SiC401, SiC402, SiC403

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Vishay Siliconix

Revision: 17-Nov-14

1

Document Number: 62923

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

Reference Board User’s Manual for SiC403 (6 A), SiC402 (10 A),

and SiC401 (15 A) Synchronous Buck Regulators

Note

• External divider network needed

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

0.6 V to accommodate a variety of applications, including

computing, consumer electronics, telecom, and industrial.

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.

The SiC40X family is available in lead (Pb)-free power

enhanced 5 mm x 5 mm MLP55-32L package.

FEATURES

• SiC401A/B: 3 V to 17 V input range.

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

• Selectable frequency from 200 kHz to 1 MHz with an

external resistor

• 95 % peak efficiency

• Stable with any capacitor; no external ESR network

required

• Ultrafast transient response

• Power saving scheme for increased light load efficiency

• Cycle-by-cycle current limit

• Fully protected with OTP, SCP, UVP, OVP

• -40 °C to +125 °C operating junction temperature

• Output voltage tracking

APPLICATIONS

• 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

• Computing, broadband, networking, LAN / WAN, optical,

test, and measurement

• A / V, high density cards, storage, DSL, STB, DVR, DTV,

industrial PC

Notes

• LC - low current inductor, HC - high current inductor

• The only difference between HC and LC board is the O / P

inductor size

PRODUCT SUMMARY SiC401A, SIC401BCD

Input Voltage Range

3 V to 17 V

Output Voltage Range

Operating Frequency

200 kHz to 1 MHz

Continuous Output Current

15 A

Package

MLP55-32L

PRODUCT SUMMARY SiC402A, SIC402BCD

Input Voltage Range

3 V to 28 V

Output Voltage Range

Operating Frequency

200 kHz to 1 MHz

Continuous Output Current

10 A

Package

MLP55-32L

PRODUCT SUMMARY SiC403A, SIC403BCD

Input Voltage Range

3 V to 28 V

Output Voltage Range

Operating Frequency

200 kHz to 1 MHz

Continuous Output Current

6 A

Package

MLP55-32L

ORDERING INFORMATION

BOARD PART NUMBER

MAX. OUTPUT CURRENT

SiC403DB-LC

6 A

SiC402DB-HC

10 A

SiC401DB-HC

15 A