MAX25610EVKIT [MAXIM]
MAX25610 Evaluation Kit;
| 型号： | MAX25610EVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | MAX25610 Evaluation Kit |
| 文件： | 总10页 (文件大小：496K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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Evaluates: MAX25610A
MAX25610 Evaluation Kit
General Description
Quick Start
The MAX25610 evaluation kit (EV kit) provides a proven
design to evaluate the MAX25610A automotive high-volt-
age, high-brightness LED (HB LED) controller. The EV kit
is set up for buck-boost configurations and operates from
a 5V to 18V DC supply voltage. The EV kit is configured
to deliver up to 1.1A to one string of LEDs. The total volt-
age of the string can vary from 3V to 16V. The anode of
the LED string should go to the LED+ terminal and the
cathode should go to the LEDEXT- terminal.
Required Equipment
●
●
●
●
MAX25610 EV kit
12V, 5A DC power supply
A series-connected LED string rated for at least 1.5A
Oscilloscope with a current probe
Procedure
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation:
Benefits and Features
● 5V to 18V Input Voltage Range
● Demonstrates Analog Dimming Control, Digital
Dimming Control
● Demonstrates External and Internal Current Sensing
● Demonstrates LED Short and Open Protection
● Proven PCB Layout
Caution: Do not turn on power supply until all con-
nections are made.
1) Verify that all jumpers are in their default positions,
as shown in Table 1.
2) Connect the positive terminal of the 12V supply to
the V Board PCB pad and the negative terminal to
IN_
the GND_Board PCB pad.
● Fully Assembled and Tested
3) Connect the LED string across the LED+ and LE-
DEXT- PCB pads on the EV kit. The anode of the
LED string should go to the LED+ PCB pad and the
cathode of the LED string should go to the LEDEXT-
PCB pad.
Ordering Information appears at end of data sheet.
4) Clip the current probe on the wire connected to the
LED string.
5) Turn on the DC power supply.
6) Verify that the LEDs illuminate.
7) Verify that the oscilloscope displays approximately 1A.
319-100359; Rev 0; 4/19
Evaluates: MAX25610A
MAX25610 Evaluation Kit
PWM Dimming
Detailed Description
The EV kit demonstrates the PWM dimming feature of the
MAX25610A using either an external PWM signal or a DC
voltage at the PWMDIM pin.
The MAX25610 evaluation kit (EV kit) provides a proven
design to evaluate the MAX25610A automotive high-volt-
age, high-brightness LED (HB LED) controller. The EV kit
is set up for buck-boost configurations and operates from
a 5V to 18V DC supply voltage. The EV kit is configured
to deliver up to 1.1A to one string of LEDs. The total volt-
age of the string can vary from 3V to 16V. The anode of
the LED string should go to the LED+ terminal and the
cathode should go to the LEDEXT- terminal.
Analog-to-PWM dimming:
Keep J2 open and J7 closed as described in Table 1 and
remove the 0.1µF C8 capacitor. PWM dimming duty cycle
is set by the voltage at PWMDIM between 0.2V (0% duty)
and 3V (100% duty). Alternatively, drive the PWMDIM
test point with an external DC source. PWMDIM voltages
greater than 3V set the dimming duty cycle to 100%.
Analog Dimming Control (REFI)
When J1 is closed, the LED current is set by external
current sensing. The equation to set the LED current is
as follows:
External PWM dimming:
Keep J2 open and J7 open. Install the 0.1µF C8 capacitor
(installed by default). Connect an external PWM signal to
the PWMDIM test point. Vary the duty cycle to increase
or decrease the intensity of the HB LED string. The
PWMDIM input of the device has a 2V (max) rising thresh-
old and a 0.4V (min) falling threshold, and is compatible
with 3.3V and 5V logic-level signals.
VREFI - 200mV
I
=
LED
6.67× RLED
In the case of the EV kit, ILED is set to 1A.
When J1 is open, the LED current is set by internal cur-
rent sensing. The equation to set the LED current is I
LED
= 13125/R
.
REFI
Table 1. MAX25610 EV Kit Jumper Descriptions
JUMPER
SHUNT POSITION
DESCRIPTION
For external current sense. The voltage on the REFI pin is adjusted from 0.2V to 1.2V to set
the LED current as follows:
Closed*
I
= (V
−0.2)/6.67 x R
REFI LED
LED
J1
For internal current sense. The potentiometer R23 is adjusted for setting the LED current as
follows:
Open
I
= 13125/R
REFI
LED
1–2
Connects PWMDIM pin to GND and no switching
Connects PWMDIM pin to V (Internal 5V) for 100% duty
J2
J4
J7
2–3*
EE
Connect an external clock source to perform PWM dimming with J7 open.
