Instruction/ maintenance manual of the product UCC28060EVM Texas Instruments
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1 Description 2 Thermal Requirements 3 Electrical Characteristics User's Guide SLUU280B – May 2007 – Revised July 2008 UCC28060EVM 300-W Interleaved PFC Pre-Regulator The UCC28060 is a dual-phase, transition-mode Power Factor Correction (PFC) pre-regulator.
4 Schematics + + Schematics www.ti.com Figure 1 and Figure 2 show the schematics for this EVM. See the List of Materials for specific values. To evaluate inductor ripple currents, Jumpers JP8 and JP9 can be removed and replaced with current loops. Figure 1.
+ www.ti.com Schematics Figure 2. Controller Circuitry SLUU280B – May 2007 – Revised July 2008 UCC28060EVM 300-W Interleaved PFC Pre-Regulator 3 Submit Documentation Feedback.
5 Test Setup and Power-Up/Power-Down Instructions Isolatio n Transformer 0 to 300W Load VM + 13V Bias S upply Test Setup and Power-Up/Power-Down Instructions www.ti.com WARNING There are high voltages present on the pre-regulator. It should only be handled by experienced power supply professionals.
6 Typical Performance Data E ff ici e ncy 90.0% 91.0% 92.0% 93.0% 94.0% 95.0% 96.0% 97.0% 98.0% 99.0% 100.0% 10% 20% 3 0% 40% 50% 6 0% 70% 80% 9 0% 100% % Outpu t Pow e r Efficiency (% ) E ff ice ncy at V in 85V R M S E ff ice ncy at V in = 265V R M S E ff ici e ncy a t V in = 11 5V RMS 91.
E ff ici e ncy a t V in = 23 0V RMS 85.0% 87.0% 89.0% 91.0% 93.0% 95.0% 97.0% 99.0% 10% 2 0% 30 % 40% 5 0% 60 % 70% 80% 90% 100 % % Output Pow e r Efficiency (%) With Phas e M anage m e n t Withou t Phas e Man age m e nt 1.40706 1.17256 0.93805 0.70354 0.
6.1 Output Ripple Voltage at Full Load 6.2 Input Ripple Current Cancellation www.ti.com Typical Performance Data Figure 8 illustrates the output ripple voltage. Figure 8. V OUT Ripple, P OUT = 300 W Figure 9 through Figure 14 show the input current (M 1 = I L1 + I L2 ), Inductor Ripple Current (I L1 , I L2 ) versus rectified line voltage.
Typical Performance Data www.ti.com Figure 11. Inductor and Input Ripple Current Figure 12. Inductor and Input Ripple Current at 265 V RMS Input at Peak Line Voltage at 265 V RMS Input at Half Peak Line Voltage Figure 13. Inductor and Input Ripple Current Figure 14.
6.3 Startup Characteristics 6.4 Brownout Protection www.ti.com Typical Performance Data Figure 15 and Figure 16 illustrate the UCC28060EVM startup characteristics.
6.5 Line Transient Typical Performance Data www.ti.com A line transient test was conducted with an ac source on the reference design. The line was varied from 230 V RMS to 115 V RMS to 230 V RMS and the transient response was evaluated in each case.
7 Reference Design Assembly Drawing C3 C2 Outpu t 390V Maximum Load 0.77A 13 www.ti.com Reference Design Assembly Drawing Figure 20 and Figure 22 show the top and bottom layers (respectively) of the UCC28060EVM.
13 C17 D2 Output 390V Maximum Load 0.77A JP8 JP9 8 List of Materials List of Materials www.ti.com Figure 22. Bottom Layer Assembly Table 2 lists the EVM components as configured according to the schematics (see Section 4 ).
www.ti.com List of Materials Table 2. List of Materials (continued) Qty RefDes Value Description Size Part Number MFR 1 JP1 923345-20-C Jumper, 1.600 inch length, PVC Insulation, 0.035in dia. Cut to Dimension 3M AWG 22 3 JP2, JP4, JP5 923345-20-C Jumper, 2.
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