ZL2106EVAL1Z Evaluation Board

Application Note 1468
ZL2106EVAL1Z Evaluation Board
Description
Specifications
The ZL2106 is an innovative power conversion and
management IC that combines an integrated synchronous
step-down DC-DC converter with key power and fault
management functions in a small package, resulting in a
flexible and integrated solution. The ZL2106EVAL1Z platform
allows evaluation of the features in the highly configurable
ZL2106 in either stand-alone mode or via an I2C/SMBus™
interface.
This board has been optimized as a buck regulator for the
following operating conditions:
• VIN = 12V
• VOUT = 3.3V
• IMAX = 6A (with airflow)
• fSW = 400kHz
• Peak Efficiency: >85% at 50% Load
A USB-to-SMBus reference board can be used to connect the
ZL2106EVAL1Z board to a PC. The PMBus command set is
accessed by using the PowerNavigator™ evaluation software
from a PC running Microsoft Windows.
• Output Ripple: <0.5% at 6A
• Dynamic Response: 3.5%
(3A to 5A and 5A to 3A Steps, di/dt = 2.5A/µs)
• Board Temperature: +25°C
Key Features
Ordering Information
• Small, compact design
PART NUMBER
• PMBus™ control
ZL2106EVAL1Z
• Pin-strap selection for stand-alone operation
DESCRIPTION
ZL2106 Evaluation board only, one channel
• VOUT settable from 0.6V to 5V
• Convenient power connection
• On-board enable switch
• Power-good indicator
POWER IN
SW1
EN
POWER OUT
ZL2106
VTRK
J13
J12
SYNC
SM BUS
TRACK INPUT
SYNC
SM BUS
3
PG
FIGURE 1. ZL2106EVAL1Z BLOCK DIAGRAM
September 15, 2011
AN1468.2
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2009, 2011. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
Application Note 1468
Functional Description
Board Operation
The ZL2106EVAL1Z provides all circuitry required to demonstrate
the features of the ZL2106. The ZL2106EVAL1Z has a
functionality-optimized ZL2106 circuit layout that allows efficient
operation up to the maximum output current. Power and load
connections are provided through plug-in sockets.
Stand-Alone Operation
Standalone operation is achieved using the pin-strap settings.
The pin-strap setting details are described in the ZL2106 data
sheet FN6852.
The ZL2106 Evaluation Board is shown in Figure 2. The SMBus
address is selectable through jumpers on the top side of the
board. All power to the board (VIN and I2C/SMBus bus) must be
removed before changing the jumpers. The back side of the
board has 0402 resistor footprints for setting the configuration
pins using resistors.
The hardware enable function is controlled by a toggle switch on
the ZL2106EVAL1Z board. The Power-Good (PG) LED is powered
from the I2C/SMBus source; it indicates the correct state of PG
when external power is applied to the ZL2106EVAL1Z board. The
right angle headers at opposite ends of the board are for
connecting a USB to I2C/SMBus control board or for daisy
chaining of multiple evaluation boards. Figure 3 shows the
ZL2106 application circuit. The circuit consists of the ZL2106
power conversion and management IC with its minimal
component count to realize a buck converter. The board layout
has been optimized for thermal performance.
The ZL2106 is easy to setup and operate. It is configured, out of
the box, to provide 3.3V at 6A from a 12V source. All input and
output connections should to be made before turning on the
input power supply.
When the input power supply is turned on, the ZL2106 will output
the configured voltage and the load applied to VOUT+/VOUT- can
be varied.
To modify the pin-strap setting of the ZL2106, input power must
be turned off. The user adjustable pin-strap resistor pads are on
the bottom side of the ZL2106EVAL1Z PCB. Once the desired
pin-strap settings and component changes have been applied,
power can be turned on and the output can be evaluated for the
newly configured mode. Refer to the ZL2106 data sheet FN6852
for pin-strap and resistor setting information. Refer to Figure 2
for resistor pad locations.
PMBus Operation
The ZL2106 utilizes the PMBus protocol. The PMBus functionality
can be controlled via USB from a PC running the PowerNavigator
evaluation software in a Windows XP or Windows 2000/NT
operating system.
Install the ZL2106EVAL1Z software using the CD included in the
ZL2106EVAL1Z kit.
