MAX20094EVKIT [MAXIM]
Optimized Application Layout for Quick Implementation;
| 型号： | MAX20094EVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Optimized Application Layout for Quick Implementation |
| 文件： | 总13页 (文件大小：2565K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MAX20094/MAX20095 Evaluation Kits/
Evaluate: MAX20094/MAX20095
MAX20094/MAX20095 Evaluation Systems
General Description
Benefits and Features
● Easy Testing of CC/CV Charger, SOH Functions,
The MAX20094/MAX20095 evaluation kits (EV kits)
are fully assembled and tested application circuits for
the MAX20094/MAX20095 backup battery chargers and
and Boost Controller
● Free Downloadable EV Kit GUI
● MINIQUSB for Simplified Control
2
boost controllers with I C capability. The EV kits are set
up to provide the user with a convenient method to assess
the constant-current/constant-voltage (CC/CV) battery
charger, state-of-health (SOH) diagnostic features, and
the boost controller.
2
● Jumpers and Pins for External I C Controller
● Optimized Application Layout for Quick
Implementation
Both EV kits are recommended for use with the free
MAX20094companionGUIandanI Cinterfaceboard,such
● Both MAX20094 and MAX20095 EV Kits Can be
Used to Evaluate Either of the Pin-Compatible ICs
with Component Replacement of the U1 IC
2
as the Maxim Integrated command module (MINIQUSB).
2
The MINIQUSB enables I C communication through the
● Proven PCB Layout
USB port of a PC by emulating a 2-wire interface. The EV
system includes both the EV kit and the MINIQUSB
command module. Note: The EV kit can also be used as a
stand-alone board without these items. The EV kit can also
evaluate the pin-compatible MAX20095 with IC replace-
ment of U1.
● Fully Assembled and Tested
Ordering Information appears at end of data sheet.
MAX20094 EV Kit Photo
Note: Photo shows the Maxim MINIQUSB board on left and the MAX20094 EV kit board on right.
319-100055; Rev 5; 3/18
MAX20094/MAX20095 Evaluation Kits/
Evaluate: MAX20094/MAX20095
MAX20094/MAX20095 Evaluation Systems
4) Verify that all jumpers are in their default positions, as
shown in Table 1.
Quick Start
Required Equipment
● MAX20094 or MAX20095 EV kit
Procedure for CC/CV Charging
To quickly test the CC/CV battery-charging functionality,
power supplies and a variable power resistor are used
instead of actual batteries:
● Latest version of the MINIQUSB command module
firmware (optional, USB cable included) available from
www.maximintegrated.com/evkitsoftware
1) Preset the PS1 power supply to 14V, then disable the
supply. Connect the positive and negative terminals
to the MBATT1 and the neighboring GND test pads,
respectively, and turn on the supply.
● Latest version of the MAX20094 EV kit software,
available from www.maximintegrated.com/evkit-
software
● Three adjustable DC power supplies (PS1, PS2, PS3)
● Digital multimeter (DMM)
2) Preset the PS2 power supply to 4V, then disable the
supply. Connect the positive and negative terminals
to the VSUP1 and the neighboring GND test pads,
respectively, and turn on the supply.
● Power resistor, adjustable preferred (this can be
omitted if power supply can sink current)
3) Preset the PS3 power supply to 3.2V, then disable
the supply.
● Electronic load
Note: In the following sections, software-related items are
identified by bolding. Text in bold refers to items directly
from the EV kit software. Text in bold and underlined
refers to items from the Windows operating system.
4) Set a DMM to measure current. Connect the positive
terminal of PS3 to the DMM’s COM, and then connect
the positive side of the DMM to the BBAT+ test pad.
Close the current path by connecting the neighboring
GND test pad to the supply’s negative terminal and
turn on PS3.
Procedure
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation:
5) Connect a 60Ω power resistor across PS3, and
optimize the value of the resistor to the charging
current being tested.
1) Download the latest version of the EV kit software,
and install to your PC using the .EXE setup file.
