Texas Instruments LM25180-Q1, User Manual

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I
OUT1
= 0.2 A
C
IN
2 x
10 F
4.7 F
T
1
V
IN
= 10 V...65 V
1 : 1 : 0.52
R
SET
12.1 k
:
R
FB
154 k :
D
CLAMP
D
F
R
TC
301 k
:
C
SS
47 nF
Copyright © 2018, Texas Instruments Incorporated
R
UV1
R
UV2
68.1 k :
D
OUT1
18 V
30 P H
V
OUT1
= 15 V
2 x
10 F
D
OUT2
8.2 V
SW
FB
VIN
EN/UVLO
TC
GND
SS/BIAS
RSET
LM5180
D
FLY1
C
OUT1
C
OUT2
D
FLY2
I
OUT2
=
±
0.2 A
V
OUT2
=
±
7.7 V
340 k
:
24 V
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Application Circuit Diagram
5 SNVU609B – October 2018 – Revised April 2020
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Copyright © 2018–2020, Texas Instruments Incorporated
LM5180-Q1 Dual-Output EVM User's Guide
3 Application Circuit Diagram
Figure 1 shows the schematic of an LM5180-based flyback converter (EMI filter stage not shown). Soft
start (SS), temperature compensation (TC), and UVLO (EN/UVLO) components are shown that are
configurable as required by the specific application. The transformer turns ratio is 1 : 1: 0.52 and the
primary-referred magnetizing inductance is 30 µH.
Figure 1. LM5180 PSR Flyback Dual-Output Schematic
4 EVM Photo
Figure 2. Dual-Output EVM Photo, 55 mm × 38 mm