MAX17640AEVKIT [MAXIM]
MAX17640 Converters in Application;
| 型号： | MAX17640AEVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | MAX17640 Converters in Application |
| 文件： | 总17页 (文件大小：1698K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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Evaluate: MAX17640
MAX17640A/MAX17640B/
Converters in Application
MAX17640C Evaluation Kits
General Description
Quick Start
The MAX17640A/MAX17640B/MAX17640C evaluation
kits (EV kits) provide proven designs to evaluate the per-
formance of the MAX17640A/MAX17640B/MAX17640C
high-voltage, high-efficiency, synchronous step-down
DC-DC converters. The MAX17640A converter operates
over a 5V to 48V input range and can deliver up to 400mA
at a fixed 3.3V output. The MAX17640B converter oper-
ates over a 7V to 60V input range and can deliver up to
400mA at a fixed 5V output. The MAX17640C converter
operates over a 15V to 60V input range and can deliver
up to 400mA at an adjustable 12V output.
Required Equipment
● One 60V, 400mA DC power supply
● Digital multimeters (DMM)
● Load resistors capable of sinking up to 400mA
(8.25Ω for MAX17640A, 12.5Ω for MAX17640B,
and 30Ω for MAX17640C)
Equipment Setup and Procedure
The EV kits are fully assembled and tested. Follow the
steps to verify and test individual converter operation:
Caution: Do not turn on power supply until all
connections are completed.
The EV kits feature an adjustable input undervoltage-
lockout, open-drain RESET, overcurrent protection,
selectable mode of operation, and thermal shutdown.
Refer to the MAX17640 converter data sheet for a
complete description of the part that should be read in
conjunction with this data sheet before operating these
EV kits.
1) Disable the power supply and set the input power
supply at a valid input voltage.
2) Connect the positive terminal and negative terminal
of the power supply to the VIN pad and its adjacent
PGND pad of the converter under evaluation.
3) Connect the positive terminal of the 400mA (max)
load to the VOUT pad and the negative terminal to the
nearest PGND pad of the corresponding converter.
Features
● Operates up to 60V Input Supply
● Fixed 5V, Fixed 3.3V, and Adjustable 12V Application
4) Connect the DMM across the VOUT pad and the
Circuits
nearest PGND pad.
● Up to 400mA Load Current
5) Verify that the shunts are not installed across pins on
jumper JU101 for MAX17640A, JU201 for MAX17640B
and, JU301 for MAX17640C. See Table 1 for details.
● 500kHz Fixed Switching Frequency
● Enable/UVLO Input, Resistor-Programmable UVLO
Threshold
6) Turn on the input power supply.
● Selectable PWM and PFM Modes of Operation
● Open-Drain RESET Output
7) Verify that the DMMs display the expected terminal
voltages with respect to GND.
● Overcurrent and Overtemperature Protection
● Proven PCB Layout
● Fully Assembled and Tested
● Complies with CISPR32(EN55032)
Class B Conducted and Radiated Emissions
Ordering Information appears at end of data sheet.
319-100682; Rev 1; 3/21
Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
Adjusting Output Voltage
The MAX17640C supports a 0.9V to (0.89 x V )V adjust-
Detailed Description
The MAX17640A/MAX17640B/MAX17640C EV kits are
designed to demonstrate the salient features of the
MAX17640A/MAX17640B/MAX17640C high-voltage,
high-efficiency, synchronous step-down DC-DC convert-
ers. The EV kits consist of typical application circuits of
three different converters. Each of these circuits is electri-
cally isolated from each other and hosted on the same
PCB. Each of these converters can be evaluated for
their performance under different operating conditions by
powering them from their respective input pins.
IN
able output voltage. Output Voltage in the MAX17640C EV
kit is preset to 12V. Output voltage can be programmed
using the feedback-resistive divider (R304 and R305)
from VOUT and GND. For programming the output to a
different voltage, refer to the Adjusting the Output Voltage
section in the MAX17640 datasheet for more details.
