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Onsemi NCP81231 | Demoboard STR-USBC-4PORT-200W-EVK
NCP81231: Buck Controller, USB Power Delivery and Type-C Applications
Overview
| Topology | Buck Converter |
| Switching frequency | 150-1200 kHz |
| IC revision | 3 |
Description
The NCP81231 is a synchronous buck that is optimized for converting battery voltage or adaptor voltage into power supply rails required in notebook, tablet, and desktop systems, as well as many other consumer devices using USB PD standard and C−Type cables. The NCP81231 is fully compliant to the USB Power Delivery Specification when used in conjunction with a USB PD or C−Type Interface Controller. NCP81231 is designed for applications requiring dynamically controlled slew rate limited output voltage.
Features
- Wide Input Voltage Range: from 4.5 V to 28 V
- Dynamically Programmed Frequency from 150 kHz to 1.2 MHz
- I2C Interface
- Real Time Power Good Indication
- Controlled Slew Rate Voltage Transitioning
- Feedback Pin with Internally Programmed Reference
- High Resolution DAC Voltage
- Two Independent Current Sensing Inputs
- Support Inductor DCR Sensing
- Over Temperature Protection
- Adaptive Non−Overlap Gate Drivers
- Filter Capacitor Switch Control
- 100% Duty Cycle Operation
- Latched Over−Voltage and Over−Current Protection
- Dead Battery Power Support
- 5 x 5 mm QFN32 Package
Typical applications
- Notebooks, Tablets, Desktops, Gaming, Monitors, TVs, and Set Top Boxes, Consumer Electronics,
- Power Banks, Car Chargers, Docking Stations
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | IRP,40K (A) | ISAT,30% (A) | RDC typ. (mΩ) | fres (MHz) | VOP (V) | SW (mm) | Ti | Application | Interface Type | PCB Thickness (mm) | IR (A) | Working Voltage (V (AC)) | H (mm) | Operation Force (Value) (g) | Electrical Life (Cycles) | Actuator Color | Vaporphase process | IR (A) | L (mH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | Mount | Pins (Value) (pcs) | Rows | G (mm) | Gender | Type | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 155124BS73200 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WL-SMSW SMT Mono-color Side View Waterclear | 470 | Blue | 468 | 150 | 3.4 | InGaN | 120 | – | – | – | – | – | – | – | – | – | – | – | – | 1 | – | – | – | – | – | – | – | – | – | – | 3.2 | 1.5 | SMT | – | – | – | – | – | Tape and Reel | ||
| 155124GS73200 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WL-SMSW SMT Mono-color Side View Waterclear | 525 | Green | 520 | 600 | 3.3 | InGaN | 120 | – | – | – | – | – | – | – | – | – | – | – | – | 1 | – | – | – | – | – | – | – | – | – | – | 3.2 | 1.5 | SMT | – | – | – | – | – | Tape and Reel | ||
 | 150060YS75000 | SPEC | 25 files RAY files
| Active i| Production is active. Expected lifetime: >10 years. | WL-SMCW SMT Mono-color Chip LED Waterclear | 590 | Yellow | 595 | 120 | 2 | AlInGaP | 140 | – | – | – | – | – | – | – | – | – | – | – | – | 0.7 | – | – | – | – | – | – | – | – | – | – | 1.6 | 0.8 | SMT | – | – | – | – | – | Tape and Reel | ||
| 150060RS75000 | SPEC | 25 files RAY files
| Active i| Production is active. Expected lifetime: >10 years. | WL-SMCW SMT Mono-color Chip LED Waterclear | 625 | Red | 630 | 250 | 2 | AlInGaP | 140 | – | – | – | – | – | – | – | – | – | – | – | – | 0.7 | – | – | – | – | – | – | – | – | – | – | 1.6 | 0.8 | SMT | – | – | – | – | – | Tape and Reel | ||
 | 744823422 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 4 | – | 25.5 | – | – | – | – | 4 | 2.2 | 30 | 250 | 1500 | MnZn | 23.5 | 13.8 | THT | 4 | – | 3 | – | – | – | ||
 | 61301621021 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm THT Angled Dual Pin Header | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 250 | – | – | – | – | – | 3 | – | – | – | – | – | 20.32 | – | THT | 16 | Dual | – | Pin Header | Angled | Bag | |
 | 971100365 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WA-SPAIE Plastic Spacer Stud, metric, internal/ external | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Polyamide | – | – | – | – | – | – | – | – | Bag | ||
 | 434153017835 | SPEC | – | 5 files | Active i| Production is active. Expected lifetime: >10 years. | WS-TASV J-Bend SMT Tact Switch 3.5x2.9 mm | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 1.7 | 350 | 200000 | Blue | not specified | 0.05 | – | – | 12 | – | – | – | – | – | – | – | – | – | – | Tape and Reel | |
 | 970300365 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WA-SPAII Plastic Spacer Stud, metric, internal/ internal | – | – | – | – | – | – | – | – | – | – | – | – | 6 | M3 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Polyamide | 30 | – | – | – | – | – | – | – | Bag | |
 | 632723300011 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-COM USB 3.1 Type C Receptacle Horizontal THR / SMT | – | – | – | – | – | – | – | – | – | – | – | – | – | – | USB 3.1 | Type C | 1.6 | – | 20 | – | – | – | – | – | 5 | – | – | – | – | – | – | – | THR | 24 | – | 1.9 | Receptacle | Horizontal | Tape and Reel | |
 | 61300211121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm THT Pin Header | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 250 | – | – | – | – | – | 3 | – | – | – | – | – | 5.08 | – | THT | 2 | Single | – | Pin Header | Straight | Bag | |
 | 65100516121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-COM Mini USB 2.0 Type B SMT Horizontal 5 Contacts | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Mini USB | Type B | – | – | 30 | – | – | – | – | – | 1 | – | – | – | – | – | – | – | SMT | 5 | – | – | Receptacle | Horizontal | Tape and Reel & Mylar | |
 | 74438357047 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-MAPI SMT Power Inductor | – | – | – | – | – | – | – | 5.1 | 8.2 | 39.9 | 24 | 80 | – | – | – | – | – | – | – | 3.1 | – | – | – | – | 3.9 | 0.0047 | 44 | – | – | – | 4.3 | 4.3 | SMT | 2 | – | – | – | – | – | ||
 | 613016243121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm Angled Dual Socket Header | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 250 | – | – | – | – | – | 3 | – | – | – | – | – | 20.82 | – | THT | 16 | Dual | – | Socket Header | Angled | Tray | |
| 613020243121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm Angled Dual Socket Header | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 250 | – | – | – | – | – | 3 | – | – | – | – | – | 25.9 | – | THT | 20 | Dual | – | Socket Header | Angled | Tray |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | IRP,40K (A) | ISAT,30% (A) | RDC typ. (mΩ) | fres (MHz) | VOP (V) | SW (mm) | Ti | Application | Interface Type | PCB Thickness (mm) | IR (A) | Working Voltage (V (AC)) | H (mm) | Operation Force (Value) (g) | Electrical Life (Cycles) | Actuator Color | Vaporphase process | IR (A) | L (mH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | Mount | Pins (Value) (pcs) | Rows | G (mm) | Gender | Type | Packaging | Samples |
|---|