Figure 4 shows the interface connections. Figure 5 illustrates the
input and output power connections. The optional input
capacitors and output capacitors are also shown in Table 1,
which lists the complete bill of materials and is a recommended
component list for the ZL2106.
For PMBus operation, connect another Zilker Labs evaluation
board, such as the ZL2006EV2 or the USB-to-SMBus reference
board, to J12 of the ZL2106EVAL1Z board. Connect the desired
load and an appropriate power supply to the input. Place the
ENABLE switch in “DISABLE” and turn on the power.
The PCB has four layers and the layout for each layer is shown in
Figure 6 to Figure 11. This is a recommended example layout for
the ZL2106.
The PowerNavigator evaluation software allows modification of
all ZL2106 PMBus parameters. Refer to Zilker Labs application
note AN2033 for PMBus command details. Use the mouse-over
pop-ups for PowerNavigator help. Manually configure the ZL2106
through PowerNavigator or load a predefined scenario from a
configuration file.
Operating Range
By default, the ZL2106EVAL1Z is configured for the operating
conditions shown on page 1 using the bill of materials listed in
Table 1 on page 8. The board can also support a wider operating
range, and modifying the operating conditions will change the
performance results.
The default board VOUT range is 0.54V to 5.5V including margin.
The output voltage can be changed by using the VSET resistor
pad or by using a PMBus command. The board IOUT range is 0A
to 6A.
The board schematic in Figure 3 includes resistor population
options for these connections.
The default switching frequency (fSW) is 400kHz. The fSW range
is 200kHz to 1MHz. The PWM loop must maintain stability at the
selected switching frequency, so the loop compensation PID
settings may need to be modified when fSW is changed.
CompZL™ can be used to generate PID settings for different
switching frequencies.
2
The ENABLE switch can then be moved to “ENABLE” and the
ZL2106 can be tested. Alternately, the PMBus ON-OFF CONFIG
and OPERATION commands may be used.
Loop Compensation Settings
These PID settings are included in the configuration file that is
stored on the ZL2106 Evaluation Board, and is shown in “Default
Configuration Text” on page 18 for reference. CompZL can be
used to generate appropriate PID settings for other circuit
configurations.
References
1. ZL2106 Data Sheet, 6A Digital-DC Synchronous Step-Down
DC-DC Converter, File No. FN6852.
2. Zilker Labs PMBus Command Set - DDC Products, AN2033
AN1468.2
September 15, 2011
Application Note 1468
Quick Start Guide
Stand Alone Operation
1. Set ENABLE switch to “DISABLE”
2. Apply load to VOUT+/VOUT3. Connect input power supply to VIN+/VIN- (supply turned OFF)
4. Turn input power supply ON
5. Set ENABLE switch to “ENABLE”
6. Test ZL2106 operation
7. To change hardware settings, turn input power supply OFF,
modify resistor settings and then turn the input power
supply ON
USB (PMBus) Operation
1. Follow Steps 1 - 4 for stand alone operation
2. Insert the Zilker Labs Eval Kit CD
3. Connect USB-to-SMBus reference board to J12 of
ZL2106EVAL1Z
4. Connect supplied USB cable from computer to USB-to-SMBus
reference board
a. Upon first-time connection, the Found New Hardware
Wizard will appear.
b. Windows XP users: Select ‘No’ at prompt to search the
Internet for drivers.
c. Follow the steps on the screen to install the drivers from
the CD.
5. Install the PowerNavigator evaluation software by running
setup.exe from the PowerNavigator_installer folder on the CD.
6. Set voltage to desired value in GUI.
7. Set ENABLE switch on EVB to “ENABLE”
8. Monitor and configure EVB using PMBus commands in the
evaluation software
9. Test ZL2106 operation using the evaluation software.
3
AN1468.2
September 15, 2011
Application Note 1468
SMBus
Address
Jumper
Pin-Strap
Settings
Resistor
FIGURE 2. ZL2106EVAL1Z EVALUATION BOARD (TOP SIDE AND BOTTOM SIDE)
4
AN1468.2
September 15, 2011
ZL2106EVAL1Z Schematics
VIN
VRA
1000 Ohm
FB1
R2 NI
V25
VRA
C2
10uF
6.3V
C1
4.7uF
10V
OPTIONAL FILTER FOR INPUT
NOISE AND RIPPLE.
