Product Group: Vishay Siliconix, Power ICs / August 2014
Author: Ralph Monteiro
Tel: 1 408-970-5233
E-mail: ralph.monteiro@vishay.com
3 A Synchronous Buck Regulator With Fixed
650 kHz Switching Frequency in Space-Saving
3 mm by 3 mm Package
Vishay Intertechnology, Inc. (NYSE: VSH) introduces the latest member of its microBuck® family of
synchronous buck converters for low-power point-of-load applications. The SiP12116 combines high-side
and low-side n-channel MOSFETs, current-mode constant on-time (CM-COT) control, and a fixed 650
kHz switching frequency in a compact 3 mm by 3 mm DFN10 package. The easy-to-use, fully integrated
device is designed to meet nVidia™ OpenVreg Type 0 specifications, including the package and footprint
requirement.
Product Benefits:

Supports a 4.5 V to 15 V input voltage range

Fixed high 650 kHz switching frequency

Adjustable output voltage down to 0.6 V

3 A continuous output current

Advanced CM-COT control:


Ultra-fast transient response

Excellent line / load regulation

All ceramic solution; no ESR requirement

Advanced ripple control under light load

No compensation required
Full protection set:

Cycle-by-cycle current limit

Short circuit protection (SCP)

Over temperature protection (OTP)

Input under-voltage lockout (UVLO)

Power Good function

Supports all MLCC capacitor types for output filters

< 5 μA typical shutdown current

± 2 % output voltage accuracy

Fixed soft start: 1.2 ms typical

Tiny DFN10 3x3 package
Product Group: Vishay Siliconix, Power ICs / August 2014
Market Applications:

Point of load regulation for 5 V and 12 rails in space-constrained consumer electronics, computing,
telecom, and industrial applications

nVidia graphic card solution, server system power, DSPs, FPGAs, ASICs, set-top boxes, TV
power
The Key Specifications:

Continuous output current: 3 A

Switching frequency: 650 kHz

Input voltage range: 4.5 V to 15 V

Output voltage: 0.6 V to 5.5 V
Efficiency:
Product Group: Vishay Siliconix, Power ICs / August 2014
The Perspective:
The SiP12116 is a high-frequency CM-COT synchronous buck regulator with integrated high-side and
low-side power MOSFETs. Its power stage is capable of supplying up to 3 A of continuous current at a
650 kHz switching frequency. The regulator produces an adjustable output voltage down to 0.6 V from
4.5 V to 15 V input rails to accommodate a variety of applications.
The SiP12116’s CM-COT control delivers ultra-fast transient response and low ripple over the full load
range with minimum output capacitance and no ESR requirements. The device features a built-in soft
start of 1 ms, while offering design simplicity with minimal external components and integrated
compensation. Only seven external components are needed to complete a 3 A buck regulator design in a
total of 100 mm2.
The device offers a full protection set, including cycle-by-cycle current limit, short circuit protection (SCP),
over temperature protection (OTP), and input under-voltage lockout (UVLO). Designed to meet the
nVidia OpenVreg Type 0 specifications, the SiP12116 is available in the 3 mm by 3 mm DFN10 package
with thermal pad.
Availability: Sample and production quantities of the SiP12116 are available now, with lead times of
10 to 12 weeks for larger orders.
To access the product datasheet on the Vishay Web site, go to
http://www.vishay.com/ppg?62969 (SiP12116)
Product Group: Vishay Siliconix, Power ICs / August 2014
Contact:
The Americas
Vishay Americas
PIC_Americas@vishay.com
Europe
Vishay Electronic GmbH
PIC_Europe@vishay.com
Asia
Vishay Intertechnology Asia Pte Ltd.
PIC_Asia@vishay.com