The supported operating systems are Windows 7,
Windows 8, and Windows 10.
®
6) Start the EV kit software on the PC and click the
splash screen to bring up the main window.
2) Connect the USB cable from the PC to the MINIQUSB
board, and then plug it into JU1 on the EV kit.
7) Check CHG_EN in the GUI (Figure 1) to enable the
charger.
3) If the firmware on the MINIQUSB board is not
compatible with the GUI, the most recent version
should be downloaded and the board updated. Refer
to the MINIQUSB Firmware Update instructions in the
downloaded file for further information.
8) Verify that current through the DMM is approximately
50mA, from the board to the supply.
Table 1. MAX20094/MAX20095 EV Kits Default Jumper Settings
JUMPER
JU1
DEFAULT SHUNT POSITION
FUNCTION
—
MINIQUSB socket
—
JU2
—
JU3
Open
Disables (shorts EN1B to VDDIO)
JU4
Installed
Installed
Installed
Installed
Shorts MINIQUSB’s VDD to VDDIO
Shorts SDA to MINIQUSB’s SDA
JU5
JU6
Shorts SCL to MINIQUSB’s SCL
JU7
Connects STATUSB to VDDIO through 10kΩ resistor
Windows is a registered trademark and registered service mark of Microsoft Corporation.
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MAX20094/MAX20095 Evaluation Systems
Procedure for the State-of-Health (SOH)
Procedure for the Boost Controller
To quickly test the SOH functionality, power supplies are
used instead of actual batteries:
To quickly test the boost-controller functionality, power
supplies are used instead of actual batteries:
1) Preset PS1 to 14V, then disable the supply. Connect
the positive and negative terminals to MBATT1 and
the neighboring GND test pads, respectively, and turn
on the supply.
1) Preset PS1 to 14V, then disable the supply. Connect
the positive and negative terminals to MBATT1 and
the neighboring GND test pads, respectively, and turn
on the supply.
2) Preset PS2 to 4V, then disable the supply. Connect
the positive and negative terminals to VSUP1 and the
neighboring GND test pads, respectively, and turn on
the supply.
2) Preset PS2 to 4V, then disable the supply. Connect
the positive and negative terminals to VSUP1 and the
neighboring GND test pads, respectively, and turn on
the supply.
3) Preset PS3 to 3.2V, then disable the supply.
4) Set the DMM to measure current. Connect the
positive terminal of PS3 to the DMM’s COM, and then
connect the positive side of the DMM to the BBAT+
test pad. Close the current path by connecting the
neighboring GND test pad to the supply’s negative
terminal, then turn on PS3.
3) Preset PS3 to 3.2V, then disable the supply. Connect
the positive and negative terminals to BBAT+ and the
neighboring GND test pads, respectively, and turn on
the supply.
4) Connect an electronic load’s positive and negative
terminals to MBATT2 and the neighboring GND test
pads, respectively. Set the load to 100mA.
5) Start the EV kit software on the PC and click the
splash screen to bring up the main window.
5) Start the EV kit software on the PC and click the
splash screen to bring up the main window.
6) Check SOH_EN in the GUI (Figure 1) to enable the
6) Check BST_EN in the GUI to enable the boost
SOH function.
controller.
7) Verify that the MAX20094/MAX20095 current through
the DMM is approximately -500mA, flowing from the
supply to the board.
7) Lower PS1 from 14V to 0V.
8) Verify that MBATT2 voltage is approximately 6.2V on
the MAX20094 EV kit and 9V on the MAX20095 EV kit.
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MAX20094/MAX20095 Evaluation Kits/
Evaluate: MAX20094/MAX20095
MAX20094/MAX20095 Evaluation Systems
Switching Between Charging Modes
Detailed Description Software
When the charger is enabled, the operation is governed
by an internal state machine.
