Topology | Power Factor Correction |
Input voltage | 90-264 V |
Switching frequency | 20-50 kHz |
Output 1 | 3.3 V / 0.1 A |
Output 2 | 38 V / 1 A |
IC revision | 4 |
The NCP1611 is designed to drive PFC boost stages based on an innovative Current Controlled Frequency Fold−back (CCFF) method. In this mode, the circuit classically operates in Critical conduction Mode (CrM) when the inductor current exceeds a programmable value. When the current is below this preset level, the NCP1611 linearly decays the frequency down to about 20 kHz when the current is null. CCFF maximizes the efficiency at both nominal and light load. In particular, the stand−by losses are reduced to aminimum.
Like in FCCrM controllers, internal circuitry allows near−unity power factor even when the switching frequency is reduced. Housed in a SO−8 package, the circuit also incorporates the features necessary for robust and compact PFC stages, with few external components.
Order Code | Datasheet | Simulation | Downloads | Status | Product series | ISAT (A) | fres (MHz) | Version | Application | Interface Type | Type | Gender | Pins (Value) (pcs) | IR (A) | Working Voltage (V (AC)) | Packaging | IR (A) | L (µH) | RDC max. (Ω) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples | |
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7447462102 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TI Radial Leaded Wire Wound Inductor | 0.27 | 2.3 | Heat Shrinking Tube | – | – | – | – | – | – | – | – | 0.25 | 1000 | 6 | – | – | – | 6 | 6 | 8.5 | THT | |||
744821120 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | – | – | THT | – | – | – | – | 4 | 0.5 | – | – | 0.5 | 20000 | 1 | 250 | 1500 | MnZn | 15 | 7.8 | 17.5 | THT | |||
692221030100 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-COM USB 3.0 Type B Horizontal | – | – | – | USB 3.0 | Type B | Horizontal | Receptacle | 9 | 1.8 | 30 | Tray | 1.8 | – | – | – | – | – | – | – | – | THT | ||
750341950 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | Flyback Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
Order Code | Datasheet | Simulation | |
---|---|---|---|
7447462102 | SPEC | ||
744821120 | SPEC | ||
692221030100 | SPEC | – | |
750341950 | SPEC | – |
Samples |
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Order Code | Datasheet | Simulation | Downloads | Status | Product series | ISAT (A) | fres (MHz) | Version | Application | Interface Type | Type | Gender | Pins (Value) (pcs) | IR (A) | Working Voltage (V (AC)) | Packaging | IR (A) | L (µH) | RDC max. (Ω) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples |
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