IC manufacturers Onsemi

IC manufacturers (103)

Onsemi NCP1937 | Demoboard NCP1937BADAPGEVB

90 W Adapter PFC+QR 10 MW Evaluation Board

Overview

TopologyPower Factor Correction
Input voltage90-265 V

Description

This combination IC integrates power factor correction (PFC) and quasi-resonant flyback functionality necessary to implement a compact and highly efficient Switched Mode Power Supply for an adapter application.The PFC stage exhibits near-unity power factor while operating in a Critical Conduction Mode (CrM) with a maximum frequency clamp. The circuit incorporates all the features necessary for building a robust and compact PFC stage while minimizing the number of external components.The quasi-resonant current-mode flyback stage features a proprietary valley-lockout circuitry, ensuring stable valley switching. This system works down to the 4th valley and toggles to a frequency foldback mode with a minimum frequency clamp beyond the 4th valley to eliminate audible noise. Skip mode operation allows excellent efficiency in light load conditions while consuming very low standby power consumption.

Features

Remark: Test-Result & BOM PDF are added

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesIR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
Mount Samples
744822120SPEC

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.

11 files Active i| Production is active. Expected lifetime: >10 years.WE-CMB Common Mode Power Line Choke 0.5 20 540 250 1500 MnZn 17.5 13 22 THT
744821240SPEC

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.

10 files Active i| Production is active. Expected lifetime: >10 years.WE-CMB Common Mode Power Line Choke 1.5 4 140 250 1500 MnZn 15.8 7.8 18 THT
7447060SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WE-FI Leaded Toroidal Line Choke 2.5 0.3 150 21 11.2 THT
750313054SPEC
4 files Active i| Production is active. Expected lifetime: >10 years. Transformer 0.5 4000 34 37.34 24.13 THT
750313048SPEC
5 files Active i| Production is active. Expected lifetime: >10 years. Inductor 0.39 1500 26.16 26.16 19.05 THT
Order Code Data­sheet Simu­lation
744822120SPEC

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.

744821240SPEC

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.

7447060SPEC
750313054SPEC
750313048SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesIR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
Mount Samples