MAX14914A [MAXIM]
Reverse Supply Voltage Protection;
| 型号： | MAX14914A |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Reverse Supply Voltage Protection |
| 文件： | 总10页 (文件大小：1426K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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Evaluates: MAX14914/
MAX14914 Evaluation Kit
MAX14914A/MAX14914B
General Description
Features
The MAX14914 evaluation kit (EV kit) provides a prov-
en design to evaluate the MAX14914/MAX14914A/
MAX14914B, configurable industrial digital output drivers/
digital inputs. The EV kit allows controlling of the MAX14914
as either a digital output (in either High-Side or Push-Pull
mode) or digital input with simple jumper settings.
● Robust Operation with Wide Range of Input Voltages
and Load Conditions
● -40°C to +125°C Temperature Range
● On-Board LED Indication of Status and Fault
Conditions
● Reverse Supply Voltage Protection
● Proven PCB Layout
The EV kit must be powered from an external +24V power
supply and can consume up to 1.3A (minimum) when fully
loaded.
● Fully Assembled and Tested
The MAX14914EVKIT comes with a MAX14914ATE+
installed in a 16-pin, 4x4mm TQFN-EP package.
Ordering Information appears at end of data sheet.
MAX14914B overcurrent interrupt output is not directly
supported. For the MAX14914B application refer to the
MAX14914 IC data sheet.
MAX14914 EV Kit Board Photo
19-8773; Rev 1; 8/20
Evaluates: MAX14914
MAX14914 Evaluation Kit
MAX14914A/MAX14914B
MAX14914 EV Kit Block Diagram
+24V
PGND
V5
VL
VL
GND
FAULT
DOI
MAX14914
PGND
DOI_LVL
CLIM
VL
3) Use TP11 (DOI) and TP12 (PGND) to check that the
Quick Start
DOI level is high-Z by voltmeter or oscilloscope.
Required Equipment
● MAX14914 EV kit
4) Move the J4 shunt to 1-2 position (IN = high). Observe
that the DOI level becomes high and DS2 LED lights up.
● +24V power supply
● Voltmeter
5) Move the J4 shunt back to the 2-3 position (IN = low).
6) Move the J5 shunt to 1-2 position (PP = high, enable
● Function generator (optional)
● Oscilloscope (optional)
Push-Pull mode).
7) Repeat steps 4 and 5 to verify that the DOI output and
check that the DS2 LED follows the IN settings.
Procedure
8) Move J3 shunt to 1-2 position (DI_EN = high, enable DI
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation:
mode). Note that the shunts position of J4 is ignored.
9) Apply static 24V between TP11 (DOI) and TP12
1) Verify that all jumpers are in their default positions for
(PGND).
the digital output (DO), high-side operation (Table 1).
10) Observe that the DS2 LED follows the level of the DOI
2) Power up the EV kit with +24V from an external power
supply. Apply +24V to the TP16 banana jack and 0V
to the TP15 banana jack.
input.
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Evaluates: MAX14914
MAX14914 Evaluation Kit
MAX14914A/MAX14914B
Table 1. MAX14914 Board Shunt Positions and Settings
SHUNT
POSITION
HEADER
DESCIPTION
Connected V to V and set input logic level to 5V
1-2*
L
5
J1
Connect an external supply between TP5 (V ) and TP4 (GND) to provide the user-defined
input logic level from 2.5V to 5.5V
L
Open
1-2*
2-3
Input to the internal 5V regulator (REGIN) is from V source
DD
Bypass the external voltage regulator and apply an external 5V supply to TP3 to power up
the device.
J2
Open
2-3*
1-2
Provide an external 6~40V supply to J2.2
Set DI_EN low to enable digital output (DO) operation
Set DI_EN high to enable digital input (DI) operation
DO operation is enabled by internal weak pulldown resistor
Set IN low and DOI three-state/low
J3
J4
Open
2-3*
1-2
Set IN high and DOI high
Open
2-3*
1-2
Provide square wave from function generator to TP10
Set PP low and DO High-Side mode or DI Type 1, 3 mode in conjunction with J3 setting
Set PP high and DO Push-Pull mode or DI Type 2 mode in conjunction with J3 setting
J5
Set PP low and DO High-Side mode or DI Type 1, 3 Mode by internal pulldown resistor in
conjunction with J3 setting
Open
1-3*
1-2
Select C
Select C
Select C
= 51k and set current limit to ~900mA
= 27k and set current limit to ~1.6A
= 220k and set current limit to ~200mA
LIM
LIM
LIM
JMP1
1-4
Open
Current limit internally set to ~1.1A
*Default configuration
The 24V field supply is reverse-voltage protected and toler-
ant up to 60V supply spikes. Reverse-voltage protection
is achieved in the Q1 transistor. Refer to the MAX14914
EV kit schematic. The MAX14914 is immune to ±2.0kV
1.2/50µs surge pulses applied between the DOI and
PGND load lines.
