onsemi NCP1622BECSNT1G, Power Factor Controller, 50 kHz, 30 V 6-Pin, TSOP

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RS-artikelnummer:
172-3387
Tillv. art.nr:
NCP1622BECSNT1G
Tillverkare / varumärke:
ON Semiconductor
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Brand

ON Semiconductor

Maximum Switching Frequency

50 kHz

Start-up Supply Current

70µA

Maximum Source Current

277µA

IC Type

Power Factor Controller IC

Maximum Sink Current

42µA

Maximum Supply Current

800 mA

Zero Power Detection

Yes

Mounting Type

Surface Mount

Package Type

TSOP

Pin Count

6

Dimensions

3.1 x 1.7 x 1mm

Height

1mm

Length

3.1mm

Maximum Operating Supply Voltage

30 V

Maximum Operating Temperature

+125 °C

Minimum Operating Supply Voltage

-0.3 V

Width

1.7mm

Minimum Operating Temperature

-40 °C

The 6-pin PFC controller NCP1622 is designed to drive PFC boost stages. It is based on an innovative Valley Synchronized Frequency Fold-back (VSFF) method. In this mode, the circuit classically operates in Critical conduction Mode (CrM) when control voltage exceeds a programmable value Vctrl,FF. When Vcontrol is below this preset level Vctrl,FF, the NCP1622 linearly decays the frequency down to about 30 kHz until Vcontrol reaches the SKIP mode threshold. VSFF maximizes the efficiency at both nominal and light load.

Critical Conduction Mode with frequency foldback
Optimizes conversion efficiency across load range
Valley Synchronized Frequency Fold-back (VSFF)
Enhanced efficiency at light load conditions compared to CrM PFC
Works with or without a transformer w/ ZCD winding
Reduced inductor cost and simplified design
Dynamic Response Enhancer
Improved transient response for line and load steps