PWM output voltage scaling reference design for enterprise systems


Design files


This reference design shows a buck converter with adjustable output voltage using the TLV62569. The voltage can be adjusted with a PWM signal scaling an output voltage from 2.5 V through 4.3 V. The output voltage adjustment is achieved with a PWM signal in this reference design at a frequency of 20 kHz and a maximum clocking frequency of 10 MHz.

  • Small form factor
  • PWM output voltage adjustment
  • Efficiency > 90%
  • Switching frequency of 1.5 MHz
Output voltage options PMP30666.1 PMP30666.2
Vin (Min) (V) 5 5
Vin (Max) (V) 5 5
Vout (Nom) (V) 2.5 4.3
Iout (Max) (A) 1.5 1.5
Output Power (W) 3.75 6.45
Isolated/Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC
Topology Buck- Synchronous Buck- Synchronous
Enterprise systems
?? View video with transcript Video

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.

TIDT111.PDF (3258 K)

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


Detailed schematic diagram for design layout and components


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


Detailed overview of design layout for component placement


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

TIDCFH2.ZIP (1465 K)

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


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

TLV625692.5V-5.5V input, 2-A high efficiency step-down buck converter in SOT23 and SOT563 package

Data sheet: PDF | HTML
Fixed-direction voltage translators

SN74LV1T04Single Power Supply INVERTER Gate logic level shifter

Data sheet: PDF | HTML
Shunt voltage references

TL431LIAdjustable precision shunt regulator with optimized reference current (pin layout: KRA)

Data sheet: PDF | HTML

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Test report PWM Output Voltage Scaling Reference Design for Enterprise Systems May 23, 2019

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​