Input Capacitor Selection
The input capacitors C106 for the MAX17640A, C206 for
the MAX17640B, and C306 for the MAX17640C, serve
to reduce current peaks drawn from the input power sup-
ply and reduce switching frequency ripple at the input.
Refer to the Input Capacitor section in the MAX17640
datasheet to choose input capacitance. Input capacitor is
chosen to be 1µF/100V for the MAX17640A/MAX17640B/
MAX17640C EV kits.
Enable/Undervoltage Lockout (EN/UVLO)
Programming
The EV kits offer an adjustable input undervoltage-lockout
level feature for the converters. For the MAX17640A
when jumper JU101 is left open, the converter is enabled
when the input voltage rises above 5V. To disable the
MAX17640A, install a shunt across pins 2-3 on jumper
JU101. For the the MAX17640B when jumper JU201
is left open, the converter is enabled when the input
voltage rises above 7V. To disable the MAX17640B,
install a shunt across pins 2-3 on jumper JU201. For
the MAX17640C when jumper JU301 is left open, the
converter is enabled when the input voltage rises above
15V. To disable the MAX17640C, install a shunt across
pins 2-3 on jumper JU301. See Table 1 for jumper set-
tings. Refer to the Setting the Input Undervoltage-Lockout
Level section in the MAX17640 datasheet for more
details.
Table 1. EN/UVLO Jumper Description
(JU101, JU201, and JU301)
SHUNT
POSITION
EN/UVLO PIN
OUTPUT
Connected to the center
nodes of the respective
resistor-dividers (R101 and
R102 for 3.3V application
circuit; R201 and R202
for 5V application circuit;
R301 and R302 for 12V
application circuit)
Programmed
to startup at
desired
input-voltage
level
Not
installed*
If the EN/UVLO pin is driven from an external signal
source, it is recommended that a minimum 1kΩ series
resistance is placed is placed between the signal source
output and the EN/UVLO pin to reduce voltage ringing on
the line.
1–2
2–3
Connected to VIN
Connected to GND
Enabled
Disabled
*Default position
MODE Selection
The MAX17640A/MAX17640B/MAX17640C converters
support PWM and PFM modes of operation. In the EV
kits, leave the jumpers (JU102 for MAX17640A, JU202
for MAX17640B and JU302 for MAX17640C) open for
operating the modules in PFM mode at light load. Install
shunts across positions 1-2 to configure the modules in
PWM mode. See Table 2 for jumper settings. Refer to the
Mode Selection (MODE) section in the MAX17640 data
sheet for more details.
Table 2. MODE Jumper Description
(JU102, JU202, and JU302)
SHUNT
EN/UVLO PIN
Unconnected
OUTPUT
POSITION
Not
installed*
PFM mode of
operation
PWM mode of
operation
1-2
Connected to GND
*Default position
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Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
due to the inductance of the cables. The equivalent series
resistance (ESR) of the electrolytic capacitor helps damp
out the oscillations caused by long input cables.
Output Capacitor Selection
X7R ceramic capacitors are preferred due to their
stability over temperature in industrial applications.
The required output capacitor (C109, C209) for the
MAX17640A and MAX17640B is 22µF/6.3V. The required
Output Capacitor (C309) for the MAX17640C is 22µF/16V.
Refer to the Output Capacitor section in the MAX17640
datasheet for more details.
Electromagnetic Interference (EMI)
Compliance to conducted emissions (CE) standards
requires an EMI filter at the input of a switching power
converter. The EMI filter attenuates high-frequency
currents drawn by the switching power converter and
limits the noise injected back into the input power source.
Hot Plug-In and Long Input Cables
The EV kits provide optional electrolytic capacitors
22µF/100V (C103 for the MAX17640A, C203 for the
MAX17640B, and C303 for the MAX17640C) to dampen
input voltage peaks and oscillations that may arise dur-
ing hot-plug-in and/or due to long input cables. These
capacitors limit the peak voltage at the input of the DC-DC
converters when the EV kits are powered directly from a
precharged capacitive source or an industrial backplane
PCB. Long input cables, between the input power source
and the EV kit circuit, can cause input-voltage oscillations
Use of EMI filter components as shown in the EV kit
schematic results in lower conducted emissions, below
CISPR32 Class B limits. Manufacturer part numbers of
the EMI filter components are listed as optional BOM.