With J7 closed, the potentiometer R34 is adjusted to set the DC voltage on the PWMDIM
pin to perform analog PWM dimming. The capacitor C8 must be removed to perform analog
PWM dimming.
Open
See the IC datasheet for PWM frequency setting.
1–2*
2–3
External current sense
Internal current sense
Open*
Closed
For external PWM dimming
For analog PWM dimming
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Evaluates: MAX25610A
MAX25610 Evaluation Kit
Current Sensing
Faults
External current sensing:
Open and Short LEDs:
Keep J1 closed and J4 closed in the 1–2 position, as
described in Table 1, and adjust the potentiometer R23 to
set the LED current.
When the IC detects the open or short fault conditions
of the LEDs, the fault pin is pulled low. The fault pin also
goes low when there is an overtemperature condition. The
fault pin is an active-low, open-drain output.
Internal current sensing:
Short to Battery:
Keep J1 open and J4 closed in the 2–3 position, as
described in Table 1, and adjust the potentiometer R23 to
set the LED current.
The EV kit has a latch circuit with a switch for protection
when there is a short on the LEDEXT- wire to battery
positive voltage.
Ordering Information
PART
TYPE
MAX25610EVKIT#
EV Kit
#Denotes RoHS compliance.
Maxim Integrated
│ 3
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Evaluates: MAX25610A
MAX25610 Evaluation Kit
MAX25610 EV Kit Bill of Materials
ITEM
QTY
REF DES
MFG PART #
MANUFACTURER
MURATA;SAMSUNG
VALUE
DESCRIPTION
CAPACITOR; SMT (1210); CERAMIC CHIP;
10µF; 50V; TOL = 10%; TG = -55°C TO +125°C;
TC = X7R
GRM32ER71H106KA12; CL32B106KBJNNN;
UMJ325KB7106KMH; 12105C106K4Z2A
1
5
C2, C12, C14, C20, C21
10µF
ELECTRONICS;TAIYO YU
CAPACITOR; SMT (0603); CERAMIC CHIP;
2.2µF; 25V; TOL = 10%; TG = -55°C TO +125°C;
TC = X7S
2
3
3
1
C3, C5, C37
GRM188C71E225KE11
MURATA
2.2µF
CAPACITOR; SMT; 0603; CERAMIC; 0.1µF;
25V; 10%; X7R; -55°C to + 125°C;
±15% from -55°C to +125°C; NOT
RECOMMENDED FOR NEW DESIGN USE - 20-
000u1-01
885012206071;CGJ3E2X7R1E104K080AA;
C1608X7R1E104K080AA;C0603C104K3RAC;
GRM188R71E104KA01;C1608X7R1E104K
WURTH ELECTRONICS INC;
TDK;TDK;KEMET
C4
0.1µF
CAPACITOR; SMT (0603); CERAMIC CHIP;
1000PF; 100V; TOL = 5%; TG = -55°C TO
+125°C; TC = C0G
4
5
6
7
8
9
1
1
2
1
1
1
C6
C1608C0G2A102J080AA
C0603C102M3GAC
TDK
1000PF
0.001µF
0.1µF
CAPACITOR; SMT (0603); CERAMIC CHIP;
0.001µF; 25V; TOL = 20%; MODEL = C SERIES;
TG = -55°C TO +125°C
C7
KEMET
CAPACITOR; SMT (0603); CERAMIC CHIP;
0.1µF; 25V; TOL = 10%; TG = -55°C TO +150°C;
TC = X8R
C8, C36
C9
C1608X8R1E104K080AA
ECH-U1C221JX5
TDK
CAPACITOR; SMT (0603); CERAMIC CHIP;
220PF; 50V; TOL = 5%; MODEL = PPS; TG = -
55°C TO +85°C; TC = ±
PANASONIC
220PF
0.22µF
0.22µF
CAPACITOR; SMT (0603); CERAMIC CHIP;
0.22µF; 25V; TOL = 10%; TG = -55°C TO +125°C;
TC = X7R
C0603C224K3RAC;GMC10X7R224K25;
GRM188R71E224KA88;C1608X7R1E224K080AC
C10
C11
KEMET;MURATA;MURATA;TDK
TDK;MURATA
CAPACITOR; SMT (0603); CERAMIC CHIP;
0.22µF; 50V; TOL = 10%; TG = -55°C TO +125°C;
