ADP1043A Daughter Card Evaluation Board

ADP1043A Daughter Card Evaluation Board
ADP1043ADC1-EVALZ
PRD1274
FEATURES
ADP1043A Daughter Card with I2C interface
Retrofit controller to any topology or existing design
Software GUI
Low component count
ADP1043A EVALUATION BOARD OVERVIEW
The daughter card evaluation board allows the ADP1043A to be quickly evaluated in any existing switching power supply
application. Using the daughter card and its accompanying software, the IC can be interfaced to any PC running Windows
2000/NT/XP/Vista via the computers USB port.
The daughter card can be connected to any existing ADP1043A evaluation board or reference design.
It can also be connected to any power supply as a replacement for the existing controller. The daughter card has a connector
through which the pin outs of the ADP1043A can be probed. The software GUI allows control and read/write functionality of
the ADP1043 internal registers to modify, for example, the PWM settings or over current protection limits.
Rev. 1.0
Reference designs are as supplied “as is” and without warranties of any kind, express, implied, or
statutory including, but not limited to, any implied warranty of merchantability or fitness for a
particular purpose. No license is granted by implication or otherwise under any patents or other
intellectual property by application or use of reference designs. Information furnished by Analog
Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may
result from its use. Analog Devices reserves the right to change devices or specifications at any
time without notice. Trademarks and registered trademarks are the property of their respective
owners. Reference designs are not authorized to be used in life support devices or systems.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
©2009 Analog Devices, Inc. All rights reserved.
ADP1043ADC1-EVALZ
PRD1274
TABLE OF CONTENTS
Features ....................................................................................................................................................................................... 1
EVALUATION BOARD HARDWARE............................................................................................................................................ 3
CONNECTORS ............................................................................................................................................................................ 4
REFURNISHING AND EXISTING DESIGN WITH ADP1043A DAUGHTER CARD ..................................................................... 5
Additional key points and checklist: .............................................................................................................................................. 7
SCHEMATIC ............................................................................................................................................................................. 8
LAYOUT ....................................................................................................................................................................................... 9
BILL OF MATERIALS ................................................................................................................................................................. 12
Notes .......................................................................................................................................................................................... 13
REVISION HISTORY
09/15/2010 - Revision 1.0: SPM
09/21/2010 - Revision 2.0: SPM with MS feedback
10/04/2010 - Revision 3.0: MS feedback implemented
ADP1043ADC1-EVALZ
EVALUATION BOARD HARDWARE
PRD1274
ADP1043ADC1-EVALZ
PRD1274
CONNECTORS
The pin outs of the USB dongle are given below:
Figure 4 – I2C connector (pin1 on left)
Pin
Evaluation Board Function
1
5V
2
SCL
3
SDA
4
Ground
ADP1043ADC1-EVALZ
PRD1274
REFURNISHING AND EXISTING DESIGN WITH ADP1043A
DAUGHTER CARD
To evaluate the IC with an existing power supply, a jumper cable can be used. Figure 6 and Figure 7 demonstrate how a
jumper cable is connected on one end to the daughter card and the other end to the respective function of the pin on the
power supply.
Care must be taken to ensure that the traces/wires that are connected at their respective sensing points are short and are not
routed through any high frequency traces (switching nodes) of the power stage that would result in poor signal integrity due to
noise injection or EMI. A spread of wires must definitely be avoided as this increases the probability of injected noise due to
bigger loop areas and common impedance coupling between the power ground and the analog and digital grounds.
Note: The ADP1043A provides control and logic signals for the power switches. External drivers need to be used to turn on/off
the switches in the power stage of the design.
ADP1043ADC1-EVALZ
PRD1274
ADP1043ADC1-EVALZ
PRD1274
ADDITIONAL KEY POINTS AND CHECKLIST:
1. The daughter card is powered using the USB cable. The 3.3V LDO present on the PCB
converts the 5V to 3.3V which supplies power to the ADP1043A. Alternately an isolated power
supply 5V or 12V (referenced to AGND) may be used and connected to pins on the daughter
card. The I2C connecter also has the SDA and SCL pins which are used for serial
communication to the ADP1043A using the software GUI.