The EV kits’ PCB layout are also designed to limit
radiated emissions from switching nodes of the power
converter, resulting in radiated emissions below CISPR32
Class B limits. Further, capacitors placed near the input of
the board help in attenuating high-frequency noise.
MAX17640A/MAX17640B/MAX17640C EV Kits Performance Report
MAX17640B
MAX17640A
MAX17640C
EFFICIENCY vs. LOAD CURRENT
EFFICIENCY vs. LOAD CURRENT
EFFICIENCY vs. LOAD CURRENT
toc02
toc01
toc03
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
VIN = 15V
VIN = 7V
VIN = 12V
VIN = 5V
VIN = 24V
VIN = 36V
VIN = 12V
VIN = 24V
VIN = 24V
VIN = 36V
VIN = 48V
VIN = 48V
VIN = 60V
VIN = 36V
VIN = 48V
VIN = 60V
0
40 80 120 160 200 240 280 320 360 400
LOAD CURRENT (mA)
0
40 80 120 160 200 240 280 320 360 400
LOAD CURRENT (mA)
0
40 80 120 160 200 240 280 320 360 400
LOAD CURRENT (mA)
CONDITIONS: FIXED 5V OUTPUT, PWM MODE
CONDITIONS: ADJUSTABLE 12V OUTPUT, PWM MODE
CONDITIONS: FIXED 3.3V OUTPUT, PWM MODE
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Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
MAX17640A/MAX17640B/MAX17640C EV Kits Performance Report (continued)
MAX17640B
EFFICIENCY vs. LOAD CURRENT
MAX17640C
EFFICIENCY vs. LOAD CURRENT
MAX17640A
EFFICIENCY vs. LOAD CURRENT
toc05
toc04
toc06
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
VIN = 48V
VIN = 24V
VIN = 36V
VIN = 48V
VIN = 36V
VIN = 24V
VIN = 12V
VIN = 12V
VIN = 60V
VIN = 60V
VIN = 24V
VIN = 36V
VIN = 48V
VIN = 7V
VIN = 15V
VIN = 5V
1
10
100
1
10
LOAD CURRENT (mA)
100
1
0
0
10
LOAD CURRENT (mA)
100
LOAD CURRENT (mA)
CONDITIONS: FIXED 5V OUTPUT, PFM MODE
CONDITIONS: ADJUSTABLE 12V OUTPUT, PFM MODE
CONDITIONS: FIXED 3.3V OUTPUT, PFM MODE
MAX17640C
OUTPUT VOLTAGE vs. LOAD CURRENT
MAX17640B
OUTPUT VOLTAGE vs. LOAD CURRENT
MAX17640A
OUTPUT VOLTAGE vs. LOAD CURRENT
toc08
toc07
toc09
4.999
4.998
4.997
4.996
4.995
4.994
4.993
4.992
4.991
4.990
4.989
3.303
3.302
3.301
3.300
3.299
3.298
3.297
3.296
3.295
3.294
3.293
12.070
12.066
12.062
12.058
12.054
12.050
12.046
12.042
12.038
12.034
12.030
VIN = 24V
VIN = 48V
VIN = 5V
VIN = 60V
VIN = 24V
VIN = 36V
VIN = 36V
VIN = 15V
VIN = 60V
VIN = 36V
VIN = 48V
VIN = 12V
VIN = 12V
VIN = 48V
VIN = 24V
VIN = 7V
0
40 80 120 160 200 240 280 320 360 400
40 80 120 160 200 240 280 320 360 400
LOAD CURRENT (mA)
0
40 80 120 160 200 240 280 320 360 400
LOAD CURRENT (mA)
LOAD CURRENT (mA)
CONDITIONS: FIXED 5V OUTPUT, PWM MODE
CONDITIONS: FIXED 3.3V OUTPUT, PWM MODE
