
T10
DNS
0603
R4
DNS
0603
R3
PS1
PS2
GND
ENABLE DNS
0603
R13
GND
PS3
PS3
DNS
0603
R2
SDA
SCL
ENABLE VIN
GND
LDO5
T8
GPIO2
GPIO1
GND
T13
PS3PS2
PS1
VPP
1 2
3 4
J2
Header 2X2
1 2
3 4
5 6
7 8
910
J3
Header 5X2
VPP
CH4_OUT
1
2
3
JP1
LDO5
GND
DNS
0603
R6
DNS
0603
R5
GND GND
SDA
SCL
GPIO1
GPIO2
DNS
0603
R10
DNS
0603
R9
35V
10UF
1210
C13
744314490
4.9uH
L1
DNS
0805
R28
DNS
0603
C46
CH1_OUT
T1
VIN
6
8
5
7
1
2
3
4
Q1
FDMC8200
BST1 LX1
VIN
35V
10UF
1210
C45
GND
GL1
GH1
7443551130
1.3uH
L4
DNS
0805
R37
DNS
0603
C49
CH4_OUT
T4
DNS
0603
R14
DNS
0603
R15
VIN
LX4
BST4
GH4
GL4
50V
0.1UF
0603
C19
35V
10UF
1210
C14
DNS
0603
R23
6.3V
47uF
1210
C2
DNS
0805
R29
DNS
0603
C47
CH2_OUT
T2
VIN
744314330
3.3uH
L2
6
8
5
7
1
2
3
4
Q2
FDMC8200
VOUT2
GH2
GL2
LX2BST2
VCCD
SDA
SCL
ENABLE
GND
GND
T9
GND
VPP
1 2
3 4
P6
Header 2X2
1 2
3 4
5 6
P5
Header 3X2
1 2
3 4
5 6
7 8
910
P7
Header 5X2
1
2
P1
1888687
1
2
P4
1888687
1
2
P2
1888687
1
2
P10
1888687
GH4
T12
1.0V 10A
2.5V 3A
3.3V- 5.0V 3A
G
D
S
4
SL1,SL2,MB
SIR474DP
1,2,3
Q6
G
D
S
4
SL1,SL2,MB
FDMS7560S
1,2,3
Q5
VOUT4_VPP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
P9
Header 15
PS1
PS2
PS3
GPIO1
GPIO2
GND
DNS
0603
R8
DNS
0603
R7
35V
10UF
1210
C20
744314200
2.0uH
L3
6.3V
100uF
1210
C3
DNS
0805
R31
DNS
0603
C48
CH3_OUT
T3
FDMC8882
G
D
S
4
5,6,7,81,2,3
Q4
FDMC7660
G
D
S
4
5,6,7,81,2,3
Q3
VIN
LX3
BST3
GH3
GL3 1
2
P3
1888687
1.5V 5A
T6 T11
GND GND
CH1_OUT DNS
0603
R1 V5EXT
T16
GND
PGND1 39
GL1 38
LX1 37
GH1 36
BST1 35
VIN 41
DGND
17
LDO5
44
V5EXT
43
AVDD
4
SDA
11
SCL
12
GPIO1
9
GPIO2
10
PS1
13
PS2
14
ENABLE
40
VOUT1 5
PGND2 33
GL2 32
LX2 31
GH2 30
BST2 29
VOUT2 6
PGND3 28
GL3 27
LX3 26
GH3 25
BST3 24
VOUT3 7
PGND4 22
GL4 21
LX4 20
GH4 19
BST4 18
VOUT4 8
VCCD1-2 34
DVDD
16
AGND
2
AGND/EXPOSED PAD
45
LDO3.3
1
CPLL
3
BFB
42
PS3
15
VCCD3-4 23
U1
SDA
SCL
GND
LDO5
LDO3V3
AVDD
2
3
1
P11
LDO5
LDO3V3
1 2
3 4
5 6
J1
Header 3X2
GND
T7
EX1
EX2
EX3
EX4
EX5
EX1
EX2
EX3
EX4EX5
DNS
1206
R42
DNS
1206
R40
DNS
1206
R32
DNS
1206
R33
DNS
1206
R34
GPIO1
GPIO2
PS1
PS2
PS3
DNS
0603
R22
DNS
0603
R35 VCCD
GND
DNS
0603
R21
DNS
0603
R20
DNS
0603
R25
DNS
0603
R24
DNS
0603
R27
DNS
0603
R26
4.7K
0603
R16
4.7K
0603
R17
LDO5
DNS
0603
C36
GND
SDA
SCL
DNS
0603
R19
DNS
0603
R18
VOUT1
VOUT3
VOUT4
GPIO2
GPIO1IO2
IO3
IO4 ENABLE
DNS
0603
R45
DNS
0603
R43
DNS
0603
R44
