FDMF5822DCCT-ND Datasheet, PDF (1/25 Pages) Fairchild Semiconductor – FDMF5822DC-Smart Power Stage (SPS) Module with Integrated Thermal Warning and Thermal Shutdown

February 2014
FDMF5822DC – Smart Power Stage (SPS) Module
with Integrated Thermal Warning and Thermal Shutdown
Features
 Ultra-Compact 5 mm x 5 mm PQFN Copper-Clip
Package with Flip Chip Low-Side MOSFET and
Dual Cool Architecture
 High Current Handling: 55 A
 3-State 3.3 V PWM Input Gate Driver
 Dynamic Resistance Mode for Low-Side Drive
(LDRV) Slows Low-Side MOSFET during Negative
Inductor Current Switching
 Auto DCM (Low-Side Gate Turn Off) Using
ZCD# Input
 Thermal Warning (THWN#) to Warn Over-
Temperature of Gate Driver IC
 Thermal Shutdown (THDN)
 HS-Short Detect Fault# / Shutdown
 Dual Mode Enable / Fault# Pin
 Internal Pull-Up and Pull-Down for ZCD# and
EN Inputs, respectively
 Fairchild PowerTrench^® MOSFETs for Clean
Voltage Waveforms and Reduced Ringing
 Fairchild SyncFET™ Technology (Integrated
Schottky Diode) in Low-Side MOSFET
 Integrated Bootstrap Schottky Diode
 Optimized / Extremely Short Dead-Times
 Under-Voltage Lockout (UVLO) on VCC
 Optimized for Switching Frequencies up to 1.5 MHz
 PWM Minimum Controllable On-Time: 30 ns
 Low Shutdown Current: < 3 µA
 Optimized FET Pair for Highest Efficiency:
10 ~ 15% Duty Cycle
 Operating Ambient Temperature Range:
-40°C to +125°C
 Fairchild Green Packaging and RoHS Compliance
Description
The SPS family is Fairchild’s next-generation, fully
optimized, ultra-compact, integrated MOSFET plus
driver power stage solution for high-current, high-
frequency, synchronous buck, DC-DC applications. The
FDMF5822DC integrates a driver IC with a bootstrap
Schottky diode, two power MOSFETs, and a thermal
monitor into a thermally enhanced, ultra-compact 5 mm,
x 5 mm package.
With an integrated approach, the SPS switching power
stage is optimized for driver and MOSFET dynamic
performance, minimized system inductance, and power
MOSFET R_DS(ON). The SPS family uses Fairchild's high-
performance PowerTrench^® MOSFET technology,
which reduces switch ringing, eliminating the need for a
snubber circuit in most buck converter 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. A thermal shutdown function turns off the
driver if an over-temperature condition occurs. The
FDMF5822DC incorporates an Auto-DCM Mode (ZCD#)
for improved light-load efficiency. The FDMF5822DC
also provides a 3-state 3.3 V PWM input for
compatibility with a wide range of PWM controllers.
Applications
 Servers and Workstations, V-Core and Non-V-Core
DC-DC Converters
 Desktop and All-in-One Computers, V-Core and
Non-V-Core DC-DC Converters
 High-Performance Gaming Motherboards
 High-Current DC-DC Point-of-Load Converters
 Networking and Telecom Microprocessor Voltage
Regulators
 Small Form-Factor Voltage Regulator Modules
Ordering Information
Part Number Current Rating
Package
FDMF5822DC
55 A
31-Lead, Clip Bond PQFN SPS, 5.0 mm x 5.0 mm Package
Top Mark
FDMF5822DC
© 2013 Fairchild Semiconductor Corporation
FDMF5822DC • Rev. 1.0.1
www.fairchildsemi.com