Download Advantages of Switching DC Regulators

Advantages of Switching DC Regulators
An Introduction to the V78 Series
Introduction
Purpose
To provide an overview of the V78 switching regulator series and it’s advantages
Objectives
 Introduce the V78 switching regulator series and it’s available configurations
 Describe the V78’s key features and specifications
 Compare the V78’s performance vs. comparable L78 linear regulators
 Describe typical applications for the V78 series
Content: 8 pages
Learning Time: 5 minutes
© 2012 CUI Inc
The Need to Regulate Voltage
 In many applications the input voltage supply is
unstable and can vary over a wide range
 A regulator is often needed to take this unstable
voltage source and convert it to a stable voltage
 This has been achieved for many years
using linear technology, a inexpensive,
though highly inefficient method to
convert and regulate voltage
 Using switching technology, CUI’s V78
series is able to achieve the same results
in a much more efficient manner
© 2012 CUI Inc
V78 Switching Regulator Series

High efficiency - up to 96%

Compact, no need for a heat sink

Wide input range - up to 6.5~32 Vdc

Low ripple & noise - 25mV p-p typical

Continuous short circuit protection (auto recovery)

Thermal protection set at 150°C

Pin compatible with 78XX linear regulators
© 2012 CUI Inc
Linear vs. Switching Regulators
V78 switching regulators
78XX linear regulators
Efficiency
84~96%
40~60%
Heatsink needed
No
Yes
Short circuit protection
Yes
No
Over temp protection
Yes
No
Negative conversion option
Yes
No
© 2012 CUI Inc
Positive to Negative Conversation Option
© 2012 CUI Inc
Applications
The V78 series is perfect for applications where the following is a concern:
High temperature
Automotive electronics, railway, industrial sensing, outdoor security
Power consumption
Infrared temperature detectors, hand-held GPS, portable communication equipment
Ripple & noise
Electrocardiography, spectrum therapy, weak signal detection, processing devices
Limited board space
Handheld equipment, medical devices, remote sensing
© 2012 CUI Inc
Available Configurations
Series
Output (Vdc)
Size (mm)
Package type
V78XX-500
3.3, 5, 6.5, 9, 12, 15
11.5 x 7.55 x 10.2
SIP
V78XX-500-SMT
3.3, 5, 12, 15
15.24 x 8.5 x 7.0
SMT
V78XX-1000
3.3, 5, 6.5, 9, 12, 15
Vertical orientation: 11.5 x 9.00 x 17.5
Right angle orientation: 11.5 x 17.5 x 9.00
SIP
V78XX-1500
2.5, 3.3, 5, 6.5
Vertical orientation: 11.5 x 9.00 x 17.5
Right angle orientation: 11.5 x 17.5 x 9.00
SIP
V78XX-2000
2.5, 3.3, 5, 6.5
Vertical orientation: 11.5 x 9.00 x 17.5
Right angle orientation: 11.5 x 17.5 x 9.00
SIP
© 2012 CUI Inc
Summary
 Voltage rails in many applications are often unstable and
need to be regulated
 The V78 series holds numerous advantages over linear
regulators thanks to the use of switching technology
 The V78 series is available now through Digi-Key
© 2012 CUI Inc