GND
VIN
IO2
IO3
IO4
SCL
SDA
GND
4
GND
5
VIN
6
A3
10
A4
11
A5
12
D2
15
D3
16
D4
17
D13
26
GND
27
AREF
28
P8
DNS
ENABLE_IC
T14
T15
DNS
0603
R38
DNS
0603
R36
DNS
0603
R39
DNS
0603
R41
T5
DNS
0603
R30
6.3V
47uF
1210
C6
6.3V
47uF
1210
C1
6.3V
47uF
1210
C5
35V
10UF
1210
C30
35V
10UF
1210
C31
6.3V
100uF
1210
C7
6.3V
100uF
1210
C4
6.3V
100uF
1210
C11
6.3V
100uF
1210
C12
6.3V
100uF
1210
C15
50V
1UF
0805
C10
50V
1UF
0805
C9
50V
1UF
0805
C8
50V
1UF
0805
C16
50V
0.01UF
0603
C27
50V
0.01UF
0603
C40
50V
0.01UF
0603
C29
50V
0.01UF
0603
C28
50V
0.01UF
0603
C34
50V
0.01UF
0603
C35
50V
0.01UF
0603
C23
50V
0.01UF
0603
C17 16V
4.7UF
0805
C18
16V
4.7UF
0805
C37
16V
4.7UF
0805
C39
50V
0.1UF
0603
C21
50V
0.1UF
0603
C22
50V
0.1UF
0603
C25
50V
0.1UF
0603
C33 50V
0.1UF
0603
C41
50V
0.1UF
0603
C42
50V
0.1UF
0603 C44
50V
0.1UF
0603 C43
DNS
0603
R11
DNS
0603
R12
P0C101P0C102
P0C201P0C202
P0C301P0C302
P0C401P0C402
P0C501P0C502
P0C601P0C602
P0C701P0C702
P0C801P0C802
P0C901P0C902
P0C1001P0C1002
P0C1101P0C1102
P0C1201P0C1202
P0C1301P0C1302
P0C1401P0C1402
P0C1501P0C1502
P0C1601P0C1602
P0C1701P0C1702
P0C1801 P0C1802
P0C1901 P0C1902
P0C2001P0C2002
P0C2101 P0C2102
P0C2201 P0C2202
P0C2301P0C2302
P0C2401 P0C2402
P0C2501 P0C2502
P0C2601P0C2602
P0C2701P0C2702
P0C2801P0C2802
P0C2901P0C2902
P0C3001P0C3002
P0C3101P0C3102
P0C3201P0C3202
P0C3301P0C3302
P0C3401P0C3402
P0C3501P0C3502
P0C3601P0C3602
P0C3701P0C3702
P0C3801P0C3802
P0C3901P0C3902
P0C4001P0C4002
P0C4101 P0C4102
P0C4201 P0C4202
P0C4301 P0C4302
P0C4401 P0C4402
P0C4501P0C4502
P0C4601P0C4602
P0C4701P0C4702
P0C4801P0C4802
P0C4901P0C4902
P0J101 P0J102
P0J103 P0J104
P0J105 P0J106
P0J201 P0J202
P0J203 P0J204
P0J301 P0J302
P0J303 P0J304
P0J305 P0J306
P0J307 P0J308
P0J309 P0J3010
P0JP101
P0JP102
P0JP103
P0L101 P0L102
P0L201 P0L202
P0L301 P0L302
P0L401 P0L402
P0P101
P0P102
P0P201
P0P202
P0P301
P0P302
P0P401
P0P402
P0P501 P0P502
P0P503 P0P504
P0P505 P0P506
P0P601 P0P602
P0P603 P0P604
P0P701 P0P702
P0P703 P0P704
P0P705 P0P706
P0P707 P0P708
P0P709 P0P7010
P0P804
P0P805
P0P806
P0P8010
P0P8011
P0P8012
P0P8015
P0P8016
P0P8017
P0P8026
P0P8027
P0P8028
P0P901
P0P902
P0P903
P0P904
P0P905
P0P906
P0P907
P0P908
P0P909
P0P9010
P0P9011
P0P9012
P0P9013
P0P9014
P0P9015
P0P1001
P0P1002
P0P1101
P0P1102
P0P1103
P0Q101P0Q102P0Q103P0Q104
P0Q105
P0Q106
P0Q107
P0Q108
