PMP21107

Wide input synchronous buck converter reference design with frequency spread spectrum

PMP21107

Design files

Overview

This reference design is a synchronous buck converter for automotive applications utilizing a synchronous buck controller with frequency spread spectrum. The design uses a dual MOSFET in power SO-8 package. Forced pulse width modulation (FPWM) or diode emulation mode (DEMB) is jumper selectable. The features include an enable input and power good flag. The switching frequency is set to 440 kHz. Frequency dithering and input filtering help improve EMI performance. Modified frequency compensation supports all ceramic output capacitors.

Features

All ceramic output capacitors for increased reliability
Peak current-mode control simplifies compensation design
On-board EMI filter eases compliance testing
Frequency dithering improves EMI performance
Dual MOSFET improves switching performance

Output voltage options	PMP21107.1
Vin (Min) (V)	5.5
Vin (Max) (V)	42
Vout (Nom) (V)	3.3
Iout (Max) (A)	5
Output Power (W)	16.5
Isolated/Non-Isolated	Non-Isolated
Input Type	DC
Topology	Buck- Synchronous

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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

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Test report — PMP21107

TIDT075.PDF (3087 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

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Schematic — PMP21107

TIDRYP0.PDF (174 K)

Detailed schematic diagram for design layout and components

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Bill of materials (BOM) — PMP21107

TIDRYP1.PDF (98 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

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Assembly drawing — PMP21107

TIDRYP2.PDF (93 K)

Detailed overview of design layout for component placement

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CAD/CAE symbol — PMP21107

TIDRYP4.ZIP (615 K)

Files used for 3D models or 2D drawings of IC components

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Gerber file — PMP21107

TIDCF84.ZIP (371 K)

Design file that contains information on physical board layer of design PCB

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PCB layout — PMP21107

TIDRYP3.PDF (717 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

AC/DC & DC/DC controllers (external FET)

LM25141-Q1 — Automotive 2.2-MHz, low-IQ synchronous buck controller with frequency spread spectrum

Data sheet: PDF | HTML

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Software

Calculation tool

LM25141DESIGN-CALC — LM25141-Q1 controller quickstart design tool

Welcome to the LM25141-Q1 quickstart calculator design tool. This standalone tool facilitates and assists the power supply engineer with design of a DC/DC buck regulator based on the LM25141-Q1 42-V synchronous buck DC/DC controller with low IQ. As such, the user can expeditiously arrive at an (...)

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Supported products & hardware

Products

AC/DC & DC/DC controllers (external FET)

LM25141 — Low Iq, Wide Input Range Synchronous Buck Controller

LM25141-Q1 — Automotive 2.2-MHz, low-IQ synchronous buck controller with frequency spread spectrum

Hardware development

Evaluation board

LM5141QRGEVM — LM5141QRG Synchronous Buck Converter Evaluation Module

Software

Calculation tool

LM25141DESIGN-CALC — LM25141-Q1 controller quickstart design tool

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LM25141DESIGN-CALC — LM25141-Q1 controller quickstart design tool

Latest version

Version: 01.00.00.0A

Release date: 12 Sep 2023

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LM25141/-Q1 controller quickstart calculator — 1598 K

LM25141 and LM25141-Q1 controller quickstart calculator tool

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Products

AC/DC & DC/DC controllers (external FET)

LM25141 — Low Iq, Wide Input Range Synchronous Buck Controller

LM25141-Q1 — Automotive 2.2-MHz, low-IQ synchronous buck controller with frequency spread spectrum

Hardware development

Evaluation board

LM5141QRGEVM — LM5141QRG Synchronous Buck Converter Evaluation Module

Software

Calculation tool

LM25141DESIGN-CALC — LM25141-Q1 controller quickstart design tool

Technical documentation

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	Type	Title		Date
*	Test report	Wide input synchronous buck converter reference design		Jan. 15, 2019

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