CONDITIONS: ADJUSTABLE 12V OUTPUT, PWM MODE
MAX17640C
MAX17640A
MAX17640B
OUTPUT VOLTAGE vs. LOAD CURRENT
OUTPUT VOLTAGE vs. LOAD CURRENT
OUTPUT VOLTAGE vs. LOAD CURRENT
toc10
toc12
toc11
3.420
3.400
3.380
3.360
3.340
3.320
3.300
3.280
3.260
3.240
3.220
12.400
12.350
12.300
12.250
12.200
12.150
12.100
12.050
12.000
11.950
11.900
5.140
5.120
5.100
5.080
5.060
5.040
5.020
5.000
4.980
4.960
4.940
VIN = 60V
VIN = 24V
VIN = 48V
VIN = 36V
VIN = 5V
VIN = 24V
VIN = 15V
VIN = 7V
VIN = 12V
VIN = 24V
VIN = 12V
VIN = 36V
VIN = 48V
VIN = 36V
VIN = 48V
VIN = 60V
40 80 120 160 200 240 280 320 360 400
LOAD CURRENT (mA)
CONDITIONS: FIXED 3.3V OUTPUT, PFM MODE
0
40 80 120 160 200 240 280 320 360 400
LOAD CURRENT (mA)
0
40 80 120 160 200 240 280 320 360 400
LOAD CURRENT (mA)
CONDITIONS: FIXED 5V OUTPUT, PFM MODE
CONDITIONS: ADJUSTABLE 12V OUTPUT, PFM MODE
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Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
MAX17640A/MAX17640B/MAX17640C EV Kits Performance Report (continued)
MAX17640A
MAX17640B
OUTPUT VOLTAGE RIPPLE
OUTPUT VOLTAGE RIPPLE
toc13
toc14
10mV/div
VOUT(AC)
10mV/div
VOUT(AC)
2µs/div
2µs/div
CONDITIONS: FIXED 3.3V OUTPUT,
400mA LOAD, PWM MODE
CONDITIONS: FIXED 5V OUTPUT,
400mA LOAD, PWM MODE
MAX17640C
OUTPUT VOLTAGE RIPPLE
MAX17640A
LOAD TRANSIENT RESPONSE
toc15
toc16
100mV/div
VOUT(AC)
VOUT(AC)
10mV/div
IOUT
200mA/div
2µs/div
100µs/div
CONDITIONS: PFM MODE, FIXED 3.3V OUTPUT
LOAD STEP BETWEEN 5mA to 200mA
CONDITIONS: ADJUSTABLE 12V OUTPUT
400mA LOAD, PWM MODE
MAX17640A
MAX17640B
LOAD TRANSIENT RESPONSE
LOAD TRANSIENT RESPONSE
toc17
toc18
100mV/div
50mV/div
VOUT(AC)
VOUT(AC)
200mA/div
IOUT
IOUT
200mA/div
100µs/div
100µs/div
CONDITIONS: PWM MODE, FIXED 3.3V OUTPUT
LOAD STEP BETWEEN 200mA to 400mA
CONDITIONS: PFM MODE, FIXED 5V OUTPUT
LOAD STEP BETWEEN 5mA to 200mA
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Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
MAX17640A/MAX17640B/MAX17640C EV Kits Performance Report (continued)
MAX17640B
LOAD TRANSIENT RESPONSE
MAX17640C
LOAD TRANSIENT RESPONSE
toc20
toc19
200mV/div
100mV/div
200mA/div
VOUT(AC)
VOUT(AC)
IOUT
IOUT
200mA/div
100µs/div
100µs/div
CONDITIONS: PWM MODE, FIXED 5V OUTPUT
LOAD STEP BETWEEN 200mA to 400mA
CONDITIONS: PFM MODE, ADJUSTABLE 12V OUTPUT
LOAD STEP BETWEEN 5mA to 200mA
MAX17640A
STARTUP THROUGH ENABLE
MAX17640C
LOAD TRANSIENT RESPONSE
toc22
toc21
5V/div
EN/UVLO
LX
200mV/div
200mA/div
VOUT(AC)