The GUI shown in Figure 1 is the main window of
MAX20094 EV kit software, and provides a convenient
means to control both the MAX20094 and MAX20095
ICs. When the software is first opened, a splash screen
appears. Click anywhere on the screen to proceed to the
main window. Verify that the bottom-right corner of the
status bar displays EV Kit: Connected. If there is a prob-
lem with the connection, reconnect the EV kit to the PC,
power it up, and then click Device > Connect, or press
F9 on the keyboard. Refer to the MAX20094/MAX20095
IC data sheet for a full description of each register and
their bits.
Disabled: The charger is in an OFF state if the CHG_EN
bit (register 0x04) = 0, or if the die temperature is above
thermal-shutdown threshold.
Prequal: The prequalify state is a current-limited mode
that occurs if BBAT+ voltage is less than an internal OTP
threshold. To enter this mode, set BBAT+ to 0V before
enabling the charger.
Standby: Once the charger is enabled, it remains in this
state until a valid supply condition is met. To verify on EV
kit, enable the charger and then enter SUP1 undervoltage
CC/CV Charging Details
lockout (UVLO) by reducing the V
to below 3.5V.
SUP1
The normal operating mode of the IC is to maintain
charge on the backup battery of a system. Several key
aspects of the charging function can be easily tested
through the GUI.
CC: The continuous-current mode is used when the
rechargeable battery needs a significant amount of charge.
To enter this mode, follow the quick start Procedure for
CC/CV Charging section.
Figure 1. MAX20094 Evaluation Kit Software Main Window (also applies to the MAX20095 EV Kit)
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CV: Continuous-voltage mode is triggered automatically
if the rechargeable battery approaches full charge, set by
0x06 CHGR_CV threshold. To test this from theQuick Start
setup, slowly increase the BBAT+ voltage until it is just
below the threshold.
SOH Current Limit
The SOH will report a current-limit error if SOH_ILIM is
operating in overcurrent condition, or BBAT+ is below
2.5V. When this occurs, SOH can no longer be enabled,
so the SOH_ILIM indicator in 0x02 GEN_STATUS
register blinks until the supply is increased again.
Done: When the charger detects that battery voltage has
surpassed 0x06 CHGR_CV threshold, it enters the done
state and no longer charges the battery. To quickly enter
this state, lower the 0x06 slider in the GUI below BBAT+
voltage.
Boost Controller Details
The boost controller allows the IC to maintain a regulated
supply voltage on the MBATT2 pin using the backup bat-
tery in the event of a main battery failure. The IC includes
a synchronous current-mode boost controller with factory-
preset output. The standard switching frequency is 2.1MHz
and operates in both FPWM and skip modes. When the
SUP2 pin is above the regulation voltage, the boost block
Setting Charger CC Current
In constant-current mode, the fast-charging current can
be adjusted based on system requirements. To adjust this
on the EV kit, adjust the 0x05 CHGR_CC slider in the GUI
(Figure 1). If a power supply without sinking capability is
used for BBAT+, a power resistor should be connected
in parallel to the board to dissipate the charge current
(flowing from board to supply). To prevent excess power
from being drawn, the optimal resistor value is derived
from:
enters an ultra-low I standby mode.
Q
Mode of Operation
The default mode of operation for the MAX20094/
MAX20095 is skip mode, which increases efficiency at
light loads to reduce the power consumption of the backup
battery. To operate in FPWM mode, uncheck BST_SKIP
in the 0x04 CONTROL register in the GUI. To guarantee
FPWM operation across all load conditions, R4 should be
switched to 250Ω. In addition, for IC options with boost
output voltages greater than or equal to 8V, the inductor
(L1) should be increased to accommodate the larger ripple
current. A 2.2µH inductor is sufficient for the 12V option,
which can be used for lower output voltages as well.
V
BBAT+
R
I
=
CHGR_CC
If the resistor value is too low, the charger may become
current limited and will automatically switch to CV mode.
State-of-Health (SOH) Details
The SOH function allows the IC to determine the condition
of the backup battery based on the output impedance.
Ordering Information
SOH Test Current
PART
TYPE
EV Kit
Test current used by the SOH system to determine the
battery condition can be adjusted using the slider in
the 0x07 SOH register box. The default for the EV kit
is 500mA, which can be changed with the lower slider
(REG_ISINK). To set it in the IC, enable SOH_OVR in the
0x04 CONTROL register box.