P0Q10MB1
P0Q10MB2
P0Q201P0Q202P0Q203P0Q204
P0Q205
P0Q206
P0Q207
P0Q208
P0Q20MB1
P0Q20MB2
P0Q301P0Q302P0Q303
P0Q304
P0Q30MB P0Q401P0Q402P0Q403
P0Q404
P0Q40MB
P0Q501P0Q502P0Q503
P0Q504
P0Q50MBP0Q50SL1P0Q50SL2 P0Q601P0Q602P0Q603
P0Q604
P0Q60MBP0Q60SL1P0Q60SL2
P0R101 P0R102
P0R201P0R202
P0R301P0R302
P0R401P0R402
P0R501P0R502
P0R601P0R602
P0R701 P0R702
P0R801 P0R802
P0R901 P0R902
P0R1001 P0R1002
P0R1101 P0R1102
P0R1201 P0R1202
P0R1301 P0R1302
P0R1401 P0R1402
P0R1501 P0R1502
P0R1601P0R1602
P0R1701P0R1702 P0R1801P0R1802
P0R1901P0R1902
P0R2001P0R2002 P0R2101P0R2102
P0R2201P0R2202 P0R2301P0R2302
P0R2401P0R2402 P0R2501P0R2502
P0R2601P0R2602 P0R2701P0R2702
P0R2801P0R2802
P0R2901P0R2902
P0R3001P0R3002
P0R3101P0R3102
P0R3201P0R3202
P0R3301P0R3302
P0R3401P0R3402
P0R3501 P0R3502
P0R3601 P0R3602
P0R3701P0R3702
P0R3801 P0R3802
P0R3901 P0R3902
P0R4001P0R4002
P0R4101 P0R4102
P0R4201P0R4202
P0R4301 P0R4302
P0R4401 P0R4402
P0R4501 P0R4502
P0T100
P0T200
P0T300
P0T400
P0T500
P0T600
P0T700
P0T800
P0T900
P0T1000
P0T1100
P0T1200
P0T1300
P0T1400
P0T1500
P0T1600
P0U101
P0U102
P0U103
P0U104
P0U105
P0U106
P0U107
P0U108
P0U109
P0U1010
P0U1011
P0U1012
P0U1013
P0U1014
P0U1015
P0U1016
P0U1017
P0U1018
P0U1019
P0U1020
P0U1021
P0U1022
P0U1023
P0U1024
P0U1025
P0U1026
P0U1027
P0U1028
P0U1029
P0U1030
P0U1031
P0U1032
P0U1033
P0U1034
P0U1035
P0U1036
P0U1037
P0U1038
P0U1039
P0U1040
P0U1041
P0U1042
P0U1043
P0U1044
P0U1045
P0C2901
P0C3901
P0C4001
P0P904
P0U104
P0U1016
N0AVDD
N0AVDD
N0AVDD
P0C2101
P0U1035 N0BST1
N0BST1
P0C1901
P0U1029 N0BST2
N0BST2
P0C2201
P0U1024 N0BST3
N0BST3
P0C2501
P0U1018 N0BST4
N0BST4
P0C101
P0C501
P0C801
P0C4101
P0L102
P0P101
P0R101
P0R2001 P0R2101P0R2102
P0T100
P0U105
N0CH10OUT
N0CH10OUT
N0CH10OUT
N0VOUT1
P0C201
P0C601
P0C901
P0C4201
P0L202
P0P201
P0R2201 P0R2301P0R2302
P0T200
P0U106 N0CH20OUT
N0CH20OUT
N0VOUT2
P0C301
P0C701
P0C1001
P0C4401
P0L302
P0P301
P0R2401 P0R2501P0R2502
P0T300
P0U107 N0CH30OUT
N0CH30OUT
N0VOUT3
P0C401
P0C1101
P0C1201
P0C1501
P0C1601
P0JP101
P0L402
P0P401
P0R2601 P0R2701P0R2702
P0T400
N0CH40OUT
N0CH40OUT
N0VOUT4
P0C3301
P0U103
N0CPLL
P0J309
P0P709
P0R1301
P0R4402 N0ENABLE
N0ENABLE
N0ENABLE
N0ENABLE
P0P9015
P0R1302 P0U1040
N0ENABLE0IC
N0ENABLE0IC
P0P704
P0R4201 N0EX1
N0EX1
P0P706
P0R4001 N0EX2
N0EX2
P0P504
P0R3201 N0EX3
N0EX3
P0P502
P0R3301 N0EX4
