MAX16936 Eval Kit Datasheet by Maxim Integrated

View All Related Products | Download PDF Datasheet
Evaluates: MAX16936IMAX16938I maxim Integrated ,,
Evaluates: MAX16936/MAX16938/
MAX16939
MAX16936 Evaluation Kit
General Description
The MAX16936 evaluation kit (EV kit) demonstrates
the MAX16936 high-voltage, current-mode step-down
converter with low operating current. The EV kit operates
over a wide 3.5V to 36V input range and the output is set
for 5V at 2.5A.
The EV kit comes with the MAX16936RAUEA/V+ installed.
Features and Benefits
Wide 3.5V to 36V Input Supply Range
Forced-PWM or Skip-Mode Operation
Programmable Switching Frequency
Power-Good Output
Proven PCB Layout
Fully Assembled and Tested
19-6771; Rev 1; 4/16
Ordering Information appears at end of data sheet.
Quick Start
Required Equipment
● MAX16936EVkit
● 14V,1ADCpowersupply
● Electronicloadcapableof2.5A
● Digitalvoltmeter(DVM)
Procedure
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation. Caution: Do not turn on
supplies until all connections are made.
1) Verify that jumpers JU1 and JU2 are in their default
positions, as shown in Tables 1 and 2.
2) Connect the power supply between the EXT_VBAT
andnearestPGNDtestpoints.
3) Connect the 2.5A electronic load between the OUT
andnearestPGNDtestpoints.
4) Connect the DVM between the OUT and nearest
PGNDtestpoints.
5) Turn on the power supply.
6) Enable the electronic load.
7) Verify that the voltage at the OUT test point is approxi-
mately 5V.
*Default position.
*Default position.
Table 1. EN Configuration (JU1)
Table 2. Mode of Operation (JU2)
SHUNT
POSITION DESCRIPTION
1-2* Connects the EN pin to the voltage at SUP
for normal operation.
2-3 Connects the EN pin to ground to enter
shutdown mode.
SHUNT
POSITION MODE PIN MODE
1-2* Connected to BIAS
Forced-PWM mode
(device syncs to the
internal clock)
2-3 Connected to
AGND Skip mode
Not installed Connected to an
external clock
Forced-PWM mode
(device syncs to an
external clock)
Maxim Integrated
2
www.maximintegrated.com
Evaluates: MAX16936/MAX16938/
MAX16939
MAX16936 Evaluation Kit
Detailed Description of Hardware
The EV kit demonstrates the MAX16936 high-voltage,
high-frequency, step-down converter with low operating
current. The EV kit operates over a wide 3.5V to 36V input
range and the output is set for 5V at 2.5A.
Enable (EN)
Place a shunt in the 1-2 position on jumper JU1 for normal
operation. To place the device into shutdown mode, move
the shunt on JU1 to the 2-3 position.
Synchronization Input (FSYNC)
The EV kit features jumper JU2 to control the synchro-
nization input (FSYNC). The device synchronizes to an
external signal applied to FSYNC. Connect FSYNC to
AGNDtoenableskip-modeoperation.ConnecttoBIAS
or to an external clock to enable fixed-frequency forced-
PWM mode operation.
To use an external clock, uninstall the shunt on JU2 and
apply the signal at the FSYNC test point. The external
clock frequency at FSYNC can be higher or lower than the
internal clock by 20%. Ensure that the duty cycle of the
external clock used has a minimum 100ns pulse width.
Synchronizing Output (SYNCOUT)
The EV kit provides jumper JU3 to pull up the open-drain
SYNCOUT to the OUT voltage. SYNCOUT is a 180° out-
of-phase clock output relative to the internal oscillator
at SYNCOUT to create cascaded power supplies with
multiple MAX16936s.
Setting the Switching Frequency (FOSC)
The EV kit switching frequency is set by a resistor, RFOSC
(R2),connectedfromFOSCtoAGND.RefertoFigure3.
in the MAX16936 IC data sheet for a graphical approach
of selecting the correct RFOSC (R2) value.
Power-Good Output (PGOOD)
The EV kit provides a PGOOD test point to monitor the
status of the device output. PGOOD asserts when VOUT
rises above 95% of its regulation voltage. PGOOD
deasserts when VOUT drops below 92% of its regulation
voltage.
Output
Connect FB to BIAS for a fixed +5V (EV kit default
output) or a fixed +3.3V output voltage. To set the output
to other voltages between 1V and 10V, connect a resis-
tivedividerfromoutput(OUT)toFBtoAGND.Usethe
followingformulatodeterminetheR4andR6 of the resis-
tive divider network:
OUT
FB
V
R4 R6 1
V