MAX20094EVKIT#
MAX20094EVSYS#
EV System
EV Kit
MAX20095EVKIT#
MAX20095EVSYS#
EV System
#Denotes RoHS compliant.
Note: The EV system includes both the EV kit and the
MINIQUSB command module.
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MAX20094/MAX20095 Evaluation Systems
MAX20094/MAX20095 EV Kits Bill of Materials
REF DESIGNATORS
QTY
VALUE
DESCRIPTION
MFG PART NO.
AVB, AVI, NTC, SCL, SDA, EN1B, IMON, VBIAS, BUBTRIG,
STATUSB, MINIQ_VL, MINIQ_SCL, MINIQ_SDA
TEST POINT; PIN DIA=0.1IN; TOTAL LENGTH=0.3IN; BOARD HOLE=0.04IN; RED; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;
RECOMMENDED FOR BOARD THICKNESS=0.062IN; NOT FOR COLD TEST
13
―
5000
CAPACITOR; SMT (0603); CERAMIC; 1UF; 6.3V; TOL=10%; MODEL=GRM SERIES; TG=-55 DEGC TO +125 DEGC; TC=X7R; NOT
RECOMMENDED FOR NEW DESIGN-USE 20-0001u-63
C1, C22
2
1.0UF
GRM188R70J105KA01; CL10B105KQ8NNNC
C2
C3
1
1
3900PF
100PF
CAPACITOR; SMT (0402); CERAMIC CHIP; 3900PF; 50V; TOL=10%; TG=-55 DEGC TO +125 DEGC; TC=X7R
CAPACITOR; SMT (0402); CERAMIC CHIP; 100PF; 50V; TOL=2%; TG=-55 DEGC TO +125 DEGC; TC=C0G
C0402X7R500-392KNE; GRM155R71H392KA01
C1005C0G1H101G050
C4, C13, C17, C21
4
0.1UF
CAPACITOR; SMT (0402); CERAMIC CHIP; 0.1UF; 50V; TOL=10%; TG=-55 DEGC TO +125 DEGC; TC=X7R
CGA2B3X7R1H104K; C1005X7R1H104K050BB; GRM155R71H104KE14
C5-C8
C9,10
C11
4
2
1
4.7UF
330UF
2.2UF
CAPACITOR; SMT (1206); CERAMIC CHIP; 4.7UF; 50V; TOL=10%; MODEL=; TG=-55 DEGC TO +125 DEGC; TC=X7R
CAPACITOR; SMT; ALUMINUM-ELECTROLYTIC; 330UF; 35V; TOL=20%
GRM31CR71H475KA12
EEE-FK1V331GP
CAPACITOR; SMT (0805); CERAMIC CHIP; 2.2UF; 50V; TOL=10%; MODEL=; TG=-55 DEGC TO +125 DEGC; TC=X7R
C2012X7R1H225K
C12
1
10UF
CAPACITOR; SMT (1206); CERAMIC CHIP; 10UF; 16V; TOL=20%; MODEL=C SERIES; TG=-55 DEGC TO +125 DEGC; TC=X7R
C3216X7R1C106M160AC
C14, C23
C15
1
1
1
2
2.2UF
Open
2.2UF
Open
CAPACITOR; SMT (0603); CERAMIC CHIP; 2.2UF; 25V; TOL=10%; TG=-55 DEGC TO +125 DEGC; TC=X7S
GRM188C71E225KE11
―
―
C16
CAPACITOR; SMT (0603); CERAMIC; 2.2UF; 6.3V; TOL=10%; TG=-55 DEGC TO +125 DEGC; TC=X7R; AUTO
CGA3E1X7R0J225K080AC
C18, C19
―
―
C20
1
680PF
CAPACITOR; SMT (0402); CERAMIC CHIP; 680PF; 50V; TOL=2%; TG=-55 DEGC TO +125 DEGC; TC=C0G
GRM1555C1H681GA01 C1005C0G1H681G050
D1
D2
1
1
―
―
DIODE; SCH; SCHOTTKY DIODE; SMT (SOD-323); PIV=30V; IF=0.2A
DIODE; RECT; SMC; PIV=600V; IF=4A
BAT54H
MURS360T3G
GND1-GND5, BBAT+, VDDIO, VSUP1, MBATT1, MBATT2
10
―