N0EX4
P0P501
P0R3401 N0EX5
N0EX5
P0Q101
P0R1001 P0R1002
P0U1036 N0GH1
N0GH1
P0Q201
P0R1201 P0R1202
P0U1030 N0GH2
N0GH2
P0Q404
P0R801 P0R802P0U1025 N0GH3 N0GH3
P0Q604
P0R1501 P0R1502
P0U1019 N0GH4
N0GH4
P0Q108
P0R901 P0R902
P0U1038 N0GL1
N0GL1
P0Q208
P0R1101 P0R1102
P0U1032 N0GL2
N0GL2
P0Q304
P0R701 P0R702
P0U1027 N0GL3
N0GL3
P0Q504
P0R1401 P0R1402
P0U1021 N0GL4
N0GL4
P0C102
P0C202
P0C302
P0C402
P0C502
P0C602
P0C702
P0C802
P0C902
P0C1002
P0C1102
P0C1202
P0C1302
P0C1402
P0C1502
P0C1602
P0C1702
P0C1802
P0C2002
P0C2302
P0C2402
P0C2602
P0C2802
P0C2902
P0C3002
P0C3102
P0C3202
P0C3302
P0C3402
P0C3502
P0C3602
P0C3702
P0C3802
P0C3902
P0C4002
P0C4102
P0C4202
P0C4302
P0C4402
P0C4502
P0C4602
P0C4702
P0C4802
P0C4902
P0J105
P0J202
P0J204
P0J302
P0J307 P0J308
P0P102
P0P202
P0P302
P0P402
P0P505
P0P602
P0P604
P0P702
P0P707 P0P708
P0P804
P0P805
P0P903
P0P905
P0P908
P0P9014
P0P1002
P0P1102
P0P1103
P0Q105
P0Q106
P0Q107
P0Q205
P0Q206
P0Q207
P0Q301P0Q302P0Q303
P0Q501P0Q502P0Q503
P0R502
P0R602
P0R2002
P0R2202
P0R2402
P0R2602
P0R3001P0R3002 P0T500
P0T600
P0T800
P0T1000
P0T1100
P0T1500
P0U102
P0U1017
P0U1022
P0U1028
P0U1033
P0U1039
P0U1042
P0U1045
P0J304
P0P906
P0R4202
P0R4502
P0U109
N0GPIO1
N0GPIO1
N0GPIO1
N0GPIO1
N0GPIO1
P0J306
P0P907
P0R4002
P0R4302
P0U1010
N0GPIO2
N0GPIO2
N0GPIO2
N0GPIO2
N0GPIO2
P0P8015
P0R4501
N0IO2
N0IO2
P0P8016
P0R4301
N0IO3 N0IO3
P0P8017
P0R4401
N0IO4
N0IO4
P0C3501
P0C3801
P0J203
P0P902
P0U101
N0LDO3V3
N0LDO3V3
N0LDO3V3
N0LDO3V3
P0C1701
P0C1801
P0C2301
P0C2401
P0C3401
P0C3701
P0J201
P0J305
P0P901
P0R201
P0R301
P0R401
P0R1601
P0R1701 P0R1801P0R1802
P0R1901P0R1902
P0R3501 P0R3502
P0T1300
P0U1023
P0U1034
P0U1044
N0LDO5
N0LDO5
N0LDO5
N0LDO5
N0LDO5
N0LDO5
N0LDO5
N0VCCD
N0VCCD
N0VCCD
N0VCCD
P0C2102
P0L101P0Q10MB1
P0R2801
P0R3801 P0R3802
P0U1037 N0LX1
N0LX1
P0C1902
P0L201P0Q20MB1
P0R2901
P0R3601 P0R3602
P0U1031 N0LX2
N0LX2
P0C2202 P0L301
P0Q30MB P0Q401P0Q402P0Q403
P0R3101
P0R3901 P0R3902
P0U1026 N0LX3
N0LX3
P0C2502
P0L401
P0Q50MBP0Q50SL1P0Q50SL2 P0Q601P0Q602P0Q603
P0R3701
P0R4101 P0R4102
P0U1020 N0LX4
N0LX4
P0C2702
P0C4601 P0R2802
P0C4701P0R2902
P0C4801 P0R3102
P0C4901 P0R3702
P0J103
P0T700
P0P503P0T900
P0P601
P0P603
P0P705
P0P7010 P0T1200
P0P8010
P0P8026
P0P8027
P0P8028
P0J104
P0P9011
P0R402
P0R3202
P0U1013
N0PS1
N0PS1
N0PS1 N0PS1
N0PS1
P0J101
P0P9012
P0R302
P0R601
P0R3302
P0U1014
N0PS2
N0PS2
N0PS2
N0PS2
N0PS2
P0J102
P0P9013
P0R202
P0R501
P0R3402
P0U1015
N0PS3
N0PS3
N0PS3
N0PS3
N0PS3
P0C3601
P0J301
P0P701
P0P8012
P0P9010
P0R1702
P0U1012
N0SCL
N0SCL
N0SCL
N0SCL
N0SCL
N0SCL
P0J303
P0P703
P0P8011
P0P909
P0R1602
P0U1011
N0SDA
N0SDA
N0SDA
N0SDA
N0SDA
N0SDA
P0C2801
P0R102
P0T1600
P0U1043
N0V5EXT
N0V5EXT
P0C1301
P0C1401
P0C2001
P0C2601
P0C2701
P0C3001
P0C3101
P0C3201
P0C4501
P0J3010
P0P806
P0P1001
P0P1101
P0Q102P0Q103P0Q104
P0Q10MB2
P0Q202P0Q203P0Q204
P0Q20MB2
P0Q40MB
P0Q60MBP0Q60SL1P0Q60SL2
P0T1400
P0U1041
N0VIN
N0VIN
N0VIN
N0VIN
N0VIN
N0VIN
N0VIN
N0VIN
P0C4301
P0JP102
P0U108 N0VOUT40VPP
N0VOUT40VPP
P0J106
P0JP103
P0P506
N0VPP
N0VPP
N0VPP
N0AVDD
P0C2901
P0C3901
P0C4001
P0P904
P0U104
P0U1016
N0BST1
P0C2101
P0U1035
N0BST2
P0C1901
P0U1029
N0BST3
P0C2201
P0U1024
N0BST4
P0C2501
P0U1018
N0CH10OUT
N0VOUT1
P0C101
P0C501
P0C801
P0C4101
P0L102
P0P101
P0R101
P0R2001 P0R2101P0R2102
P0T100
P0U105
N0CH20OUT
N0VOUT2
P0C201
P0C601
P0C901
P0C4201
P0L202
P0P201
P0R2201 P0R2301P0R2302
P0T200
P0U106
N0CH30OUT
N0VOUT3
P0C301
P0C701
P0C1001
P0C4401
P0L302
P0P301
P0R2401 P0R2501P0R2502
P0T300
P0U107
N0CH40OUT
N0VOUT4
P0C401
P0C1101
P0C1201
P0C1501
P0C1601
P0JP101
P0L402
P0P401
P0R2601 P0R2701P0R2702
P0T400
N0CPLL
P0C3301
P0U103
N0ENABLE
P0J309
P0P709
P0R1301
P0R4402
N0ENABLE0IC P0P9015
P0R1302 P0U1040
N0EX1
P0P704
P0R4201
N0EX2
P0P706
P0R4001
N0EX3
P0P504
P0R3201
N0EX4
P0P502
P0R3301
N0EX5
P0P501
P0R3401
N0GH1
P0Q101
P0R1001 P0R1002
P0U1036
N0GH2
P0Q201
P0R1201 P0R1202
P0U1030
N0GH3 P0Q404
P0R801 P0R802P0U1025
N0GH4
P0Q604
P0R1501 P0R1502
P0U1019
N0GL1
P0Q108
P0R901 P0R902
P0U1038
N0GL2
P0Q208
P0R1101 P0R1102
P0U1032
N0GL3
P0Q304
P0R701 P0R702
P0U1027
N0GL4
P0Q504
P0R1401 P0R1402
P0U1021
P0C102
P0C202
P0C302
P0C402
P0C502
P0C602
P0C702
P0C802
P0C902
P0C1002
P0C1102
P0C1202
P0C1302
P0C1402
P0C1502
P0C1602
P0C1702
P0C1802
P0C2002
P0C2302
P0C2402
P0C2602
P0C2802
P0C2902
P0C3002
P0C3102
P0C3202
P0C3302
P0C3402
P0C3502
P0C3602
P0C3702
P0C3802
P0C3902
P0C4002
P0C4102
P0C4202
P0C4302
P0C4402
P0C4502
P0C4602
P0C4702
P0C4802
P0C4902
P0J105
P0J202
P0J204
P0J302
P0J307 P0J308
P0P102
P0P202
P0P302
P0P402
P0P505
P0P602
P0P604
P0P702
P0P707 P0P708
P0P804
P0P805
P0P903
P0P905
P0P908
P0P9014
P0P1002
P0P1102
P0P1103
P0Q105
P0Q106
P0Q107
P0Q205
