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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 (1548 KB)

Reference design overview and verified performance test data

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

Detailed overview of design layout for component placement

download Bill of materials (BOM) — TIDA-050061
TIDMB93.PDF (163 KB)

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

download CAD/CAE symbol — TIDA-050061
TIDMB96.ZIP (4751 KB)

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

download Gerber file — TIDA-050061
TIDCGC8.ZIP (5944 KB)

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

download PCB layout — TIDA-050061
TIDMB95.PDF (2176 KB)

PCB layer plot file used for generating PCB design layout

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

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Linear & low-dropout (LDO) regulators

TPS7A57 — 5-A, low-input-voltage, low-noise, high-accuracy low-dropout (LDO) voltage regulator

Data sheet: PDF | HTML

Start development

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.

A (...)

Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-050061 — Scalable, high-current, low-noise parallel low-dropout (LDO) reference design
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TPS7A57EVM-081 — TPS7A57 evaluation module for 5-A low-noise high-accuracy low-dropout (LDO) voltage regulator

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Version: null
Release date:
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Hardware development
Reference design
TIDA-050061 — Scalable, high-current, low-noise parallel low-dropout (LDO) reference design
TI’s Standard Terms and Conditions for Evaluation Items apply.

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
TPS7A33 — 1-A, high-PSRR, negative, adjustable low-dropout voltage regulator with enable TPS7A4501-SP — Radiation-hardened, QMLV, 1.5-V to 20-V input 1.5-A low-dropout (LDO) 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 TPS7A52 — 2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A52-Q1 — Automotive 2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A53 — 3-A, low-VIN (1.1 V) low-noise high-accuracy ultra-low-dropout (LDO) voltage regulator TPS7A53-Q1 — Automotive, 3-A, low-VIN (1.1 V) low-noise high-accuracy ultra-low-dropout (LDO) voltage regulator TPS7A53A-Q1 — Automotive, 3-A, low-VIN 5.6-µVRMS low-noise high-accuracy ultra-low dropout voltage regulator TPS7A53B — 3-A, 1.1-V, low-VIN, low-noise high-accuracy ultra-low-dropout voltage regulator with 0.5-V low VREF TPS7A54 — 4-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A54-Q1 — Automotive 4-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A57 — 5-A, low-input-voltage, low-noise, high-accuracy low-dropout (LDO) voltage regulator TPS7A8300 — 2-A, low-VIN, low-2-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good wi TPS7A83A — 2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout voltage regulator with power good TPS7A84 — 3-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good with high-accuracy TPS7A84A — 3-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout voltage regulator with power good TPS7A85 — 4-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good with high-accuracy TPS7A85A — 4-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout voltage regulator with power good TPS7A90 — 500-mA, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy TPS7A91 — 1-A, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy TPS7A92 — 2-A, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy TPS7A94 — 1-A, ultra-low noise, ultra-high PSRR, RF voltage regulator TPS7A96 — 2-A, ultra-low noise ultra-high PSRR RF voltage regulator TPS7B7702-Q1 — Automotive 300-mA, off-battery (40-V), dual-channel adjustable antenna low-dropout voltage regulator TPS7H1111-SEP — Radiation-tolerant, 1.5A, ultra-low-noise ultra-high-PSRR RF LDO regulator TPS7H1111-SP — Radiation-hardened, QMLV and QMLP, 1.5A ultra-low-noise high-PSRR low-dropout (LDO) regulator
Hardware development
Reference design
TIDA-050061 — Scalable, high-current, low-noise parallel low-dropout (LDO) reference design
Evaluation board
TPS7A57EVM-081 — TPS7A57 evaluation module for 5-A low-noise high-accuracy low-dropout (LDO) voltage regulator
Download options

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

close
Latest version
Version: 2.0.3
Release date: Nov 15, 2024
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View all versions

download

PARALLEL-LDO-CALC.xlsx  — 113 K

Parallel LDO Calculator using ballast resistors

SHA-256 checksum
Products
Linear & low-dropout (LDO) regulators
TPS7A33 — 1-A, high-PSRR, negative, adjustable low-dropout voltage regulator with enable TPS7A4501-SP — Radiation-hardened, QMLV, 1.5-V to 20-V input 1.5-A low-dropout (LDO) 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 TPS7A52 — 2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A52-Q1 — Automotive 2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A53 — 3-A, low-VIN (1.1 V) low-noise high-accuracy ultra-low-dropout (LDO) voltage regulator TPS7A53-Q1 — Automotive, 3-A, low-VIN (1.1 V) low-noise high-accuracy ultra-low-dropout (LDO) voltage regulator TPS7A53A-Q1 — Automotive, 3-A, low-VIN 5.6-µVRMS low-noise high-accuracy ultra-low dropout voltage regulator TPS7A53B — 3-A, 1.1-V, low-VIN, low-noise high-accuracy ultra-low-dropout voltage regulator with 0.5-V low VREF TPS7A54 — 4-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A54-Q1 — Automotive 4-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator TPS7A57 — 5-A, low-input-voltage, low-noise, high-accuracy low-dropout (LDO) voltage regulator TPS7A8300 — 2-A, low-VIN, low-2-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good wi TPS7A83A — 2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout voltage regulator with power good TPS7A84 — 3-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good with high-accuracy TPS7A84A — 3-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout voltage regulator with power good TPS7A85 — 4-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good with high-accuracy TPS7A85A — 4-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout voltage regulator with power good TPS7A90 — 500-mA, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy TPS7A91 — 1-A, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy TPS7A92 — 2-A, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy TPS7A94 — 1-A, ultra-low noise, ultra-high PSRR, RF voltage regulator TPS7A96 — 2-A, ultra-low noise ultra-high PSRR RF voltage regulator TPS7B7702-Q1 — Automotive 300-mA, off-battery (40-V), dual-channel adjustable antenna low-dropout voltage regulator TPS7H1111-SEP — Radiation-tolerant, 1.5A, ultra-low-noise ultra-high-PSRR RF LDO regulator TPS7H1111-SP — Radiation-hardened, QMLV and QMLP, 1.5A ultra-low-noise high-PSRR low-dropout (LDO) regulator
Hardware development
Reference design
TIDA-050061 — Scalable, high-current, low-noise parallel low-dropout (LDO) reference design
Evaluation board
TPS7A57EVM-081 — TPS7A57 evaluation module for 5-A low-noise high-accuracy low-dropout (LDO) voltage regulator

Release Information

Initial Release

What's new

  • Added the TPS7A90, TPS7A91 and TPS7A92 to the calculator.

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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