BOOT P GND A P GND GOOD f EN SW SiC466, SiC467, SiC468, SiC469 www.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 LINKS TO ADDITIONAL RESOURCES Highly efficient - 98 % peak efficiency - 4 A supply current at shutdown Design Tool Evaluation Design Tools Boards - 156 A operating current not switching Highly configurable DESCRIPTION - Adjustable switching frequency from 100 kHz to 2 MHz - Adjustable soft start and selectable preset 100 %, 75 %, The SiC46x is a family of wide input voltage high efficiency and 50 % current limit synchronous buck regulators with integrated high side and - 2 modes of operation, forced continuous conduction, low side power MOSFETs. Its power stage is capable of power save supplying high continuous current at up to 2 MHz switching Robust and reliable frequency. This regulator produces an adjustable output - Output over voltage protection voltage down to 0.8 V from 4.5 V to 60 V input rail - Output under voltage / short circuit protection with auto retry to accommodate a variety of applications, includin g - Power good flag and over temperature protection computing, consumer electronics, telecom, and industrial. - Supported by Vishay PowerCAD online design SiC46xs architecture delivers ultrafast transient response simulation with minimum output capacitance and tight ripple regulation Material categorization: for definitions of compliance please see www.vishay.com/doc 99912 at very light load. The device is internally compensated and is stable with any capacitor. No external ESR network is APPLICATIONS required for loop stability purpose. The device also Industrial and automation incorporates a power saving scheme that significantly Home automation increases light load efficiency. The regulator integrates a full Industrial and server computing protection feature set, including over current protection Networking, telecom, and base station power supplies (OCP), output overvoltage protection (OVP), short circuit Wall transformer regulation Robotics protection (SCP), output undervoltage protection (UVP) and High end hobby electronics: remote control cars, planes, thermal shutdown (OTP). It also has UVLO for input rail and and drones a user programmable soft start. 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 100 10000 TYP ICAL APPLICATION CIRCUIT V = 24 V, V = 12 V IN OUT 97 V = 48 V, V = 12 V IN OUT 94 C Input BOOT 91 V CIN 1000 Phase V 4.5 V to 60 V OUT DC DC SW 88 V IN SiC466 V = 24 V, V = 5 V V SiC467 IN OUT DD C 85 SiC468 V IN OUT V DRV SiC469 R SS NC up 82 V C I FB OUT LIMIT 100 V = 48 V, V = 5 V IN OUT MODE 79 NC R down C ss 76 R MODE 73 R fsw 70 10 0.01 0.1 1 I - Output Current (A) OUT Fig. 1 - Typical Application Circuit Fig. 2 - SiC467 Efficiency vs. Output Current S21-0231-Rev. G, 15-Mar-2021 Document Number: 76044 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 2nd line eff - Efficiency (%) 1st line 2nd lineSiC466, SiC467, SiC468, SiC469 www.vishay.com Vishay Siliconix PIN CONFIGURATION V 1 1 V CIN 19 SS SS 19 CIN 28 A GND 18 NC NC 18 P 28 AGND 2 GOOD 2 P GOOD 17 P P 17 GND GND EN 3 3 EN 16 V V 16 DRV DRV BOOT 4 4 BOOT 15 GL GL 15 30 14 SW SW 14 29 PHASE VIN 5 29 PGND 5 PHASE V 30 P 13 SW IN SW 13 GND PHASE 6 6 PHASE 12 SW SW 12 Fig. 3 - Pin Configuration PIN DESCRIPTION PIN NUMBER SYMBOL DESCRIPTION Supply voltage for internal regulators V and V . This pin should be tied to V , but can also be DD DRV IN 1V CIN connected to a lower supply voltage (> 5 V) to reduce losses in the internal linear regulators Open-drain power good indicator - high impedance indicates power is good. An external pull-up 2P GOOD resistor is required Enable pin. Tie high / low to enable / disable the IC accordingly. This is a high voltage compatible pin, 3EN can be tied to 60 V 4 BOOT High side driver bootstrap voltage 5, 6 PHASE Return path of high side gate driver 7, 8, 29 V Power stage input voltage. Drain of high side MOSFET IN 9, 10, 11, 17, 30 P Power ground GND 12, 13, 14 SW Power stage switch node 15 GL Low side MOSFET gate signal Supply voltage for internal gate driver. When using the internal LDO as a bias power supply, V is DRV 16 V DRV the LDO output. Connect a 4.7 F decoupling capacitor to P GND 18, 21 NC No connection internally Set the soft start ramp by connecting a capacitor to A . An internal current source will charge the GND 19 SS capacitor 20 V Output voltage sense point for internal ripple injection components OUT Feedback input for switching regulator used to program the output voltage - connect to an external 22 V FB resistor divider from V to A OUT GND 23, 28 A Analog ground GND 24 f Set the on-time by connecting a resistor to A SW GND 25 I Set the current limit by connecting I pin to A , float or V LIMIT LIMIT GND DD 26 V Bias supply for the IC. V is an LDO output, connect a 1 F decoupling capacitor to A DD DD GND 27 Mode Set various operation modes by connecting a resistor to A . See specification table for details GND S21-0231-Rev. G, 15-Mar-2021 Document Number: 76044 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 MODE 27 V 7 IN V 26 DD V 8 IN 25 I LIM 24 f SW A P 9 23 GND GND 22 V P 10 FB GND 21 NC P 11 GND 20 V OUT 20 V OUT P 11 21 NC GND P 10 22 V GND FB P 9 23 A GND GND 24 f SW 25 I LIM V 8 IN 26 V DD V 7 IN 27 MODE