C3
1uF
25V
R186 NI
5
SGND
SGND
SGND
VR
VDDS
DDC
EN
36
35
34
33
32
31
30
29
28
VIN
EN
MGN
DDC
V2P5
VRA
VR
VDDS
VDDP
VDDP
10
11
12
13
14
15
16
17
18
SGND
ZL2106
VDDP
BST
SW
SW
SW
SW
SW
SW
PGND
27
26
25
24
23
22
21
20
19
BST
C5
TP2
47nF
L2
SW
VOUT
6.0uH
C6
10uF
16V
37
PG
DGND
SYNC
VSET
SA
SCL
SDA
SALRT
FC
CFG
SS
VT/XM
VSEN
SGND
PGND
PGND
PGND
PGND
SYNC
VSET
SA
SCL
SDA
SALRT
FC
1
2
3
4
5
6
7
8
9
C12
100uF
6.3V
CFG
SS
VTRK
VSEN
XX1
RTN
SGND
FIGURE 3. ZL2106EVAL1Z CIRCUIT
SGND
Application Note 1468
U11
PG
C4
4.7uF
10V
AN1468.2
September 15, 2011
VRA
VRA
R155
NI
R156
NI
CFG
R127 R128 R131
21.5k 21.5k 21.5k
6
TP5 TP7
SCL
SALRT
2
4
6
8
10
SALRT
SDA
1
3
5
7
9
VSET
R27
NI
SGND
SGND
VTRK
DDC
MSTR EN
MSTR SYNC
PG-
R143
SA
J15
49R9
J13
2
4
6
8
10
TP13 TP1
1
3
5
7
9
SGND
TP12
Addr
0x25
0x26
0x27
0x28
0x29
HEADER 5X2
TP8
R152
178k
R130
DDC
DDC
MSTR EN
MSTR SYNC
PG
PG
VOUT
49R9
1
3
5
7
9
16.2k R17
17.8k R18
19.6k R19
21.5k R20
23.7k R21
2
4
6
8
10
HEADER 5x2 PIN
HEADER 5X2
TO SEQUEL
SGND
+Vi2c
TP14
VRA
EN
D12
LED Green
D15
BAT54XV2T1G
C61
0.1uF
R49
10k
SW1
R120
100k
R121
392
Enable
Monitor
Disable
1
2
3
SW_SPDT
Q12
2N7002/SOT
TP11
AN1468.2
September 15, 2011
R150
R50
10k
R145
49R9
5
VCC
SGND
R146
2 A
C62
1uF
1 NC
C64
GND
3
0.1uF
49R9
JP11
U9
SN74AUP1G17
SGND
PG
499
Y 4 EN
MSTR EN 1
2
3
PG4
4301 WESTBANK DRIVE
BUILDING A, SUITE 100
AUSTIN, TEXAS 78746
SGND
FIGURE 4. ZL2106EVAL1Z INTERFACE
Application Note 1468
SDA
SCL
R153
NI
FC
R35
NI
SGND
R132
21.5k
VRA
R26
NI
SYNC
R135
NI
SGND +Vi2c
FROM PREQUEL TP6
J12
VRA
R34
NI
SS
R134
NI
+Vi2c
VRA
VIN
1
2
+
-
J27
VIN
R129
VSEN
VOUT
49R9
P1
VIN
7
C63
180u
16V
1
2
J24
J25
1
2
P2
D10
STPS20L45CG
D-2PAK
C67
22u
R185
NI
RTN
SGND
RTN
Backside components
D13
BAT54XV2T1G
U10
MIC2920A-3.3WS
2
P3
3
VOUT
VOUT
G
VO
G
VI
4
1
C68
22u
C69
22u
P4
This
stand alone
alone operation
operationwhen
whennot
notusing a USB
Thisregulator
regulator allows
allows stand
using
a USB
USB dongle
is applied,
dongle.
Whendongle.
no USB When
dongleno
is applied,
this regulator
is supplying
this
supplying
Vi2c
current thus efficiency
Vi2cregualtor
current, is
thus,
efficiency
measurements
will be affected.
measurements will be affected.
