SIC778A Datasheet, PDF (1/13 Pages) Vishay Siliconix – High Performance DrMOS – Integrated Power Stage

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.
TYPICAL APPLICATION DIAGRAM
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
• V_CIN 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
Figure 1: SiC778 Typical Application Diagram
Document Number: 63808
For technical support, please contact: [e-mail]
www.vishay.com
S12-1132-Rev. B, 21-May-12
1
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000