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MAX17080 Datasheet

AMD 2-/3-Output Mobile Serial VID Controller

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19-4175; Rev 1; 5/09
AMD 2-/3-Output Mobile Serial
VID Controller
General Description
The MAX17080 is a triple-output, step-down, fixed-
frequency controller for AMD’s serial VID interface (SVI)
CPU and northbridge (NB) core supplies. The MAX17080
consists of two high-current SMPSs for the CPU cores
and one 3A internal switch SMPS for the NB core. The
two CPU core SMPSs run 180° out-of-phase for true
interleaved operation, minimizing input capacitance.
The 3A internal switch SMPS runs at twice the switching
frequency of the core SMPS, reducing the size of the
external components.
The MAX17080 is fully AMD SVI compliant. Output volt-
ages are dynamically changed through a 2-wire SVI,
allowing the SMPSs to be individually programmed to
different voltages. A slew-rate controller allows con-
trolled transitions between VID codes and controlled
soft-start. SVI also allows each SMPS to be individually
set into a low-power pulse-skipping state.
Transient phase repeat improves the response of the
fixed-frequency architecture, reducing the total output
capacitance for the CPU core. A thermistor-based tem-
perature sensor provides a programmable thermal-fault
output (VRHOT).
The MAX17080 includes output overvoltage protection
(OVP), undervoltage protection (UVP), and thermal pro-
tection. When any of these protection features detect a
fault, the controller shuts down. True differential current
sensing improves current limit and load-line accuracy.
The MAX17080 has an adjustable switching frequency,
allowing 100kHz to 600kHz operation per core SMPS,
www.DaatanSdhteweti4cUe.cthomat for the NB SMPS.
Applications
Mobile AMD SVI Core Supplies
Multiphase CPU Core Supplies
Voltage-Positioned, Step-Down Converters
Notebook/Desktop Computers
Pin Configuration appears at end of data sheet.
Features
o Dual-Output Fixed-Frequency Core Supply
Controller
Split or Combinable Outputs Detected at
Power-Up
Dynamic Phase Selection Optimizes
Active/Sleep Efficiency
Transient Phase Repeat Reduces Output
Capacitance
True Out-of-Phase Operation Reduces Input
Capacitance
Programmable AC and DC Droop
Accurate Current Balance and Current Limit
Integrated Drivers for Large Synchronous-
Rectifier MOSFETs
Programmable 100kHz to 600kHz Switching
Frequency
4V to 26V Battery Input Voltage Range
o 3A Internal Switch Northbridge SMPS
2.7V to 5.5V Input Voltage Range
2x Programmable Switching Frequency
100m/50mPower Switches
o ±0.5% VOUT Accuracy over Line, Load, and
Temperature
o AMD SVI-Compliant Serial Interface with
Switchable Address
o 7-Bit On-Board DAC: 0 to +1.550V Output Adjust
Range
o Integrated Boost Switches
o Adjustable Slew-Rate Control
o Power-Good (PWRGD) and Thermal-Fault
(VRHOT) Outputs
o System Power-OK (PGD_IN) Input
o Overvoltage, Undervoltage, and Thermal-Fault
Protection
o Voltage Soft-Startup and Passive Shutdown
o < 1µA Typical Shutdown Current
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX17080GTL+
-40°C to +105°C
40 TQFN
+Denotes a lead(Pb)-free and RoHS-compliant package.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX17080 Datasheet

AMD 2-/3-Output Mobile Serial VID Controller

No Preview Available !

AMD 2-/3-Output Mobile Serial
VID Controller
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VDD, VIN3, VCC, VDDIO to AGND ..............................-0.3V to +6V
PWRGD to AGND .....................................................-0.3V to +6V
SHDN to AGND ........................................................-0.3V to +6V
GNDS1, GNDS2, THRM, VRHOT to AGND..............-0.3V to +6V
CSP_, CSN_, ILIM12 to AGND .................................-0.3V to +6V
SVC, SVD, PGD_IN to AGND ...................................-0.3V to +6V
FBDC_, FBAC_, OUT3 to AGND ..............................-0.3V to +6V
OSC, TIME, OPTION, ILIM3 to AGND ........-0.3V to (VCC + 0.3V)
BST1, BST2 to AGND .............................................-0.3V to +36V
BST1, BST2 to VDD.................................................-0.3V to +30V
BST3 to AGND...................................(VDD - 0.3V) to (VLX3 + 6V)
LX1 to BST1..............................................................-6V to +0.3V
LX3 RMS Current (Note 2) .....................................................±3A
LX2 to BST2..............................................................-6V to +0.3V
LX3 to PGND (Note 2) ..............................................-0.6V to +6V
DH1 to LX1 ..............................................-0.3V to (VBST1 + 0.3V)
DH2 to LX2 ..............................................-0.3V to (VBST2 + 0.3V)
DL1 to PGND ..............................................-0.3V to (VDD + 0.3V)
DL2 to PGND ..............................................-0.3V to (VDD + 0.3V)
Continuous Power Dissipation (TA = +70°C)
40-Pin TQFN (derate 22.2mW/°C above +70°C) .......1778mW
Operating Temperature Range .........................-40°C to +105°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: Absolute Maximum Ratings measured with 20MHz scope bandwidth.
Note 2: LX3 has clamp diodes to PGND and IN3. If continuous current is applied through these diodes, thermal limits must be observed.
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
(Circuit of Figure 2, VIN = 12V, VCC = VDD = VIN3 = VSHDN = VPGD_IN = 5V, VDDIO = 1.8V, VOPTION = VGNDS_ = VAGND = VPGND,
VFBDC_ = VFBAC_ = VOUT3 = VCSP_ = VCSN_ = 1.2V, all DAC codes set to the 1.2V code, TA = 0°C to +85°C, unless otherwise noted.
Typical values are at TA = +25°C.)
PARAMETER
INPUT SUPPLIES
Input Voltage Range
www.DataSheet4U.com
VCC Undervoltage-Lockout
Threshold
SYMBOL
CONDITIONS
VIN
VBIAS
VIN3
VDDIO
VUVLO
Drain of external high-side MOSFET
VCC, VDD
VCC rising, 50mV typical hysteresis,
latched, UV fault
MIN TYP MAX UNITS
4 26
4.5 5.5
2.7 5.5
1.0 2.7
4.10 4.25 4.45
V
V
VCC Power-On Reset Threshold
Falling edge, typical hysteresis = 1.1V,
faults cleared and DL_ forced high when
VCC falls below this level
1.8
V
VDDIO Undervoltage-Lockout
Threshold
VDDIO rising, 100mV typical hysteresis,
latched, UV fault
0.7 0.8 0.9
V
VIN3 Undervoltage-Lockout
Threshold
VIN3 rising, 100mV typical hysteresis
2.5 2.6 2.7
V
Quiescent Supply Current (VCC)
ICC
Skip mode, FBDC_ and OUT3 forced
above their regulation points
5 10 mA
Quiescent Supply Currents (VDD)
Quiescent Supply Current (VDDIO)
Quiescent Supply Current (IN3)
Shutdown Supply Current (VCC)
IDD
IDDIO
IIN3
Skip mode, FBDC_ and OUT3 forced
above their regulation points, TA = +25°C
Skip mode, OUT3 forced above its
regulation point
SHDN = GND, TA = +25°C
0.01 1
10 25
80 200
0.01 1
µA
µA
µA
µA
2 _______________________________________________________________________________________


Part Number MAX17080
Description AMD 2-/3-Output Mobile Serial VID Controller
Maker Maxim Integrated Products
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MAX17080 Datasheet PDF






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