MAX25200 [MAXIM]
4.5V to 42V Input Supply Range;
| 型号： | MAX25200 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | 4.5V to 42V Input Supply Range |
| 文件： | 总7页 (文件大小：881K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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Evaluates: MAX25200, MAX25201
MAX25201 Evaluation Kit
General Description
Quick Start
The MAX25201 evaluation kit (EV kit) is a fully assembled
and tested application circuit that simplifies the evaluation
of the MAX25201 400kHz, 36V boost controller. All
installed components are rated for the automotive
temperature range. Various test points and jumpers are
included for evaluation.
Required Equipment
●
●
●
●
MAX25201 EV kit
30V, 25A DC power supply (PS1)
One voltmeter (VM1)
One electronic load, 200W capable (EL1)
The standard EV kit comes with the installed MAX25201
(24V, 400kHz) and can also be used to evaluate other
MAX25201 variants with minimal component changes
shown in the MAX25201 EV Kit Bill of Materials.
Procedure
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation.
Caution: Do not turn on the power supply until all
connections are completed.
Benefits and Features
● 4.5V to 42V Input Supply Range
1) Verify that all jumpers are in their default positions as
shown in Table 1.
● Input Voltage Range Extended down to 2V after
Initial Startup
2) Preset the output voltage of PS1 to 14V. Disable
PS1 output.
● Boost Output Voltages Adjustable Between 4.5V and
3) Turn off the EL1 and preset the load to 4A.
4) Connect the positive terminal of EL1 to OUT; connect
the negative terminal of EL1 to GND2.
5) Connect the positive terminal of PS1 to the SUP;
connect the negative terminal of PS1 to GND1.
6) Connect the positive terminal of VM1 to OUT;
connect the negative terminal of VM1 to GND6.
7) Enable the power supply output.
60V via External Resistors
● Boost Fixed Output Voltage Available with Minor
Component Changes
● ±2% Output Voltage Accuracy
● Frequency-Synchronization Input
● Enable Input
● Voltage-Monitoring PGOOD Output
8) Enable the electronic load EL1.
9) Verify that the voltmeter on OUT measures
approximately 24V.
● Jumpers and Test Points on Key Nodes for Simplified
Evaluation
● Proven PCB Layout
● Fully Assembled and Tested
Ordering Information appears at end of data sheet.
319-100422; Rev 0; 8/19
Evaluates: MAX25200, MAX25201
MAX25201 Evaluation Kit
Table 1. Default Jumper Settings
JUMPER
SHUNT POSITION
FUNCTION
J1
J2
J3
J4
1-2
1-2
Boost controller enabled
FSYNC is pulled to V
enabling FPWM mode
BIAS
PGOOD is pulled up to V
Installed
1-2
when OUT is in regulation
BIAS
OUT is shorted around the 20Ω resistor in the feedback network used for frequency analysis
voltage drops below 92.5% (typ) of its nominal regulated
voltage.
Detailed Description
The MAX25201 EV kit provides a fully developed and
proven layout for evaluating all variants of the MAX2501
family of current-mode-controlled boost controller ICs.
The controller accepts supply voltages as high as 36V
and supply transients up to 40V.
To obtain logic signals, pull up PGOOD to BIAS by
installing the shunt on jumper J3.
The EV kit also provides an LED to monitor PGOOD
visually. The LED illuminates when PGOOD is low,
implying the converter has fallen out of regulation.
Switching Frequency and External
Synchronization
Setting the Output Voltage in the
Boost Converter
The EV kit comes assembled to provide 24V regulation
on OUT. To adjust the output voltage, remove and replace
appropriate resistors in positions R9 and R10 according
to the following equation:
The IC can operate in two modes: forced-PWM or skip
mode. Skip mode offers improved efficiency over PWM
during light-load conditions. When FSYNC is pulled low,
the device operates in skip mode for light loads, and in
PWM mode for larger loads. When FSYNC is pulled high,
the device is forced to operate in PWM across all load
conditions.
