High Performance DrMOS - Vishay Siliconix
Description
SiC778A
Vishay Siliconix
High Performance DrMOS – Integrated Power Stage
DESCRIPTION
The SiC778 is an integrated power stage solution optimized for synchronous buck applications offering high current, high efficiency and high power density.
Packaged in Vishay’s proprietary 6 mm x 6 mm MLP package, SiC778 enables voltage regulator designs to deliver in excess of 40 A per phase current with 91 % peak efficiency.
The internal Power MOSFETs utilize Vishay’s state-of-the-art TrenchFET Gen III technology that delivers industry bench-mark performance by significantly reducing switching and conduction losses.
The SiC778 incorporates an advanced MOSFET gate driver IC that features high current driving capability, adaptive dead-time control, an integrated bootstrap Schottky diode, and a thermal warning (THDN) that alerts the system of excessive junction temperature.
The driver is also compatible with a wide range of PWM controllers and supports tri-state PWM, 3.
3 V (SiC778ACD) PWM logic, and skip mode (SMOD) to improve light load efficiency.
FEATURES
• Thermally enhanced PowerPAK® MLP6x6-40L package • Industry benchmark MOSFET with integrated Schottky diode • Delivers in excess of 40 A continuous current • 91 % peak efficiency • High frequency operation up to 1 MHz • Power MOSFETs optimized for 12 V input stage • 3.
3 V PWM logic with tri-state and hold-off • SMOD logic for light load efficiency boost • Low PWM propagation delay (< 20 ns) • Thermal monitor flag • Enable feature • VCIN UVLO • Compliant with Intel DrMOS 4.
0 specification • Material categorization: For definitions of compliance please see www.
vishay.
com/doc?99912
APPLICATIONS
• Synchronous buck converters • Multi-phase VRDs for CPU, GPU, and memory • DC/DC POL modules
www.
DataSheet.
net/
TYPICAL APPLICATION DIAGRAM
Figure 1: SiC778 Typical Application Diagram
Document Number: 63808 S12-1132-Rev.
B, 21-May-12
For technical support, please contact: powerictechsupport@vishay.
com
www.
vishay.
com 1
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