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MSK5059RH
Evaluation Board
User’s Guide
By Bob Abel & Paul Musil, MS Kennedy Corp.; 02/2011
Introduction
The MSK 5059RH is a radiation hardened 500 kHz switching regulator controller
capable of delivering up to 4.5A of current to the load. A fixed 500 kHz switching
frequency allows the use of smaller inductors reducing required board space for a given
design. The 4.5A integrated switch leaves only a few application specific components to
be selected by the designer. The MSK 5059RH simplifies design of high efficiency
radiation hardened switching regulators that use a minimum amount of board space. The
device is packaged in a hermetically sealed 16 pin flatpack and is available with straight
or gull wing leads.
The evaluation board provides a platform from which to evaluate new designs with ample
real estate to make changes and evaluate results. Evaluation early in the design phase
reduces the likelihood of excess ripple, instability, or other issues, from becoming a
problem at the application PCB level.
This application note is intended to be used in conjunction with the MSK5059RH data
sheet and the LT1959 data sheet. Reference those documents for additional application
information and specifications.
Setup
Use the standard turret terminals to connect to your power supply and test equipment.
Connect a power supply across the Vin and GND
1
terminals (see note 1). Connect the
output load between the VOUT and GND
2
terminals. Use separate or Kelvin connections
to connect input and output monitoring equipment. When measuring output ripple voltage
with an oscilloscope probe, the wire from the probe to the ground clip will act as an
4707 DEY ROAD LIVERPOOL, NY 13088
PHONE: (315) 701-6751 | FAX: (315) 701-6752
M.S. KENNEDY CORPORATION
MSK Web Site:
http://www.mskennedy.com/
