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TIDA-010089

Two-quadrant, 15V, 8A, programmable linear DC power supply reference design

TIDA-010089

Design files

Overview

This reference design demonstrates a low-noise, efficient, bidirectional power supply that achieves less than ±0.02% full-scale (FS) current and voltage control accuracy. The design utilizes an analog feedback loop for precise current control and implements a voltage tracking circuit to minimize the power dissipation in linear stage for the source mode. This implementation enables 120W output power and can sink up to 25W with external cooling.

Features
  • Low-noise linear output stage, 3mVpp output noise in 20MHz bandwidth
  • Precise current and voltage control with accuracy better than ±0.02% full scale
  • Maximum power during source operation: 120W
Output voltage options TIDA-010089.1
Vin (Min) (V) 24
Vin (Max) (V) 48
Vout (Nom) (V) 15
Iout (Max) (A) 8
Output Power (W) 120
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Buck- Synchronous^Linear Regulator

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.

PDF | HTML
TIDUF39.PDF (1253 K)

Reference design overview and verified performance test data

TIDME22.PDF (2212 K)

Detailed schematic diagram for design layout and components

TIDME23.PDF (348 K)

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

TIDME24.PDF (651 K)

Detailed overview of design layout for component placement

TIDME26.ZIP (5145 K)

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

TIDCGX1.ZIP (1325 K)

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

TIDME25.ZIP (5145 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)

LM5146100-V synchronous buck DC/DC controller with wide duty-cycle range

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

LM26641.8-V to 5.5-VIN switched capacitor voltage inverter

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

LMR38010SIMPLE SWITCHER® 80-V, 1.0-A, 2.2-MHz step-down converter with 40-µA IQ

Data sheet: PDF | HTML
Analog switches & muxes

TMUX4053+/-12-V, 2:1, 3-channel multiplexer with 1.8-V logic compatible logic

Data sheet: PDF | HTML
Comparators

LM393Dual differential comparator, commercial grade

Data sheet: PDF | HTML
General-purpose op amps

LM358Dual, 30-V, 700-kHz operational amplifier

Data sheet: PDF | HTML
Instrumentation amplifiers

INA818Low power (350-µA), precision instrumentation amp with ±60-V overvoltage protection (gain pins 1, 8)

Data sheet: PDF | HTML
Precision DACs (≤10 MSPS)

DAC70502Dual-channel, 1-LSB INL, 14-bit, SPI voltage-output digital-to-analog converter (DAC)

Data sheet: PDF | HTML
Precision op amps (Vos<1mV)

OPA192High-Voltage, Rail-to-Rail Input/Output, 5µV, 0.2µV/˚C, Precision Operational Amplifier

Data sheet: PDF | HTML
Series voltage references

REF540.8ppm/°C drift (max), 0.11ppmp-p 1/f noise, 380μA current precision voltage reference

Data sheet: PDF | HTML
Solid-state relays

TPSI3050Isolated switch driver with integrated 10-V gate supply

Data sheet: PDF | HTML
TVS diodes

TVS180118-V bidirectional flat-clamp surge protection device

Data sheet: PDF | HTML
Temperature switches

TMP708Resistor-programmable temperature switch with 10°C and 30°C hysteresis

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Design guide Two-Quadrant, 15V, 8A, Programmable Linear DC Power Supply Reference Design PDF | HTML Mar. 19, 2025

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