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Onsemi NCV3843BVD1R2G | Demoboard 6.6KW OBC / Inrush Current Limit Board
High Performance Current Mode Controllers
Overview
| Topology | LLC Resonant Converter |
| Input voltage | 90-264 V |
| Output 1 | 450 V / 16 A |
| IC revision | 0.9 |
Description
The NCV3843BV is a high performance fixed frequency current mode controller. They are specifically designed for Off−Line and DC−DC converter applications offering the designer a cost−effective solution with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle−by−cycle current limiting, programmable output deadtime, and a latch for single pulse metering. These devices are available in a surface mount (SOIC−8) plastic package as well as the 14−pin plastic surface mount (SOIC−14). The SOIC−14 package has separate power and ground pins for the totem pole output stage. The NCV3843BV is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).
Features
- Trimmed Oscillator for Precise Frequency Control
- Oscillator Frequency Guaranteed at 250 kHz
- Current Mode Operation to 500 kHz
- Automatic Feed Forward Compensation
- Latching PWM for Cycle−By−Cycle Current Limiting
- Internally Trimmed Reference with Undervoltage Lockout
- High Current Totem Pole Output
- Undervoltage Lockout with Hysteresis
- Low Startup and Operating Current
- These are Pb−Free Devices
Typical applications
- Power Supplies
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | Q(%) | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | Pins | Type | Mount | IR(A) | Working Voltage(V (AC)) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 50 V(DC), 100 pF, ±5% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 pF | Capacitance±5% | Rated Voltage50 V (DC) | Size0805 | Operating Temperature -55 °C up to +125 °C | Q-Factor1000 % | – | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Length2 mm | Width1.25 mm | Height0.6 mm | Pad Dimension0.5 mm | Packaging7" Tape & Reel | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 10 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance10 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0805 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length2 mm | Width1.25 mm | Height0.8 mm | Pad Dimension0.5 mm | Packaging7" Tape & Reel | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 25 V(DC), 1 µF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | Capacitance1 µF | Capacitance±10% | Rated Voltage25 V (DC) | Size0805 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor5 % | Insulation Resistance0.5 GΩ | Ceramic TypeX7R Class II | Length2 mm | Width1.25 mm | Height1.25 mm | Pad Dimension0.5 mm | Packaging7" Tape & Reel | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 25 V(DC), 10 µF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | Capacitance10 µF | Capacitance±10% | Rated Voltage25 V (DC) | Size1206 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor10 % | Insulation Resistance0.01 GΩ | Ceramic TypeX7R Class II | Length3.2 mm | Width1.6 mm | Height1.6 mm | Pad Dimension0.5 mm | Packaging7" Tape & Reel | – | – | – | – | – | |||||
 | WR-PHD Pin Header - Single, –, – | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | – | – | – | Operating Temperature -40 °C up to +105 °C | – | – | Insulation Resistance1000 MΩ | – | Length25.4 mm | – | – | – | PackagingBag | Pins10 | TypeAngled | MountTHT | Rated Current3 A | Working Voltage250 V (AC) | ||
750343786 | Flyback Transformer, –, – | Simulation– | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Flyback Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
750344031 | Flyback Transformer, –, – | Simulation– | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Flyback Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |