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reference designNCP81231 | Demoboard STR-USBC-4PORT-200W-EVK

Onsemi NCP81231 | Demoboard STR-USBC-4PORT-200W-EVK

NCP81231: Buck Controller, USB Power Delivery and Type-C Applications

Overview

TopologyBuck Converter
Switching frequency150-1200 kHz
IC revision3

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

Parts approved by Onsemi

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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
To
Application
Interface Type
Type
Variant
Gender
Pins
PCB Thickness(mm)
Working Voltage(V (AC))
Packaging
G(mm)
Operating Temperature
H(mm)
Operation Force(g)
Electrical Life(Cycles)
Actuator Color
Washable
Vaporphase process
IR(A)
L(mH)
RDC max.(mΩ)
VR(V (AC))
VT(V (AC))
Material
L(mm)
W(mm)
Mount
SamplesAvailability & Sample
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155124BS73200
SPECWL-SMSW SMT Mono-color Side View Waterclear, 470 nm, Blue
Simu­lation
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMSW SMT Mono-color Side View Waterclear
Dominant Wavelength [typ.]470 nm
Emitting ColorBlue 
Peak Wavelength [typ.]468 nm
Luminous Intensity [typ.]150 mcd
Forward Voltage [typ.]3.4 V
Chip TechnologyInGaN 
Viewing Angle Phi 0° [typ.]120 °
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Height1 mm
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Length3.2 mm
Width1.5 mm
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155124GS73200
SPECWL-SMSW SMT Mono-color Side View Waterclear, 525 nm, Green
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMSW SMT Mono-color Side View Waterclear
Dominant Wavelength [typ.]525 nm
Emitting ColorGreen 
Peak Wavelength [typ.]520 nm
Luminous Intensity [typ.]600 mcd
Forward Voltage [typ.]3.3 V
Chip TechnologyInGaN 
Viewing Angle Phi 0° [typ.]120 °
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Height1 mm
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Length3.2 mm
Width1.5 mm
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150060YS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 590 nm, Yellow
Simu­lation
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Downloads27 files

RAY files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear
Dominant Wavelength [typ.]590 nm
Emitting ColorYellow 
Peak Wavelength [typ.]595 nm
Luminous Intensity [typ.]120 mcd
Forward Voltage [typ.]2 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]140 °
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Operating Temperature -40 °C up to +85 °C
Height0.7 mm
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Length1.6 mm
Width0.8 mm
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150060RS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 625 nm, Red
Simu­lation
Availability
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Downloads27 files

RAY files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear
Dominant Wavelength [typ.]625 nm
Emitting ColorRed 
Peak Wavelength [typ.]630 nm
Luminous Intensity [typ.]250 mcd
Forward Voltage [typ.]2 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]140 °
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Operating Temperature -40 °C up to +85 °C
Height0.7 mm
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Length1.6 mm
Width0.8 mm
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744823422
SPECWE-CMB Common Mode Power Line Choke, –, –
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Downloads11 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-CMB Common Mode Power Line Choke
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Pins4 
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Pin length3 mm
Operating Temperature -40 °C up to +125 °C
Height25.5 mm
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Rated Current4 A
Inductance2.2 mH
DC Resistance30 mΩ
Rated Voltage250 V (AC)
Insulation Test Voltage1500 V (AC)
MaterialMnZn 
Length23.5 mm
Width13.8 mm
MountTHT 
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61301621021
SPECWR-PHD Pin Header - Dual, –, –

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

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Downloads7 files

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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Dual
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TypeAngled 
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GenderPin Header 
Pins16 
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Working Voltage250 V (AC)
PackagingBag 
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Operating Temperature -40 °C up to +105 °C
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Rated Current3 A
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Length20.32 mm
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971100365
SPECWA-SPAIE Plastic Spacer Stud, metric, internal/ external, –, –
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Downloads3 files

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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWA-SPAIE Plastic Spacer Stud, metric, internal/ external
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SW6 mm
Inner ThreadM3 
Outer ThreadM3 
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Operating Temperature -30 °C up to +110 °C
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MaterialPolyamide 
Length10 mm
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434153017835
SPECWS-TASV J-Bend SMT Tact Switch 3.5x2.9 mm, –, –
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Downloads6 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWS-TASV J-Bend SMT Tact Switch 3.5x2.9 mm
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PackagingTape and Reel 
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Operating Temperature -40 °C up to +85 °C
Height1.7 mm
Operation Force350 g
Electrical Life200000 Cycles
Actuator ColorBlue 
WashableNo 
Vaporphase processnot specified 
Rated Current0.05 A
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Rated Voltage12 V (AC)
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970300365
SPECWA-SPAII Plastic Spacer Stud, metric, internal/ internal, –, –
Simu­lation–
Availability
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Downloads3 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWA-SPAII Plastic Spacer Stud, metric, internal/ internal
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SW6 mm
Inner ThreadM3 
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MaterialPolyamide 
Length30 mm
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632723300011
SPECWR-USB Type C Connectors, –, –
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-USB Type C Connectors
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ApplicationUSB 3.1 
Interface TypeType C 
TypeHorizontal 
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GenderReceptacle 
Pins24 
PCB Thickness1.6 mm
Working Voltage48 V (AC)
PackagingTape and Reel 
Pin length1.9 mm
Operating Temperature -40 °C up to +105 °C
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Rated Current5 A
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MountTHR 
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61300211121
SPECWR-PHD Pin Header - Single, –, –
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
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GenderPin Header 
Pins2 
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Working Voltage250 V (AC)
PackagingBag 
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Operating Temperature -40 °C up to +105 °C
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Rated Current3 A
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Length5.08 mm
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65100516121
SPECWR-USB Mini/Micro Connectors, –, –
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-USB Mini/Micro Connectors
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ApplicationMini USB 2.0 
Interface TypeType B 
TypeHorizontal 
Variantwith Pads & Pegs 
GenderReceptacle 
Pins5 
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Working Voltage30 V (AC)
PackagingTape and Reel & Mylar 
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Operating Temperature -40 °C up to +105 °C
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Rated Current1 A
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74438357047
SPECWE-MAPI SMT Power Inductor, –, –
Simu­lation
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Downloads10 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
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Performance Rated Current5.1 A
Saturation Current @ 30%8.2 A
DC Resistance39.9 mΩ
Self Resonant Frequency24 MHz
Operating Voltage80 V
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Pins2 
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Operating Temperature -40 °C up to +125 °C
Height3.1 mm
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Rated Current3.9 A
Inductance0.0047 mH
DC Resistance44 mΩ
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Length4.3 mm
Width4.3 mm
MountSMT 
–Check availability
613016243121
SPECWR-PHD Socket Header - Dual, –, –
Simu­lation–
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Socket Header - Dual
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TypeAngled 
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GenderSocket Header 
Pins16 
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Working Voltage250 V (AC)
PackagingTray 
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Operating Temperature -40 °C up to +105 °C
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Rated Current3 A
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Length20.82 mm
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MountTHT 
–Check availability
613020243121
SPECWR-PHD Socket Header - Dual, –, –
Simu­lation–
Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Socket Header - Dual
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TypeAngled 
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GenderSocket Header 
Pins20 
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Working Voltage250 V (AC)
PackagingTray 
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Operating Temperature -40 °C up to +105 °C
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Rated Current3 A
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Length25.9 mm
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MountTHT 
–Check availability