frequency setting and the EN/UVLO, OVI settings are
described in the MAX17595/6/7 data sheet.
The MAX17606 has a wide range of input voltage from
4.5V to 36V. The input range makes it simple to drive
using one of the following two methods. When the output
voltage is 5V and greater, V
OUT
can be used to directly
drive V
IN
. When the output voltage is less than 5V, use
the rectified drain voltage of the secondary synchronous
MOSFET to drive V
IN
. The EV kit circuit has an option
for both of these configurations. By default, the EV kit is
programmed to run from the rectified drain voltage of the
synchronous MOSFET. When running the MAX17606
from the output voltage is required, remove R1 and set
R31 to 10Ω.
The device has a provision to program the turn-off trip
point of the secondary synchronous rectifier. An external
resistor (R25) connects the drain of the external MOSFET
to the IC’s DRN pin. This resistor sets the turn-off trip
point with a precise internal current source. Once the
synchronous rectifier is turned off, the MAX17606 uses
resistor R26 (connected between the T
OFF
pin and
GND0) to program the turn-off time in order to provide
immunity from DCM ringing. For the selection of R25 and
R26 resistors, refer to the MAX17606 data sheet.
Note:
The EV kit is shipped with frequency dithering
disabled and the DITHER/SYNC pin shorted to SGND by
a 0Ω resistor. To set the desired frequency dither, replace
R23 with a capacitor of appropriate value, as detailed in
the MAX17595/6/7 data sheet. The DITHER /SYNC PCB
pad is available for monitoring the signal at the DITHER/
SYNC pin.
www.maximintegrated.com
Maxim Integrated │ 2
MAX17606 Synchronous Flyback
Evaluation Kit
EV Kit Performance Report
100
90
80
EFFICIENCY (%)
70
60
50
40
30
20
10
0
0
1000
2000
3000
5.01
0
1000
2000
3000
Evaluates: MAX17606
EFFICIENCY vs. LOAD CURRENT
V
IN
= 18V
V
IN
= 24V
toc1
5.04
OUTPUT VOLTAGE
vs. LOAD CURRENT
toc2
SOFT START
toc3
5V/div
V
IN
= 36V
OUTPUT VOLTAGE (V)
V
IN
= 36V
5.03
V
IN
= 24V
V
IN
= 18V
5.02
EN/UVLO
GATE
5V/div
5V/div
V
OUT
2.5A/div
I
OUT
4ms/div
5V output
LOAD CURRENT (mA)
LOAD CURRENT (mA)
LOAD TRANSIENT RESPONSE
(LOAD CURRENT FROM 1.5A TO 3A ON 5V.
5V output
V
OUT
(AC)
toc4
5V OUTPUT, 3A LOAD CURRENT
BODE PLOT
PHASE
toc5
200mV/div
GAIN
1A/div
I
OUT
1mS/div
F
CR
= 7.622KHz,
PHASE MARGIN = 73.082°
www.maximintegrated.com
Maxim Integrated │ 3
MAX17606 Synchronous Flyback
Evaluation Kit
Component Suppliers
SUPPLIER
Wurth Electronik
Murata Americas
Panasonic Corp.
WEBSITE
www.we-online.com
www.murata.com
www.panasonic.com
Evaluates: MAX17606
Ordering Information
PART
MAX17606SFBEVKIT#
#Denotes RoHS compliant.
TYPE
EV Kit
Note:
Indicate that you are using the MAX17606SFBEVKIT
when contacting these component suppliers.
Component List, PCB Layout, and
Schematics
●
MAX17606 EV BOM
●
MAX17606 EV PCB Layout
●
MAX17606 EV Schematic
See the following links for component information, PCB
layout, and schematic.
www.maximintegrated.com
Maxim Integrated │
4
MAX17606 Synchronous Flyback
Evaluation Kit
Revision History
REVISION
NUMBER
0
REVISION
DATE
11/15
Initial release
DESCRIPTION
Evaluates: MAX17606
PAGES
CHANGED
—
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.
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.
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