TC = X7R
C1608X7R1H224K080; GRM188R71H224KAC4
GRM32ER72A225KA35;
CGA6N3X7R2A225K230AB;
CC1210KKX7R0BB225;HMK325B7225KM
CAPACITOR; SMT (1210); CERAMIC CHIP;
2.2µF; 100V; TOL = 10%; MODEL = GRM
SERIES; TG = -55°C to +125°C; TC = X7R
MURATA;TDK;YAGEO;
TAIYO YUDEN
10
2
C13, C19
2.2µF
EVKIT PART-CAPACITOR; SMT (1206);
CERAMIC CHIP; 1µF; 100V; AUTO
11
12
1
1
C17
C30
YFF31AH2A105M
EEH-ZA1H101P
TDK
1µF
CAPACITOR; SMT (CASE_G); ALUMINUM-
ELECTROLYTIC; 100µF; 50V; TOL = 20%
PANASONIC
100µF
INDUCTOR; SMT (1210); FERRITE-BEAD;
52; TOL = ±25%; 0.4A; -40°C TO +125°C
13
14
1
7
FB1
HF70ACB322513
TDK
52
TEST POINT; PIN DIA = 0.125IN; TOTAL
LENGTH = 0.35IN; BOARD HOLE = 0.063IN;
WHITE; PHOSPHOR BRONZE WIRE SILVER
PLATE FINISH; RECOMMENDED FOR BOARD
THICKNESS = 0.062IN; NOT FOR COLD TEST
FLTB, OUTOVP, PWMDIM,
PWMFRQ, REFI, VCC, VEE
5007
KEYSTONE
N/A
GND_BB, GND_BOARD,
IC_GND, IC_GND_2, LED+,
LEDEXT-, VIN_BOARD,
VIN_NO_EMI
EVK KIT PARTS; MAXIM PAD; WIRE;
NATURAL; SOLID; WEICO WIRE; SOFT
DRAWN BUS TYPE-S; 20AWG
15
8
9020 BUSS
WEICO WIRE
MAXIMPAD
CONNECTOR; MALE; THROUGH HOLE;
BREAKAWAY; STRAIGHT THROUGH; 2PINS; -
65°C TO +125°C
16
17
18
2
2
1
J1, J7
J2, J4
L1
PCC02SAAN
SULLINS
PCC02SAAN
PCC03SAAN
33µH
CONNECTOR; MALE; THROUGH HOLE;
BREAKAWAY; STRAIGHT THROUGH; 3PINS; -
65°C TO +125°C
PCC03SAAN
SULLINS
INDUCTOR; SMT; FERRITE BOBBIN CORE;
33µH; TOL = ±20%; 3.1A; -40°C TO +125°C
MSS1278T-333ML
COILCRAFT
INDUCTOR; SMT; FERRITE BOBBIN CORE;
4.7µH; TOL = ±0.2; 6.2A; -40°C TO +125°C
19
20
21
22
1
4
1
1
L2
MSS1278T-472ML
9032
COILCRAFT
4.7µH
MACHINE FABRICATED; ROUND-THRU
9032 HOLE SPACER; NO THREAD; M3.5; 5/8IN;
NYLON
MH1-MH4
Q1
KEYSTONE
TRAN; N-CHANNEL ENHANCEMENT MODE
MOSFET; NCH; SOT-23; PD-(0.8W); I-(2A); V-
(60V)
DMN6075S
MMBT2907A
DIODES INCORPORATED
FAIRCHILD SEMICONDUCTOR
DMN6075S
TRAN; SMALL SIGNAL TRANSISTOR; PNP;
SOT-23; PD-(0.35W); IC-(-0.6A);
VCEO-(-60V)
Q4
MMBT2907A
TRAN; NPN; SOT-23; PD-(0.225W);
I-(0.6A); V-(30V)
23
24
1
1
Q5
R2
MMBT2222LT1G
CSR1206FTR130
ON SEMICONDUCTOR
MMBT2222LT1G
RESISTOR; 1206; 0.13 Ω; 1%; 100PPM;
0.5W; THICK FILM
STACKPOLE ELECTRONICS INC
0.13
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Evaluates: MAX25610A
MAX25610 Evaluation Kit
MAX25610 EV Kit Bill of Materials (continued)
RESISTOR; 0603; 10K Ω; 1%; 100PPM;
0.0125W; THICK FILM
26
27
28
29
2
2
1
1
R4, R8
R5, R33
R6
CHPHT0603K1002FGT
CRCW060351K1FK;ERJ-3EKF5112
ERJ-3EKF1782
VISHAY SFERNICE
VISHAY DALE;PANASONIC
PANASONIC
10K
RESISTOR; 0603; 51.1K; 1%; 100PPM;
0.10W; THICK FILM
51.1K
17.8K
RESISTOR; 0603; 17.8K Ω; 1%;
100PPM; 0.1W; THICK FILM
RESISTOR; 0603; 60.4 Ω; 1%; 100PPM;
0.10W; THICK FILM
R7
CRCW060360R4FK
VISHAY DALE
60.4
CRCW0603100KFK;RC0603FR-07100KL;
RC0603FR-13100KL;ERJ-3EKF1003;
AC0603FR-07100KL
VISHAY DALE;YAGEO;
YAGEO;PANASONIC
RESISTOR; 0603; 100K; 1%; 100PPM;
0.10W; THICK FILM
30
1
R9
100K
RESISTOR; 0603; 61.9K Ω; 1%; 100PPM;
0.10W; THICK FILM
31
32
33
34
1
1
2
1
R10
CRCW060361K9FK
VISHAY DALE
61.9K
10K
1K
VISHAY DALE;KOA SPEER
ELECTRONICS
