SiC531, SiC531A
www.vishay.com
Vishay Siliconix
S15-2799-Rev. A, 30-Nov-15
1
Document Number: 65999
For technical questions, contact: powerictechsupport@vishay.com
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
30 A VRPower
®
Integrated Power Stage
DESCRIPTION
The SiC531 and SiC531A 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
4.5 mm x 3.5 mm MLP package, SiC531 and SiC531A
enable voltage regulator designs to deliver up to 30 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 SiC531 and SiC531A incorporate an advanced
MOSFET gate driver IC that features high current driving
capability, adaptive dead-time control, an integrated
bootstrap Schottky diode, and zero current detection to
improve light load efficiency. The drivers are also
compatible with a wide range of PWM controllers, support
tri-state PWM, and 3.3 V (SiC531A) / 5 V (SiC531) PWM
logic.
FEATURES
• Thermally enhanced PowerPAK
®
MLP4535-22L
package
• Vishay’s Gen IV MOSFET technology and a
low-side MOSFET with integrated Schottky
diode
• Delivers up to 30 A continuous current, 35 A at 10 ms peak
current
• High efficiency performance
• High frequency operation up to 1.5 MHz
• Power MOSFETs optimized for 19 V input stage
• 3.3 V (SiC531A) / 5 V (SiC531) PWM logic with tri-state and
hold-off
• Zero current detect control for light load efficiency
improvement
• Low PWM propagation delay (< 20 ns)
• Under voltage lockout for V
CIN
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
• Multi-phase VRDs for computing, graphics card and memory
• Intel IMVP-8 VRPower delivery
-V
CORE
, V
GRAPHICS
, V
SYSTEM AGENT
Skylake, Kabylake platforms
-V
CCGI
for Apollo Lake platforms
• Up to 18 V rail input DC/DC VR modules
TYPICAL APPLICATION DIAGRAM
Fig. 1 - SiC531 and SiC531A Typical Application Diagram
PWM
controller
Gate
driver
5V V
IN
V
OUT
V
CIN
ZCD_EN#
PWM
V
DRV
V
IN
BOOT
V
SWH
P
GND
G
L
C
GND
PHASE
