Quick Start - Analog Devices MAX77857 Manual

Evaluates: MAX77857 (WLP)
EV Kit Default Configuration
With the default jumper settings listed in
and R (R11) = OPEN, the MAX77857 EV kit is configured with the following settings:
BOT
•
Internal Feedback
•
Switching Current Limit = 7A
•
2
I C Slave Address (7-bit) = 0x66
•
Switching Frequency = 1.8MHz (adjustable only through I
•
V Disconnected from V
IO
•
EN Controlled from V
See the EV Kit Hardware
Table 1. Default Shunt Positions and Jumper Descriptions
JUMPER NODE
J1 EN
V
J2
IO
*Default position

Quick Start

Required Equipment
•
MAX77857 EV Kit
•
Adjustable DC power supply
•
Digital multi-meters
•
Electronic load
•
MAXUSB_INTERFACE# for I
•
USB Type-A to Micro-USB cable (optional)
•
Windows-based PC with MAX77857 EV kit GUI (optional)
Setup Overview
Typical bench setups for the MAX77857 EV kit with different configurations are shown in
5.
www.analog.com
Table 1
L
(as opposed to controlled from V
IO
section to change the EV kit configuration.
SHUNT
POSITION
Connects EN to V
1-2*
See the
Connects EN to V
2-3
Floats EN. Use for controlling EN from an external logic signal. The converter is
Not installed
disabled if no external logic signal is connected to EN.
Connects V
separate V
1-2*
information.
Disconnects V
Not installed
MAXUSB_INTERFACE# or an external V
2
C serial interface (optional)
and the EV kit component values of R
2
C)
)
IN
through a 510kΩ pullup resistor for standalone operation.
IN
Standalone Operation
. The converter is enabled when both V
IO
to V . Allow V
IO L IO
supply. See the
IO
from V L . V
IO IO
MAX77857 Evaluation Kit
(R9) = 0Ω, R
SEL
FUNCTION
section for more information.
to be powered from V without the need for a
L
Standalone Operation section for more
needs to be powered from either
supply.
IO
Figure
(R10) = 0Ω,
TOP
and V are valid.
IN IO
3, Figure 4, and Figure
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