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User's Guide
SNVA460B–April 2011–Revised April 2013
AN-2093 LMZ23610/8/6 and LMZ22010/8/6 Current Sharing
Evaluation Board
1 Introduction
The LMZ23610/8/6 and LMZ22010/8/6 SIMPLE SWITCHER® power modules are easy-to-use DC-DC
solution capable of driving up to a 10, 8 or 6 ampere load. They are available in an innovative package
that enhances thermal performance and allows for hand or machine soldering. The LMZ23610/8/6 can
accept an input voltage rail between 6V and 36V and the LMZ22010/8/6 can accept an input voltage rail
between 6V and 20V.
The current sharing evaluation board is designed so that four modules can be easily connected to supply
up to a 40 amp load. More can be connected as long as care is taken to not exceed the current
capabilities of the banana plug connectors and the 5-amp per pin rating of the edge board connector.
The current sharing evaluation board is highly configurable. The output voltage can be changed to 5V,
3.3V, 2.5V or 1.2V with a jumper change. The external soft-start capacitor facilitates a controlled and
adjustable startup rise time of the output. The board temperature can be measured with the onboard
resistor. The UVLO can be adjusted by adding one resistor. To simplify the synchronization of the
modules an onboard 555 timer provides an adjustable frequency clock from 350 to 600 kHz.
The LMZ23610 and LMZ22010 family is a reliable and robust solution with the following features: loss-less
cycle-by-cycle valley current limit to protect for over current or short-circuit fault, thermal shutdown, input
under-voltage lockout, and will start up into a pre-biased output.
2 Board Specifications
• V
IN
= 6V to 36V (LMZ23610/8/6)
• V
IN
= 6V to 20V (LMZ22010/8/6)
• V
OUT
= 1.2V, 2.5V, 3.3V or 5V (minimum input voltage of 7V required for 5V output)
• I
OUT
= 0 to 10, 8, or 6 Amps
• θ
JA
= 8.8 °C / W, θ
JC
= 1.0 °C/W
• Designed on four layers; Inner are 2 oz copper; Outer are 2 oz copper.
• Measures 3.54" x 3.54" (90 mm x 90 mm) and is 62 mils (1.57 mm) thick of FR4 laminate material
For additional circuit considerations, including additional output voltage options, refer to the Applications
section of the LMZ23610 10A SIMPLE SWITCHER® Power Module with 36V Maximum Input Voltage and
Current Sharing (SNVS707) or LMZ22010 10A SIMPLE SWITCHER® Power Module with 20V Maximum
Input Voltage and Current Sharing (SNVS687) data sheets. For negative output voltage connections see
AN-2027 Inverting Application for the LMZ14203 SIMPLE SWITCHER® Power Module (SNVA425).
All trademarks are the property of their respective owners.
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SNVA460B–April 2011–Revised April 2013 AN-2093 LMZ23610/8/6 and LMZ22010/8/6 Current Sharing Evaluation
Board
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