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Overview
| Topology | LLC Resonant Converter |
| Input voltage | 90-264 V |
| Output 1 | 250 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 | PCB/Cable/Panel | Modularity | Wire Section | ISAT (A) | fres (MHz) | C | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | Pitch (mm) | Tol. C | Size | Operating Temperature | Q | DF (%) | Ceramic Type | Fl (mm) | SW (mm) | Ti | To | Endurance (h) | IRIPPLE (mA) | ILeak (µA) | Ø D (mm) | IR (A) | L (mH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | VRMS (V) | VDC (V) | VBR (V) | IPeak (A) | Wmax (J) | PDiss (W) | Application | VDE Approval | Pins (Value) (pcs) | Rows | G (mm) | Gender | Type | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 691101710002 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-TBL Series 101 - 5.00 mm Horizontal Entry Modular | PCB | Yes | 26 to 14 (AWG) 0.5 to 2.5 (mm²) | – | – | – | – | – | – | – | – | 5 | – | – | -40 °C up to +105 °C | – | – | – | – | – | – | – | – | – | – | – | 16 | – | – | – | – | – | 10 | – | 12.6 | THT | – | – | – | – | – | – | Wire Protector | 40022614 | 2 | – | – | – | Horizontal | Box | |
 | 7448063801 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMBNC Common Mode Power Line Choke Nanocrystalline | – | – | – | – | – | – | – | – | – | – | – | – | – | XXL | -55 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | 38 | 1.5 | 2.3 | 300 | 2100 | Nanocrystalline | 48 | 27.5 | 46 | THT | – | – | – | – | – | – | – | 40048238 | 4 | – | 5 | – | – | – | ||
 | 820423211 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WE-VD Disk Varistor | – | – | – | – | – | – | – | – | – | – | -40 °C up to +85 °C | – | – | 20 mm | -40 °C up to +85 °C | – | – | – | – | – | – | – | – | – | – | 23 | – | – | – | – | – | – | 23 | 5.3 | 27 | THT | 320 | 418 | 510 | 10000 | 382 | 1 | – | Yes | – | – | – | – | – | – | ||
 | 890324026034CS | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTX2 Film Capacitors | – | – | – | – | – | 2.2 µF | X2 | 170 | 0.1 | 4.55 GΩ | -40 °C up to +105 °C | 22.5 | ±10% | Pitch 22.5 mm | -40 °C up to +105 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 275 | – | – | 26 | 15 | 25 | Boxed THT | – | – | – | – | – | – | Across the mains | – | – | – | 4 | – | – | Carton | ||
 | 784778220 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PDA SMT Shielded Power Inductor | – | – | – | 1.6 | 17.2 | – | – | – | – | – | – | – | – | 7332 | -40 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | 1.55 | 0.022 | 187 | – | – | – | 7.3 | 7.3 | 3.2 | SMT | – | – | – | – | – | – | – | – | 2 | – | – | – | – | – | ||
 | 860020473010 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-ATG5 Aluminum Electrolytic Capacitors | – | – | – | – | – | 150 µF | – | – | – | – | -40 °C up to +105 °C | 2.5 | ±20% | – | – | – | 14 | – | – | – | – | – | 2000 | 180 | 37.5 | 6.3 | – | – | – | 25 | – | – | 11 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Ammopack | ||
 | 860080574011 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-ATLI Aluminum Electrolytic Capacitors | – | – | – | – | – | 220 µF | – | – | – | – | -55 °C up to +105 °C | 3.5 | ±20% | – | – | – | 9 | – | – | – | – | – | 3000 | 1000 | 77 | 8 | – | – | – | 35 | – | – | 16 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Ammopack | ||
| 860080475017 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-ATLI Aluminum Electrolytic Capacitors | – | – | – | – | – | 560 µF | – | – | – | – | -55 °C up to +105 °C | 5 | ±20% | – | – | – | 10 | – | – | – | – | – | 5000 | 1450 | 140 | 10 | – | – | – | 25 | – | – | 20 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Ammopack | ||
 | 860160572003 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-ATLL Aluminum Electrolytic Capacitors | – | – | – | – | – | 22 µF | – | – | – | – | -55 °C up to +105 °C | 2 | ±20% | – | – | – | 12 | – | – | – | – | – | 4000 | 162 | 7.7 | 5 | – | – | – | 35 | – | – | 11 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Ammopack | ||
 | 861141486026 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-AI3H Aluminum Electrolytic Capacitors | – | – | – | – | – | 680 µF | – | – | – | – | -25 °C up to +105 °C | 10 | ±20% | 35.0 x 55.0 | -25 °C up to +105 °C | – | 20 | – | – | – | – | – | 3000 | 2200 | 1659.52 | 35 | – | – | – | 450 | – | – | 57 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Tray | ||
 | 885012007057 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | 100 pF | – | – | – | 10 GΩ | – | – | ±5% | 0805 | -55 °C up to +125 °C | 1000 | – | NP0 Class I | 0.5 | – | – | – | – | – | – | – | – | – | – | 50 | – | – | 2 | 1.25 | 0.6 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 7" Tape & Reel | ||