=×−


where VFB = 1V.
Maxim Integrated
3
www.maximintegrated.com
Evaluates: MAX16936/MAX16938/
MAX16939
MAX16936 Evaluation Kit
*EP = Exposed pad.
Note: Indicate that you are using the MAX16936 when contacting these component suppliers.
DESIGNATION QTY DESCRIPTION
AGND,
PGND(x4) 5 Black test points
BIAS,
EXT_SUP,
EXT_VBAT,
FSYNC,
PGOOD,OUT,
SYNCOUT
7 Red test points
C1 1
47µF±20%,50Valuminum
electrolytic capacitor
(8.00mm x 10.20mm)
PanasonicEEE-TG1H470UP
C2,C4 2
4.7µF±10%,50VX7Rceramic
capacitors (1210)
MurataGCM32ER71H475KA55L
C3, C5 2
0.1µF±10%,50VX7Rceramic
capacitors (0603)
MurataGCM188R71H104KA57D
C6 1
0.1µF±10%,16VX7Rceramic
capacitor(0402)
MurataGRM155R71C104K
C7, C8 2
22µF±10%,10VX7Rceramic
capacitors (1210)
MurataGCM32ER71A226KE12L
C10 1
2.2µF±10%,10VX7Rceramic
capacitor (0603)
MurataGRM188R71A225K
C12 1
1000pF±10%,50VX7Rceramic
capacitor(0402)
MurataGRM155R71H102K
DESIGNATION QTY DESCRIPTION
C13 1
10pF±5%,50VC0Gceramic
capacitor(0402)
Murata GRM1555C1H100J
C14,C15 0Not installed, ceramic capacitors
(0402)
D1 13A, 60V Schottky diode (SMB)
DiodesInc.B360B-13-F
JU1, JU2 2 3-pin headers
JU3 1 2-pin header
L1 1
2.2µH,13Ainductor
(7mm x 6.9mm)
Würth744311220
LX 0 Not installed, red test point
R1 1 20kΩ±1%resistor(0402)
R2 1 12.1kΩ±1%resistor(0402)
R3 1 10kΩ±5%resistor(0402)
R4,R6,R7 0Notinstalled,resistors(0402)
R5 1 1kΩ±5%resistor(0402)
R8 1 0Ω±5%resistor(1210)
R9, R10, R12 3 0Ω±5%resistors(0402)
R11 1100kΩ±5%resistor(0402)
U1 1
Automotive buck converter
(16 TSSOP-EP*)
Maxim MAX16936RAUEA/V+
3 Shunts
1 PCB: MAX16936 EVALUATION
KIT
SUPPLIER PHONE WEBSITE
DiodesIncorporated 805-446-4800 www.diodes.com
Murata Americas 770-436-1300 www.murataamericas.com
Panasonic Corp. 800-344-2112 www.panasonic.com
WürthElectronikGmbH&Co.KG 201-785-8800 www.we-online.com
Component List
Component Suppliers
“.me a F, H 5% 5m 5m 9m >m
Maxim Integrated
4
www.maximintegrated.com
Evaluates: MAX16936/MAX16938/
MAX16939
MAX16936 Evaluation Kit
Figure 1. MAX16936 EV Kit Schematic
maxvm . Integrated- Dag/BAT z 9073 u v m, stCOU.w ”mm do FSVNCO mun-CE IE1. - - U +\—‘ v a o 2. c MAMMMLUA (mm E
Maxim Integrated
5
www.maximintegrated.com
Evaluates: MAX16936/MAX16938/
MAX16939
MAX16936 Evaluation Kit
Figure 2. MAX16936 EV Kit Component Placement Guide—
Component Side
Figure 3. MAX16936 EV Kit PCB Layout—Component Side
Figure 4. MAX16936 EV Kit PCB Layout—Layer 2
1.0”
Maxim Integrated
6
www.maximintegrated.com
Evaluates: MAX16936/MAX16938/
MAX16939
MAX16936 Evaluation Kit
Figure 5. MAX16936 EV Kit PCB Layout—Layer 3 Figure 6. MAX16936 EV Kit PCB Layout—Solder Side
Figure 7. MAX16936 EV Kit Component Placement Guide—
Solder Side
Maxim Integrated
7
www.maximintegrated.com
Evaluates: MAX16936/MAX16938/
MAX16939
MAX16936 Evaluation Kit
#Denotes RoHS compliant.
Note: MAX16936EVKIT# can be used for MAX16938 and
MAX16939.
PART TYPE PACKAGE
MAX16936EVKIT# EVKit TSSOP
MAX16936REVKIT# EVKit TQFN
Ordering Information
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. © 2016 Maxim Integrated Products, Inc.
8
Evaluates: MAX16936/MAX16938/
MAX16939
MAX16936 Evaluation Kit
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 8/13 Initial release
14/16 Added additional ICs that kit can evaluate and updated Ordering Information 1–8
Revision History
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.

Products related to this Datasheet

KIT EVAL FOR MAX16936 CONVERTER
Available Quantity: 5
Unit Price: 86.16
KIT EVALUATION MAX16936
Available Quantity: 0
Unit Price: 0