2. The RTD pin is referenced to AGND and the thermistor must be ideally placed close to the
hottest part of the power stage for monitoring over temperature. Leave open if not used.
3. Connect the FLAGIN pin to 3.3V if this function is not required or set the flag to ignore in the
Flags and Settings window in the GUI.
4. Connect PS_ON to 3.3V using a switch or permanently connected to 3.3V. If permanently
connected then the power supply can be turned on using software PS_ON in the GUI.
5. OUTA, OUTB, OUTC, OUTD, and OUTAUX, are the PWMs used for the primary power
switches while SR1 and SR2 are the PWMs used for the secondary side synchronous rectifiers.
6. The ACSNS flag is set when the ACSNS pin reads a value less than 0.45V. The flag is
configurable.
7. CS2+ and CS2- (differential input) must be connected across the current sense resistor. Care
must be taken not to exceed 150mV as it exceeds the maximum range of the ADC.
8. The voltage dividers for sensing the output voltage (VS1, VS2, and VS3) are on the daughter
card. VS1 and VS2 are referenced to PGND whereas VS3+ and VS3- are differential inputs.
VS3- must be connected to PGND. The voltage divider must be configured to provide 1V at the
divider at the nominal output voltage to provide enough range for trimming. Care must be taken
not to exceed 1.55V as it exceeds the maximum range of the ADC.
9. The GATE pin must be left open if the OrFET functionality is not used.
10. The CS1 signal is referenced to PGND. Care must be taken not to exceed 1.55V as it exceeds
the maximum range of the ADC. The CS1 fast OCP comparator is set to trip at 1.2V. When
using a current sense transformer the resistor R (see Figure 8) is sized by the equation:
R V_CS1 N 2 ( N1 I PRIMARY_PEAK ) .
11. An external 12V connection can be provided to pin 30 of the daughter card to provide power for
the switch drivers.
NOTES:
R2
1k
R1
27K
C10
100pF
ACSNS
DNI
DNI
DNI
33pF 33pF
DNI
R4
10k
CS2+
C17
DNI
C10 C13 C16 C17
DNI
10k
High Side 110k 110k DNI
R4
R3
SHARE0
SHAREi
SDA
SCL
RTD
FLAGIN
PGOOD2
PGOOD1
PSON
OUTAUX
OUTD
OUTC
OUTB
OUTA
CS1
ACSNS
SR1
SR2
CS2-
CS2+
VS1
VS2
GATE
VS3+
VS3-
+5V
+3.3V
Low Side 10k
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
+12V
2
2
PGND
C13
100pF
C16
DNI
CS2-
R13
0
R3
10k
C2
DNI
C1
DNI
AGND
R6
1k
R5
11k
VS1
R16
0
R11
1k
R10
11k
C15
1000pF
C4
DNI
C3
DNI
DGND
CS1
R8
1k
R7
11k
VS2
8
7
6
5
4
3
2
1
C14
0.1uF
VS3+
PGND
CS1
ACSNS
CS2+
CS2-
VS1
AGND
VS2
C9
DNI
C7
DNI
VS3-
2.2k
R19
28
31
32
VS3-
VS3+
RTD
28
C11
+3.3V
U1
ADP1043
RTD
0.1uF
C6
26
VCORE
SCL
SDA
PSON
FLAGIN
PGOOD2
PGOOD1
SHAREO
SHAREI
0.1uF
R29
2.2k
17
18
19
20
21
22
23
24
R33
DNI
+3.3V
R24
2.2k
R14
1.2k
+3.3V
SCL
SDA
PSON
FLAGIN
PGOOD2
PGOOD1
SHARE0
SHAREi
C5
1.0uF
50V
R17
0
D1
1N4148
+12V
5
6
8
7
D2
1N4148
GND
NR
OUT1
OUT2
SDA
SCL
+5V
4
3
2
1
U2
ADP3303
SD
ERR
IN1
IN2
+5V
2
1
29
33
PAD
DNI
R32
49.9k
30 R20
RES
OUTA
11
OUTA
SR1
9
SR1
29
ADD
OUTB
12
OUTB
OUTC
13
OUTC
SR2
10
SR2
27
VDD
OUTD
14
OUTD
25
DGND
GATE
16
GATE
OUTAUX
15
OUTAUX
1.2k
R15
2
1
30
1: R3, R4, R5, R6, R7, R8, R10, R11 ARE 0.1% 25ppm
UNLESS OTHERWISE SPECIFIED.
