EK31

EK31 Evaluation Kit APPLICABLE PARTS (SOLD SEPARATELY) • • • • • • • PA01 PA10 PA12 PA51 PA61 PA73 PA119 INTRODUCTION This easy to use kit provides a platform with good circuit board layout and grounding to evaluate Power Amplifiers PA01, PA10, PA12, PA51, PA61, PA73 and PA119. With additional prototype area, it is flexible enough to analyze a multitude of standard or proprietary circuit configurations. All components are provided with the kit. Similar circuitry is used for evaluation and the circuit for a particular package can be changed using jumpers. External connections to the evaluation kit can be made through the connectors at the edges of the circuit. The circuit provides a line termination of 50Ω. All the Power amplifiers are configured for a gain of 21. This evaluation kit provides flexibility for modify‐ ing the gain, in inverting or non‐inverting mode and for using a differential amplifier configuration. Figure 1: EK31 Circuit Configuration Diagram www.apexanalog.com © Apex Microtechnology Inc. All rights reserved Aug 2015 EK31U Rev A EK31 Figure 2: PA01, PA10, PA12, PA51, PA61, PA73 Circuit Configuration Diagram Figure 3: PA119 Circuit Configuration Diagram 2 EK31U Rev A EK31 Figure 4: EVAL 76 PCB Layout EK31U Rev A 3 EK31 PARTS LIST Reference Manufacturer Part # Description QTY PR03000205109JAC00 51Ω, 3W, 5% 1 Resistors RT RIN‐1, RIN‐2 RN60D1801FB14 1.8KΩ, 1/4W, 1% 2 RFB1‐B, RFB3‐B RN60D1802FB14 18KΩ, 1/4W, 1% 2 RLIMA1 MP930‐.10‐1% 0.1Ω, 30W, 1% 2 RLIMB2 MP930‐.2‐1% 0.2Ω, 30 W, 1% 2 RIS0‐1, RIS0‐2 N/A 0Ω, Wire Jumper 2 EVAL76 Printed Circuit Board 1 CBP‐2, CBP‐4 338‐1537‐ND ALUM, 2200uF 2 CBP‐1, CBP‐3 QXP2E105KRPT FILM, 1uF, 250DC 2 CC1 CD15ED220J03F MICA, 22 pF, 500VDC 1 D1, D2 1N4148‐T Switching Diode 2 D3, D4 MUR420RLG Rectifier, Ultra Fast 2 HS13 Heat Sink For Amplifier 1 HS23 Heat Sink For RLIM 1 TW03 Thermal Washer (PACK Of 10 PCS) 1 MS03 Socket, TO‐3 1 146510CJ BNC Connector, PC Mount 1 91735A190 Screw, Panhead, #8 X 0.25” 4 91735A192 Screw, Panhead, #8 X 0.375” 4 91841A009 Nut, Hex, #8 4 8426 Spacer, Hex, With Stud, #8 X 0.375” 4 8413 Spacer, Hex, With Stud, #6 X 0.375” 4 2221 Standoff, HEX, #8 X 2.00” 4 91735A151 Screw, Panhead, #6 X 0.75” 3 91841A007 Nut, Hex, #6 X 5/16” 3 38660‐7805 Terminal Strip 1 1. RLIMA is used for PA12, PA51, and PA61. 2. RLIMB is used for PA01, PA10, PA73, and PA119. Printed Circuit Boards Eval 76 Capacitors 1. CC is used only for PA119. Diodes Hardware 4 EK31U Rev A EK31 Reference Manufacturer Part # Description TFT20018 NA005‐6” Tubing, Teflon, #18AWG, 6 INCHES 1 QTY Miscellaneous SPC02SVJN‐RC Jumper, Slip On 10 PRPC002SADN‐RC Header, Connector 10 5001 Test Point, PC Mini 10 BEFORE YOU GET STARTED • • • • • • • All Apex amplifiers should be handled using proper ESD precautions. Always use the heat sink and thermal washers included in this kit. Always use adequate power supply bypassing. Do not change the connections while the circuit is powered Initially set all power supplies to the minimum operation levels allowed in the device data sheet. Check for oscillations. Please refer to Application note, AN01 for general operating conditions. ASSEMBLY INSTRUCTIONS During the assembly, please refer to the circuit schematics, assembly drawings, and the data sheet of the part being used on the evaluation kit. 1. Note that each side of the circuit board is identified as either the component side or the DUT side. The component side has the designators printed on that side. 2. All the components are installed on the component side of the board and soldered on the DUT side. 3. A T0‐3 socket (MS03) is supplied with this kit. Using #6 x 0.75" screws (91735A151) provided with the kit, mount the socket from the DUT side of the board. The MS03 socket incorporates two cavities to retain the #6 x 5/16" nuts (91841A007). Insert one #6 nut into each cavity. Make sure the nuts are fully seated into the cavities. 