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MAX1703ESE+ ,1-Cell to 3-Cell, High Power (1.5A), Low-Noise, Step-Up DC-DC ConverterELECTRICAL CHARACTERISTICS (continued)(CLK/SEL = AIN = ON = POKIN = FB = PGND = GND, OUT = POUT, LX ..
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MAX4522EEE ,Quad / Low-Voltage / SPST Analog SwitchesGeneral Description ________
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MAX17039GTN+-MAX17039GTN+T
Dual-Output, 3-Phase + 1-Phase Quick-PWM Controller for VR12/IMVP7
Dual-Output, 3-Phase + 1 Phase Quick-PWM
Controller for VR12/IMVP-7
General Description
The MAX17039 is a dual-output, step-down, constant-
on-time controller for VR12/IMVP-7 CPU core supplies.
The controller consists of two high-current-switching
power supplies for the CPU and GPU cores. The CPU
regulator (regulator A) is a three-phase constant-on-time
architecture. The optional 3rd phase is configured with
an external MAX8791 or MAX17491 driver. The second
GPU regulator (regulator B) is also a constant-on-time
architecture with only single phase.
Both regulators A and B include true differential voltage
and current sensing to improve load-line and current-
limit accuracy. Switching frequencies are independently
programmable, allowing 100kHz to 600kHz per phase
operation. Output overvoltage protection (OVP), under-
voltage protection (UVP), and thermal protection ensure
effective and highly reliable operation. When any of
these protection features detect a fault, the controller
shuts down both channels.
Regulator A includes transient-phase overlap, which
speeds up the response time, reducing the total output
capacitance. Regulator A also includes active overshoot
suppression to further reduce the required output decou-
pling capacitance.
Both controllers are fully compliant with Intel’s VR12/
IMVP-7 serial VID communication and control speci-
fications. CPU and GPU outputs are controlled inde-
pendently by writing the appropriate data into a func-
tion-mapped register file. A slew-rate controller allows
controlled transitions between VID codes, controlled
soft-start. The SVID interface also allows each regulator
to be individually set into a low-power pulse-skipping
state. Individual phases can be shut down based on the
processors’ operating conditions to optimize efficiency.
The MAX17039 is available in a lead-free, 56-pin, 7mm x
7mm TQFN package.
Applications
VR12/IMVP-7 CPU Core Power Supplies
Voltage-Positioned Step-Down Converters
Notebooks/Desktops/Servers
Features
S Supports all Required IMVP-7 Functions
S Three-Phase Quick-PWM™ CPU Core (Regulator A)
Two Internal Drivers and One External Driver
Active Overshoot Suppression
Transient-Phase Overlap Mode
Dynamic Phase Selection
Phase-Good Fault Detection (Internal)
S One-Phase Quick-PWM with Internal Driver
(Regulator B)
S Intel VR12/IMVP-7-Compliant 25MHz Serial Interface
S 8-Bit IMVP-7 DAC
S ±0.4% VOUT Accuracy Over Line, Load, and
Temperature
S Active Voltage Positioning with Programmable Gain
S Accurate Lossless Current Balance
S Accurate Droop and Current Limit
S Remote Output and Ground Sense
S Power-Good Window Comparators (VR__READY)
S Output Current Monitors (IMON_)
S 4.5V to 26V Battery-Input Range
S Drives Large Synchronous Rectifier MOSFETs
S Programmable 100kHz to 600kHz Switching
Frequency
S External Thermal-Fault Detection (VR_HOT#) Output
S Overvoltage, Undervoltage, and Thermal-Fault
Protection
S Soft-Start and Soft-Shutdown
S Integrated Boost Switches
S Low-Profile 56-Lead TQFN Package
XX-XXXX; Rev 0; 7/09
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
Pin Configuration appears at end of data sheet.
PARTTEMP
RANGE
PIN-
PACKAGEFEATURE
MAX17039GTN+ -40NC to
+105NC56 TQFN
3-phase +
1 phase
(1 external
driver)
This datasheet has been :
www.ic-phoenix.com
Datasheets for electronic components.
