Silent Switcher® Technology
Analog Devices’ Silent Switcher® technology is the greatest development in power supplies since the switch-mode power supply itself. This noise-cancelling technology improves EMI performance in many noise-sensitive applications and increases system performance in efficiency, output ripple, and total solution size. ADI’s pioneering design community continues to develop Silent Switcher technology, driving to even lower system noise levels that benefit a continuously expanding range of applications.
Silent Switcher regulators provide new levels of performance with the combination of high efficiency (up to 96%) and low noise performance, without compromising on size or requiring excessive external components. The Silent Switcher architecture uses proprietary design and packaging techniques to maximize efficiency at very high frequencies and enable ultralow EMI performance, easily passing the CISPR 25 Class 5 peak EMI limits by using highly compact and robust designs.
With support for input voltages as high as 65 V, load currents up to 30 A, and high step-down ratios due to low minimum on times, there’s a Silent Switcher solution suitable for most applications including industrial, instrumentation and measurement, healthcare, aerospace, communications, automotive, energy, data center, and more.
Technology Evolution
Silent Switcher 1 Benefits
- Low EMI
- High efficiency
- High switching frequency
All 3, NO TRADE-OFFS!
Silent Switcher 2 Benefits
- Includes all the features of Silent Switcher 1 technology PLUS:
- Integrated precision capacitors
- Smaller solution size
- Eliminates PCB layout sensitivity
Silent Switcher 3 Benefits
- Includes all the features of Silent Switcher 1 technology PLUS:
- Ultralow LF noise (10 Hz to 100 kHz)
- Ultrafast transient response
Find the latest products in the Silent Switcher family.
Markets and Applications
Industrial
Programmable logic controllers, distributed control systems, sensors, and other industrial applications need power supplies that provide precise measurements, reliable communication, and smooth operations. Silent Switcher regulators ensure maximum efficiency to extend operating time and reduce heat dissipation.
Instrumentation and Measurement
Silent Switcher technology offers unique performance, design, and packaging techniques that result in the low noise precision necessary for communications test equipment, oscilloscopes, signal analyzers, chemical analysis, battery testing, and automated test equipment.
Communications
Silent Switcher technology’s ability to pass noise immunity standards and ensure smooth operation benefits communications applications such as 5G networks and wireless infrastructure. The low noise performance allows Silent Switcher regulators to sit closer to the point of load, even eliminating linear regulators in sensitive transmit and receive applications.
Automotive
Whether it’s autonomous driving, cabin electronics, MEMS safety and security, EV and HEV powertrain, or automotive power management, the Silent Switcher regulator’s low noise emission minimizes interference among different systems, essential for ensuring compliance with automotive regulations, such as the CISPR 25.
Healthcare
In healthcare applications such as portable ultrasound equipment, X-ray, CT imaging, and diagnostic and vital signs measurement systems, Silent Switcher technology helps to maximize image quality and reduce power consumption.
Intelligent Buildings
ADI helps customers innovate smart building and city solutions delivering secure and intelligent sensing, localized decision making, and power efficiency. With Silent Switcher technology, switch-mode power supply designs can be simplified and guaranteed to pass noise immunity standards for key noise sensitive applications such as surveillance, people counting, environmental monitoring, and energy management.
Aerospace and Defense
ADI’s comprehensive Silent Switcher portfolio and custom development provide ultralow noise solutions for a wide range of commercial and defense radar, avionic, communication, and control systems.
Data Center
ADI solutions apply to data centers of all scales, from the edge to hyperscale. Silent Switcher technology, combined with digital power system management (PMBus®), improves a noisy data center infrastructure while meeting stringent energy efficiency requirements.
Energy
Metering, energy monitoring, energy storage, and power conversion all require precise, low noise measurements to ensure consistent, safe, and optimal power grid operation. Silent Switcher technology drastically improves noisy power supplies while reducing overall solution size and cost.
Featured Resources
Reference Designs
Power Management Tools
All Resources
Solutions Bulletins & Brochures
Webcasts
Videos
Design Notes
- Monolithic 65V , 8A Step-Down Regulators with Fast Transient Response and Ultralow EMI Emissions
- 42 V, 2 A/3 A Peak Synchronous Step-Down Regulators with 2.5 µA Quiescent Current and Ultralow EMI Emission
- DN1044 - Dual Channel 42V, 4A Monolithic Synchronous Step-Down Silent Switcher 2 with 6.2μA Quiescent Current PDF