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Schematics

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Schematics

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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. Interleaved PFC Power Stage

2

UCC28060EVM 300-W Interleaved PFC Pre-Regulator

SLUU280B – May 2007 – Revised July 2008

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Содержание UCC28060EVM

Страница 1: ...ave boost phases This user s guide provides the schematic List of Materials list assembly drawing for a single sided printed circuit board application and test set up information necessary to evaluate...

Страница 2: ...e 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 Interleaved PFC Power Stage 2 UCC28060EVM 300 W...

Страница 3: ...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...

Страница 4: ...output before supplying power to the EVM A separate 13 V bias supply is required to power the UCC28060 control circuitry The unit will start up under no load conditions However for safety a load shoul...

Страница 5: ...e data for the UCC28060EVM Figure 4 Efficiency at 85VRMS and 265VRMS The UCC28060 control device has phase management capability to improve light load efficiency To demonstrate the light load efficien...

Страница 6: ...nt 1 40706 1 17256 0 93805 0 70354 0 46904 0 23453 0 00002 Amplitude A 0 6 12 18 24 30 36 42 48 Harmonic No V 230V IN RMS Typical Performance Data www ti com Figure 6 Efficiency at 230 VRMS With and W...

Страница 7: ...e Current IL1 IL2 versus rectified line voltage From these graphs it can be observed that interleaving reduces the magnitude of input ripple current caused by the inductor ripple current Figure 9 Indu...

Страница 8: ...RMS Input at Peak Line Voltage at 265 VRMS Input at Half Peak Line Voltage Figure 13 Inductor and Input Ripple Current Figure 14 Inductor and Input Ripple Current at VIN 85 VRMS POUT 300 W at VIN 265...

Страница 9: ...hat the RMS input voltage is too low This EVM was designed to go into a brownout state when the line drops below 64 VRMS Once the UCC28060 control device has determined that the input is in a brownout...

Страница 10: ...S to 115 VRMS to 230 VRMS and the transient response was evaluated in each case From the oscilloscope image in Figure 19 it can be observed that the output recovered from line transients within 300ms...

Страница 11: ...s respectively of the UCC28060EVM Note Board layouts are not to scale These figures are intended to show how the board is laid out they are not intended to be used for manufacturing UCC28060EVM PCBs F...

Страница 12: ...itor Ceramic 25V X7R 10 0805 Std Std 2 C2 C3 100 F Capacitor Aluminum 450VDC 20 18mm 40 mm EKXG451ELL101 Nippon MM40S Chemi con 1 C4 0 1 F Capacitor Film 275VAC 20 0 689in 0 236in ECQU2A104BC1 Panason...

Страница 13: ...1 R17 0 00 Resistor Chip 1 10W 1 0805 Std Std 1 R18 6 19k Resistor Chip 1 10W 1 0805 Std Std 1 R19 30 1k Resistor Chip 1 10W 1 0805 Std Std 3 R2 R4 R21 10 0k Resistor Chip 1 10W 1 0805 Std Std 1 R25 1...

Страница 14: ...t This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application engineer o...

Страница 15: ...siness practice TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product wo...

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