SiC466, SiC467, SiC468, SiC469www.vishay.com Vishay Siliconix
4.5 V to 60 V Input, 2 A, 4 A, 6 A, 10 A microBUCK® DC/DC Converter FEATURES• Versatile - Single supply operation from 4.5 V to 60 V input voltage - Adjustable output voltage down to 0.8 V - Scalable solution 2 A (SiC469), 4 A (SiC468), 6 A (SiC467), 10 A (SiC466) - Output voltage tracking and sequencing with pre-bias start up - ± 1 % output voltage accuracy at -40 °C to +125 °C • Internal compensation • Highly efficient - 98 % peak efficiency - 4 μA supply current at shutdown - 156 μA operating current not switching • Highly configurable - Adjustable switching frequency from 100 kHz to 2 MHz
DESCRIPTION- Adjustable soft start and selectable preset 100 %, 75 %, and 50 % current limit The SiC46x is a family of wide input voltage high efficiency - 2 modes of operation, forced continuous conduction, synchronous buck regulators with integrated high side and power save low side power MOSFETs. Its power stage is capable of • Robust and reliable - Output over voltage protection supplying high continuous current at up to 2 MHz switching - Output under voltage / short circuit protection with auto frequency. This regulator produces an adjustable output retry voltage down to 0.8 V from 4.5 V to 60 V input rail - Power good flag and over temperature protection - Supported by Vishay PowerCAD online design to accommodate a variety of applications, including simulation computing, consumer electronics, telecom, and industrial. • Design support tools - PowerCAD online design simulation (vishay.transim.com) SiC46x’s architecture delivers ultrafast transient response - External component calculator (www.vishay.com/doc?75760) with minimum output capacitance and tight ripple regulation - Schematic, design, BOM, and gerber files at very light load. The device is internally compensated and (www.vishay.com/doc?75763) • Material categorization: for definitions of compliance is stable with any capacitor. No external ESR network is please see www.vishay.com/doc?99912 required for loop stability purpose. The device also incorporates a power saving scheme that significantly
APPLICATIONS• Industrial and automation increases light load efficiency. The regulator integrates a full • Home automation protection feature set, including over current protection • Industrial and server computing (OCP), output overvoltage protection (OVP), short circuit • Networking, telecom, and base station power supplies protection (SCP), output undervoltage protection (UVP) and • Wall transformer regulation • Robotics thermal shutdown (OTP). It also has UVLO for input rail and • High end hobby electronics: remote control cars, planes, a user programmable soft start. and drones • Battery management systems The SiC46x family is available in 2 A, 4 A, 6 A, 10 A pin • Power tools compatible 5 mm by 5 mm lead (Pb)-free power enhanced • Vending, ATM, and slot machines MLP55-27L package. Axis Title
TYPICAL APPLICATION CIRCUIT100 10000 V = 24 V, V = 12 V IN OUT 97 V = 48 V, V = 12 V IN OUT 94 EN P BOOT C G Input BOOT OOD V ) 91 CIN Phase V 4.5 V 1000 OUT DC to 60 VDC (% V SW 88 IN SiC466 V = 24 V, V = 5 V IN OUT ne ne V SiC467 ine DD C iency 85 IN SiC468 V V OUT c DRV SiC469 R ffi 1st li 2nd l 2nd li SS NC up E 82 V I FB C LIMIT OUT 100 V = 48 V, V = 5 V MODE A P IN OUT NC R eff - 79 G G C f down ss S ND ND W 76 RMODE 73 Rfsw 70 10 0.01 0.1 1
Fig. 1 - Typical Application CircuitI - Output Current (A) OUT
Fig. 2 - SiC467 Efficiency vs. Output CurrentS19-0911-Rev. E, 28-Oct-2019
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