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Overview
| Topology | Power Factor Correction |
| Input voltage | 90 V |
| Output 1 | 390 V |
| IC revision | 1 |
Description
The NCP1631 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 NCP1631 drivers are 180° phase shift 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 TransientPhases
- Frequency Clamped Critical Conduction Mode (FCCrM) i.e.,Fixed Frequency, Discontinuous Conduction Mode Operation withCritical Conduction Achievable in Most Stressful Conditions
- FCCrM Operation Optimizes the PFC Stage Efficiency Over theLoad Range
- Out−of−phase Control for Low EMI and a Reduced rms Current inthe Bulk Capacitor
- Frequency Fold−back at Low Power to Further Improve the LightLoad Efficiency
- Accurate Zero Current Detection by Auxiliary Winding for ValleyTurn 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 VSafety Features
- Output Over and Under Voltage Protection
- Brown−Out Detection with a 50−ms Delay to Help Meet Hold−up Time Specifications
- Soft−Start for Smooth Start−up Operation
- Programmable Adjustment of the Maximum Power
- Over Current Limitation
- Detection of Inrush Currents
Typical applications
- All Off Line Appliances Requiring Power Factor
- LCD / Plasma Flat Panels
- Computer Power Supplies
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Pins (Value) (pcs) | Application | PCB/Cable/Panel | Modularity | Type | ISAT (A) | fres (MHz) | IR (A) | L (mH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 691313710003 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-TBL Series 3137 - 5.00 mm Close Horizontal PCB Header | 3 | Pluggable | PCB | No | Horizontal | – | – | 20 | – | – | – | – | – | 17 | – | – | THT | |
 | 744824622 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 4 | – | – | – | – | – | – | 6 | 2.2 | 20 | 250 | 1500 | MnZn | 27.5 | 18.5 | 33 | THT | ||
 | 7447076 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WE-FI Leaded Toroidal Line Choke | – | – | – | – | – | – | – | 6.1 | 0.15 | 45 | – | – | – | 27.5 | 13.6 | – | THT | |
 | 744731471 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TIS Radial Leaded Wire Wound Inductor | – | – | – | – | – | 0.4 | 2.3 | 0.6 | 0.47 | 1300 | – | – | – | 7.8 | 7.8 | 7.5 | THT | ||
| 744731102 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TIS Radial Leaded Wire Wound Inductor | – | – | – | – | – | 0.25 | 1.7 | 0.35 | 1 | 2300 | – | – | – | 7.8 | 7.8 | 7.5 | THT | ||
| 750314724 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | Power Inductor | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 691313710003 | SPEC | – |
| 744824622 | SPEC | |
| 7447076 | SPEC | – |
| 744731471 | SPEC | |
| 744731102 | SPEC | |
| 750314724 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Pins (Value) (pcs) | Application | PCB/Cable/Panel | Modularity | Type | ISAT (A) | fres (MHz) | IR (A) | L (mH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples |
|---|