C13 C14 C15 C16
100uF 100uF 100uF 100uF
6.3V 6.3V 6.3V 6.3V
C21 C22 C23 C24
330uF 330uF 330uF 330uF
6.3V 6.3V 6.3V 6.3V
RTN
RTN
VOUT
1
2
J26
FIGURE 5. ZL2106EVAL1Z POWER I/O
+
-
Application Note 1468
+Vi2c
AN1468.2
September 15, 2011
Application Note 1468
TABLE 1. BILL OF MATERIALS
PART NUMBER
REFERENCE
QTY DESIGNATOR
ZL2106EVAL1ZREVCPCB
1
H1045-00104-16V10-T
2
H1045-00105-25V10-T
DESCRIPTION
MANUFACTURER
MANUFACTURER
PART
PWB-PCB, ZL2106EVAL1Z, REVC, ROHS
IMAGINEERING INC
ZL2106EVAL1ZREVCPCB
C61, C64
CAP, SMD, 0603, 0.1µF, 16V, 10%, X7R, ROHS
MURATA
GRM39X7R104K016AD
2
C3, C62
CAP, SMD, 0603, 1µF, 25V, 10%, X5R, ROHS
MURATA
GRM188R61E105KA12D
H1045-00473-25V10-T
1
C5
CAP, SMD, 0603, .047µF, 25V, 10%, X7R, ROHS MURATA
GRM188R71E473KA01D
H1046-00106-10V10-T
1
C2
CAP, SMD, 0805, 10µF, 10V, 10%, X5R, ROHS
MURATA
GRM21BR61A106KE19L
(Pb-Free)
H1046-00475-10V10-T
2
C1, C4
CAP, SMD, 0805, 4.7µF, 10V, 10%, X5R, ROHS
AVX
0805ZD475KAT2A
H1065-00106-16V10-T
1
C6
CAP, SMD, 1206, 10µF, 16V, 10%, X5R, ROHS
VENKEL
C1206X5R160-106KNE
(Pb-Free)
H1082-00107-6R3V20-T
5
C12, C13,
C14, C15,
C16
CAP, SMD, 1210, 100µF, 6.3V, 20%, X5R, ROHS TDK
C3225X5R0J107M
H1082-00226-16V10-T
3
C67, C68,
C69
CAP, SMD, 1210, 22µF, 16V, 10%, X7R, ROHS
MURATA
GRM32ER71C226KE18L
T530Y337M006ATE006-T
4
C21, C22,
C23, C24
CAP-TANT, LOW ESR, SMD, 7.3X4.3X4, 330µF,
6.3V, 20%, ROHS
KEMET
T530Y337M006ATE006
7443551600
1
L2
COIL-PWR INDUCTOR, SMD, 13.2X12.8, 6.0µH,
20%, 12A, ROHS
Wurth Electronics
7443551600
APXA160ARA181MHC0G-T
1
C63
CAP, SMD, 8X12, 180µF, 16V, 20%, 16MΩ, ALUM. NIPPON CHEMI-CON
ELEC., ROHS
108-0740-001
4
CONN-JACK, BANANA-SS-SDRLESS, VERTICAL,
a) P1-P4
ROHS
(4 each attach solder
lugs)
JOHNSON
COMPONENTS
108-0740-001
108-0740-001
0
b) Under jack CONN-JACK, BANANA-SS-SDRLESS, VERTICAL,
head on top ROHS
of PCB
JOHNSON
COMPONENTS
108-0740-001
108-0740-001
0
c) See
“DOCUMENT
#1”
CONN-JACK, BANANA-SS-SDRLESS, VERTICAL,
ROHS
JOHNSON
COMPONENTS
108-0740-001
3-644456-2
0
CONN-HEADER, 1X2, VERTICAL, 2.54mm, TIN,
DNP-HS1,
J24, J25, J26, ROHS
J27
TYCO ELECTRONICS
3-644456-2
3-644456-4
1
JP11
CONN-HEADER, 1X4, VERTICAL, TIN, WHT NYLON, AMP/TYCO
ROHS
3-644456-4
67996-272HLF-2X5
