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LM25183-Q1 데이터시트(HTML) 16 Page - Texas Instruments

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부품명 LM25183-Q1
상세내용  LM25183-Q1 42-VIN PSR Flyback DC/DC Converter with 65-V, 2.5-A Integrated MOSFET
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제조사  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
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LM25183-Q1 데이터시트(HTML) 16 Page - Texas Instruments

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I
OUT = 0.6 A
SW
FB
VIN
EN/UVLO
TC
GND
RSET
LM25183
C
OUT
C
IN
3 x
22
F
10
F
T
1
V
IN = 6 V...42 V
1 : 1
D
FLY
R
SET
12.1 k:
R
FB
121 k:
D
CLAMP
D
F
R
TC
261 k:
R
UV1
261 k:
R
UV2
97.1 k:
D
OUT
13 V
12.5 PH
V
OUT = 12 V
20 V
SS/BIAS
C
SS
47 nF
16
LM25183-Q1
SNVSBJ4 – APRIL 2020
www.ti.com
Product Folder Links: LM25183-Q1
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Copyright © 2020, Texas Instruments Incorporated
8 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The LM25183-Q1 requires only a few external components to convert from a wide range of supply voltages to
one or more isolated output rails. To expedite and streamline the process of designing of a LM25183-Q1-based
converter, a comprehensive LM25183-Q1 quick-start calculator is available for download to assist the designer
with component selection for a given application. WEBENCH® online software is also available to generate
complete designs, leveraging iterative design procedures and access to comprehensive component databases.
The following sections discuss the design procedure for both single- and dual-output implementations using
specific circuit design examples.
As mentioned previously, the LM25183-Q1 also integrates several optional features to meet system design
requirements, including precision enable, input UVLO, programmable soft start, output voltage thermal
compensation, and external bias supply connection. Each application incorporates these features as needed for
a more comprehensive design.
The application circuits detailed in the Typical Applications show LM25183-Q1 configuration options suitable for
several application use cases. Refer to the LM25184EVM-S12 EVM user's guide for more detail.
8.2 Typical Applications
For step-by-step design procedures, circuit schematics, bill of materials, PCB files, simulation and test results of LM25183-Q1-powered
implementations, refer to the TI Reference Design library.
8.2.1 Design 1: Wide VIN, Low IQ PSR Flyback Converter Rated at 12 V, 0.6 A
The schematic diagram of a 12-V, 0.6-A PSR flyback converter is given in Figure 19.
Figure 19. Schematic for Design 1 With VIN(nom) = 24 V, VOUT = 12 V, IOUT = 0.6 A


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