SiC769ACD
Vishay Siliconix
Integrated DrMOS Power Stage
FEATURES
DESCRIPTION
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Integrated Gen III MOSFETs and DrMOS
compliant gate driver IC
The SiC769ACD is an integrated solution that contains PWM
optimized n-channel MOSFETs (high side and low side) and
a full featured MOSFET driver IC. The device complies with
the Intel DrMOS standard for desktop and server Vcore power
stages. The SiC769ACD delivers up to 35 A continuous
output current and operates from an input voltage range of
3 V to 16 V. The integrated MOSFETs are optimized for
output voltages in the ranges of 0.8 V to 2.0 V with a nominal
input voltage of 12 V. The device can also deliver very high
power at 5 V output for ASIC applications.
The SiC769ACD incorporates an advanced MOSFET gate
driver IC. This IC accepts a single PWM input from the VR
controller and converts it into the high side and low side
MOSFET gate drive signals. The driver IC is designed to
implement the skip mode (SMOD) function for light load
efficiency improvement. Adaptive dead time control also
works to improve efficiency at all load points. The
SiC769ACD has a thermal warning (THDN) that alerts the
system of excessive junction temperature. The driver IC
includes an enable pin, UVLO and shoot through protection.
The SiC769ACD is optimized for high frequency buck
applications. Operating frequencies in excess of 1 MHz can
easily be achieved.
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Enables Vcore switching at 1 MHz
Easily achieve > 90 % efficiency in multi-phase,
low output voltage solutions
Low ringing on the VSWH pin reduces EMI
Pin compatible with DrMOS 6 x 6 version 3.0
Tri-state PWM input function prevents negative output
voltage swing
3.3 V logic levels on PWM
MOSFET threshold voltage optimized for 5 V driver bias
supply
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Automatic skip mode operation (SMOD) for light load
efficiency
Under-voltage lockout
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Built-in bootstrap Schottky diode
Adaptive deadtime and shoot through protection
Thermal shutdown warning flag
Low profile, thermally enhanced PowerPAK® MLP 6 x 6
40 pin package
Halogen-free according to IEC 61249-2-21 definition
Compliant to RoHS directive 2002/95/EC
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The SiC769ACD is packaged in Vishay Siliconix high
performance PowerPAK MLP6 x 6 package. Compact
co-packaging of components helps to reduce stray
inductance, and hence increases efficiency.
APPLICATIONS
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CPU and GPU core voltage regulation
Server, computer, workstation, game console, graphics
boards, PC
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SiC769ACD APPLICATION DIAGRAMM
5 V
VIN
VCIN
SMOD
DSBL#
PWM
THDN
BOOT
VSWH
VO
PHASE
SiC769ACD
Figure 1
Document Number: 65708
S10-0113-Rev. B, 18-Jan-10
www.vishay.com
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