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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 | Product series | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | Q (%) | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | Pins | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 885012007057 | SPEC | 8 files | WCAP-CSGP MLCCs 50 V(DC) | 100 pF | ±5% | 50 | 0805 | -55 °C up to +125 °C | 1000 | – | 10 GΩ | NP0 Class I | 2 | 1.25 | 0.5 | – | – | 0.6 | – | – | – | 7" Tape & Reel | ||
| 885012207092 | SPEC | 8 files | WCAP-CSGP MLCCs 50 V(DC) | 10 nF | ±10% | 50 | 0805 | -55 °C up to +125 °C | – | 2.5 | 10 GΩ | X7R Class II | 2 | 1.25 | 0.5 | – | – | 0.8 | – | – | – | 7" Tape & Reel | ||
| 885012207078 | SPEC | 7 files | WCAP-CSGP MLCCs 25 V(DC) | 1 µF | ±10% | 25 | 0805 | -55 °C up to +125 °C | – | 5 | 0.5 GΩ | X7R Class II | 2 | 1.25 | 0.5 | – | – | 1.25 | – | – | – | 7" Tape & Reel | ||
| 885012208069 | SPEC | 8 files | WCAP-CSGP MLCCs 25 V(DC) | 10 µF | ±10% | 25 | 1206 | -55 °C up to +125 °C | – | 10 | 0.01 GΩ | X7R Class II | 3.2 | 1.6 | 0.5 | – | – | 1.6 | – | – | – | 7" Tape & Reel | ||
 | 61301011021 | SPEC | – | 6 files | WR-PHD 2.54 mm THT Angled Pin Header | – | – | – | – | -40 °C up to +105 °C | – | – | 1000 MΩ | – | 25.4 | – | – | 10 | Single | – | Pin Header | Angled | 3 | Bag | |
| 750343786 | SPEC | – | – | Flyback Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 750344031 | SPEC | – | – | Flyback Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 885012007057 | SPEC | |
| 885012207092 | SPEC | |
| 885012207078 | SPEC | |
| 885012208069 | SPEC | |
| 61301011021 | SPEC | – |
| 750343786 | SPEC | – | |
| 750344031 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | Q (%) | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | Pins | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples |
|---|