P0Q206
P0Q207
P0Q301P0Q302P0Q303
P0Q501P0Q502P0Q503
P0R502
P0R602
P0R2002
P0R2202
P0R2402
P0R2602
P0R3001P0R3002 P0T500
P0T600
P0T800
P0T1000
P0T1100
P0T1500
P0U102
P0U1017
P0U1022
P0U1028
P0U1033
P0U1039
P0U1042
P0U1045
N0GPIO1
P0J304
P0P906
P0R4202
P0R4502
P0U109
N0GPIO2
P0J306
P0P907
P0R4002
P0R4302
P0U1010
N0IO2 P0P8015
P0R4501
N0IO3 P0P8016
P0R4301N0IO4 P0P8017
P0R4401
N0LDO3V3
P0C3501
P0C3801
P0J203
P0P902
P0U101
N0LDO5
N0VCCD
P0C1701
P0C1801
P0C2301
P0C2401
P0C3401
P0C3701
P0J201
P0J305
P0P901
P0R201
P0R301
P0R401
P0R1601
P0R1701 P0R1801P0R1802
P0R1901P0R1902
P0R3501 P0R3502
P0T1300
P0U1023
P0U1034
P0U1044
N0LX1
P0C2102
P0L101P0Q10MB1
P0R2801
P0R3801 P0R3802
P0U1037
N0LX2
P0C1902
P0L201P0Q20MB1
P0R2901
P0R3601 P0R3602
P0U1031
N0LX3
P0C2202 P0L301
P0Q30MB P0Q401P0Q402P0Q403
P0R3101
P0R3901 P0R3902
P0U1026
N0LX4
P0C2502
P0L401
P0Q50MBP0Q50SL1P0Q50SL2 P0Q601P0Q602P0Q603
P0R3701
P0R4101 P0R4102
P0U1020
P0C2702
P0C4601 P0R2802
P0C4701P0R2902
P0C4801 P0R3102
P0C4901 P0R3702
P0J103
P0T700
P0P503P0T900
P0P601
P0P603
P0P705
P0P7010 P0T1200
P0P8010
P0P8026
P0P8027
P0P8028
N0PS1
P0J104
P0P9011
P0R402
P0R3202
P0U1013
N0PS2 P0J101
P0P9012
P0R302
P0R601
P0R3302
P0U1014
N0PS3
P0J102
P0P9013
P0R202
P0R501
P0R3402
P0U1015
N0SCL
P0C3601
P0J301
P0P701
P0P8012
P0P9010
P0R1702
P0U1012
N0SDA P0J303
P0P703
P0P8011
P0P909
P0R1602
P0U1011
N0V5EXT
P0C2801
P0R102
P0T1600
P0U1043
N0VIN
P0C1301
P0C1401
P0C2001
P0C2601
P0C2701
P0C3001
P0C3101
P0C3201
P0C4501
P0J3010
P0P806
P0P1001
P0P1101
P0Q102P0Q103P0Q104
P0Q10MB2
P0Q202P0Q203P0Q204
P0Q20MB2
P0Q40MB
P0Q60MBP0Q60SL1P0Q60SL2
P0T1400
P0U1041
N0VOUT40VPP
P0C4301
P0JP102
P0U108
N0VPP
P0J106
P0JP103
P0P506
Evaluation Board Schematic
10/16

X
XR
RP
P7
77
72
20
0/
/7
77
72
24
4/
/7
77
72
25
5E
EV
VB
B-
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DE
EM
MO
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-
1
1
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M/
/P
PF
FM
M
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B
Bo
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Pr
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© 2014 Exar Corporation 11/16 Rev. 2.0.0
BILL OF MATERIAL
Ref. Qty
Manufacturer Part Number Size Component
U1 1 Exar Corp. XRP7720-DEV
/XRP7724/XRP7725 TQFN44 2nd Generation 4Ch.
