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SIC46X Datasheet(PDF) 1 Page - Vishay Siliconix

Part # SIC46X
Description  4.5 V to 60 V Input, 2 A, 4 A, 6 A, 10 A Synchronous Buck Regulators
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Manufacturer  VISHAY [Vishay Siliconix]
Direct Link  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

SIC46X Datasheet(HTML) 1 Page - Vishay Siliconix

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SiC461, SiC462, SiC463, SiC464
www.vishay.com
Vishay Siliconix
S18-0393-Rev. K, 16-Apr-18
1
Document Number: 65124
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
4.5 V to 60 V Input, 2 A, 4 A, 6 A, 10 A
Synchronous Buck Regulators
DESCRIPTION
The SiC46x is a family of wide input voltage, high efficiency
synchronous buck regulators with integrated high side and
low side power MOSFETs. Its power stage is capable of
supplying high continuous current at up to 2 MHz switching
frequency. This regulator produces an adjustable output
voltage down to 0.8 V from 4.5 V to 60 V input rail to
accommodate
a
variety
of
applications,
including
computing, consumer electronics, telecom, and industrial.
SiC46x’s architecture allows for ultrafast transient response
with minimum output capacitance and tight ripple regulation
at very light load. The device enables loop stability
regardless of the type of output capacitor used, including
low ESR ceramic capacitors. The device also incorporates a
power saving scheme that significantly increases light load
efficiency. The regulator integrates a full protection feature
set, including over current protection (OCP), output
overvoltage protection (OVP), short circuit protection (SCP),
output undervoltage protection (UVP) and over temperature
protection (OTP). It also has UVLO for input rail and a user
programmable soft start.
The SiC46x family is available in 2 A, 4 A, 6 A, 10 A pin
compatible 5 mm by 5 mm lead (Pb)-free power enhanced
MLP55-27L package.
TYPICAL APPLICATION CIRCUIT
Fig. 1 - Typical Application Circuit for SiC46x
FEATURES
• Versatile
- Single supply operation from 4.5 V to 60 V
input voltage
- Adjustable output voltage down to 0.8 V
- Scalable solution 2 A (SiC464), 4 A (SiC463),
6 A (SiC462), 10 A (SiC461)
- Output voltage tracking and sequencing with
pre-bias start up
- ± 1 % output voltage accuracy at -40 °C to +125 °C
• Highly efficient
- 98 % peak efficiency
- 4 μA supply current at shutdown
- 235 μA operating current, not switching
• Highly configurable
- Adjustable switching frequency from 100 kHz to 2 MHz
- Adjustable soft start and adjustable current limit
- 3 modes of operation, forced continuous conduction,
power save or ultrasonic
• Robust and reliable
- Output over voltage protection
- Output under voltage / short circuit protection with auto
retry
- Power good flag and over temperature protection
- Supported
by
Vishay
PowerCAD
online
design
simulation
• Design support tools
- PowerCAD online design simulation (vishay.transim.com)
- External component calculator (www.vishay.com/doc?75760)
- Schematic,
design,
BOM,
and
gerber
files
(www.vishay.com/doc?75763)
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
• Industrial and automation
• Home automation
• Industrial and server computing
• Networking, telecom, and base station power supplies
• Unregulated wall transformer
• Robotics
• High end hobby electronics: remote control cars, planes,
and drones
• Battery management systems
• Power tools
• Vending, ATM, and slot machines
Fig. 2 - SiC462 Efficiency vs. Output Current
VIN
VDD
SW
COUT
VOUT
VFB
C
BOOT
SS
VSNS
Rx
Cx
Rlimit
Rfsw
ILIMIT
CIN
PHASE
COMP
Rcomp
VCIN
VDRV
MODE
Css
Ccomp
Cy
ULTRASONIC
INPUT
4.5 VDC to 60 VDC
Rup
Rdown
SiC46x
68
72
76
80
84
88
92
96
100
0.01
0.1
1
Output Current, I
OUT (A)
Complete converter efficiency
P
IN = [(VIN x IIN) + 5 V x (IVDRV + IVCIN)]
P
OUT = VOUT x IOUT, measured at output capacitor
Complete converter efficiency
P
IN = [(VIN x IIN) + (V
CIN x ICIN)]
P
OUT = VOUT x IOUT, measured at output capacitor
V
IN = 48 V, VOUT = 12 V
VIN = 48 V, VOUT = 5 V
VIN = 24 V, VOUT = 5 V
VIN = 24 V, VOUT = 12 V


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