RESISTOR; 0603; 10K Ω; 0.1%; 25PPM;
0.1W; THICK FILM
R11
TNPW060310K0BE; RN731JTTD1002B
ERJ-3GEYJ102
RESISTOR; 0603; 1K Ω; 5%; 200PPM;
0.10W; THICK FILM
R13, R14
R15
PANASONIC
PANASONIC
RESISTOR; 0603; 4.7K Ω; 5%; 200PPM;
0.10W; THICK FILM
ERJ-3GEYJ472
4.7K
RESISTOR; THROUGH-HOLE-RADIAL
LEAD; 100kΩ; 10%; 100PPM; 0.5W; MOLDER
CERAMIC OVER METAL FILM
35
36
37
2
1
1
R23, R34
R24
3296W-1-104LF
301-10K-RC
BOURNS
XICON
100K
10K
RESISTOR, 0603, 10K Ω, 5%, 200PPM,
1/16W, THICK FILM
EVKIT PART - IC; CONV; SYNCHRONOUS
BUCK AND BUCK BOOST LED DRIVER/DC-DC
CONVERTER; TSSOP16-EP
U1
MAX25610
MAX25610
MAXIM
MAXIM
MAX25610
PCB
38
1
PCB
PCB:MAX25610
TOTAL
72
DO NOT PURCHASE(DNP)
ITEM
QTY
REF DES
MFG PART #
MANUFACTURER
VALUE
DESCRIPTION
CAPACITOR; SMT (0603); CERAMIC CHIP;
2.2µF; 25V; TOL = 10%; TG = -55°C TO +125°C;
TC = X7S
1
1
C1
GRM188C71E225KE11
MURATA
2.2µF
CAPACITOR; SMT (1206); CERAMIC CHIP;
1000PF; 50V; TOL = 10%; MODEL = X7R;
TG = -55°C TO +125°C; TC = +
2
1
C18
C1206C102K5RAC
KEMET
1000PF
DIODE; SCH; SMT (POWERDI-123);
PIV = 100V; IF = 2A
3
4
5
1
1
1
D1
D3
R1
DFLS2100
DIODES INCORPORATED
DIODES INCORPORATED
STACKPOLE ELECTRONICS INC
DFLS2100
B380-13-F
B380-13-F
DIODE; SCH; SMC; PIV = 80V; IF = 3A
RESISTOR; 1206; 0.13Ω; 1%; 100PPM;
0.5W; THICK FILM
CSR1206FTR130
0.13
2
RESISTOR, 1206, 2Ω, 1%, 100PPM,
0.25W, THICK FILM
6
1
R25
R38
CRCW12062R00FK
CRCW06030000Z0
VISHAY DALE
VISHAY DALE
RESISTOR; 0603; 0Ω; 0%; JUMPER;
0.1W; THICK FILM
7
1
7
0
TOTAL
PACKOUT (These are purchased parts but not assembled on PCB and will be shipped with PCB)
ITEM
QTY
REF DES
MFG PART #
MANUFACTURER
VALUE
DESCRIPTION
TOTAL
0
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Evaluates: MAX25610A
MAX25610 Evaluation Kit
MAX25610 EV Kit Schematics
2
1
3
2
1
3
2
1
2
1
2
3
1 7
3
2
C
A
S
D
G
1
+
1
2
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Evaluates: MAX25610A
MAX25610 Evaluation Kit
MAX25610 EV Kit PCB Layout Diagrams
1”
MAX25610 EV Kit Component Placement Guide—Top Silkscreen
1”
MAX25610 EV Kit PCB Layout—Top View
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Evaluates: MAX25610A
MAX25610 Evaluation Kit
MAX25610 EV Kit PCB Layout Diagrams (continued)
1”
MAX25610 EV Kit PCB Layout—Internal 2
1”
MAX25610 EV Kit PCB Layout—Internal 3
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│ 8
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Evaluates: MAX25610A
MAX25610 Evaluation Kit
MAX25610 EV Kit PCB Layout Diagrams (continued)
1”
MAX25610 EV Kit PCB Layout—Bottom View
1”
MAX25610 EV Kit Component Placement Guide—Bottom Silkscreen
Maxim Integrated
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Evaluates: MAX25610A
MAX25610 Evaluation Kit
Revision History
REVISION REVISION
PAGES
CHANGED
DESCRIPTION
NUMBER
DATE
0
4/19
Initial release
—
For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.
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.
2019 Maxim Integrated Products, Inc.
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