Detailed Description of Hardware
The MAX14914 EV kit allows the user to evaluate all the
features and operational modes of the MAX14914 digital
High-Side/Push-Pull driver. It also can be configured as a
digital input level translator.
External Power Supply/Supplies
A power to the 5V internal regulator can be provided
The EV kit is powered from a single power supply and
accepts a wide range of input voltages, from 10V to
40V. The power is applied through two banana jacks,
TP16 (+) and TP15 (-). The MAX14914 can drive up
to 1.5A of current to the external load. The load is
connected to the EV kit through the J7 terminal block.
directly from either the V
selectable at the J2 header. Refer to Table 1 for details.
pin or from an external supply;
DD
If a logic interface of less than 5V is used from a micro-
controller (3.3V, for example), a secondary power supply
is needed to power up the V pin through the TP5 test
point with the correct voltage. In this case, the J1 header
L
should be left open.
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Evaluates: MAX14914
MAX14914 Evaluation Kit
MAX14914A/MAX14914B
Digital Output Operation
Fault Indication
The user can manually control the IN input either by shunt
position on the J4 header (refer to Table 1) or by apply-
ing square wave to the TP10 from an external function
generator or microcontroller. The J5 shunt sets either the
High-Side or Push-Pull mode of operation. The High-Side
mode is mostly used with the high current-resistive and
inductive loads, while Push-Pull is often used for high-
speed resistive and capacitive loads. The MAX14914
supports up to a 100kHz switching frequency. When using
high-frequency push-pull mode switching, be aware that
the 10nF (C8) capacitor charging/discharging current
generates very high power dissipation in the MAX14914.
The fault LED (DS1) turns on when the driver exceeds
170°C or a loss of ground is detected. The DOI output is
three-stated and the device will not operate until the fault
condition disappears.
Ordering Information
PART
TYPE
MAX14914EVKIT#
#Denotes RoHS compliant.
EV Kit
Digital Input Operation
When the DI_EN is high (J3 shunt in position 1-2) the
MAX14914 works as digital input. In this mode, the input
signal applied between the DOI pin (J7.2 or TP11) and
PGND (J7.1 or TP12) is level-shifted and inverted to the
output on TP8 (DOI_LVL). Note that the DOI_LVL is an
open-drain output and needs a pullup to the V voltage
L
level. DOI_LVL is logically inverted to the DOI input. So,
the LED DS2 reflects the real logic state of the DOI input.
In digital input mode, the MAX14914 supports both IEC
Type 1/3 as well as Type 3 inputs. Set J5/PP logic input
high for Type 2 input characteristics.
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Evaluates: MAX14914
MAX14914 Evaluation Kit
MAX14914A/MAX14914B
MAX14914 EV Kit Bill of Materials
ITEM
REF_DES
DNI/DNP QTY
MFG PART #
MANUFACTURER
VALUE
DESCRIPTION
COMMENTS
CAPACITOR; SMT (1210); CERAMIC CHIP;
10UF; 63V; TOL = 10%; TG = -55°C TO +125°C;
TC = X7R
1
C1
-
1
GRM32ER71J106KA12
MURATA
10UF
C0603C105K4RAC;
GRM188R71C105KA12;
C1608X7R1C105K;
EMK107B7105KA
CAPACITOR; SMT (0603); CERAMIC CHIP;1UF;
16V; TOL = 10%; MODEL = ; TG = -55°C TO +125°C;
TC = X7R
KEMET/MURATA/TDK/
TAIYO YUDEN
2
C2, C3
-
2
1UF
GCJ188R71H104KA12;
GCM188R71H104K;
CGA3E2X7R1H104K080AE
CAPACITOR; SMT (0603); CERAMIC CHIP;
0.1UF; 50V; TOL = 10%; TG = -55°C TO +125°C;
TC = X7R; AUTO
3
4
C5, C7
C8
-
-
2
1
MURATA; TDK
MURATA
0.1UF
CAPACITOR; SMT; 0805; CERAMIC; 0.01uF;
50V; 5%; COG; -55°C to + 125°C;
GRM2195C1H103JA01
0.01UF
0?30ppm/?C from -55°C to +125°C
DIODE; ZNR; SMT (SOD-323);
PIV = 12V; IZ = 0.005A
5
D1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1
1
1
1
1
4
1
1
1
1
1
1
1
1
2
3
MM3Z12VT1G
SMBJ40A
ON SEMICONDUCTOR
BOURNS
12V
40V
DIODE; TVS; SMB (DO-214AA);
VRM = 40V; IPP = 9.3A
6
D2
DIODE; LED; SMD LED; RED;
SMT (0603); VF = 2V; IF = 0.02A
7
DS1
DS2
J1
LTST-C191KRKT
LGL29K-G2J1-24-Z
PCC02SAAN
LITE-ON ELECTRONICS INC.