V
OUT1
R9 = R10
−1
V
The FSYNC pin can be used to synchronize the switching
frequency of the IC to an external clock source by
applying an external clock signal ranging from 220kHz to
2.2MHz. The device is forced to operate in PWM mode
when FSYNC is connected to a clock source.
FB
where V = 1V (typ) and R10 = 5kΩ.
FB
Evaluating Other Variants
The MAX25201EVKIT# comes installed with the
synchronous boost variant (MAX25201ATEA/VY+).
Boost Output Monitoring (PGOOD)
Maxim Integrated offers additional variations of the
MAX25201 that include spread-spectrum options. See
the MAX25201 IC Datasheet for part variant details and
contact the factory to request any additional variants.
The EV kit provides an output test point (PGOOD) to
monitor the status of the boost output voltage at OUT. The
PGOOD pin goes to a state of high impedance and pulls
high through a pullup resistor when the respective boost
output voltage rises above 94.5% (typ) of its regulation
voltage. PGOOD pulls low when the respective output
See the MAX25201 EV Kit Bill of Materials to select
componentsforevaluatinghigherfrequencyconfigurations.
Ordering Information
PART
TYPE
MAX25201EVKIT#
#Denotes RoHS compliant.
24V/400kHz EV Kit
Maxim Integrated
│ 2
www.maximintegrated.com
Evaluates: MAX25200, MAX25201
MAX25201 Evaluation Kit
MAX25201 EV Kit Bill of Materials
DESIGNATION
QTY
DESCRIPTION
120uF ±20%, 50V Aluminum electrolytic capacitor (CASE_G)
4.7uF206 ±10%, 50V X7R ceramic capacitor (1)
2.2uF ±10%, 50V X7R ceramic capacitor (0805)
0.022uF ±10%, 100V X7R ceramic capacitor (0603)
0.1uF ±10%, 100V X7S ceramic capacitor (0603)
0.047uF ±10%, 50V X7R ceramic capcitor (0603)
10uF ±10%, 50V X7S ceramic capacitor (1210)
0.1uF ±20%, 16V X7R ceramic capacitor (0402)
Diode, 75V, 0.3A (SOD-323)
MFG PART #
PANASONIC EEH-ZC1H121P
C1, C2, C26, C27, C29
5
C3, C4
2
TDK CGA5L3X7R1H475K160AB
TDK CGA4J3X7R1H225K125AB
TDK CGA3E2X7R2A223K080AA
TDK CGA3E3X7S2A104K080AB
MURATA GCM188R71H473KA55
TDK CGA6P3X7S1H106K250AB
TDK CGA2B1X7R1C104K050BC
DIODES INCORPORATED 1N4148WS-7
LITE-ON ELECTRONICS INC. LTST-C190KRKT
COILCRAFT XAL1010-222ME
C6
1
C8
1
C9
1
C10
1
C11, C12
2
C22
1
D2
1
DS1
1
LED Red, VF=2V,IF=0.025A (SMT)
L1
1
2.2uH ±20%, 20A composite inductor
Q1, Q2, Q3
3
N-Channel FET, 60V, 71A, 61W, (SO-8FL)
0.0015 OHM ±5%, 2W metal film resistor (2512)
91k OHM ± 1%; thick film resistor (0603)
0 OHM ± 0%; thick film resistor (0603)
ON SEMICONDUCTOR NVMFS5C670NLWFAFT1G
ROHM SEMICONDUCTOR PML100HZPJV1L5
VISHAY DALE CRCW060391K0FK
VISHAY DALE CRCW06030000ZS
YAGEO PHYCOMP RC0603FR-0771K5L
VISHAY DALE CRCW06031K00FK
VISHAY DALE CRCW060310K0FK
VISHAY CRCW0603115KFK