1
J15
CONN-HEADER, 2X5, BRKAWY-2X36, 2.54mm,
ROHS
BERG/FCI
67996-272HLF
881545-2
2
J15 =
Pin 1 and 2,
JP11 =
Pin 1 and 2
CONN-JUMPER, SHUNT LP W/HANDLE, 2P,
2.54mm, BLK, ROHS
TYCO ELECTRONICS
881545-2
SSQ-105-02-T-D-RA
1
J13
CONN-SOCKET STRIP, TH, 2X5, 2.54mm, TIN,
R/A, ROHS
SAMTEC
SSQ-105-02-T-D-RA
TSW-105-08-T-D-RA
1
J12
CONN-HEADER, 2X5, BRKAWY, 2.54mm, TIN,
R/A, ROHS
SAMTEC
TSW-105-08-T-D-RA
BAT54XV2T1G-T
2
D13, D15
DIODE-SCHOTTKY, SMD, 2P, SOD523, 30V,
200mA, ROHS
ON SEMICONDUCTOR
BAT54XV2T1G
STPS20L45CG
1
D10
DIODE-RECTIFIER, SCHOTTKY, SMD, D2PAK, 45V, STMICROELECTRONICS STPS20L45CG
10A, ROHS
8
APXA160ARA181MHC0G
AN1468.2
September 15, 2011
Application Note 1468
TABLE 1. BILL OF MATERIALS (Continued)
PART NUMBER
REFERENCE
QTY DESIGNATOR
DESCRIPTION
MANUFACTURER
MANUFACTURER
PART
CMD17-21VGC/TR8-T
1
D12
LED, SMD, 0805, GREEN, CLEAR, 10mcd, 2.1V,
20mA, 570nm, ROHS
CHICAGO MINIATURE
CMD17-21VGC/TR8
BLM21AG102SN1D-T
1
FB1
FERRITE CHIP, SMD, 0805, 1000Ω, 200mA,
100MHz, ROHS
MURATA
BLM21AG102SN1D
MIC2920A-3.3WS
1
U10
IC-LDO REGULATOR, 4P, SOT-223, 3.3V, 400mA, MICREL
ROHS
MIC2920A-3.3WS
SN74AUP1G17DCKR-T
1
U9
IC-BUFFER, SCHMITT TRIGGER, 5P, SC-70-5, 3.6V, TEXAS INSTRUMENTS
4mA, ROHS
SN74AUP1G17DCKR
ZL2106ALCNT
1
U11
IC-6A DIGITAL-DC CONVERTER, 36P, QFN, 6X6,
ROHS
INTERSIL
ZL2106ALCNT
2N7002-7-F-T
1
Q12
TRANSISTOR, N-CHANNEL, 3LD, SOT-23, 60V,
115mA, ROHS
DIODES, INC.
2N7002-7-F
H2510-00R00-1/16W-T
0
a) DNP- R2, RES, SMD, 0402, 0Ω, 1/16W, 5%, TF, ROHS
R26, R27,
R34, R35,
R134, R135,
VENKEL
CR0402-16W-00T
H2510-00R00-1/16W-T
0
RES, SMD, 0402, 0Ω, 1/16W, 5%, TF, ROHS
b) DNP R155, R156,
R186
VENKEL
CR0402-16W-00T
H2510-01002-1/16W1-T
2
R49, R50
RES, SMD, 0402, 10Ω, 1/16W, 1%, TF, ROHS
PANASONIC
ERJ-2RKF1002X
H2510-01003-1/16W1-T
1
R120
RES, SMD, 0402, 100Ω, 1/16W, 1%, TF, ROHS PANASONIC
ERJ2RKF1003
H2510-01622-1/16W1-T
1
R17
RES, SMD, 0402, 16.2Ω, 1/16W, 1%, TF, ROHS PANASONIC
ERJ-2RKF1622
H2510-01782-1/16W1-T
1
R18
RES, SMD, 0402, 17.8Ω, 1/16W, 1%, TF, ROHS KOA
RK73H1ETTP1782F
H2510-01962-1/16W1-T
1
R19
RES, SMD, 0402, 19.6Ω, 1/16W, 1%, TF, ROHS PANASONIC
ERJ-2RKF1962
H2510-02152-1/16W1-T
5
R20, R127, RES, SMD, 0402, 21.5Ω, 1/16W, 1%, TF, ROHS PANASONIC
