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Evaluation Board Layout
4.1
Optional Components and Footprints
•
R
resistor – allows for a network analyzer connection to measure the control loop response. Replace
INJ
this resistor with a short in a final design if control loop measurements are not needed.
•
R
resistor – an optional footprint to pull EN up to V
PU
up to V
by a 790 kΩ resistor.
IN
•
R
– an optional resistor in series with the EN pin.
EN
•
R
– an optional pull-down resistor for the Q
PD
•
Q
– an optional footprint to use an N-ch MOSFET as a pull-down device for EN.
EN
•
J1 – jumper to select how to drive EN. Connecting the jumper pins 1 and 2 allows for driving EN
directly from the EN turret at the edge of the board. Connecting the jumper pins 2 and 3 allows for
driving the gate of the pull-down device Q
•
EC1 – board edge connector for quick testing.
•
C
footprints – the solder mask on the V
OUT
capacitor configurations.
5
Evaluation Board Layout
4
AN-2166 LMZ10501 and LMZ10500 SIMPLE SWITCHER
Evaluation Board
gate.
EN
.
EN
side of the board is removed to allow for different output
OUT
Figure 2. Evaluation Board Top View
®
Nano Module
Copyright © 2011–2013, Texas Instruments Incorporated
with an external resistor. EN is internally pulled
IN
SNVA491B – August 2011 – Revised April 2013
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