R1
1
R2
1
R3, R4, R11, R13
4
R5
R7
R8
R9
R10
R14
U1
-
1
71.5k OHM ±1%, thick film resistor (0603)
1k OHM ±1%, thick film resistor (0603)
10k OHM ±1%, thick film resistor (0603)
115kΩ ± 1%, thick film resistor (0603)
1
1
1
1
4.99kΩ ± 1%, thick film resistor (0603)
VISHAY DALE CRCW06034K99FK
VISHAY DALE CRCW060320R0FK
MAX25201ATEA/VY+
1
20kΩ ± 1%, thick film resistor (0603)
1
36V Synchronous Boost Controller
1
PCB: MAX25201 Evaluation Kit
CHANGES FOR 8V, 2.1MHz
DESIGNATION
QTY
DESCRIPTION
MFG PART #
C1
0
1
2
2
Not Installed
C2
100uF ±20%, 50V Aluminum electrolytic capacitor (CASE_G)
0.015uF ±10%, 50V X7R ceramic capacitor (0603)
4700pF ±5%, 25V C0G ceramic capacitor (0603)
PANASONIC EEE-FP1H101AP
GCM188R71H153KA37
C5, C19
C8, C18
TDK C1608C0G1E472J080AA
C11, C12, C13, C14,
C15, C16
6
10uF ±10%, 50V X7S ceramic capacitor (1210)
TDK CGA6P3X7S1H106K250AB
L1
1
1
1
1
1
1
0.47uH ±20% Composite Inductor
WURTH ELECTRONICS INC. 744314047
SUSUMU CO LTD. KRL6432E-M-R003-F
VISHAY DALE CRCW060314K7FK
VISHAY DALE CRCW06031R05FKEA
VISHAY DALE CRCW06031212FK
PANASONIC ERJ-3EKF3482
R1
0.003Ω± 1%, 3W, metal foil resistor (2512)
14.7kΩ± 1%, thick film resistor (0603)
1.05Ω± 1%, thick film resistor (0603)
12.1KΩ± 1%, thick film resistor (0603)
34.8kΩ ± 1%, thick film resistor (0603)
R2
R3, R4, R11, R13
R5
R9
CHANGES FOR MAX25200
DESCRIPTION
DESIGNATION
QTY
MFG PART #
Q2
D3
U1
0
1
1
Not Installed
Schottky Diode, 60V, 10A (SOT1289)
36V Asynchronous Boost Controller
Nexperia PMEG060V100EPD
MAX25200ATEA/VY+
Maxim Integrated
│ 3
www.maximintegrated.com
Evaluates: MAX25200, MAX25201
MAX25201 Evaluation Kit
MAX25201 EV Kit Schematic
+
+
A
A
K
K
+
A
A
K
K
+
+
+
A
K
A
K
1
3
D
G
S
4
D
G
S
4
A
K
3
2
1
3
2
1
5
5
E P
1 7
1
3
D L
L X
D H
1 2
P G O O D
7
1 3
1 4
1 5
M O D E / F S Y N C
8
C O M P
5
B S T
B I A S
1 0
1
3
+
A
A
K
K
+
Maxim Integrated
│ 4
www.maximintegrated.com
Evaluates: MAX25200, MAX25201
MAX25201 Evaluation Kit
MAX25201 EV PCB Layouts
MAX25201 EV Kit Silkscreen Top
MAX25201 EV Kit Component Placement - Top
MAX25201 EV Kit Mask Top
MAX25201 EV Kit PCB Layout - Internal Layer 2
Maxim Integrated
│ 5
www.maximintegrated.com
Evaluates: MAX25200, MAX25201
MAX25201 Evaluation Kit
MAX25201 EV PCB Layouts (continued)
MAX25201 EV Kit PCB Layout - Internal Layer 3
MAX25201 EV Kit Component Placement - Bottom
1”
MAX25201 EV Kit Mask Bottom
Maxim Integrated
│ 6
www.maximintegrated.com
Evaluates: MAX25200, MAX25201
MAX25201 Evaluation Kit
Revision History
REVISION REVISION
PAGES
CHANGED
DESCRIPTION
NUMBER
DATE
0
8/19
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.
│ 7
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