| 885012207072 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 25 V(DC) | – | – | – | – | – | 100 nF | – | – | – | 5 GΩ | – | – | ±10% | 0805 | -55 °C up to +125 °C | – | 3.5 | X7R Class II | 0.5 | – | – | – | – | – | – | – | – | – | – | 25 | – | – | 2 | 1.25 | 0.8 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 7" Tape & Reel | ||
| 885012207079 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 25 V(DC) | – | – | – | – | – | 2.2 µF | – | – | – | 0.05 GΩ | – | – | ±10% | 0805 | -55 °C up to +125 °C | – | 10 | X7R Class II | 0.5 | – | – | – | – | – | – | – | – | – | – | 25 | – | – | 2 | 1.25 | 1.25 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 7" Tape & Reel | ||
| 885012207086 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | 1 nF | – | – | – | 10 GΩ | – | – | ±10% | 0805 | -55 °C up to +125 °C | – | 2.5 | X7R Class II | 0.5 | – | – | – | – | – | – | – | – | – | – | 50 | – | – | 2 | 1.25 | 0.8 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 7" Tape & Reel | ||
| 885012207088 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | 2.2 nF | – | – | – | 10 GΩ | – | – | ±10% | 0805 | -55 °C up to +125 °C | – | 2.5 | X7R Class II | 0.5 | – | – | – | – | – | – | – | – | – | – | 50 | – | – | 2 | 1.25 | 0.8 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 7" Tape & Reel | ||
| 885012207092 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | 10 nF | – | – | – | 10 GΩ | – | – | ±10% | 0805 | -55 °C up to +125 °C | – | 2.5 | X7R Class II | 0.5 | – | – | – | – | – | – | – | – | – | – | 50 | – | – | 2 | 1.25 | 0.8 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 7" Tape & Reel | ||
| 885012207103 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | 1 µF | – | – | – | 0.1 GΩ | – | – | ±10% | 0805 | -55 °C up to +125 °C | – | 10 | X7R Class II | 0.5 | – | – | – | – | – | – | – | – | – | – | 50 | – | – | 2 | 1.25 | 1.25 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 7" Tape & Reel | ||
| 885012208069 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 25 V(DC) | – | – | – | – | – | 10 µF | – | – | – | 0.01 GΩ | – | – | ±10% | 1206 | -55 °C up to +125 °C | – | 10 | X7R Class II | 0.5 | – | – | – | – | – | – | – | – | – | – | 25 | – | – | 3.2 | 1.6 | 1.6 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 7" Tape & Reel | ||
| 885012208094 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | 4.7 µF | – | – | – | 0.02 GΩ | – | – | ±10% | 1206 | -55 °C up to +125 °C | – | 10 | X7R Class II | 0.5 | – | – | – | – | – | – | – | – | – | – | 50 | – | – | 3.2 | 1.6 | 1.6 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 7" Tape & Reel | ||
 | 971080365 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WA-SPAIE Plastic Spacer Stud, metric, internal/ external | – | – | – | – | – | – | – | – | – | – | – | – | – | – | -30 °C up to +110 °C | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Polyamide | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Bag | ||
 | 971080324 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WA-SBRIE Brass Spacer Stud, metric, internal/external | – | – | – | – | – | – | – | – | – | – | – | – | – | – | -55 °C up to +150 °C | – | – | – | – | 5.5 | M3 | M3 | – | – | – | – | – | – | – | – | – | Brass | 8 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Carton | |
 | 61300421821 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm Dual Socket Header | – | – | – | – | – | – | – | – | – | 1000 MΩ | – | 2.54 | – | – | -40 °C up to +105 °C | – | – | – | – | – | – | – | – | – | – | – | 3 | – | – | – | – | – | 5.58 | – | – | THT | – | – | – | – | – | – | – | – | 4 | Dual | – | Socket Header | Straight | Tray | |
 | 61301021821 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm Dual Socket Header | – | – | – | – | – | – | – | – | – | 1000 MΩ | – | 2.54 | – | – | -40 °C up to +105 °C | – | – | – | – | – | – | – | – | – | – | – | 3 | – | – | – | – | – | 13.2 | – | – | THT | – | – | – | – | – | – | – | – | 10 | Dual | – | Socket Header | Straight | Tray |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | PCB/Cable/Panel | Modularity | Wire Section | ISAT (A) | fres (MHz) | C | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | Pitch (mm) | Tol. C | Size | Operating Temperature | Q | DF (%) | Ceramic Type | Fl (mm) | SW (mm) | Ti | To | Endurance (h) | IRIPPLE (mA) | ILeak (µA) | Ø D (mm) | IR (A) | L (mH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | VRMS (V) | VDC (V) | VBR (V) | IPeak (A) | Wmax (J) | PDiss (W) | Application | VDE Approval | Pins (Value) (pcs) | Rows | G (mm) | Gender | Type | Packaging | Samples |
|---|