Datasheet SiC931 (Vishay)

SiC931
www.vishay.com Vishay Siliconix
4.5 V to 18 V Input, 20 A microBRICK® DC/DC Regulator Module FEATURES
• Versatile - Operation from 4.5 V to 18 V input voltage - Adjustable output voltage down to 0.6 V - Output voltage tracking and sequencing with pre-bias start up - ± 1 % output voltage accuracy from -40 °C to
LINKS TO ADDITIONAL RESOURCES
+125 °C • Highly efficient - 95 % peak efficiency
Design Tool Evaluation Design Tools Boards
- 1 μA supply current at shutdown
DESCRIPTION
- 50 μA operating current, not switching The SiC931 is a synchronous buck regulator module with • Highly configurable integrated power MOSFETs and inductor. Its power stage is capable of supplying 20 A continuous current at up to - Four programmable switching frequencies available: 2 MHz switching frequency. This regulator produces an 600 kHz, 1 MHz, 1.5 MHz, and 2 MHz adjustable output voltage down to 0.6 V from 4.5 V to 18 V - Adjustable soft start and adjustable current limit input rail to accommodate a variety of applications, - Programmable modes of operation: forced continuous including computing, consumer electronics, telecom, and conduction or power save mode industrial. • Robust and reliable SiC931’s architecture supports ultrafast transient response with minimum output capacitance and tight ripple regulation - Cycle-by-cycle current limit at very light load. The device is internally compensated and - Output overvoltage protection no external ESR network is required for loop stability - Output undervoltage / short circuit protection with auto purposes. The device also incorporates a power saving retry scheme that significantly increases light load efficiency. -Power good flag and over temperature protection The regulator integrates a full protection feature set, including output over voltage protection (OVP), cycle by • High power density cycle over current protection (OCP) short circuit protection - Integration of high current output inductor (SCP) and thermal shutdown (OTP). It also has UVLO and a - 10.6 mm x 6.5 mm x 3 mm low profile MLP package user programmable soft start. • Ease of use The SiC931 is available in lead (Pb)-free power enhanced - Minimum peripheral components PowerPAK® MLP60-A6C package in 10.6 mm x 6.5 mm x 3 mm dimensions. - All ceramic capacitors for input and output • Material categorization: for definitions of compliance
APPLICATIONS
please see www.vishay.com/doc?99912 • 5 V and 12 V input rail POLs • Desktop, notebooks, server, and industrial computing • Industrial and automation • consumer electronics
TYPICAL APPLICATION CIRCUIT AND EFFICIENCY
 Axis Title BOOT 96 10000 V = 4.5 V to 18 V IN V V = 5 V, f = 1.5 MHz OUT sw IN SW 94 V = 0.6 V to 5.5 V OUT PGOOD VOUT 92 EN ) 1000 (% 90 VDD e V = 3.3 V, f = 1 MHz OUT sw e e in in V FB ency DRV 88 t lin s ffici 1 2nd l 2nd l E ND ND 86 G G f - MODE1 MODE2 A P 100 ef V = 1.8 V, f = 1.5 MHz OUT sw 84 82 80 10 0.01 0.1 1 10 I - Output Current (A) OUT
Fig. 1 - Typical Application Circuit Fig. 2 - Efficiency vs. Output Current (VIN = 12 V, Power Save Mode enabled)
S23-0880-Rev. G, 23-Oct-2023
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Document Number: 79602 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