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Vishay Intertechnology Electronic Components Datasheet

SIC778A Datasheet

High Performance DrMOS

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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
• 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/
Figure 1: SiC778 Typical Application Diagram
Document Number: 63808
For technical support, please contact: powerictechsupport@vishay.com
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
Datasheet pdf - http://www.DataSheet4U.co.kr/


Vishay Intertechnology Electronic Components Datasheet

SIC778A Datasheet

High Performance DrMOS

No Preview Available !

SiC778A
Vishay Siliconix
PIN CONFIGURATION
PIN DESCRIPTION
Pin Number
Symbol
1 SMOD#
2 VCIN
3 VDRV
4 BOOT
5, 37, P1
6
CGND
GH
7 PHASE
8 to 14, P2
15, 29 to 35, P3
16 to 28
36
VIN
VSWH
PGND
GL
38 THDN
39 DSBL#
40 PWM
Figure 2 - SiC778 Pin Configuration (Bottom View)
Description
LS FET turn-off logic. Active low
Supply voltagewww.DataSheet.net/ for internal logic circuitry
Supply voltage for internal gate driver
High side driver bootstrap voltage
Analog ground for the driver IC
High side gate signal
Return path of HS gate driver
Power stage input voltage. Drain of high side MOSFET
Phase node of the power stage
Power ground
Low side gate signal
Thermal shutdown open drain output
Disable pin. Active low
PWM input logic
www.vishay.com
For technical support, please contact: powerictechsupport@vishay.com
Document Number: 63808
2 S12-1132-Rev. B, 21-May-12
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
Datasheet pdf - http://www.DataSheet4U.co.kr/


Part Number SIC778A
Description High Performance DrMOS
Maker Vishay Siliconix
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