4. Two heat sinks are provided with this kit. Use the larger heat sink (HS13) for the Power amplifiers. Attach the heat sink to the board from the DUT side, using #8 x 0.375" screws (91735A192). Refer to the assem‐ bly drawings for the correct way to attach the heat sink. This is done to keep the socket tightly mounted to the board and to provide support, and eliminate stress so that the socket pins do not move while being soldered from the component side. Once the socket pins are soldered, and the socket is now attached to the board, remove the heat sink, and all the screws. 5. First install all the smaller components on the board. This is done because it becomes difficult to install a smaller part on the board once all the larger components are installed. 6. Refer to the NOTE below the parts list for components to be included for a specific Power amplifier. 7. Except for RLIMA, RLIMB and CC, all other components are common for the seven Power amplifiers. Install the common components first. 8. Ensure that the orientation of the electrolytic capacitors and the diodes match the circuit schematic drawing. 9. Mount the BNC connector provided with the kit (146510CJ) and solder it to the board. Also mount the terminal strip (TSO1) provided in the kit. Refer to the assembly drawings before mounting the terminal strip. EK31U Rev A 5 EK31 10. #8 hex stand offs (91841A009) are also provided with the kit. Install the # 8 x 0.25"screws (91735A190), provided with the kit, from the component side. Attach the standoffs to these screws on the corners of the board. Refer to the assembly drawings while installing the standoffs. 11. Refer to parts specific assembly instruction described in the following sections. Connect all the additional parts for the specific amplifier. 12. Insert the power amplifier into the socket and secure with the #6 screws. Cut the Teflon tubing into 8 pieces, each of length 0.121 (1/8 of an inch) inches approximately. These pieces go onto the pins of the Power Amplifier before inserting it into the socket. This is done to insulate the pins from the heat sink and make sure that the PA is tightly fixed into the socket. An Exacto knife works well for this. Notes: a)The Teflon pieces should not be longer than the suggested length. If the pieces are longer, they may interfere in the seating of the part to the heat sink and create a gap between the heat sink and the part body. 13. Ten thermal washers (TW03) are provided with the kit. The thermal washer is used between the part and the heat sink. A new washer must be used for each mounting. Mount the Power amplifier to the socket using the thermal washer provided with the kit. 14. Connect the external connections via the BNC connector and terminal strip. Hook up power supply and signals as necessary. The amplifier is now ready for testing. 15. Place jumpers J1 and J3 for a non‐inverting amplifier. Place jumper J6. FOR PA01, PA10, PA12, PA51, PA61, AND PA73: (J3 AND J1) (REFER TO FIGURE 2) 1. For these amplifiers, the current limit resistors (RLIM2 and RLIM3 shown in the schematic) will have equal resistance values. 2. Use resistor RLIMA (for RLIM2 and RLIM3) for PA12, PA51 and PA61. Use RLIMB (for RLIM2 and RLIM3) for PA01, PA10 and PA73. 3. Mount these resistors on both the sides of heat sink HS23, and attach them using a #6x0.75 hex screw and nut. Use the lower hole on the heat sink to mount the resistors. 4. Mount the composite heat sink / resistor assembly on the component side of the board FOR PA119 (REFER TO TABLE 1 FOR SPECIFIC COMPONENTS) (REFER TO FIGURE 3) 1. Install the compensation capacitor CC, as shown in the schematic. 