P GND VIN GH G L CGND VDRV SiC788, SiC788A www.vishay.com Vishay Siliconix 50 A VRPower Integrated Power Stage DESCRIPTION FEATURES Thermally enhanced PowerPAK MLP66-40L The SiC788 and SiC788A are integrated power stage package solutions optimized for synchronous buck applications to offer high current, high efficiency, and high power Vishays Gen IV MOSFET technology and a density performance. Packaged in Vishays proprietary low-side MOSFET with integrated Schottky 6 mm x 6 mm MLP package, SiC788 and SiC788A enable diode voltage regulator designs to deliver up to 50 A continuous Delivers up to 50 A continuous current current per phase. 95 % peak efficiency The internal power MOSFETs utilize Vishays High frequency operation up to 1.5 MHz state-of-the-art Gen IV TrenchFET technology that delivers Power MOSFETs optimized for 12 V input stage industry benchmark performance to significantly reduce 3.3 V (SiC788A) / 5 V (SiC788) PWM logic with tri-state and switching and conduction losses. hold-off The SiC788 and SiC788A incorporate an advanced SMOD logic for light load efficiency improvement MOSFET gate driver IC that features high current driving Low PWM propagation delay (< 20 ns) capability, adaptive dead-time control, an integrated bootstrap Schottky diode, a thermal warning (THWn) that Thermal monitor flag alerts the system of excessive junction temperature, and Faster enable / disable skip mode (SMOD ) to improve light load efficiency. The Under voltage lockout for V CIN drivers are also compatible with a wide range of PWM Material categorization: for definitions of compliance controllers and supports tri-state PWM, 3.3 V (SiC788A) / please see www.vishay.com/doc 99912 5 V (SiC788) PWM logic. APPLICATIONS Multi-phase VRDs for CPU, GPU, and memory TYPICAL APPLICATION DIAGRAM 5V V IN BOOT PHASE V CIN SMOD V SWH DSBL VOUT Gate PWM driver PWM controller THWn Fig. 1 - SiC788 and SiC788A Typical Application Diagram S15-0163-Rev. C, 02-Feb-15 Document Number: 62985 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 91000SiC788, SiC788A www.vishay.com Vishay Siliconix PINOUT CONFIGURATION SMOD 1 30 VSWH VSWH 30 1 SMOD VCIN 2 VSWH 29 2 VCIN 29 VSWH 41 41 28 PGND PGND 28 VDRV 3 3 VDRV CGND CGND 27 PGND PGND 27 4 BOOT BOOT 4 PGND 26 CGND 5 26 PGND 5 CGND 43 43 VSWH VSWH PGND 25 GH 6 25 PGND 6 GH PHASE 7 24 PGND PGND 24 7 PHASE 42 42 VIN 8 23 PGND PGND 23 VIN 8 VIN VIN 22 PGND PGND 22 9 VIN VIN 9 VIN 10 21 PGND PGND 21 10 VIN Top view Bottom view Fig. 2 - SiC788 and SiC788A Pin Configuration PIN DESCRIPTION PIN NUMBER NAME FUNCTION 1 SMOD Low-side gate turn-off logic. Active low 2V Supply voltage for internal logic circuitry CIN 3V Supply voltage for internal gate driver DRV 4 BOOT High-side driver bootstrap voltage 5, 37, 41 C Analog ground for the driver IC GND 6 GH High-side gate signal 7 PHASE Return path of high-side gate driver 8 to 14, 42 V Power stage input voltage. Drain of high-side MOSFET IN 15, 29 to 35, 43 V Switch node of the power stage SWH 16 to 28 P Power ground GND 36 GL Low-side gate signal 38 THWn Thermal warning open drain output 39 DSBL Disable pin. Active low 40 PWM PWM control input ORDERING INFORMATION PART NUMBER PACKAGE MARKING CODE OPTION SiC788ACD-T1-GE3 SiC788A 3.3 V PWM optimized PowerPAK MLP66-40L SiC788CD-T1-GE3 SiC788 5 V PWM optimized SiC788ADB and SiC788DB Reference board S15-0163-Rev. C, 02-Feb-15 Document Number: 62985 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 VIN 11 40 PWM VIN 12 39 DSBL VIN 13 38 THWn VIN 14 37 CGND VSWH 15 36 GL PGND 16 35 VSWH PGND 17 34 VSWH PGND 18 33 VSWH PGND 19 32 VSWH PGND 20 31 VSWH PGND 20 31 VSWH 32 VSWH PGND 19 PGND 18 33 VSWH PGND 17 34 VSWH PGND 16 35 VSWH VSWH 15 36 GL VIN 14 37 CGND VIN 13 38 THWn VIN 12 39 DSBL VIN 11 40 PWM