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 LINKS TO ADDITIONAL RESOURCES - 1 % output voltage accuracy from -40 C to +125 C Highly efficient Design Tool Evaluation Design Tools - 95 % peak efficiency Boards - 1 A supply current at shutdown DESCRIPTION - 50 A operating current, not switching The SiC931 is a synchronous buck regulator module with integrated power MOSFETs and inductor. Its power stage Highly configurable 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, including computing, consumer electronics, telecom, and - Programmable modes of operation: forced continuous industrial. conduction or power save mode SiC931s architecture supports ultrafast transient response Robust and reliable with minimum output capacitance and tight ripple regulation - Cycle-by-cycle current limit at very light load. The device is internally compensated and no external ESR network is required for loop stability - Output overvoltage protection purposes. The device also incorporates a power saving - Output undervoltage / short circuit protection with auto scheme that significantly increases light load efficiency. retry The regulator integrates a full protection feature set, -Power good flag and over temperature protection including output over voltage protection (OVP), cycle by cycle over current protection (OCP) short circuit protection High power density (SCP) and thermal shutdown (OTP). It also has UVLO and a - Integration of high current output inductor user programmable soft start. - 10.6 mm x 6.5 mm x 3 mm low profile MLP package The SiC931 is available in lead (Pb)-free power enhanced Ease of use PowerPAK MLP60-A6 package in 10.6 mm x 6.5 mm x 3 mm dimensions. - Minimum peripheral components APPLICATIONS - All ceramic capacitors for input and output 5 V and 12 V input rail POLs Material categorization: for definitions of compliance Desktop, notebooks, server, and industrial computing please see www.vishay.com/doc 99912 Industrial and automation consumer electronics TYPICAL APPLICATION CIRCUIT AND EFFICIENCY Axis Title BOOT 100 10000 V = 4.5 V to 18 V IN V IN SW V = 5 V, f = 1.5 MHz SW OUT V = 0.6 V to 5.5 V OUT P GOOD V OUT V = 3.3 V, f = 1.5 MHz SW OUT 95 1000 EN V DD FB V DRV 90 100 V = 1.8 V, fSW = 1 MHz OUT 85 10 010 20 I - Output Current (A) OUT Fig. 2 - Efficiency vs. Output Current Fig. 1 - Typical Application Circuit (V = 12 V, Power Save Mode enabled) IN S21-0186-Rev. D, 01-Mar-2021 Document Number: 79602 1 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 MODE1 MODE2 A GND P GND 2nd line eff - Efficiency (%) 1st line 2nd lineSiC931 www.vishay.com Vishay Siliconix PIN CONFIGURATION Top view Bottom view Fig. 3 - Top View and Bottom View 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 51 30 V SW OUT 52 29 V SW OUT 63 28 53 SW V OUT 54 27 SW V OUT 55 26 SW V OUT 61 56 25 SW V OUT 57 24 SW V OUT 62 23 58 SW V OUT 59 22 SW V OUT 21 60 SW V OUT 5 1 2 3 4 67 8 9 10 11 12 13 14 15 16 17 18 19 20 Fig. 4 - Pin Configuration (Top Transparent View) PIN DESCRIPTION PIN NUMBER SYMBOL DESCRIPTION 1 to 3, 9, 44, 45, SW Switching node 48 to 60 4, 43, 46, 47, 63 V Power input IN 5 to 8, 11, 37, 62 P Power ground GND 10 GL Low side power MOSFET gate signal 12 V Supply voltage for internal gate driver. Connect a 2.2 F decoupling capacitor to P DRV GND 13 V Supply voltage for internal logic. Connect a 1 F decoupling capacitor to A DD GND 14, 61 A Analog ground GND 15 FB Output voltage feedback pin connect to V through a resistor divider network OUT 16, 19 to 32 V Output voltage sense pin OUT 17, 18, 33, 34 NC Not internally connected 35 MODE2 Soft start and current limit selection connect a resistor to V or A per Table 2 DD GND 36 MODE1 Operating mode and switching frequency selection connect a resistor to V or A per Table 1 DD GND 38 EN Enable pin 39 P Power good open drain output GOOD 40 V Input to internal 5 V LDO. Recommend to connect to V pins CIN IN 41 BOOT Bootstrap pin. Connect 100 nF capacitor between BOOT and SW for high side driver supply S21-0186-Rev. D, 01-Mar-2021 Document Number: 79602 2 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 SW SW SW SW SW SW V V IN IN P V IN GND SW P GND SW P GND P V GND IN SW GH GL BOOT P V GND IN V P DRV GOOD V EN DD A P GND GND FB MODE1 V MODE2 OUT NC NC NC NC V V OUT OUT V V OUT OUT