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TIDA-050061

Scalable, high-current, low-noise parallel low-dropout (LDO) reference design

Design files

TIDA-050061

Design files

Overview

The TIDA-050061 parallel low-dropout (LDO) reference design showcases the TPS7A57 low-noise LDO linear regulator in a parallel configuration using ballast resistors, which is capable of sourcing 13 A. A high-performance load-transient circuit is included to assist the user with high-speed load-transient testing. Low inductive current loops also are included to assist with input and output current measurements.

Features
  • Load current: 15 A (max) 
  • Input voltage range: 0.7 V to 6 V
  • Selectable output voltages: 0.5 V to 5 V
  • VBIAS range: 3 V to 11 V
  • Current reference and unity-gain low dropout (LDO)
  • TPS7A57EVM-081 EVM supports this reference design
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Design files & products

Design files

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

download Design guide — TIDA-050061
PDF | HTML
TIDUF09.PDF (1547 K)

Reference design overview and verified performance test data

download Schematic — TIDA-050061
TIDMB92.PDF (497 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — TIDA-050061
TIDMB93.PDF (162 K)

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

download Assembly drawing — TIDA-050061
TIDMB94.PDF (326 K)

Detailed overview of design layout for component placement

download CAD/CAE symbol — TIDA-050061
TIDMB96.ZIP (4750 K)

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

download Gerber file — TIDA-050061
TIDCGC8.ZIP (5943 K)

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

download PCB layout — TIDA-050061
TIDMB95.PDF (2175 K)

PCB layer plot file used for generating PCB design layout

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Hardware

Evaluation board

TPS7A57EVM-081 — TPS7A57 evaluation module for 5-A low-noise high-accuracy low-dropout (LDO) voltage regulator

The TPS7A57EVM-081 evaluation module (EVM) is a platform for developing the TPS7A57, which is a low-noise, low-dropout (LDO) linear regulator. The TIDA-050061 reference design showcases the TPS7A57 in a parallel configuration using ballast resistors, which is capable of sourcing 13 A.

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Software

Calculation tool

PARALLEL-LDO-CALC — Parallel low-dropout (LDO) calculator

The parallel low-dropout (LDO) calculator is a Microsoft® Excel®-based tool that provides worst-case analysis for parallel LDO regulators using ballast resistors. The tool helps the user identify the minimum number of parallel LDO regulators required and optimum ballast resistance for a (...)

Supported products & hardware

Supported products & hardware

Products
Linear & low-dropout (LDO) regulators
TPS7A57 — 5-A, low-input-voltage, low-noise, high-accuracy low-dropout (LDO) voltage regulator TPS7A47 — 1-A, 36-V, low-noise, high-PSRR, low-dropout voltage regulator with enable TPS7A47-Q1 — Automotive 1-A, 36-V, low-noise, high-PSRR, low-dropout voltage regulator with enable TPS7A4701-EP — Enhanced product, 36-V, 1-A, 4-μVRMS, RF LDO voltage regular TPS7A94 — 1-A, ultra-low noise, ultra-high PSRR, RF voltage regulator
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PARALLEL-LDO-CALC — Parallel low-dropout (LDO) calculator

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Version: 1.0
Release date: 05 Dec 2022
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PARALLEL-LDO-CALC.xlsx  — 47 K

Parallel low-dropout (LDO) calculator

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Products
Linear & low-dropout (LDO) regulators
TPS7A57 — 5-A, low-input-voltage, low-noise, high-accuracy low-dropout (LDO) voltage regulator TPS7A47 — 1-A, 36-V, low-noise, high-PSRR, low-dropout voltage regulator with enable TPS7A47-Q1 — Automotive 1-A, 36-V, low-noise, high-PSRR, low-dropout voltage regulator with enable TPS7A4701-EP — Enhanced product, 36-V, 1-A, 4-μVRMS, RF LDO voltage regular TPS7A94 — 1-A, ultra-low noise, ultra-high PSRR, RF voltage regulator

Documentation

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SBVA093

Comprehensive Analysis and Universal Equations for Parallel LDO's Using Ballast Resistors

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SBVA100

Parallel LDO Architecture Design Using Ballast Resistors

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TIDA-050061

Scalable, High-Current, Low-Noise Parallel LDO Reference Design

Release Infomation

Initial Release

Technical documentation

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Design guide Scalable, High-Current, Low-Noise Parallel LDO Reference Design PDF | HTML Dec. 23, 2022

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