SIC769ACD Datasheet, PDF (1/19 Pages) Vishay Siliconix – Integrated DrMOS Power Stage

Integrated DrMOS Power Stage
SiC769ACD
Vishay Siliconix
DESCRIPTION
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 V_core 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 V_R
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.
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.
SiC769ACD APPLICATION DIAGRAMM
5V
FEATURES
• Integrated Gen III MOSFETs and DrMOS
compliant gate driver IC
• Enables V_core 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
• Automatic skip mode operation (SMOD) for light load
efficiency
• Under-voltage lockout
• 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
APPLICATIONS
• CPU and GPU core voltage regulation
• Server, computer, workstation, game console, graphics
boards, PC
V_IN
V_CIN
SMOD
DSBL#
PWM
THDN
BOOT
V_SWH
V_O
PHASE
SiC769ACD
Document Number: 65708
S10-0113-Rev. B, 18-Jan-10
Figure 1
www.vishay.com
1