OSRAM
LTST-C191KRKT
LGL29K-G2J1-24-Z
PCC02SAAN
PCC03SAAN
ED555/2DS
PEC04SAAN
DMP6023LE
27K
DIODE; LED; SMARTLED; GREEN;
SMT; PIV=1.7V; IF=0.02A
8
CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY;
STRAIGHT THROUGH; 2PINS; -65°C TO +125°C
9
SULLINS
CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY;
STRAIGHT THROUGH; 3PINS; -65°C TO +125°C
10
11
12
13
14
15
16
17
18
19
20
J2-J5
J7
PCC03SAAN
SULLINS
CONNECTOR; FEMALE; THROUGH HOLE;
TERMINAL BLOCK; RIGHT ANGLE; 2PINS
ED555/2DS
ON-SHORE TECHNOLOGY INC
SULLINS ELECTRONICS CORP.
DIODES INCORPORATED
VISHAY DALE
CONNECTOR; MALE; THROUGH HOLE;
BREAKAWAY; STRAIGHT; 4PINS
JMP1
Q1
PEC04SAAN
TRAN; 60V P-CHANNEL ENHANCEMENT MODE MOSFET;
PCH; SOT223-4; PD-(2W); I-(-7A); V-(-60V)
DMP6023LE
RESISTOR, 0402, 27KΩ, 1%,
100PPM, 0.0625W, THICK FILM
R1
CRCW040227K0FK
ERJ-2RKF5102
RESISTOR; 0402; 51KΩ; 1%;
100PPM; 0.1W; THICK FILM
R2
PANASONIC
51K
MCR03EZPFX2002;
ERJ-3EKF2002
RESISTOR; 0603; 20KΩ; 1%;
100PPM; 0.10W; THICK FILM
R3
ROHM; PANASONIC
20K
CRCW0402220KFK;
9C04021A2203FLHF3
VISHAY DALE;
YAGEO PHYCOMP
RESISTOR; 0402; 220KΩ; 1%;
100PPM; 0.063W; THICK FILM
R4
220K
RESISTOR; 0402; 28KΩ; 1%;
100PPM; 0.063W; THICK FILM
R5
RC1005F2802
SAMSUNG ELECTRONICS
VISHAY DALE
28K
RESISTOR, 0603, 3.3KΩ, 1%,
100PPM, 0.10W, THICK FILM
R6, R7
R8-R10
CRCW06033K30FK
3.3K
CRCW04021K00FK;
RC0402FR-071KL
VISHAY DALE;
YAGEO PHICOMP
RESISTOR; 0402; 1K; 1%;
100PPM; 0.0625W; THICK FILM
1K
TEST POINT; JUMPER; STR; TOTAL LENGTH = 0.256IN; BLACK;
INSULATION = PBT CONTACT = PHOSPHOR BRONZE;
COPPER PLATED TIN OVERALL
21
22
23
SU1-SU5
-
-
-
5
2
3
STC02SYAN
5010
SULLINS ELECTRONICS CORP.