EVK KIT PARTS; MAXIM PAD; WIRE; NATURAL; SOLID; WEICO WIRE; SOFT DRAWN BUS TYPE-S; 20AWG
9020 BUSS
JU1
JU2
1
1
5
―
―
―
CONNECTOR; FEMALE; THROUGH HOLE; BREAKAWAY HEADER; RIGHT ANGLE; 20PINS
PPTC102LJBN-RC
PBC10SAAN
CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT; 10PINS; -65 DEGC TO +125 DEGC
CONNECTOR; THROUGH HOLE; TSW SERIES; SINGLE ROW; STRAIGHT; 2PINS; -55 DEGC TO +105 DEGC
JU3-JU7
TSW-102-07-T-S
L1
L2
1
1
680NH
10UH
INDUCTOR; SMT; SHIELDED; 680NH; TOL=+/-20%; 25A
INDUCTOR; SMT; SHIELDED; 10UH; TOL=+/-20%; 5.4A
IHLP2525CZERR68M01
IHLP3232DZER100M11
M1
M2
M3
M4
1
1
1
1
―
―
―
―
TRAN; AUTOMOTIVE DUAL N-CHANNEL 40V (D-S) 175 DEGC MOSFET; NCH; SO-8L; PD-(48W); I-(30A); V-(40V)
SQJ912AEP-T1_GE3
43650-0322
CONNECTOR; FEMALE; SMT; MICRO FIT 3.0 VERTICAL HEADER; 3MM PITCH; SINGLE ROW; WITH PCB PRESSFIT METAL
RETENTION CLIP; STRAIGHT; 3PINS
TRAN; AUTOMOTIVE P-CHANNEL TRENCHFET POWER MOSFET; PCH; POWERPAK1212-8; PD-(62.5W); I-(-16A); V-(-40V)
TRAN; AUTOMOTIVE P-CHANNEL TRENCHFET POWER MOSFET; PCH; SO-8; PD-(83W); I-(-40A); V-(-40V)
SQS401EN-T1-GE3
SQJ443EP-T1-GE3
R1
R2
1
1
49.9k
499
RESISTOR; 0402; 49.9K; 1%; 100PPM; 0.0625W; THICK FILM
RESISTOR; 0402; 499 OHM; 1%; 100PPM; 0.0625W; THICK FILM
CRCW040249K9FK; 9C04021A4992FLHF3
CRCW0402499RFK
R3, R4
2
100
RESISTOR; 0402; 100 OHM; 0%; JUMPER; 0.2W; THICK FILM
CRCW0402100RFK; 9C04021A1000FL; RC0402FR-07100RL
R5
1
2
0.003
1K
RESISTOR; 1206; 0.003 OHM; 1%; 150PPM; 1W; METAL FILM
RESISTOR; 0402; 1K; 1%; 100PPM; 0.0625W; THICK FILM
WSLP12063L000F
R6, R13
CRCW04021K00FK; RC0402FR-071KL
R7, R8, R14
R9
3
1
0
RESISTOR; 0402; 0 OHM; 0%; JUMPER; 0.2W; THICK FILM
CRCW04020000Z0EDHP
Open
―
―
R10
1
2
0.2
RESISTOR; 0603; 0.2 OHM; 1%; 200PPM; 0.10W; THICK FILM
RESISTOR; 0402; 10K OHM; 5%; 200PPM; 0.063W; THICK FILM
CRL0603-FW-R200ELF
CRCW040210K0JN
R11, R12
10K
U1
1
MAX20094 EVKIT PART-IC; CTRL; BACKUP BATTERY CHARGER AND BOOST CONTROLLER; QFN28-EP; PACKAGE CODE: T2855Y-5C, 2.2MHz MAX20094ATIA/VY+
MAX20095 EVKIT PART-IC; CTRL; BACKUP BATTERY CHARGER AND BOOST CONTROLLER; QFN28-EP; PACKAGE CODE: T2855Y-5C, 2.2MHz MAX20095ATIC/VY+
U1
1
1
―
―
PCB: MAX20094 EVKIT#
MAX20094EVKIT#
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MAX20094/MAX20095 Evaluation Systems
MAX20094 EV Kit Schematic
A
K
+
A
K
+
M B A T T 2
D
G
S
D
S
G
D
S
G
I H L P 2 5 2 5 C Z E R R 6 8 M 0 1
2
1
L 1
B S T
S C L
2
M I N I Q _ S C L
E P
2 9
1
C S N
C S P
C O M P
J U 6
2 2
C S P