20V/div
2V/div
VOUT
5V/div
IOUT
RESET
100µs/div
1ms/div
CONDITIONS: FIXED 3.3V OUTPUT,
400mA LOAD, PWM MODE
CONDITIONS: PWM MODE, ADJUSTABLE 12V OUTPUT
LOAD STEP BETWEEN 200mA to 400mA
MAX17640B
STARTUP THROUGH ENABLE
MAX17640C
STARTUP THROUGH ENABLE
toc23
toc24
5V/div
5V/div
EN/UVLO
LX
EN/UVLO
LX
20V/div
20V/div
10V/div
5V/div
5V/div
5V/div
VOUT
VOUT
RESET
RESET
1ms/div
1ms/div
CONDITIONS: FIXED 5V OUTPUT,
400mA LOAD, PWM MODE
CONDITIONS: ADJUSTBALE 12V OUTPUT,
400mA LOAD, PWM MODE
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Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
MAX17640A/MAX17640B/MAX17640C EV Kits Performance Report (continued)
MAX17640A
BODE PLOT
MAX17640B
BODE PLOT
toc26
toc25
100
80
120
100
80
100
80
120
100
80
PHASE
PHASE
60
60
40
60
40
60
20
40
20
40
0
20
0
20
GAIN
GAIN
-20
-40
-60
-80
0
-20
-40
-60
-80
0
-20
-40
-60
-20
-40
-60
CROSSOVER FREQUENCY = 45.636kHz
PHASE MARGIN = 58.11
CROSSOVER FREQUENCY =49.087kHz
PHASE MARGIN = 56.603
°
°
1k
10k
100k
1k
10k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
CONDITIONS: FIXED 5V OUTPUT, 400mA LOAD, PWM MODE
CONDITIONS: FIXED 3.3V OUTPUT, 400mA LOAD, PWM MODE
MAX17640B
CONDUCTED EMISSIONS PLOT
MAX17640C
BODE PLOT
toc27
toc28
120
120
100
80
CISPR-32 CLASS B QP LIMIT
100
80
60
40
20
0
60
50
40
30
PHASE
CISPR-32 CLASS B AVG LIMIT
60
PEAK
EMISSION
40
20
0
20
10
0
GAIN
CROSSOVER FREQUENCY = 20.132kHz
-20
-40
-60
-20
-40
-60
PHASE MARGIN = 64.563
°
AVERAGE
EMISSION
1k
10k
100k
10
1
0.15
FREQUENCY (MHz)
FREQUENCY (Hz)
CONDITIONS : VIN = 24V, VOUT = 5V, IOUT = 0.4A
MEASURED ON THE MAX17640BEVKIT# WITH
L201 = 22µH, C202 = C204 = 1µF/100V/X7R/1206
CONDITIONS: ADJUSTABLE 12V OUTPUT, 400mA LOAD, PWM MODE
MAX17640B
RADIATED EMISSIONS PLOT
toc29
50
40
30
20
CISPR-32 CLASS B QP LIMIT
VERTICAL
SCAN
10
0
HORIZONTAL
SCAN
-10
30
1000
100
FREQUENCY(MHz)
CONDITIONS : VIN = 24V, VOUT = 5V, IOUT = 0.4A
MEASURED ON THE MAX17640BEVKIT#
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Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
Component Suppliers
Ordering Information
PART
TYPE
EV Kit
EV Kit
EV Kit
SUPPLIER
Murata Americas
Panasonic Corp
Taiyo Yuden
TDK
WEBSITE
MAX17640AEVKIT#
MAX17640BEVKIT#
MAX17640C12EVKIT#
#Denotes RoHS compliance.
www.murata.com
www.panasonic.com
www.yuden.co.jp
www.tdk.com
Vishay
www.vishay.com
www.we-online.com
Wurth Elektronik
Note: Indicate that you are using the MAX17640 when contact-
ing these component suppliers.
