Key facts
- Brand
- Fairchild
- Model
- FAN2001
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-07-12
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FAIRCHILD FAN2001/FAN2011 DC-DC Converter PCB Grounding Application Note
Ground wiring can often limit system performance by coupling noise from power elements into signal paths. This document addresses these issues, specifically regarding the finite resistance of grounding paths and inductively induced currents that create circulating ground loop currents.
The text details the "star grounding" technique as a solution to minimize DC offsets and noise. It provides specific guidance for designing PCB layouts for the FAN2011 and FAN2001 families, including separating signal grounds from power grounds at the star point and routing feedback signals away from high current paths.
Fairchild FAN2001 specifications
| Output Current | 1A |
|---|---|
| Input Voltage Range | 2.5V to 5.5V |
| Output Voltage Range | 0.8V to Vix |
| Efficiency | 96% |
| Operating Frequency | 1.3MHz |
| Package Type | 6-Lead MLP |
Source: Fairchild FAN2001/FAN2002 1A High-Efficiency Step-Down DC-DC Converter Datasheet
All Fairchild FAN2001 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the purpose of this application note?
The document helps system designers utilize the benefits of the FAN2011 and FAN2001 families of high performance step-down DC-DC regulators to avoid PCB layout related problems and maximize overall system performance.
From: FAIRCHILD FAN2001/FAN2011 DC-DC Converter PCB Grounding Application Note
What technique is recommended for grounding these regulators?
The document presents the basic concept of star grounding and shows ways of implementing it for systems like a cell phone.
From: FAIRCHILD FAN2001/FAN2011 DC-DC Converter PCB Grounding Application Note
What is the quiescent current in Power Save mode?
The quiescent current is reduced to 25µA in Power Save mode.
From: Fairchild FAN2001/FAN2002 1A High-Efficiency Step-Down DC-DC Converter Datasheet
What is the maximum output current this converter can provide?
The device can provide up to 1A of output current over a wide input range.
From: Fairchild FAN2001/FAN2002 1A High-Efficiency Step-Down DC-DC Converter Datasheet