Datasheet

MAX15041 Evaluation Kit
Evaluates: MAX15041
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Reconfiguring the MAX15041 EV kit for a new output
voltage may require replacing inductor L1, capacitors
C1 and/or C5, and compensation components C8, C9,
and R3. The minimum output voltage is also impacted
by minimum controllable on time of the MAX15041 IC.
To select a new value for inductor L1, and capacitors C1
and C5, refer to the Inductor Selection, Input Capacitor
Selection, and Output-Capacitor Selection sections,
respectively, in the MAX15041 IC data sheet.
Enable Control (JU1)
Jumper JU1 configures the MAX15041 EV kit output for
turn-on/turn-off control. Install a shunt across pins 1-2 to
enable VOUT or across pins 2-3 to disable VOUT. VOUT
can also be enabled by applying an external signal
greater than 1.95V (typ) at the EN and SGND PCB pads.
See Table 1 for proper JU1 configuration.
Power-Good Output (PGOOD)
The MAX15041 EV kit provides a PCB pad to monitor
the status of the power-good output (PGOOD). PGOOD
can be used as a system reset signal during power-up.
PGOOD is high after VOUT rises above 92.5% of its pro-
grammed output voltage. PGOOD is pulled up to VDD
(5V, typ) using resistor R2. PGOOD is pulled low when
VOUT drops below 90% of its nominal set voltage.
Soft-Start Timing Input (SS)
The MAX15041 EV kit circuit soft-start time is set to
1.2ms using capacitor C7. To reconfigure the EV kit for
other soft-start times, refer to the Setting the Soft-Start
Time section in the MAX15041 IC data sheet.
Compensation Network
The MAX15041 IC provides the flexibility of externally
compensating its internal error amplifier to achieve
stability for various applications. The MAX15041 EV kit
circuit is compensated by appropriately choosing values
for resistors R3 and capacitors C8 and C9. To reconfig-
ure the compensation network for specific requirements,
refer to the Compensation Design Guidelines section in
the MAX15041 IC data sheet.
Table 1. Enable Control (JU1)
SHUNT
POSITION
EN PIN
EV KIT
FUNCTION
1-2
Connected to VIN
through R1
VOUT enabled
2-3
Connected to
GND
VOUT disabled
Not installed
Externally con-
trolled
Voltage source
applied at EN and
SGND PCB pads