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Overview
| Topology | Power Factor Correction |
| Input voltage | 90-265 V |
| Output 1 | 20 V / 15 A |
Description
The NCP1632 integrates a dual MOSFET driver for interleaved PFC applications. Interleaving consists of paralleling two small stages in lieu of a bigger one, more difficult to design. This approach has several merits like the ease of implementation, the use of smaller components or a better distribution of the heating. Also, Interleaving extends the power range of Critical Conduction Mode that is an efficient and cost−effective technique (no need for low trr diodes). In addition, the NCP1632 drivers are 180° phase shifted for a significantly reduced current ripple. Housed in a SOIC16 package, the circuit incorporates all the features necessary for building robust and compact interleaved PFC stages, with a minimum of external components
Features
- Near−Unity Power Factor
- Substantial 180° Phase Shift in All Conditions Including Transient Phases
- Frequency Clamped Critical Conduction Mode (FCCrM) i.e., Fixed Frequency, Discontinuous Conduction Mode Operation with Critical Conduction Achievable in Most Stressful Conditions
- FCCrM Operation Optimizes the PFC Stage Efficiency Over the Load Range
- Out−of−phase Control for Low EMI and a Reduced rms Current in the Bulk Capacitor
- Frequency Fold−back at Low Power to Further Improve the Light Load Efficiency
- Accurate Zero Current Detection by Auxiliary Winding for Valley Turn On
- Fast Line / Load Transient Compensation
- High Drive Capability: −500 mA / +800 mA
- Signal to Indicate that the PFC is Ready for Operation (“pfcOK” Pin)
- VCC Range: from 10 V to 20 V
Typical applications
- Computer Power Supplies, All Off Line Appliances Requiring Power Factor Correction
- LCD / Plasma Flat Panels
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Safety Class | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | Pitch(mm) | Packaging | Endurance(h) | IRIPPLE(mA) | ILeak(µA) | DF(%) | Ø D(mm) | IR(A) | L(mH) | RDC max.(mΩ) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WCAP-FTX2 Film Capacitors, Across the mains, 680 nF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTX2 Film Capacitors | Capacitance680 nF | Safety ClassX2 | Rate of Voltage Rise230 V/µs | Dissipation Factor0.1 % | Insulation Resistance14.71 GΩ | Pitch15 mm | PackagingBulk | – | – | – | – | – | – | – | – | Rated Voltage275 V (AC) | – | – | Length18 mm | Width10 mm | Height16 mm | MountBoxed THT | ||||
 | WE-CMBNC Common Mode Power Line Choke Nanocrystalline, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMBNC Common Mode Power Line Choke Nanocrystalline | – | – | – | – | – | – | – | – | – | – | – | – | Rated Current5 A | Inductance9 mH | DC Resistance32 mΩ | Rated Voltage300 V (AC) | Insulation Test Voltage2100 V (AC) | MaterialNanocrystalline | Length23 mm | Width13.5 mm | Height26 mm | MountTHT | ||||
 | WCAP-ATUL Aluminum Electrolytic Capacitors, –, 1000 µF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATUL Aluminum Electrolytic Capacitors | Capacitance1000 µF | – | – | – | – | Pitch5 mm | PackagingAmmopack | Endurance 10000 | Ripple Current1800 mA | Leakage Current250 µA | Dissipation Factor14 % | Diameter13 mm | – | – | – | Rated Voltage25 V (AC) | – | – | Length20 mm | – | – | – |