EK51 DF
P r o d u c t
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PSOP)
Packages (24-pin
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EK51
EK51
ASSEMBLY
The PSOP1 should be assembled to the EVAL43 PC board
using surface mount processes. Solder paste may be dispensed
or screen-printed on the DUT pads as well as the foil heat slug
pad. The heat slug on the bottom surface of the PSOP1 pro-
vides maximum heat dissipation capabilities when soldered to
the PCB foil footprint area. However, for prototype purposes,
the tab can be thermally connected to the PCB foil area using
thermal grease.
If soldering the heat slug, ideally the PSOP1 should be soldered
to the PCB using a solder reflow furnace. If a reflow furnace is
not available, a heat plate capable of solder reflow temperatures
may be used. Otherwise, the leads may be carefully soldered
individually to the PCB with a thin tip soldering iron. However,
in this case, the use of thermal grease under the heat tab is
recommended instead of solder for thermal connection through
the thermal vias.
The kit comes with ceramic bypass capacitors, which should
be soldered on the space provided on the EVAL43 board.
Also, space is provided for the appropriate electrolytic by-pass
capacitors. Although these capacitors are not provided in the
kit, a recommended capacitor is listed for 100V applications.
For higher voltage applications, a larger electrolytic capacitor
can be mounted on the EVAL36 board.
The EVAL43 is a generic evaluation board for the PSOP1.
Jumpers are required to make appropriate connection to +Vs,
-Vs and ground. When applicable, surface mount 0805 0Ω
resistors can be used in the locations provided.
Once all the surface mount components are installed, the
heat sink can then be mounted to the back of the PC board.
High thermal conductive grease should be used when mounting
the heat sink to the PC board. Note: A heat sink is not supplied
with the kit, but several options are listed which are produced
by AAVID Thermal Product, Inc.
Review Figure 2 on the next page for all other assemblies
needed to construct this evaluation kit.
Evaluation Kit for DF (24-pin PSOP)
INTRODUCTION
The EK51 evaluation kit provides a fast and easy breadboard
solution for all devices in Apex Precision Power’s PSOP1 package
(24 PIN PSOP). The EK51 includes the EVAL43 board shown
in Figure 1, as well as the universal EVAL36 board. The combi-
nation of the two boards provides a large area for breadboard
circuit space while also providing an effective method of thermal
management of the surface mount package. The device under
evaluation is surface mounted directly to the EVAL43 PC board
which provides a foil footprint area the size of the heat slug. This
foil heat slug connection area consists of plated through thermal
vias. The thermal vias offer a cost-effective way to decrease the
thermal resistance between one side of the PC board which al-
lows for the direct mounting of a heat sink or heat sink surface
mount fan on the back side of the PC board.
PARTS LIST
Part#
EVAL36
EVAL43
TSM-116-01-T-SV
SSW-116-01-T-S
OX7R105KWN
Description
Universal PC Board,
Apex Precision Power
PC Board, PSOP1,
Apex Precision Power
Terminal Strip, 16pin, Samtec
Socket Strip, 16pin, Samtec
Cap, 200V, 1µF, Ceramic
Qty
1
1
2
2
4
*ERJ-6GEYOR00V Res, 0.0Ω, 0805SMD, Panasonic
4
*AVS336M2AG24T Cap, 100V, 33µF, CDE
4
*031606
Heat Sink w/ Fan, 3.4°C/W, AAVID 1
or
or
Heat Sink, 11.0°C/W, AAVID
1
*031613
* Parts not supplied. Parts are application dependent. Sug-
gested part numbers are provided.
Figure 1: EVAL 43
BEFORE YOU GET STARTED
* All Apex Precision Power amplifiers should be handled using
proper ESD precautions.
* Always provide the appropriate heat sinking.
* Always use adequate power supply bypass capacitors.
* Do not change connections while the circuit is powered.
* Initially set all power supplies to the minimum operating levels
allowed in the device data sheet.
* Check for oscillations.
EK51U
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
MAY 2009
1
APEX − EK51UREVB
P r o d u c t I n n o v a t i o nF r o m
EK51
ContACting CiRRUs LogiC sUPPoRt
For all Apex Precision Power product questions and inquiries, call toll free 800-546-2739 in North America.
For inquiries via email, please contact apex.support@cirrus.com.
International customers can also request support by contacting their local Cirrus Logic Sales Representative.
To find the one nearest to you, go to www.cirrus.com
IMPORTANT NOTICE
Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject
to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant
information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale
supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus
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copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives con-
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does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROP-
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CUSTOMER OR CUSTOMER’S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES,
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EK51U
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