Sw. Controller
Q1,Q2 2 FAIRCHILD FDMC8200 Power 33 Dual N-Channel Power
Trench MOSFET
Q3 1 FAIRCHILD FDMC7660 Power 33 N-Channel Power
Trench MOSFET
Q4 1 FAIRCHILD FDMC8882 MLP 3.3X3.3 N-Channel Power
Trench MOSFET
Q5 1 FAIRCHILD FDMS7560S Power 56 N-Channel Power
Trench SyncFET
Q6 1 Vishay Siliconix SIR474DP PowerPAK SO-
8
N-Ch. 30-V (D-S)
MOSFET
L1 1 WURTH
ELEKTRONIK 744314490 7.0x6.9mm Inductor 4.9uH,
14.5mΩ, 6.5A
L2 1 WURTH
ELEKTRONIK 744314330 7.0x6.9mm Inductor 3.3uH,
9.0mΩ, 9.0A
L3 1 WURTH
ELEKTRONIK 744314200 7.0x6.9mm Inductor 2.0uH,
5.85mΩ, 11.5A
L4 1 WURTH
ELEKTRONIK 7443551130 13.2X12.8mm Inductor 1.3uH,
1.8mΩ, 25A
C1,C2,C5,C6 4 MURATA CORP. GRM32ER70J476KE20L 1210 CAP CER 47uF, 6.3V,
X7R, 10%
C3,C4,C7,C11,C12,C15 6 MURATA CORP. GRM32ER60J107M20L 1210 CAP CER 100uF, 6.3V,
X5R, 20%
C8,C9,C10,C16 4 MURATA CORP. GRM21BR71H105KA12L
0805 CAP CER 1.0uF, 50V,
X7R, 10%
C13,C14,C20,C30,C31,C32,C45 7 MURATA CORP. GRM32ER7YA106KA12L 1210 CAP CER 10uF,
35V,X7R, 10%
C17,C23,C27-C29,C34,C35**,C40 8 MURATA CORP. GRM188R71H103KA01D
0603 CAP CER
0.01uF,50V,X7R,10%
C18,C24,C37,C39 4 MURATA CORP. GRM21BR71C475KA73 0805 CAP CER 4.7uF,
16V,X7R,10%
C19,C21,C22,C25,C33,C41-C44 9 MURATA CORP. GRM188R71H104KA93D
0603 CAP CER 0.1uF,
50V,X7R,10%
C26 1 MURATA CORP. GRM188R71H222KA01D
0603 CAP CER
2200pF,50V,X7R,10%

X
XR
RP
P7
77
72
20
0/
/7
77
72
24
4/
/7
77
72
25
5E
EV
VB
B-
-D
DE
EM
MO
O-
-
1
1
Q
Qu
ua
ad
d
C
Ch
ha
an
nn
ne
el
l
D
Di
ig
gi
it
ta
al
l
P
PW
WM
M/
/P
PF
FM
M
D
De
em
mo
o
B
Bo
oa
ar
r
d
d
P
Pr
ro
og
gr
ra
am
mm
ma
ab
bl
le
e
P
Po
ow
we
er
r
M
Ma
an
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ag
ge
em
me
en
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S
Sy
ys
st
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m
m
© 2014 Exar Corporation 12/16 Rev. 2.0.0
Ref. Qty
Manufacturer Part Number Size Component
C38** 1 MURATA CORP. GRM21BR71C225KA12L 0805 CAP CER 2.2uF,
16V,X7R,10%
R16,R17 2 PANASONIC ERJ-3EKF4701V 0603 RES 4.7K OHM,
1/10W, 1%, SMD
J1 1 WURTH
ELEKTRONIK 61300624321
2.54mm
Angled Dual
Socket
2.54mm dual Pin
Socket Header WR-
PHD
J3 1 WURTH
ELEKTRONIK 613 010 243 121
2.54mm
Angled Dual
Socket
2.54mm dual Pin
Socket Header WR-
PHD
JP1 1 WURTH
ELEKTRONIK 61300311121 2.54mm Pin
Header
2.54mm Pin Header
WR-PHD, 3 Pins
JP1(jumper) 1
WURTH
ELEKTRONIK 609 002 115 121 2.54mm Pin
Jumper
2.54mm Pin Jumper
w/Test Point
P1, P2,P3,P4,P10 5 WURTH
ELEKTRONIK
691 216 510 002 9.5x5.08mm CONN.TERM. BLOCK
2POS
P5 1 WURTH
ELEKTRONIK
61300621021 2.54mm Dual
Pin Header
2.54mm Dual Pin
Header Wr-PHD
P7 1
WURTH
ELEKTRONIK 61301021021 2.54mm Dual
Pin Header
2.54mm Dual Pin
Header Wr-PHD
P9 1
WURTH
ELEKTRONIK 61301511121 2.54mm Pin
Header
2.54mm Pin Header
WR-PHD, 15 Pins
P11 1 Switchceaft
Corp. RAPC722X 2.1mmID,
5.5mmOD
Conn. Powerjack Mini
R/A, T/H
T6,T8,T10,T11 4 WURTH
ELEKTRONIK
61304011121 2.54mm Pin
Header
2.54mm Pin Header
WR-PHD, 40 Pins
Note**: Not loaded on XRP7720EVB-DEMO-1

X
XR
RP
P7
77
72
20
0/
/7
77
72
24
4/
/7
77
72
25
5E
EV
VB
B-
-D
DE
EM
MO
O-
-
1
1
Q
Qu
ua
ad
d
C
Ch
ha
an
