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Summary of Contents for Texas Instruments UCC3580EVM
- Page 1 User Guide UCC3580EVM Flyback Converters, Active Clamp vs Hard-Switched Evaluation Board and List of Materials User’s Guide...
- Page 2 EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety measures typically found in the end product incorporating the goods.
- Page 3 EVM User’s Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright 2001, Texas Instruments Incorporated...
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Page 4: Table Of Contents
....... . . UCC3580EVM Silk Screen (only top layer has a silk screen) Tables . -
Page 5: Introduction
UCC3580EVM, configured for either active clamp operation or hard-switched operation, as shown in Figure 1. Close the ac line switch and verify that the UCC3580EVM is operating correctly (12 V should be measured by the hand-held DVM on the converter output). Using the appropriate oscilloscope probes, observe the main transistor drain source voltage (TP14 to TP13) and the cathode to anode voltage of the output rectifier (TP6 to TP8). -
Page 6: Added Features
Begin with an UCC3580EVM in the active-clamp configuration (original configuration). Refer to Table 3 and Table 4 for the components to remove and add, respectively in order for the UCC3580EVM to match the schematic in Figure 3. The additional components in Table 4 are supplied in the kit that is included with the UCC3580EVM. -
Page 7: Test Setup And Test Points
200V and ground referenced. 2500V,peak Use the P6138A for all voltage observations that are less than 200V and ground referenced. Figure 1. Recommended Test Setup for the UCC3580EVM Table 1. List of Test Points Test Point Signal Name Voltage Range... -
Page 8: Application Drawings And Parts List
SLUU085 – November 2001 Application Drawings and Parts List Active Clamp Configuration UDG–00014 Note: High-temperature component. See EVM Warnings and Restrictions at the front of this document. Figure 2. Flyback Converter Populated for Active Clamp Operation UCC3580EVM... -
Page 9: Parts List For Active Clamp Configuration
Connector Toroid, 18 µH Magnetek 12.06 mm FIT68–7 Common mode, 2 mH Panasonic 10X16.5 mm ELF–18N032A Choke Choke E25/10/6–3F3 core, 10-pins, 16 µH Century Magnetics 5.1X15.6 mm CMI–2408 400 V, 0.55 Ω, 10 A QA, QM TO–220AB IRF740 MOSFET UCC3580EVM... - Page 10 TP1 to Test Point White, 0.063 inch dia. Keystone 1.6 mm 5012 TP20 2 holes 7.62 mm Jumper 156”hole, Nylon, in PWB corner holes Richco SP3–10–01 Support Post 15.9 mm –– 2-Layer, 2 oz, 9.00”(L) x 6.00”(W) x 0.062”(T) SLUP054 UCC3580EVM...
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Page 11: Hard-Switched Configuration
SLUU085 – November 2001 Hard-Switched Configuration UDG–00015 Note: High-temperature component. See EVM Warnings and Restrictions at the front of this document. Figure 3. Flyback Converter Populated for Hard-Switched Operation UCC3580EVM... -
Page 12: Conversion From Active Clamp To Hard-Switched Configuration: Remove List
Pin 1 to pin 4, 20AWG, insulated 14 mm 5 W, wire, vertical, 1 kΩ, 5% Ohmite 5 mm TWM–5J1K0 5 W, wire, vertical, 6.8 kΩ, 5% Ohmite 5 mm TWM–5J6K8 Resistor Resistor 5 W, wire, vertical, 4.7 Ω, 5% Ohmite 5 mm TWM–5J4R7 UCC3580EVM... -
Page 13: Traces And Silkscreen
SLUU085 – November 2001 Traces and silkscreen Figures 4, 5, and 6 show the traces and silkscreen for the UCC3580EVM. Traces Figure 4. UCC3580EVM Layout, Top Traces Figure 5. UCC3580EVM Layout, Bottom Traces UCC3580EVM... -
Page 14: Silkscreen
SLUU085 – November 2001 Silkscreen Figure 6. UCC3580EVM Silk Screen (only top layer has a silk screen) Reference [1] R.B. Ridley, Switching power supply design information, design tips, frequency response analyzers, and educational material for power supplies. See web site located at http://www.ridleyengineering.com. - Page 15 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
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