Current-Mode Controllers. MAX5041 Datasheet

MAX5041 Controllers. Datasheet pdf. Equivalent

Part MAX5041
Description Dual-Phase / Parallelable / Average Current-Mode Controllers
Feature 19-2514; Rev 3; 8/04 MAX5038/MAX5041 Dual-Phase, Parallelable, Average Current-Mode Controllers G.
Manufacture Maxim Integrated
Datasheet
Download MAX5041 Datasheet

19-2514; Rev 3; 8/04 MAX5038/MAX5041 Dual-Phase, Parallela MAX5041 Datasheet
19-3034; Rev 0; 10/03 MAX5038A/MAX5041A Dual-Phase, Parall MAX5041A Datasheet
Recommendation Recommendation Datasheet MAX5041 Datasheet





MAX5041
19-2514; Rev 3; 8/04
Dual-Phase, Parallelable, Average Current-Mode
Controllers
General Description
The MAX5038/MAX5041 dual-phase, PWM controllers
provide high-output-current capability in a compact
package with a minimum number of external compo-
nents. The MAX5038/MAX5041 utilize a dual-phase,
average current-mode control that enables optimal use
of low RDS(ON) MOSFETs, eliminating the need for exter-
nal heatsinks even when delivering high output currents.
Differential sensing enables accurate control of the out-
put voltage, while adaptive voltage positioning provides
optimum transient response. An internal regulator
enables operation with input voltage ranges of +4.75V to
+5.5V or +8V to +28V. The high switching frequency, up
to 500kHz per phase, and dual-phase operation allow
the use of low-output inductor values and input capacitor
values. This accommodates the use of PC board-
embedded planar magnetics achieving superior reliabili-
ty, current sharing, thermal management, compact size,
and low system cost.
The MAX5038/MAX5041 also feature a clock input
(CLKIN) for synchronization to an external clock, and a
clock output (CLKOUT) with programmable phase delay
(relative to CLKIN) for paralleling multiple phases. The
MAX5038 offers a variety of factory-trimmed preset output
voltages (see Selector Guide) and the MAX5041 offers an
adjustable output voltage from +1.0V to +3.3V.
The MAX5038/MAX5041 operate over the extended
industrial temperature range (-40°C to +85°C) and are
available in a 28-pin SSOP package. Refer to the
MAX5037 data sheet for a VRM 9.0-compatible, VID-
controlled output voltage controller in a 44-pin MQFP or
QFN package.
Applications
Servers and Workstations
Point-Of-Load High-Current/High-Density
Telecom DC-DC Regulators
Networking Systems
Large-Memory Arrays
RAID Systems
High-End Desktop Computers
Features
+4.75V to +5.5V or +8V to +28V Input Voltage
Range
Up to 60A Output Current
Internal Voltage Regulator for a +12V or +24V
Power Bus
True Differential Remote Output Sensing
Two Out-Of-Phase Controllers Reduce Input
Capacitance Requirement and Distribute Power
Dissipation
Average Current-Mode Control
Superior Current Sharing Between Individual
Phases and Paralleled Modules
Accurate Current Limit Eliminates MOSFET and
Inductor Derating
Integrated 4A Gate Drivers
Selectable Fixed Frequency 250kHz or 500kHz Per
Phase (Up to 1MHz for 2 Phases)
Fixed (MAX5038) or Adjustable (MAX5041) Output
Voltages
0.5% Accurate Reference (MAX5041B)
External Frequency Synchronization from 125kHz
to 600kHz
Internal PLL with Clock Output for Paralleling
Multiple DC-DC Converters
Thermal Protection
28-Pin SSOP Package
Ordering Information
PART
TEMP RANGE PIN-
OUTPUT
PACKAGE VOLTAGE
MAX5038EAI12
MAX5038EAI15
MAX5038EAI18
MAX5038EAI25
MAX5038EAI33
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
28 SSOP
28 SSOP
28 SSOP
28 SSOP
28 SSOP
Fixed +1.2V
Fixed +1.5V
Fixed +1.8V
Fixed +2.5V
Fixed +3.3V
MAX5041EAI
-40°C to +85°C 28 SSOP Adj +1.0V to
+3.3V
MAX5041BEAI -40°C to +85°C 28 SSOP Adj +1.0V to
+3.3V
Pin Configuration appears at end of data sheet.
________________________________________________________________Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.



MAX5041
Dual-Phase, Parallelable, Average Current-Mode
Controllers
ABSOLUTE MAXIMUM RATINGS
IN to SGND.............................................................-0.3V to +30V
BST_ to SGND…………………………………….…-0.3V to +35V
DH_ to LX_ ................................-0.3V to [(VBST_ - VLX_) + 0.3V]
DL_ to PGND ..............................................-0.3V to (VCC + 0.3V)
BST_ to LX_ ..............................................................-0.3V to +6V
VCC to SGND............................................................-0.3V to +6V
VCC to PGND............................................................-0.3V to +6V
SGND to PGND .....................................................-0.3V to +0.3V
All Other Pins to SGND...............................-0.3V to (VCC + 0.3V)
Continuous Power Dissipation (TA = +70°C)
28-Pin SSOP (derate 9.5mW/°C above +70°C) ............762mW
Operating Temperature Range ...........................-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = +5V, circuit of Figure 1, TA = -40°C to +85°C, unless otherwise noted. Typical specifications are at TA = +25°C.) (Note 1)
PARAMETER
SYSTEM SPECIFICATIONS
SYMBOL
CONDITIONS
Input Voltage Range
VIN Short IN and VCC together for +5V input
operation
Quiescent Supply Current
Efficiency
OUTPUT VOLTAGE
IQ EN = VCC or SGND
η ILOAD = 52A (26A per phase)
Nominal Output Voltage
Accuracy
MAX5038 only, no load
MAX5038 only, no load, VIN = VCC =
+4.75V to +5.5V or VIN = +8V to +28V
(Note 2)
MAX5041 only, no load
SENSE+ to SENSE- Voltage
Accuracy
MAX5041 only, no load, VIN = VCC =
+4.75V to +5.5V or VIN = +8V to +28V
MAX5041B only, no load
STARTUP/INTERNAL REGULATOR
VCC Undervoltage Lockout
UVLO
VCC Undervoltage Lockout
Hysteresis
MAX5041B only, no load,
VIN = +8V to +28V
VCC falling
VCC Output Accuracy
MOSFET DRIVERS
Output Driver Impedance
Output Driver Source/Sink
Current
VIN = +8V to +28V, ISOURCE = 0 to 80mA
RON Low or high output
IDH_, IDL_
Non-Overlap Time
tNO CDH_/DL_ = 5nF
MIN TYP MAX UNITS
8
4.75
4
90
28
5.5
10
V
mA
%
-0.8
-1
0.992
0.990
0.995
0.995
+0.8
+1
1.008
1.010
1.005
1.005
%
V
4.0 4.15 4.5
200
4.85 5.1 5.30
13
4
60
V
mV
V
A
ns
2 _______________________________________________________________________________________





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