Extra-Small, High-Performance, High-Frequency DrMOS Module FDMF6821C www.onsemi.com Description The XS DrMOS family is ON Semiconductors nextgeneration, fully optimized, ultracompact, integrated MOSFET plus driver power stage solution for highcurrent, high frequency, synchronous buck DCDC applications. The FDMF6821C integrates a driver IC, two power MOSFETs, and a bootstrap Schottky diode into a thermally enhanced, ultracompact 6x6 mm package. With an integrated approach, the complete switching power stage is optimized with regard to driver and MOSFET dynamic performance, PQFN40 6X6, 0.5P system inductance, and power MOSFET R . XS DrMOS uses DS(ON) CASE 483AN ON Semiconductors high performance POWERTRENCH MOSFET technology, which dramatically reduces switch ringing, eliminating the need for snubber circuit in most buck converter MARKING DIAGRAM applications. A driver IC with reduced dead times and propagation delays further enhances the performance. A thermal warning function warns of a potential over temperature situation. The FDMF6821C also Y&Z&3&K FDMF incorporates a Skip Mode (SMOD ) for improved light load 6821C efficiency. The FDMF6821C also provides a 3state 3.3 V PWM input for compatibility with a wide range of PWM controllers. Features Y = ON Semiconductor Logo Over 93% PeakEfficiency &Z = Assembly Plant Code &3 = Numeric Date Code HighCurrent Handling: 50 A &K = Lot Code HighPerformance PQFN CopperClip Package FDMF6821C = Specific Device Code 3State 3.3 V PWM Input Driver SkipMode SMOD (LowSide Gate Turn Off) Input ORDERING INFORMATION Thermal Warning Flag for OverTemperature Condition See detailed ordering and shipping information on page 2 of Driver Output Disable Function (DISB Pin) this data sheet. Internal PullUp and PullDown for SMOD and DISB Inputs, Respectively ON Semiconductor PowerTrench Technology MOSFETs for Clean Voltage Waveforms and Reduced Ringing ON Semiconductor SyncFET (Integrated Schottky Diode) Technology in LowSide MOSFET Integrated Bootstrap Schottky Diode Adaptive Gate Drive Timing for ShootThrough Protection UnderVoltage Lockout (UVLO) Optimized for Switching Frequencies up to 1 MHz LowProfile SMD Package Based on the Intel 4.0 DrMOS Standard This Device is PbFree, Halogen Free/BFR Free and is RoHS Compliant Semiconductor Components Industries, LLC, 2012 1 Publication Order Number: January, 2020 Rev. 2 FDMF6821C/DFDMF6821C Benefits Compact Blade Servers, VCore and NonVCore UltraCompact 6x6 mm PQFN, 72% SpaceSaving DCDC Converters Compared to Conventional Discrete Solutions Desktop Computers, VCore and NonVCore Fully Optimized System Efficiency DCDC Converters Clean Switching Waveforms with Minimal Ringing Workstations HighCurrent Handling HighCurrent DCDC PointofLoad Converters Networking and Telecom Microprocessor Voltage Applications Regulators HighPerformance Gaming Motherboards Small FormFactor Voltage Regulator Modules ORDERING INFORMATION Part Number Current Rating Package Top Mark FDMF6821C 50 A 40Lead, Clipbond PQFN DrMOS, 6.0 mm x 6.0 mm Package FDMF6821C Typical Application Circuit V IN V 5V 3V ~ 16V C C VIN VDRV VDRV VCIN VIN R BOOT DISB DISB BOOT C BOOT PWM Input PWM FDMF6821C PHASE OFF SMOD ON VSWH V OUT L OUT Open-Drain THWN Output C OUT CGND PGND Figure 1. Typical Application Circuit www.onsemi.com 2