SIC789 Datasheet, PDF (1/19 Pages) Vishay Siliconix – Thermal monitor flag

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SiC789, SiC789A
Vishay Siliconix
60 A VRPower^® Integrated Power Stage
DESCRIPTION
The SiC789 and SiC789A are integrated power stage
solutions optimized for synchronous buck applications to
offer high current, high efficiency, and high power
density performance. Packaged in Vishay’s proprietary
6 mm x 6 mm MLP package, SiC789 and SiC789A enable
voltage regulator designs to deliver up to 60 A continuous
current per phase.
The internal power MOSFETs utilize Vishay’s
state-of-the-art Gen IV TrenchFET technology that delivers
industry benchmark performance to significantly reduce
switching and conduction losses.
The SiC789 and SiC789A incorporate an advanced
MOSFET gate driver IC that features high current driving
capability, adaptive dead-time control, an integrated
bootstrap Schottky diode, a thermal warning (THWn) that
alerts the system of excessive junction temperature, and
skip mode (SMOD#) to improve light load efficiency. The
drivers are also compatible with a wide range of PWM
controllers and supports tri-state PWM, 3.3 V (SiC789A) /
5 V (SiC789) PWM logic.
FEATURES
• Thermally enhanced PowerPAK^® MLP66-40L
package
• Vishay’s Gen IV MOSFET technology and a
low-side MOSFET with integrated Schottky
diode
• Delivers up to 60 A continuous current
• 95 % peak efficiency
• High frequency operation up to 1.5 MHz
• Power MOSFETs optimized for 12 V input stage
• 3.3 V (SiC789A) / 5 V (SiC789) PWM logic with tri-state and
hold-off
• SMOD# logic for light load efficiency improvement
• Low PWM propagation delay (< 20 ns)
• Thermal monitor flag
• Faster enable / disable
• Under voltage lockout for V_CIN
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
• Multi-phase VRDs for CPU, GPU, and memory
TYPICAL APPLICATION DIAGRAM
5V
PWM
controller
V_CIN
SMOD#
DSBL#
PWM
THWn
Gate
driver
BOOT
PHASE
V_SWH
V_IN
VOUT
Fig. 1 - SiC789 and SiC789A Typical Application Diagram
S14-2287-Rev. B, 08-Dec-14
1
Document Number: 62972
For technical questions, contact: [e-mail]
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