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TIDA-01566

Light Load Efficient, Low Noise Power Supply Reference Design for Wearables and IoT

Design files

TIDA-01566

Design files

Overview

This reference design demonstrates an ultra-small power supply solution (8.5 mm2 total) for an efficient and low-noise rail in portable personal electronic devices, such as wearables, smart watches, smartphones, headsets, headphones, earbuds, and camera modules. A low dropout (LDO) linear regulator follows a DC/DC converter to deliver the same low-noise performance of an LDO with the high efficiency of a DC/DC converter. The overall no load input current (also known as switching IQ) of only 8 µA maintains higher efficiency than an LDO-only based design, while the near 100-µV output noise cleanly powers the sensitive load better than a DC/DC-only design. This design guide documents and compares the critical performance characteristics, such as efficiency, IQ, ripple, and so forth, of all three design types: LDO only, DC/DC only, and LDO after DC/DC.

Features
  • Solution size of 8.5 mm2 and height below 0.65 mm
  • No load input current (switching IQ) of 8 µA
  • Near 100-µV output noise (10 Hz to 100 kHz)
  • Simple output voltage adjustment down to 0.5 VOUT
  • 2.6-V to 5.5-V VIN range for 1.2 VOUT
  • 300-mA LDO output current (1 A at DC/DC output)
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Design files & products

Design files

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

download Design guide — TIDA-01566
TIDUE57.PDF (2864 KB)

Reference design overview and verified performance test data

download Assembly drawing — TIDA-01566
TIDRWP1.PDF (96 KB)

Detailed overview of design layout for component placement

download Bill of materials (BOM) — TIDA-01566
TIDRWP2.PDF (64 KB)

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

download Gerber file — TIDA-01566
TIDCES2.ZIP (368 KB)

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

download PCB layout — TIDA-01566
TIDRWP0.PDF (356 KB)

PCB layer plot file used for generating PCB design layout

download Schematic — TIDA-01566
TIDRWO9.PDF (133 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

DC/DC converters

TPS62806 — 1.75-V to 5.5-V input, 600-mA ultra-low IQ step-down converter in 0.7-mm x 1.05-mm WCSP

Data sheet: PDF | HTML
DC/DC converters

TPS62807 — 1.75-V to 5.5-V input, 600-mA ultra-low IQ step-down converter in 0.7-mm x 1.05-mm WCSP

Data sheet: PDF | HTML
DC/DC converters

TPS62808 — 1.75-V to 5.5-V input, 600-mA ultra-low IQ step-down converter in 0.7-mm x 1.05-mm WCSP

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS7A10 — 300-mA, low-VIN (0.75-V), ultra-low-IQ, low-dropout voltage regulator with enable

Data sheet: PDF | HTML
DC/DC converters

TPS62800 — 1.75-V to 5.5-V input, 1-A ultra-low IQ step-down converter in 0.7-mm x 1.05-mm chip scale package

Data sheet: PDF | HTML
DC/DC converters

TPS62801 — 1.75-V to 5.5-V input, 1-A ultra-low IQ step-down converter in 0.7-mm x 1.05-mm chip scale package

Data sheet: PDF | HTML
DC/DC converters

TPS62802 — 1.75-V to 5.5-V input, 1-A ultra-low IQ step-down converter in 0.7-mm x 1.05-mm chip scale package

Data sheet: PDF | HTML

Start development

Hardware development

Evaluation board

TPS62800EVM-892 — Tiny 0.35-mm Pitch 1-A Step-Down Converters with 2.3-uA Iq Evaluation Module (3 circuits)

This reference design demonstrates an ultra-small power supply solution (8.5 mm2 total) for an efficient and low-noise rail in portable personal electronic devices, such as wearables, smart watches, smartphones, headsets, headphones, earbuds, and camera modules. A low dropout (LDO) linear (...)
EVM user’s guide: PDF
Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-01566 — Light Load Efficient, Low Noise Power Supply Reference Design for Wearables and IoT
In stock
Limit:
Out of stock on TI.com
Not available on TI.com

TPS62800EVM-892 — Tiny 0.35-mm Pitch 1-A Step-Down Converters with 2.3-uA Iq Evaluation Module (3 circuits)

close
Latest version
Version: null
Release date:
open-in-new

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Hardware development
Reference design
TIDA-01566 — Light Load Efficient, Low Noise Power Supply Reference Design for Wearables and IoT
Evaluation board

TPS7A10EVM-004 — TPS7A10 300-mA low-IQ ultra-low-dropout (LDO) linear regulator evaluation module

This reference design demonstrates an ultra-small power supply solution (8.5 mm2 total) for an efficient and low-noise rail in portable personal electronic devices, such as wearables, smart watches, smartphones, headsets, headphones, earbuds, and camera modules. A low dropout (LDO) linear (...)
EVM user’s guide: PDF | HTML
Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-01566 — Light Load Efficient, Low Noise Power Supply Reference Design for Wearables and IoT
In stock
Limit:
Out of stock on TI.com
Not available on TI.com

TPS7A10EVM-004 — TPS7A10 300-mA low-IQ ultra-low-dropout (LDO) linear regulator evaluation module

close
Latest version
Version: null
Release date:
open-in-new

View all versions

Hardware development
Reference design
TIDA-01566 — Light Load Efficient, Low Noise Power Supply Reference Design for Wearables and IoT
TI’s Standard Terms and Conditions for Evaluation Items apply.

Technical documentation

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* Design guide Light Load Efficient Low Noise Power Supply Ref Design for Wearables and IoT Feb 6, 2018

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