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LM25183-Q1

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SNVSBJ4 – APRIL 2020

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Copyright © 2020, Texas Instruments Incorporated

8.2.1.1 Design Requirements

The required input, output, and performance parameters for this application example are shown in Table 1.

Table 1. Design Parameters

DESIGN PARAMETER

VALUE

Input voltage range

6 V to 36 V

Input UVLO thresholds

5.5 V on, 4 V off

Output voltage

12 V

0.6 A

Output voltage regulation

±1.5%

Output voltage ripple

< 120 mV pk-pk

The target full-load efficiency is 89% based on a nominal input voltage of 24 V and an isolated output voltage of

required components are listed in Table 2. Transformers for other single-output designs are listed in Table 3.

Table 2. List of Components for Design 1

REF DES

QTY

SPECIFICATION

VENDOR

PART NUMBER

1

10 µF, 50 V, X7R, 1210, ceramic

TDK

C3225X7R1H106M250AC

3

22 µF, 25 V, X7R, 1210, ceramic

TDK

C3225X7R1E226M250AB

Taiyo Yuden

TMK325B7226MM-PR

22 µF, 25 V, X7R, 1210, ceramic

Würth Electronik

885012209074

0

100 µF, 16 V, ±20%, electrolytic

Kemet

T598D107M016ATE050

1

47 nF, 16 V, X7R, 0402

Std

Std

1

Zener, 20 V, 3 W, SMA

3SMAJ5932B

Micro Commercial

2

Schottky diode, 60 V, 3 A, SOD-123FL

FSV360FP

OnSemi

1

Zener, 13 V, 2%, SOD-523

BZX585-B13

Nexperia

1

121 kΩ, 1%, 0402

Std

Std

1

12.1 kΩ, 1%, 0402

Std

Std

1

261 kΩ, 1%, 0402

Std

Std

1

261 kΩ, 1%, 0603

Std

Std

1

97.6 kΩ, 1%, 0402

Std

Std

1

12.5 µH, 3 A, 1 : 1, 13 mm × 11 mm × 10 mm

Coilcraft

ZB1053-AE

1

LM25183 -Q1 PSR flyback converter, AEC-Q100

Texas Instruments

LM25183QNGURQ1

Table 3. Magnetic Components for Single-Output Designs

OUTPUT VOLTAGE RANGE

TURNS RATIO

DIMENSIONS

VENDOR

PART NUMBER

Up to 3.6 V

4 : 1

12.5 µH, 3 A

13 × 11 × 10 mm

Coilcraft

ZB1050-AE

3.6 V to 5 V

3 : 1

14 µH, 3 A

ZB1051-AE

5 V to 8 V

2 : 1

14 µH, 3 A

ZB1052-AE

8 V to 15 V

1 : 1

12.5 µH, 3 A

ZB1053-AE

15 V to 28 V

1 : 2

12.5 µH, 3 A

ZB1054-AE

28 V to 50 V

1 : 3

14 µH, 3 A

ZB1055-AE