2
J1
4
3
1
2
J7
C8
0.1uF
C12
0.47uF
R12
1
+3.3V
ADP1043ADC1-EVALZ
PRD1274
SCHEMATIC
ADP1043ADC1-EVALZ
LAYOUT
PRD1274
ADP1043ADC1-EVALZ
PRD1274
ADP1043ADC1-EVALZ
PRD1274
ADP1043ADC1-EVALZ
PRD1274
BILL OF MATERIALS
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
Part Ref
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
J1
J7
R1
R2
R3
R4
R5
R6
R7
R8
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19
R20
R24
R29
R32
R33
U1
U2
Part Description
DNI
DNI
DNI
DNI
CAPACITOR CERAMIC 1.0UF 50V 10% X7R
CAPACITOR CERAMIC 0.1UF 10% 50V X7R
DNI
CAPACITOR CERAMIC 0.1UF 10% 50V X7R
DNI
DNI
CAPACITOR CERAMIC 0.1UF 10% 50V X7R
CAPACITOR CERAMIC 0.47UF 5% 17V X7R
DNI
CAPACITOR CERAMIC 0.01UF 10% 100V X7R
CAPACITOR CERAMIC 1000pF 10% 100V X7R
CONNETOR HEADER FEMALE 30PS .1" DL TIN
CONNECTOR HEADER 4POS SGL PCB 30 GOLD
RESISTOR 27.0K OHM 1/8W 1% SMD
RESISTOR 1.00K OHM 1/8W 1% SMD
RESISTOR 10.0K OHM 1/10W .1% +/-25ppm SMD
RESISTOR 10.0K OHM 1/10W .1% +/-25ppm SMD
RESISTOR 11.0K OHM 1/10W .1% +/-25ppm SMD
RESISTOR 1.00K OHM 1/10W .1% +/-25ppm SMD
RESISTOR 11.0K OHM 1/10W .1% +/-25ppm SMD
RESISTOR 1.00K OHM 1/10W .1% +/-25ppm SMD
RESISTOR 11.0K OHM 1/10W .1% +/-25ppm SMD
RESISTOR 1.00K OHM 1/10W .1% +/-25ppm SMD
RESISTOR 0.0 OHM 1/8W 5% SMD
RESISTOR 0.0 OHM 1/8W 5% SMD
RESISTOR 1.00K OHM 1/8W 1% SMD
RESISTOR 1.00K OHM 1/8W 1% SMD
RESISTOR 0.0 OHM 1/8W 5% SMD
RESISTOR 0.0 OHM 1/8W 5% SMD
DNI
RESISTOR 10.0K OHM 1/8W 1% SMD
RESISTOR 49.9K OHM 1/8W 1% SMD
RESISTOR 2.20K OHM 1/8W 1% SMD
RESISTOR 2.20K OHM 1/8W 1% SMD
DNI
DNI
I.C. Secondary Side Power Supply Controller
I.C. LDO LINEAR REGULATOR 200MA 3.3V
Package
Manufacturer
Murata
1210 Murata
805 AVX
GRM32RR71H105KA01L
08055C104KAT2A
805 AVX
08055C104KAT2A
805 AVX
805 AVX
08055C104KAT2A
0805YC474JAT2A
805
603
Fmal Socket
Header-4POS
805
805
805
805
805
805
805
805
805
805
805
805
805
805
805
805
805
805
805
805
LFCSP-32
SOIC-8
Mfg Part No
GRM32RR71H105KA01L
AVX
Murata
Sullins Connector Solutions
FCI
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
08051C103KAT2A
GRM188R72A102KA01D
PPTC152LFBN-RC
69167-104HLF
Any
Any
Any
Any
ADP1043A
ADP3303
Analog Devices
Analog Devices
ADP1043ADC1-EVALZ
NOTES
©2009 Analog Devices, Inc. All rights reserved.
Trademarks and registered trademarks are the
property of their respective owners. Error! Unknown document property name.
PRD1274
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