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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 | L (mm) | To | Ti | C | VR (V (DC)) | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | Pitch (mm) | W (mm) | ISAT (A) | fres (MHz) | Version | SW (mm) | Endurance (h) | IRIPPLE (mA) | ILeak (µA) | DF (%) | Ø D (mm) | Operation Force (Value) (g) | Schematic | Packaging | VRMS (V) | VDC (V) | VBR (V) | IPeak (A) | Wmax (J) | PDiss (W) | Application | VDE Approval | L (µH) | IR (A) | RDC max. (mΩ) | Pins (Value) (pcs) | Rows | H (mm) | G (mm) | Gender | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 61300211121 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm THT Pin Header | 5.08 | – | – | – | – | – | – | – | 1000 MΩ | – | 2.54 | – | – | – | – | – | – | – | – | – | – | – | – | Bag | – | – | – | – | – | – | – | – | – | 3 | – | 2 | Single | – | – | Pin Header | Straight | |
 | 971100365 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WA-SPAIE Plastic Spacer Stud, metric, internal/ external | 10 | M3 | M3 | – | – | – | – | – | – | – | – | – | – | – | – | 6 | – | – | – | – | – | – | – | Bag | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
 | 7447231101 | SPEC | 13 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TI Radial Leaded Wire Wound Inductor | 11 | – | – | – | – | – | – | – | – | – | – | 11 | 3.1 | 3.6 | Heat Shrinking Tube | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 100 | 2.6 | 90 | – | – | 19 | – | – | – | ||
 | 860240473003 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-AT1H Aluminum Electrolytic Capacitors | 11 | – | – | 47 µF | 25 | – | – | – | – | -40 °C up to +105 °C | 2.5 | – | – | – | – | – | 5000 | 160 | 11.75 | 14 | 6.3 | – | – | Ammopack | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 860240574004 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-AT1H Aluminum Electrolytic Capacitors | 11.5 | – | – | 47 µF | 35 | – | – | – | – | -40 °C up to +105 °C | 3.5 | – | – | – | – | – | 8000 | 240 | 16.45 | 12 | 8 | – | – | Ammopack | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
 | 820412711 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WE-VD Disk Varistor | 12.5 | – | – | – | – | – | – | – | – | -40 °C up to +85 °C | – | 4.4 | – | – | THT | – | – | – | – | – | 12.5 | – | – | – | 275 | 350 | 430 | 3500 | 80 | 0.4 | 230 VAC | Yes | – | – | – | – | – | 16 | – | – | – | ||
 | 890324023023 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTX2 Film Capacitors | 13 | – | – | 100 nF | 275 | X2 | 300 | 0.1 | 30 GΩ | -40 °C up to +105 °C | 10 | 7 | – | – | – | – | – | – | – | – | – | – | – | Bulk | – | – | – | – | – | – | Across the mains | – | – | – | – | – | – | 13 | 18 | – | – | ||
| 890324024003 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTX2 Film Capacitors | 15 | – | – | 330 nF | 275 | X2 | 260 | 0.1 | 30 GΩ | -40 °C up to +105 °C | 12.5 | 8.5 | – | – | – | – | – | – | – | – | – | – | – | Bulk | – | – | – | – | – | – | Across the mains | – | – | – | – | – | – | 14 | 18 | – | – | ||
| 860240475007 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-AT1H Aluminum Electrolytic Capacitors | 16 | – | – | 220 µF | 25 | – | – | – | – | -40 °C up to +105 °C | 5 | – | – | – | – | – | 10000 | 580 | 55 | 14 | 10 | – | – | Ammopack | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
 | 860080578019 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-ATLI Aluminum Electrolytic Capacitors | 20 | – | – | 680 µF | 35 | – | – | – | – | -55 °C up to +105 °C | 5 | – | – | – | – | – | 5000 | 2260 | 238 | 9 | 13 | – | – | Ammopack | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
 | 61302021021 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD 2.54 mm THT Angled Dual Pin Header | 25.4 | – | – | – | – | – | – | – | 1000 MΩ | – | 2.54 | – | – | – | – | – | – | – | – | – | – | – | – | Bag | – | – | – | – | – | – | – | – | – | 3 | – | 20 | Dual | – | – | Pin Header | Angled | |
 | 7447055 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WE-FI Leaded Toroidal Line Choke | 26 | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | 13 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 150 | 5.4 | 42 | – | – | – | 15 | – | – | |
 | 970300365 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WA-SPAII Plastic Spacer Stud, metric, internal/ internal | 30 | – | M3 | – | – | – | – | – | – | – | – | – | – | – | – | 6 | – | – | – | – | – | – | – | Bag | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
 | 450301014042 | SPEC | – | 5 files | Active i| Production is active. Expected lifetime: >10 years. | WS-SLTV THT Mini Slide Switch, Opposite Side Connection 10x2.5 mm | – | – | – | – | 12 | – | – | – | 10000 MΩ | – | – | – | – | – | – | – | – | – | – | – | – | 800 | SPDT | Bulk | – | – | – | – | – | – | – | – | – | 0.5 | – | – | – | – | – | – | – | |
 | 709940300 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WA-SNTE Snap-In Stop Spacer for Printed Circuit Boards | – | – | M3 | – | – | – | – | – | – | -30 °C up to +85 °C | – | – | – | – | – | 5.5 | – | – | – | – | – | – | – | Bag | – | – | – | – | – | – | – | – | – | – | – | – | – | 2.4 | – | – | – | |
| 750317576 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | Inductor | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 750316907 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 61300211121 | SPEC | – |
| 971100365 | SPEC | – |
| 7447231101 | SPEC | |
| 860240473003 | SPEC | |
| 860240574004 | SPEC | |
| 820412711 | SPEC | |
| 890324023023 | SPEC | |
| 890324024003 | SPEC | |
| 860240475007 | SPEC | |
| 860080578019 | SPEC | |
| 61302021021 | SPEC | – |
| 7447055 | SPEC | – |
| 970300365 | SPEC | – |
| 450301014042 | SPEC | – |
| 709940300 | SPEC | – |
| 750317576 | SPEC | – | |
| 750316907 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (mm) | To | Ti | C | VR (V (DC)) | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | Pitch (mm) | W (mm) | ISAT (A) | fres (MHz) | Version | SW (mm) | Endurance (h) | IRIPPLE (mA) | ILeak (µA) | DF (%) | Ø D (mm) | Operation Force (Value) (g) | Schematic | Packaging | VRMS (V) | VDC (V) | VBR (V) | IPeak (A) | Wmax (J) | PDiss (W) | Application | VDE Approval | L (µH) | IR (A) | RDC max. (mΩ) | Pins (Value) (pcs) | Rows | H (mm) | G (mm) | Gender | Type | Samples |
|---|