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Texas Instruments UCC28221 User Manual
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Texas Instruments UCC28221 User Manual

Texas Instruments UCC28221 User Manual

200-w evaluation module (evm)
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User's Guide
UCC28221 200-W Evaluation Module
(EVM)
User's Guide
1

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Summary of Contents for Texas Instruments UCC28221

  • Page 1 User’s Guide UCC28221 200-W Evaluation Module (EVM) User’s Guide...
  • Page 2 IMPORTANT: TI is providing the enclosed HPA035A evaluation module under the following conditions: This evaluation module (EVM) being provided by Texas Instruments (TI) is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by Texas Instruments to be fit for commercial use.
  • 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  2003, Texas Instruments Incorporated...

  • Page 4: Table Of Contents

    (ESR) in your output capacitance. The converter design also takes advantage of the on board 110-V internal JFET start up circuit of the UCC28221 that removes the need of an external trickle charge resistor for boot strapping. This circuit turns off after auxiliary power is supplied to the device conserving power.
  • Page 5 SLUU173A - October 2003 − Revised December 2003 Figure 1. Typical Application Schematic UCC28221 200-W Evaluation Module (EVM)

  • Page 6: Electrical Characteristics

    VIN = 36 V CH. 3 = V OUT VIN = 48 V CH. 3 100 mV/div VIN = 76 V V OUT − Output Power −W t − Time − 500 µs/div Figure 2 Figure 3 UCC28221 200-W Evaluation Module (EVM)
  • Page 7 4.4 A/div 4.4 A/div CH. 2 CH. 2 4.4 A/div 4.4 A/div CH. 1 CH. 1 4.4 A/div 4.4 A/div t − Time − 1 µs/div t − Time − 1 µs/div Figure 6 Figure 7 UCC28221 200-W Evaluation Module (EVM)

  • Page 8: Layout

    SLUU173A - October 2003 − Revised December 2003 Layout Figure 8. Top View Figure 9. Bottom View UCC28221 200-W Evaluation Module (EVM)

  • Page 9: List Of Materials

    **Inductor, SMD, 470 µH, 62 mA, 26 mΩ, 0.177 x 0.126 NL453232T−471J **Inductor, SMT, 3.2 µH, 18 A RMS , 6.8 mΩ, 0.51 x 0.51 L2, L3 IHLP−5050FD− RZ−3R3−M−01 MOSFET, N-channel, 200 V, 0.030 Ω, D2PAK/HS Q1, Q2 VISHAY SUM65N20−30 UCC28221 200-W Evaluation Module (EVM)
  • Page 10 (4). Reference designators marked with an asterisk (’**’) cannot be substituted. All other components can be substituted with equivalent MFG’s components. References Datasheet, UCC28220/1 Dual Interleaved PWM Controller with Programmable Maximum Duty Cycle, TI Literature No. SLUS544 UCC28221 200-W Evaluation Module (EVM)
  • Page 11 TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions:...