(Hong Kong)
Product Summary
The UC2854BDW is the advanced high-power factor prdregulator. The UC2854BDW achieves near unity power factor by shaping the AC input line current waveform to correspond to the AC input line voltage. Average current mode control maintains stable, low distortion sinusoidal line current without the need for slope compensation, unlike peak current mode control.
Parametrics
UC2854BDW absolute maximum ratings: (1)Supply voltage, VCC: 22 V; (2)GTDRV current, IGTDRV Continuous: 0.5 A; (3)GTDRV Current, IGTDRV 50% duty cycle: 1.5 A; (4)Input voltage, VSENSE, VRMS, ISENSE MOUT: 11 V; (5)Input voltage, PKLMT: 5 V; (6)Input current RSET, IAC, PKLMT, ENA: 10 mA; (7)Power dissipation: 1 W; (8)Junction temperature: -55 to 150℃; (9)Storage temperature: -65 to 150℃.
Features
UC2854BDW features: (1)Controls Boost PWM to Near-Unity Power Factor; (2)Limits Line Current Distortion To < 3%; (3)World-Wide Operation Without Switches; (4)Accurate Power Limiting; (5)Fixed-Frequency Average Current-Mode Control; (6)High Bandwidth (5 MHz), Low-Offset Current Amplifier; (7)Integrated Current- and Voltage Amplifier Output Clamps; (8)Multiplier Improvements: Linearity, 500 mV; (9)VAC Offset (Eliminates External Resistor), 0 V to 5 V Multout Common-Mode Range; (10)VREF GOOD Comparator; (11)Faster and Improved Accuracy ENABLE Comparator; (12)UVLO Options (16 V/10 V or 10.5 V/10 V); (13)300-μA Start-Up Supply Current.
Diagrams
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 UC2854BDW |
Texas Instruments |
Power Factor Correction ICs Enhanced High Power Factor Preregulator |
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UC2854BDWG4 |
Texas Instruments |
Power Factor Correction ICs Enhanced High Power Factor Preregulator |
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UC2854BDWTRG4 |
Texas Instruments |
Power Factor Correction ICs Enhanced High Power Factor Preregulator |
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UC2854BDWTR |
Texas Instruments |
Power Factor Correction ICs Enhanced High Power Factor Preregulator |
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