R128, R131,
R132
ERJ-2RKF2152X
H2510-02372-1/16W1-T
1
R21
RES, SMD, 0402, 23.7Ω, 1/16W, 1%, TF, ROHS PANASONIC
ERJ-2RKF2372X
H2510-04990-1/16W1-T
1
R150
RES, SMD, 0402, 499Ω, 1/16W, 1%, TF, ROHS VENKEL
CR0402-16W-4990FT
H2510-049R9-1/16W1-T
3
R143, R145, RES, SMD, 0402, 49.9Ω, 1/16W, 1%, TF, ROHS
R146
PANASONIC
ERJ-2RKF49R9X
H2511-03920-1/10W1-T
1
R121
RES, SMD, 0603, 392Ω, 1/10W, 1%, TF, ROHS
PANASONIC
ERJ-3EKF3920V
H2511-049R9-1/10W1-T
1
R129
RES, SMD, 0603, 49.9Ω, 1/10W, 1%, TF, ROHS
VENKEL
CR0603-10W-49R9FT
H2511-DNP
0
R185
RES, SMD, 0603, DNP-PLACE HOLDER, ROHS
H2512-00R00-1/8W-T
1
R153
RES, SMD, 0805, 0Ω, 1/8W, TF, ROHS
YAGEO
RC0805JR-070RL
H2512-01783-1/8W1-T
1
R152
RES, SMD, 0805, 178Ω, 1/8W, 1%, TF, ROHS
VENKEL
CR0805-8W-1783FT
H2513-049R9-1/4W1-T
1
R130
RES, SMD, 1206, 49.9Ω, 1/4W, 1%, TF, ROHS
VISHAY/DALE
CRCW120649R9FKEA
G13AP-RO
1
SW1
SWITCH-TOGGLE, THRU-HOLE, 5P, SPDT, 3POS,
ON-OFF-ON, ROHS
NKK
G13AP-RO
172-1024-E
1
Bag & ship
w/board.
CABLE-USB 2.0, TYPE A MALE TO TYPE B MALE,
2M, ROHS
KOBICONN
172-1024-E
ZLUSBEVAL1ZFG
1
Bag & ship
w/board.
PWB-FG, ZLUSBEVAL1Z, ROHS
INTERSIL
ZLUSBEVAL1ZFG
4-40X1/4-SCREW-SS
4
Four corners
SCREW, 4-40X1/4in, PHILLIPS, PAN, STAINLESS KEYSTONE
STEEL, ROHS
9
9900
AN1468.2
September 15, 2011
Application Note 1468
TABLE 1. BILL OF MATERIALS (Continued)
PART NUMBER
REFERENCE
QTY DESIGNATOR
4-40X3/4-STANDOFF-SS
4
Four corners
5X8-STATIC-BAG
1
DOCUMENT #1
DESCRIPTION
STANDOFF, 4-40X3/4in, F/F, HEX, STAINLESS
STEEL, ROHS
MANUFACTURER
MANUFACTURER
PART
KEYSTONE
1921C
Place assy in BAG, STATIC, 5X8, ZIPLOC, ROHS
bag
INTERSIL
212403-013
1
Banana jack
instructions
See attached document for manual or visual
instruction
INTERSIL
DOCUMENT #1
INTERSIL-ZILKER_CD1
1
Bag & ship
w/board
CD-SOFTWARE, INTERSIL-ZILKER_CD1
INTERSIL
INTERSIL-ZILKER_CD1
Label-serial number
1
VC-234-8
4
CAPLUGS
VC-234-8
Label, for serial number and BOM rev #
P1, P2, P3,
P4
10
CAPLUG-ROUND VINYL CLOSURE, FLEXIBLE,
0.5X0.234, ROHS
AN1468.2
September 15, 2011
Application Note 1468
ZL2106EVAL1Z Board Layout - 6 Layers
FIGURE 6. TOP LAYER
NOTE: TP2 is labeled SW but is connected to BST (see Figure 3 schematic).
