Evaluation board for the PM6675S high efficiency step-down controller with embedded 2 A LDO regulator

The STEVAL-ISA052V1 demonstration board is based on the PM6675S device which consists of a single high efficiency step-down controller and an independent low drop-out (LDO) linear regulator.

The constant on-time (COT) architecture assures fast transient response supporting both electrolytic and ceramic output capacitors. An embedded integrator control loop compensates the DC voltage error due to the output ripple.

Selectable low-consumption mode allows the highest efficiency over a wide range of load conditions. The low-noise mode sets the minimum switching frequency to 33 kHz for audio-sensitive applications. The LDO linear regulator can sink and source up to 2 Apk. Two fixed current limits (±1 A and ±2 A) can be chosen.

An active soft-end is independently performed on both the switching and the linear regulator outputs when disabled.

Key Features

  • 4.5 V to 28 V input voltage range
  • 0.6 V, ±1 % voltage reference
  • 1.5 V fixed output voltage
  • 0.6 V to 3.3 V adjustable output voltage
  • 1.237 V ±1 % reference voltage available
  • Very fast load transient response constant on-time loop control
  • No-RSENSE current sensing using low-side MOSFETs’ RDS(on)
  • Negative current limit
  • Latched OVP, UVP and thermal shutdown
  • Fixed 3 ms soft-start
  • Selectable pulse-skipping at light load
  • Selectable no-audible (33 kHz) pulse-skip mode
  • All ceramic output capacitors application supported
  • Output voltage ripple compensation
  • Output soft-end
  • RoHS compliant

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Design

Technical Documentation

Product Specifications
Description Version Size
DB1175 DB1175: High efficiency step-down controller with embedded 2 A LDO regulator demonstration board based on the PM6675S 1.1 117 KB

Hardware Resources

Board Manufacturing Specifications
Description Version Size
Gerber files for STEVAL-ISA052V1 board 1.0 1 MB
Bill of Materials
Description Version Size
BOM for STEVAL-ISA052V1 board 1.0 57 KB
Schematic Packs
Description Version Size
Board schematics for STEVAL-ISA052V1 board 1.0 31 KB

Legal

License Agreement
Description Version Size
Evaluation products license agreement 1.0 125 KB
Support & Community

Sample & Buy

Part Number Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STEVAL-ISA052V1 PM6675S Active 90.65 1 NEC EAR99 ITALY MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEVAL-ISA052V1 ActiveCARDIndustrialEcopack2
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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