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Typical Performance Data

6Typical Performance Data

Figure 4 through Figure 7 present characteristic performance data for the UCC28060EVM.

Efficiency

 

100.0%

 

 

 

 

 

 

 

 

 

 

99.0%

 

 

 

 

 

 

 

 

 

 

98.0%

 

 

 

 

 

 

 

 

 

 

97.0%

 

 

 

 

 

 

 

 

 

(%)

96.0%

 

 

 

 

Effice ncy at Vin 85V RM S

 

Efficiency

 

 

 

 

 

 

95.0%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Effice ncy at Vin = 265V RM S

 

 

 

 

 

 

 

 

 

 

 

 

94.0%

 

 

 

 

 

 

 

 

 

 

93.0%

 

 

 

 

 

 

 

 

 

 

92.0%

 

 

 

 

 

 

 

 

 

 

91.0%

 

 

 

 

 

 

 

 

 

 

90.0%

 

 

 

 

 

 

 

 

 

 

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

 

 

 

 

 

% Output Pow e r

 

 

 

 

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 efficiency, the unit efficiency was measured with phase management enabled and disabled at 115 VRMS and 230 VRMS input voltages. Phase management improved the light load efficiency up to 3%. Refer to the UCC28060 data sheet for details on how to use the phase management function of this device.

Efficiency at Vin = 115V RMS

 

98.0%

 

97.0%

 

96.0%

(%)

 

Efficiency

95.0%

94.0%

 

 

93.0%

With Phas e M anage m e nt

92.0%

Without Phas e M anage m e nt

91.0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

 

 

 

 

% Output Pow er

 

 

 

 

Figure 5. Efficiency at 115 VRMS, With and Without Phase Management

SLUU280B–May 2007–Revised July 2008

UCC28060EVM 300-W Interleaved PFC Pre-Regulator

5

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Texas Instruments UCC28060EVM specifications Typical Performance Data, Efficiency at 85VRMS and 265VRMS