MAX17640A EV Kit Bill of Materials
MAX17640A 3.3V Application Circuit
ITEM QTY DESIGNATION DESCRIPTION
MANUFACTURER PART NUMBER
TAIYO YUDEN HMK107B7104KA
PANASONIC EEE-FK2A220P
TDK C1608C0G2A221J080AA
TAIYO YUDEN HMK316B7105KLH
TAIYO YUDEN EMK107B7105KA
MURATA GRM31CR70J226KE19
TAIYO YUDEN EMK105B7104KV-F
WURTH 74404054470
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
2
1
C101, C107
C103
0.1μF±10%, 100V, X7R Ceramic Capacitor (0603)
22μF±20%, 100V, Aluminum Electrolytic capacitor
220pF±5%, 100V, C0G Ceramic Capacitor (0603)
1μF±10%, 100V, X7R Ceramic Capacitor (1206)
1μF±10%, 16V, X7R Ceramic Capacitor (0603)
22μF±10%, 6.3V, X7R Ceramic Capacitor (1206)
0.1μF±10%, 16V, X7R Ceramic Capacitor (0402)
INDUCTOR, 47μH, 1A
3
C105
4
C106
5
C108
6
C109
7
C111
8
L102
9
R101
1.1MΩ±1% resistor (0402)
VISHAY DALE CRCW04021M10FK
VISHAY DALE CRCW04023M32FK
VISHAY DALE CRCW040210K0FK
MAXIM MAX17640AATA+
10
11
12
13
14
15
R102
3.32MΩ±1% resistor (0402)
R103
10kΩ±1% resistor (0402)
U1
MAX17640A, Integrated Step-down Converter
Package Outline 2mmx1.9mm inductor
Package Outline 1206 capacitor
L101
C102, C104
C110
Package Outline 0805 capacitor
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Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
MAX17640B EV Kit Bill of Materials
MAX17640B 5V Application Circuit
ITEM
1
QTY
2
DESIGNATION
C201, C207
C203
DESCRIPTION
MANUFACTURER PART NUMBER
TAIYO YUDEN HMK107B7104KA
PANASONIC EEE-FK2A220P
TDK C1608C0G2A221J080AA
TAIYO YUDEN HMK316B7105KLH
TAIYO YUDEN EMK107B7105KA
MURATA GRM31CR70J226KE19
TAIYO YUDEN EMK105B7104KV-F
WURTH 74404054680
0.1μF±10%, 100V, X7R Ceramic Capacitor (0603)
22μF±20%, 100V, Aluminum Electrolytic capacitor
220pF±5%, 100V, C0G Ceramic Capacitor (0603)
1μF±10%, 100V, X7R Ceramic Capacitor (1206)
1μF±10%, 16V, X7R Ceramic Capacitor (0603)
22μF±10%, 6.3V, X7R Ceramic Capacitor (1206)
0.1μF±10%, 16V, X7R Ceramic Capacitor (0402)
INDUCTOR, 68μH, 0.8A
2
1
3
1
C205
4
1
C206
5
1
C208
6
1
C209
7
1
C211
8
1
L202
9
1
R201
715kΩ±1% resistor (0402)
VISHAY DALE CRCW0402715KFK
VISHAY DALE CRCW04023M32FK
VISHAY DALE CRCW040210K0FK
MAXIM MAX17640BATA+
10
11
12
1
R202
3.32MΩ±1% resistor (0402)
1
R203
10kΩ±1% resistor (0402)
1
U1
MAX17640B, Integrated Step-down Converter
OPTIONAL: 22µH±20%, 390mA Shielded
Wirewound Inductor
13
1
L201
COILCRAFT XPL2010-223ML
OPTIONAL: 1μF±10%, 100V, X7R Ceramic
Capacitor (1206)
14
15
2
1
C202, C204
C210
TAIYO YUDEN HMK316B7105KLH
Package Outline 0805 capacitor
Maxim Integrated
│ 9
www.maximintegrated.com
Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
MAX17640C EV Kit Bill of Materials
MAX17640C 12V Application Circuit
ITEM
1
QTY
2
DESIGNATION
C301, C307
C303
DESCRIPTION
MANUFACTURER PART NUMBER
TAIYO YUDEN HMK107B7104KA
PANASONIC EEE-FK2A220P
0.1μF±10%, 100V, X7R Ceramic Capacitor (0603)
