APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
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INTRODUCTION
This easy-to-use kit provides a platform for the evaluation
of PWM amplifier circuits using the SA07 pin-out. With ample
breadboarding areas it is flexible enough to analyze a multitude
of standard or proprietary circuit configurations. Critical con-
nections for power supply bypassing, compensation and current
limiting are pre-wired. Components not usually readily available
in engineering labs are provided. External connection to the
evaluation kit can be made via the terminals at the edge of the
circuit board. These terminal pads are suitable for standard
banana jacks or direct soldering of wires. The schematic is
shown in Figure 1.
PARTS LIST
Part #
Description, Vendor
Quantity
CLAMP02
Mounting clip, Apex
1
HS21
Heat sink, Apex
1
EVAL18
PC Board, Apex
1
TWO9
Thermal washer, Apex
1 Box/10 each
OX7R105KWN
Capacitor, Novacap
2
1825B105K201N
CRS01
Resistor, Caddock
2
MP725-0.10-1%
CRS02
Resistor, Caddock
2
MP725-0.05-1%
ASSEMBLY
See Figure 3.
1. Solder the surface mount ceramic capacitors to the DUT side
of the circuit board at CVs and CVcc.
2. Select a current limiting resistor from the two values provided.
See the product data sheet for information on how to select a
value. Apply a thin coating of thermal grease to the back of
the resistors. Press the resistor body onto the circuit board
foil at positions Ra and Rb and solder the leads.
3. Assemble the amplifier, thermal washer and heat sink to the
circuit board as illustrated in Figure 1. As a last step push
the clip through the heat sink and circuit board until it locks.
Solder the amplifier pins to the circuit side of the circuit
board.
4. The four holes at the corners of the circuit board are for
mounting #6 standoff spacers if desired.
5. Add other components as necessary to complete your ap-
plication circuit.
BEFORE YOU GET STARTED
* All Apex amplifiers should be handled using proper ESD
precautions.
* Always use thermal grease between the amplifier and heat-
sink.
* Always use adequate power supply bypassing.
* 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.
APEX MICROTECHNOLOGY CORPORATION 5980 NORTH SHANNON ROAD TUCSON, ARIZONA 85741 USA APPLICATIONS HOTLINE: 1 (800) 546-2739
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EK07
EVALUATION KIT
FOR SA07 PIN-OUT
Figure 1 shows the schematic of the
evaluation kit's pre-wired connections
Components supplied with the kit are
marked with an asterisk (*). All other con-
nections are made via the bread-boarding
areas of the circuit board.
FIGURE 1.
APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
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EVALUATION KIT
FOR SA07 PIN-OUT
EK07
FIGURE 2.
Figure 2 shows a suggested
simple test circuit that you can build
to gain a familiarity with the evalua-
tion kit as well as the amplifier. At
the A OUT or B OUT pads relative
to power ground you should observe
a square wave with a frequency of
approximately 500kHz, 30V p-p
which is being modulated from ap-
proximately 0 to 100 % duty cycle
at a rate of 1 Hz.
APEX MICROTECHNOLOGY CORPORATION 5980 NORTH SHANNON ROAD TUCSON, ARIZONA 85741 USA APPLICATIONS HOTLINE: 1 (800) 546-2739
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This data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. All specifications are subject to change without notice.
EK07U REV C OCTOBER 2004 2004 Apex Microtechnology Corp.
EK07
EVALUATION KIT
FOR SA07 PIN-OUT
FIGURE 3. PCB
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