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September 15, 2011
Application Note 1468
ZL2106EVAL1Z Board Layout - 6 Layers (Continued)
FIGURE 7. PCB – INNER LAYER 1 (VIEWED FROM TOP)
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September 15, 2011
Application Note 1468
ZL2106EVAL1Z Board Layout - 6 Layers (Continued)
FIGURE 8. PCB – INNER LAYER 2 (VIEWED FROM TOP)
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September 15, 2011
Application Note 1468
ZL2106EVAL1Z Board Layout - 6 Layers (Continued)
FIGURE 9. PCB – INNER LAYER 3 (VIEWED FROM TOP)
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Application Note 1468
ZL2106EVAL1Z Board Layout - 6 Layers (Continued)
FIGURE 10. PCB – INNER LAYER 4 (VIEWED FROM TOP)
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September 15, 2011
Application Note 1468
ZL2106EVAL1Z Board Layout - 6 Layers (Continued)
FIGURE 11. PCB – BOTTOM LAYER (VIEWED FROM TOP)
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September 15, 2011
Application Note 1468
Typical Performance Curves for ZL2106 Buck Regulator
Unless noted: VIN = 12V, VOUT = 3.3V, fSW = 400kHz, TA = +25°C
25.0 mV
25.0
92
90
12.5
12.5 mV
86
RIPPLE (mV)
EFFICIENCY (%)
88
84
0 0 mV
82
80
78
-12.5 mV
-12.5
76
74
72
VIN = 12V, VOUT = 3.3V, 400kHz
0
1
2
3
4
IOUT (A)
5
7
6
0
10
0 µs
0.12
0
0.10
VOUT TRANSIENT (V)
VOUT TRANSIENT (V)
FIGURE 13. OUTPUT RIPPLE
0.02
-0.02
-0.04
-0.06
0.08
0.06
0.04
-0.08
0.02
-0.10
0
-0.02
0
0.05
0.1
TIME (µs)
-25.0 mV
-25.0
20 µs
TIME (µs)
FIGURE 12. MEASURED EFFICIENCY
-0.12
20
10 µs
0.15
0.2
0.05
0.1
TIME (µs)
0.15
0.2
FIGURE 15. DYNAMIC RESPONSE (5A TO 3A LOAD STEP,
di/dt = 2.5A/µs)
3.5
FIGURE 14. DYNAMIC RESPONSE (3A TO 5A LOAD STEP,
di/dt = 2.5A/µs)
0
3.0
3.5
2.5
3.0
1.5
2.0
1.5
2.0
1.0
VOUT (V)
0.006
0.007
0.008
TIME (s)
FIGURE 16. RAMP-UP TIME
17
0.009
0.010
0.008
0.007
0.006
0.005
0.003
TIME (s)
0.004
0.005
0.002
0
0.004
0
0.5
0.001
0.5
1.0
0
VOUT (V)
2.5
FIGURE 17. RAMP-DOWN TIME
AN1468.2
September 15, 2011
Application Note 1468
Default Configuration Text
The following configuration text is loaded into the ZL2106EVAL1Z as default settings. Each PMBus command is loaded via the
PowerNavigator software. The # symbol is used for a comment line.
OT_FAULT_RESPONSE 0xBF
#Configuration file for ZL2106
UT_FAULT_RESPONSE 0xBF
RESTORE_FACTORY
STORE_DEFAULT_ALL
#MFR_CONFIG 0x4200
STORE_USER_ALL
USER_CONFIG 0x2000
RESTORE_DEFAULT_ALL
MISC_CONFIG 0x0080
#DDC_CONFIG 0x0000
MFR_ID Zilker_Labs
MFR_MODEL ZL2106_EVAL1Z
INDUCTOR 6.0
MFR_REVISION 1.7
PID_TAPS A=21237.00, B=-37086.00, C=15871.00
MFR_LOCATION Austin_TX
#PID_TAPS A=23303.50, B=-44911.00, C=21628.00
FREQUENCY_SWITCH 400 # kHz
STORE_DEFAULT_ALL
RESTORE_DEFAULT_ALL
VOUT_COMMAND 3.3
POWER_GOOD_DELAY 1
VOUT_OV_FAULT_RESPONSE 0x80
VOUT_UV_FAULT_RESPONSE 0x80
OVUV_CONFIG 0x80
VIN_OV_FAULT_RESPONSE 0x80
VIN_UV_FAULT_RESPONSE 0x80
TON_DELAY 5
TON_RISE 10
TOFF_DELAY 5
TOFF_FALL 10
IOUT_OC_FAULT_LIMIT 10
IOUT_AVG_OC_FAULT_LIMIT 10
IOUT_UC_FAULT_LIMIT -4.0
IOUT_AVG_UC_FAULT_LIMIT -3.5
MFR_IOUT_OC_FAULT_RESPONSE 0x80
MFR_IOUT_UC_FAULT_RESPONSE 0x80
Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is
cautioned to verify that the Application Note or Technical Brief is current before proceeding.
For information regarding Intersil Corporation and its products, see www.intersil.com
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