2. Install resistor RLIMB (0.2Ω) for RLIM1 and RLIM4 shown in the schematic 3. Mount these resistors on both the sides of heat sink HS23, and attach them using a #6x0.75 hex screw and nut. Use the lower hole on the heat sink to mount the resistors. 4. Mount the composite heat sink / resistor assembly on the component side of the board 6 EK31U Rev A EK31 Figure 5: Bottom View 1 2 3 4 5 1. 2. 3. 4. 5. 4 X #8 X 0.25" SCREW 4 X #8 X 0.375" HEX SPACER 4 X #8 HEX NUT 1 X TW03 THERMAL WASHER 2 X #6 X 0.75” SCREW EK31U Rev A 7 EK31 Figure 6: Top View 6 7 8 9 10 11 6. 7. 8. 9. 10. 11. 8 1 X HS23 HEATSINK 4 X #8 X 0.375" HEX SCREW 4 X #8 X 2” HEX STANDOFF 2 X #6 HEX NUT 1 X MS03 SOCKET 1 X HS13 HEATSINK EK31U Rev A EK31 TEST ASSEMBLY EQUIPMENT NEEDED 1. 2. 3. 4. Power supply Function Generator Oscilloscope Proper heat sinking system (if operating at high current) TEST SETUP Connect the power supply to the terminal strip. Connect the BNC cable from the function generator to the BNC connector marked VIN, mounted on the board. Connect the load to the terminals on the terminal strip. Refer to the amplifier datasheet for typical values of input voltage, frequency and supply voltage. Input and output waveforms can be checked on an Oscilloscope by connecting it to the test points mounted on the board. Begin the test with minimum values of input and supply voltage Note: After everything is connected, switch on the power to the board, and check the socket at each pin without the DUT, for correct voltage / signal at respective pin. Once this is done, plug in the DUT and check for the correct signal. TEST RESULTS Figure 7 shows input (yellow waveform) and output (blue waveform) waveforms for a PA12 power ampli‐ fier connected to a resistive load. The part was tested for an input voltage of 3V p‐p, at 10 kHz frequency. The supply voltage is set at 90 V p‐p. At a gain of 21, an output voltage of 63 V p‐p can be observed (blue wave‐ form). Figure 8 shows the output load current for the PA12 power amplifier. A resistive load of 8 Ω was con‐ nected to the output of the amplifier. In figure 8, the output waveform (blue waveform) represents the output current of 6 Amps p‐p. Figure 7: Voltage Waveforms for PA12 EK31U Rev A 9 EK31 Figure 8: Current Waveforms for PA12 NEED TECHNICAL HELP? CONTACT APEX SUPPORT! For all Apex Microtechnology product questions and inquiries, call toll free 800-546-2739 in North America. For inquiries via email, please contact apex.support@apexanalog.com. International customers can also request support by contacting their local Apex Microtechnology Sales Representative. To find the one nearest to you, go to www.apexanalog.com IMPORTANT NOTICE Apex Microtechnology, Inc. has made every effort to insure the accuracy of the content contained in this document. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (expressed or implied). Apex Microtechnology reserves the right to make changes without further notice to any specifications or products mentioned herein to improve reliability. This document is the property of Apex Microtechnology and by furnishing this information, Apex Microtechnology grants no license, expressed or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Apex Microtechnology owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Apex Microtechnology integrated circuits or other products of Apex Microtechnology. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale. APEX MICROTECHNOLOGY PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN PRODUCTS USED FOR LIFE SUPPORT, AUTOMOTIVE SAFETY, SECURITY DEVICES, OR OTHER CRITICAL APPLICATIONS. PRODUCTS IN SUCH APPLICATIONS ARE UNDERSTOOD TO BE FULLY AT THE CUSTOMER OR THE CUSTOMER’S RISK. Apex Microtechnology, Apex and Apex Precision Power are trademarks of Apex Microtechnology, Inc. All other corporate names noted herein may be trademarks of their respective holders. 10 EK31U Rev A