SiC401, SiC402, SiC403
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Vishay Siliconix
Reference Board User’s Manual for SiC403 (6 A), SiC402 (10 A),
and SiC401 (15 A) Synchronous Buck Regulators
FEATURES
PRODUCT SUMMARY SiC401A, SIC401BCD
• SiC401A/B: 3 V to 17 V input range.
Input Voltage Range
Output Voltage Range
Operating Frequency
Continuous Output Current
Package
3 V to 17 V
0.6 V to VIN x 0.75
200 kHz to 1 MHz
15 A
SiC402A/B, SiC403A/B: 3 V to 28 V input range.
• Adjustable output voltage down to 0.6 V
• 6 A (SiC403), 10 A (SiC402), and 15 A (SiC401) continuous
output current
MLP55-32L
• Selectable frequency from 200 kHz to 1 MHz with an
external resistor
PRODUCT SUMMARY SiC402A, SIC402BCD
• 95 % peak efficiency
Input Voltage Range
Output Voltage Range
Operating Frequency
Continuous Output Current
Package
3 V to 28 V
0.6 V to VIN x 0.75
200 kHz to 1 MHz
10 A
• Stable with any capacitor; no external ESR network
required
• Ultrafast transient response
• Power saving scheme for increased light load efficiency
MLP55-32L
•
1 % accuracy of VOUT setting
• Cycle-by-cycle current limit
PRODUCT SUMMARY SiC403A, SIC403BCD
• Fully protected with OTP, SCP, UVP, OVP
• PGOOD Indicator
Input Voltage Range
Output Voltage Range
Operating Frequency
Continuous Output Current
Package
3 V to 28 V
0.6 V to VIN x 0.75
200 kHz to 1 MHz
6 A
• -40 °C to +125 °C operating junction temperature
• Output voltage tracking
MLP55-32L
APPLICATIONS
Note
External divider network needed
• Point of load regulation for low-power processors,
network processors, DSPs, FPGAs, and ASICs
•
• Low voltage, distributed power architectures with 5 V or
12 V, or 24 V rails
DESCRIPTION
The SiC401, SiC402, and SiC403 are high frequency
voltage-mode constant-on-time (CM-COT) synchronous
buck regulators with integrated high-side and low-side
power MOSFETs. The SiC403 is capable of 6 A continuous
current, the SiC402 is capable of 10 A and the SiC401 15 A.
These regulators produce an adjustable output voltage
which in standard setup can output 5 V down to 0.6 V
and with the VOUT divider network 75 % of VIN down to
0.6 V to accommodate a variety of applications, including
computing, consumer electronics, telecom, and industrial.
• Computing, broadband, networking, LAN / WAN, optical,
test, and measurement
• A / V, high density cards, storage, DSL, STB, DVR, DTV,
industrial PC
ORDERING INFORMATION
BOARD PART NUMBER
MAX. OUTPUT CURRENT
SiC403DB-LC
6 A
SiC402DB-HC
10 A
15 A
The CM-COT architecture delivers ultra-fast transient
response with minimum output capacitance and tight ripple
regulation at very light load. The parts are stable with any
capacitor type and no ESR network is required for loop
stability. The regulator integrates a full protection feature
set, it also has UVLO for the input rail and an internal
soft-start.
SiC401DB-HC
Notes
•
•
LC - low current inductor, HC - high current inductor
The only difference between HC and LC board is the O / P
inductor size
The SiC40X family is available in lead (Pb)-free power
enhanced 5 mm x 5 mm MLP55-32L package.
Revision: 17-Nov-14
Document Number: 62923
1
For technical questions, contact: powerictechsupport@vishay.com
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