MAX8552 Datasheet, PDF (1/11 Pages) Maxim Integrated Products – High-Speed, Wide-Input, Single-Phase MOSFET Driver

19-2997; Rev 0; 10/03
EVAALVUAAILTAIOBNLEKIT
-PIN ^TD
High-Speed, Wide-Input,
Single-Phase MOSFET Driver
mm _{x 3.0}
General Description
Features
The MAX8552 highly integrated monolithic MOSFET dri-
ver is capable of driving a pair of power MOSFETs in
single or multiphase synchronous buck-converter appli-
cations that provide up to 30A output current per
phase. The MAX8552 simplifies PC board layout in mul-
tiphase systems, particularly three phases and higher.
High input voltages up to 24V allow the MAX8552 to be
used in desktop, notebook, and server applications.
Each MOSFET driver is capable of driving 3000pF
capacitive loads with only 12ns propagation delay and
11ns (typ) rise and fall times, making the MAX8552
ideal for high-frequency applications.
o Single-Phase Synchronous Drivers
o Up to 24V (max) Input Voltage
o 0.1µA (typ) Quiescent Current in Shutdown Over
Temperature
o 0.5Ω/1.0Ω/0.7Ω/1.3Ω R_OUT Drivers
o 12ns (typ) Propagation Delay
o 11ns (typ) Rise/Fall Times with 3000pF Load
o Adaptive Dead Time and User-Programmable
Delay Mode
User-programmable break-before-make circuitry pre-
vents shoot-through currents, maximizing converter effi-
ciency. An enable input allows total driver shutdown
(<1µA typ) for power-sensitive portable applications.
The PWM control input is compatible with TTL and
CMOS logic levels. The MAX8552, along with the
MAX8524 or the MAX8525 multiphase controllers, pro-
vides flexible 2-, 3-, 4-, 6-, or 8-phase CPU core-voltage
supplies.
o Up to 2MHz Operation with TDFN Package
o Up to 1.2MHz Operation with µMAX Package
o Enable Function
o TTL- and CMOS-Compatible Logic Inputs
o Available in a Space-Saving Thin DFN Package
The MAX8552 is available in space-saving 10-pin TDFN
and µMAX packages and is specified for -40°C to
+85°C operation.
Applications
Multiphase Buck Converters
Voltage Regulator Modules (VRMs)
PART
MAX8552EUB
MAX8552ETB
Ordering Information
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
10 µMAX
10 TDFN
3mm x 3mm
Processor-Core Voltage Regulators
Desktops, Notebooks, and Servers
Pin Configurations appear at end of data sheet.
Switching Power Supplies
Typical Operating Circuit
V_CC
4.5V TO 6.5V
V_CC
BST
V_IN
6V TO 24V
ON
OFF
GND
DH
EN MAX8552 LX
DLY
DL
V_OUT
1.45V AT 20A
PWM CONTROL
SIGNAL
PWM
PGND
________________________________________________________________ Maxim Integrated Products 1
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