6 8 0 P F
C 2 0
4 9 . 9 K
G 1
1 4
1 3
1 2
1 1
2 3
C O M 2 P 4
I M O N 2 5
B I A S 2 6
2 7
3 9 0 0 P F
S D A
2
M I N I Q _ S D A
N C
C 2
4 9 9 R 1
1
S C L
S D A
I M O N
B I A S
R 2
J U 5
1 . 0 U F C 1
V D D I O
1 0
A G N D
B A T T S
V D D I O
E N 1 B
9
2 8
2
1
B U B T R I G
8
J U 4
3
2
1
5
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MAX20094/MAX20095 Evaluation Systems
MAX20095 EV Kit Schematic
A
K
+
A
K
+
M B A T T 2
D
G
S
D
S
G
D
S
G
I H L P 2 5 2 5 C Z E R R 6 8 M 0 1
2
1
L 1
B S T
S C L
2
M I N I Q _ S C L
E P
1
C S N
C S P
C O M P
J U 6
C S P
C O M P
6 8 0 P F
C 2 0
4 9 . 9 K
G 1
3 9 0 0 P F
S D A
2
M I N I Q _ S D A
N C
C 2
4 9 9 R 1
1
S C L
I M O N
B I A S
I M O N
B I A S
R 2
S D A
J U 5
1 . 0 U F C 1
V D D I O
E N 1 B
B U B T R I G
A G N D
B A T T S
V D D I O
2
1
J U 4
3
2
1
5
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MAX20094/MAX20095 Evaluation Systems
MAX20094/MAX20095 EV Kits PCB Layouts
MAX20094 EV Kit Component Placement Guide—Top (also applies to the MAX20095 EV Kit)
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MAX20094/MAX20095 Evaluation Systems
MAX20094/MAX20095 EV Kits PCB Layouts (continued)
MAX20094 EV Kit Component Placement Guide—Bottom (also applies to the MAX20095 EV Kit)
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MAX20094/MAX20095 Evaluation Systems
MAX20094/MAX20095 EV Kits PCB Layouts (continued)
MAX20094 EV Kit PCB Layout—Internal 2 (also applies to the MAX20095 EV Kit)
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MAX20094/MAX20095 Evaluation Systems
MAX20094/MAX20095 EV Kits PCB Layouts (continued)
MAX20094 EV Kit PCB Layout—Internal 3 (also applies to the MAX20095 EV Kit)
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MAX20094/MAX20095 Evaluation Kits/
MAX20094/MAX20095 Evaluation Systems
Revision History
REVISION REVISION
PAGES
CHANGED
DESCRIPTION
NUMBER
DATE
0
1
2
3
4
5
8/17
Initial release
Added missing Ordering Information table
—
5
8/17
1/18
1/18
Added MAX20095EVKIT# and MAX20095EVSYS# to Ordering Information table
Added MAX20095 EV kit and MAX20095 EV system to entire data sheet
Replaced MAX20094 and MAX20095 schematics
5
1–13
7, 8
5
3/18
3/18
Updated the Ordering Information table
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.
©
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
2018 Maxim Integrated Products, Inc.
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