KEYSTONE
STC02SYAN
N/A
TP1, TP9
TESTPOINT WITH 1.80MM HOLE DIA, RED, MULTIPURPOSE;
TEST POINT; PIN DIA = 0.125IN; TOTAL LENGTH = 0.445IN;
BOARD HOLE=0.063IN; BLACK;
TP2, TP4, TP12
5011
KEYSTONE
N/A
PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;
TP3, TP5-TP8,
TP10, TP13,
TP14
TEST POINT; PIN DIA = 0.1IN; TOTAL LENGTH = 0.3IN;
BOARD HOLE =0.04IN; ORANGE;
PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;
24
25
26
27
28
-
8
1
2
1
4
5003
KEYSTONE
KEYSTONE
KEYSTONE
MAXIM
N/A
N/A
TEST POINT; PIN DIA = 0.125IN;
TOTAL LENGTH = 0.445IN; BOARD HOLE = 0.063IN; ORANGE;
PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;
TP11
-
5013
CONNECTOR; FEMALE; PANELMOUNT;
NON-INSULATED RECESSED HEAD BANANA JACK;
STRAIGHT THROUGH; 1PIN
TP15, TP16
U1
-
6095
6095
EVKIT PART - IC; SWITCH; HIGH-SIDE SWITCH WITH SETTABLE
CURRENT LIMIT AND PUSH-PULL DRIVER OPTION;
NO. OF LEADS-(16); TQFN16-EP
-
MAX14914ATE+
MAX14914ATE+
KIT; ASSY-STANDOFF 3/8IN;
1PC. STANDOFF/FEM/HEX/4-40IN/(3/8IN)/NYLON;
1PC. SCREW/SLOT/PAN/4-40IN/(3/8IN)/NYLON
EVKIT_STANDOFF_
4-40_3/8
J6, J8-J10
DNI
EVKIT_STANDOFF_4-40_3/8
GRM32ER71J106KA12
?
CAPACITOR; SMT (1210); CERAMIC CHIP; 10UF; 63V;
TOL = 10%; TG = -55°C TO +125°C; TC = X7R
29
30
31
C4
C6
D3
DNP
DNP
DNP
0
0
0
0
MURATA
10UF
1UF
40V
DNI
DNI
DNI
DNI
C2012X7S2A105K125;
GRJ21BC72A105KE11
CAPACITOR; SMT (0805); CERAMIC CHIP; 1UF; 100V;
TOL = 10%; TG=-55°C TO +125°C; TC = X7S
TDK/MURATA
BOURNS
DIODE; TVS; SMB (DO-214AA);
VRM=40V; IPP = 9.3A
SMBJ40CA
RESISTOR; 0805; 150K; 1%;
100PPM; 0.125W; THICK FILM
32
33
R11
DNP
-
CRCW0805150KFK
MAX14914
VISHAY DALE
MAXIM
150K
PCB
PCB
1
PCB Board:MAX14914 EVALUATION KIT
TOTAL
55
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Evaluates: MAX14914
MAX14914 Evaluation Kit
MAX14914A/MAX14914B
MAX14914 EV Kit Schematics
TP1 TP16
Q1
+24V
TP9
DMP6023LE
VDD
4
2
3
C1
10UF
D2
40V
C4
10UF
DNI
TP2 TP15
D3
40V
DNI
R3
20K
D1
12V
PGND
J2
3
1
V5 IN
R5
28K
TP6
TP3
TP4
V5
C5
0.1UF
C6
1UF
DNI
C2
1UF
U1
J1
C7
0.1UF
GND
VL
C3
1UF
DOI
TP11
TP5
1
12
VL
VDD
DOI
2
3
4
11
10
9
GND
2
1
MAX14914ATE+
CLIM
FAULT
DOI
R11
150K
DNI
C8
PGND
J7
JMP1
0.01UF PGND
2
4
TP12
R1
27K
R2
51K
R4
220K
TP7
TP8
TP14
TP10
R10
1K
DS1
DS2
R9
1K
R6
R7
3.3K
3.3K
TP13
VL IN
R8
1K
VL
J3
J4
J5
2
2
2
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Evaluates: MAX14914
MAX14914 Evaluation Kit
MAX14914A/MAX14914B
MAX14914 EV Kit PCB Layouts
MAX14914 EV Kit—Top Silkscreen
MAX14914 EV Kit—Top
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Evaluates: MAX14914
MAX14914 Evaluation Kit
MAX14914A/MAX14914B
MAX14914 EV Kit PCB Layouts (continued)
MAX14914 EV Kit—Level 2 GND
MAX14914 EV Kit—Level 3 Power
Maxim Integrated
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Evaluates: MAX14914
MAX14914 Evaluation Kit
MAX14914A/MAX14914B
MAX14914 EV Kit PCB Layouts (continued)
MAX14914 EV Kit—Bottom
MAX14914 EV Kit—Bottom Silkscreen
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Evaluates: MAX14914
MAX14914 Evaluation Kit
MAX14914A/MAX14914B
Revision History
REVISION REVISION
PAGES
CHANGED
DESCRIPTION
NUMBER
DATE
0
1
2/17
8/20
Initial release
Updated the title and General Description section
—
1–10
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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.
2020 Maxim Integrated Products, Inc.
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