22μF±20%, 100V, Aluminum Electrolytic capacitor
220pF±5%, 100V, C0G Ceramic Capacitor (0603)
1μF±10%, 100V, X7R Ceramic Capacitor (1206)
1μF±10%, 16V, X7R Ceramic Capacitor (0603)
22μF±10%, 16V, X7R Ceramic Capacitor (1210)
0.1μF±10%, 16V, X7R Ceramic Capacitor (0402)
INDUCTOR, 150μH, 0.6A
2
1
3
1
C305
TDK C1608C0G2A221J080AA
TAIYO YUDEN HMK316B7105KLH
TAIYO YUDEN EMK107B7105KA
MURATA GRM32ER71C226KEA8
TAIYO YUDEN EMK105B7104KV-F
WURTH 74404054151
4
1
C306
5
1
C308
6
1
C309
7
1
C311
8
1
L302
9
1
R301
301kΩ±1% resistor (0402)
VISHAY DALE CRCW0402301KFK
VISHAY DALE CRCW04023M32FK
VISHAY DALE CRCW040210K0FK
VISHAY DALE CRCW0402499KFK
VISHAY DALE CRCW040240K2FK
MAXIM MAX17640CATA+
10
11
12
13
14
15
16
17
1
R302
3.32MΩ±1% resistor (0402)
1
R303
10kΩ±1% resistor (0402)
1
R304
499kΩ±1% resistor (0402)
1
R305
40.2kΩ±1% resistor (0402)
1
U1
MAX17640C, Integrated Step-down Converter
Package Outline 2mmx1.9mm inductor
Package Outline 1206 Capacitor
1
L301
2
C302, C304
C310
1
Package Outline 0805 Capacitor
Maxim Integrated
│ 10
www.maximintegrated.com
Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
MAX17640A EV Kit Schematic Diagram
Maxim Integrated
│ 11
www.maximintegrated.com
Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
MAX17640B EV Kit Schematic Diagram
Maxim Integrated
│ 12
www.maximintegrated.com
Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
MAX17640C EV Kit Schematic Diagram
Maxim Integrated
│ 13
www.maximintegrated.com
Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
MAX17640A/MAX17640B/MAX17640C EV Kits PCB Layout Diagrams
1ꢀ0ꢁ
MAX17640A/MAX17640B/MAX17640C EV Kits PCB Layout Diagram—Top Silkscreen
1ꢀ0ꢁ
MAX17640A/MAX17640B/MAX17640C EV Kits PCB Layout Diagram—Top Layer
Maxim Integrated
│ 14
www.maximintegrated.com
Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
MAX17640A/MAX17640B/MAX17640C EV Kits PCB Layout Diagrams (continued)
1ꢀ0ꢁ
MAX17640A/MAX17640B/MAX17640C EV Kits PCB Layout Diagram—Layer 2
1ꢀ0ꢁ
MAX17640A/MAX17640B/MAX17640C EV Kits PCB Layout Diagram—Layer 3
Maxim Integrated
│ 15
www.maximintegrated.com
Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
MAX17640A/MAX17640B/MAX17640C EV Kits PCB Layout Diagrams (continued)
1ꢀ0ꢁ
MAX17640A/MAX17640B/MAX17640C EV Kits PCB Layout Diagram—Bottom Layer
1ꢀ0ꢁ
MAX17640A/MAX17640B/MAX17640C EV Kits PCB Layout Diagram—Bottom Silkscreen
Maxim Integrated
│ 16
www.maximintegrated.com
Evaluate: MAX17640
Converters in Application
MAX17640A/MAX17640B/
MAX17640C Evaluation Kits
Revision History
REVISION REVISION
PAGES
CHANGED
DESCRIPTION
NUMBER
DATE
0
1
1/21
Release for Market Intro
Updated Part numbers in EV kit title
—
3/21
1–17
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.
2021 Maxim Integrated Products, Inc.
│ 17
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