nn
ne
el
l
D
Di
ig
gi
it
ta
al
l
P
PW
WM
M/
/P
PF
FM
M
D
De
em
mo
o
B
Bo
oa
ar
r
d
d
P
Pr
ro
og
gr
ra
am
mm
ma
ab
bl
le
e
P
Po
ow
we
er
r
M
Ma
an
na
ag
ge
em
me
en
nt
t
S
Sy
ys
st
te
e
m
m
© 2014 Exar Corporation 13/16 Rev. 2.0.0
EVALUATION BOARD LAYOUT
Figure 4: Component Placement – Top Side
Figure 5: Layout – Top Side

X
XR
RP
P7
77
72
20
0/
/7
77
72
24
4/
/7
77
72
25
5E
EV
VB
B-
-D
DE
EM
MO
O-
-
1
1
Q
Qu
ua
ad
d
C
Ch
ha
an
nn
ne
el
l
D
Di
ig
gi
it
ta
al
l
P
PW
WM
M/
/P
PF
FM
M
D
De
em
mo
o
B
Bo
oa
ar
r
d
d
P
Pr
ro
og
gr
ra
am
mm
ma
ab
bl
le
e
P
Po
ow
we
er
r
M
Ma
an
na
ag
ge
em
me
en
nt
t
S
Sy
ys
st
te
e
m
m
© 2014 Exar Corporation 14/16 Rev. 2.0.0
Figure 6: Layout - Bottom
Figure 7: Layout – Middle Layer 1

X
XR
RP
P7
77
72
20
0/
/7
77
72
24
4/
/7
77
72
25
5E
EV
VB
B-
-D
DE
EM
MO
O-
-
1
1
Q
Qu
ua
ad
d
C
Ch
ha
an
nn
ne
el
l
D
Di
ig
gi
it
ta
al
l
P
PW
WM
M/
/P
PF
FM
M
D
De
em
mo
o
B
Bo
oa
ar
r
d
d
P
Pr
ro
og
gr
ra
am
mm
ma
ab
bl
le
e
P
Po
ow
we
er
r
M
Ma
an
na
ag
ge
em
me
en
nt
t
S
Sy
ys
st
te
e
m
m
© 2014 Exar Corporation 15/16 Rev. 2.0.0
Figure 8: Layout – Internal Plane

X
XR
RP
P7
77
72
20
0/
/7
77
72
24
4/
/7
77
72
25
5E
EV
VB
B-
-D
DE
EM
MO
O-
-
1
1
Q
Qu
ua
ad
d
C
Ch
ha
an
nn
ne
el
l
D
Di
ig
gi
it
ta
al
l
P
PW
WM
M/
/P
PF
FM
M
D
De
em
mo
o
B
Bo
oa
ar
r
d
d
P
Pr
ro
og
gr
ra
am
mm
ma
ab
bl
le
e
P
Po
ow
we
er
r
M
Ma
an
na
ag
ge
em
me
en
nt
t
S
Sy
ys
st
te
e
m
m
© 2014 Exar Corporation 16/16 Rev. 2.0.0
DOCUMENT REVISION HISTORY
Revision Date Description
1.0.0 09/28/12 Initial release of document
1.1.0
06/18/2013 BOM- Change of Manufacturer P1,P2,P3,P4,P10.
1.1.1 10/14/2013 Deleted C36 from the bill of materials
2.0.0 01/31/2014 Added XRP7720-DEV and XRP7725 information
BOARD REVISION HISTORY
Board Revision
Date Description
XRP7724EVB-
DEMO-1-01
10/01/12 Initial release of evaluation board
FOR FURTHER ASSISTANCE
Email: customersupport@exar.com
Exar Technical Documentation: http://www.exar.com/TechDoc/default.aspx?
EXAR CORPORATION
HEADQUARTERS AND SALES OFFICES
48720 Kato Road
Fremont, CA 94538 – USA
Tel.: +1 (510) 668-7000
Fax: +1 (510) 668-7030
www.exar.com
NOTICE
EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve
design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits described herein,
conveys no license under any patent or other right, and makes no representation that the circuits are free of patent
infringement. Charts and schedules contained here in are only for illustration purposes and may vary depending upon a
user’s specific application. While the information in this publication has been carefully checked; no responsibility, however,
is assumed for inaccuracies.
EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or
malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its
safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in
writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all
such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances.
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
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