MAX17009GTL+ Maxim Integrated Products, MAX17009GTL+ Datasheet

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MAX17009GTL+

Manufacturer Part Number
MAX17009GTL+
Description
IC CTLR VIDEO SERIAL DUAL 40TQFN
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX17009GTL+

Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX17009 is a 2-phase, step-down interleaved,
fixed-frequency controller for AMD’s
face (SVI) CPU core supplies. Power-on detection of
the CPU configures the MAX17009 as two independent
single-phase regulators for a dual CPU core applica-
tion, or one high-current, dual-phase, combined-output
regulator for a unified core application. A reference
buffer output (NBV_BUF) sets the voltage-regulation
level for a North Bridge (NB) regulator, completing the
total CPU cores and NB power requirements.
The MAX17009 is fully AMD SVI compliant. Output volt-
ages are dynamically changed through a 2-wire serial
interface, allowing the switching regulator and the refe-
rence buffer to be individually programmed to different
voltages. A programmable slew-rate controller enables
controlled transitions between VID codes, soft-start limits
the inrush current, and soft-shutdown brings the output
voltage back down to zero without any negative ring.
Transient phase repeat improves the response of the
fixed-frequency architecture. Independently program-
mable AC and DC droop and selectable offset improve
stability and reduce the total output-capacitance
requirement. A thermistor-based temperature sensor
allows for a programmable thermal-fault output
(VRHOT). The MAX17009 includes thermal-fault protec-
tion, undervoltage protection (UVP), and selectable out-
put overvoltage protection (OVP). When any of these
protection features detect a fault, the controller shuts
down. True differential current sensing improves cur-
rent limit, load-line accuracy, and current balance when
operating in combined mode. The MAX17009 has an
adjustable switching frequency, allowing 100kHz to
1.2MHz per-phase operation.
19-0814; Rev 0; 5/07
Pin Configuration appears at end of data sheet.
AMD is a registered trademark of Advanced Micro Devices, Inc.
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.
Mobile AMD SVI Core Supply
Multiphase CPU Core Supply
Voltage-Positioned, Step-Down Converters
Notebook/Desktop Computers
________________________________________________________________ Maxim Integrated Products
General Description
AMD Mobile Serial VID Dual-Phase
Applications
®
serial VID inter-
Fixed-Frequency Controller
o Dual-Output, Fixed-Frequency, Core Supply
o Separate or Combinable Outputs Detected at
o Reference Buffer Output for NB Controller
o ±0.4% V
o AMD SVI-Compliant Serial Interface
o 7-Bit On-Board DAC: 0 to +1.550V Output Adjust
o Dynamic Phase Selection Optimizes Active/Sleep
o Transient Phase Repeat Reduces Output
o True Out-of-Phase Operation Reduces Input
o Integrated Boost Switches
o Programmable AC and DC Droop
o Programmable 100kHz to 1.2MHz Switching
o Accurate Current Balance and Current Limit
o Adjustable Slew-Rate Control
o Power-Good (PWRGD) and Thermal-Fault
o System Power-OK (PGD_IN) Input
o Drives Large Synchronous-Rectifier MOSFETs
o 4V to 26V Battery Input-Voltage Range
o Overvoltage, Undervoltage, and Thermal-Fault
o Power Sequencing and Timing
o Soft-Startup and Soft-Shutdown
o < 1µA Typical Shutdown Current
+ Denotes a lead-free package.
* EP = Exposed pad.
MAX17009GTL+
Controller
Power-Up
Temperature
Range
Efficiency
Capacitance
Capacitance
Frequency
(VRHOT) Outputs
Protection
PART
OUT
Accuracy Over Line, Load, and
-40°C to +105°C
TEMP RANGE
Ordering Information
PIN-
PACKAGE
40 TQFN-EP*,
5mm x 5mm
Features
T4055-1
CODE
PKG
1

Related parts for MAX17009GTL+

MAX17009GTL+ Summary of contents

Page 1

... Battery Input-Voltage Range o Overvoltage, Undervoltage, and Thermal-Fault Protection Applications o Power Sequencing and Timing o Soft-Startup and Soft-Shutdown o < 1µA Typical Shutdown Current PART MAX17009GTL+ + Denotes a lead-free package Exposed pad. Features Accuracy Over Line, Load, and OUT Ordering Information PIN- TEMP RANGE ...

Page 2

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller ABSOLUTE MAXIMUM RATINGS GND_............................-0.3V to +6V DD1, DD2, CC DDIO PWRGD to GND_......................................................-0.3V to +6V FBDC_, FBAC_, PRO to GND_ ...................-0. GNDS2, THRM, VRHOT to ...

Page 3

... TIME Slew-Rate Accuracy CURRENT LIMIT Current-Limit Threshold Tolerance Zero-Crossing Threshold Idle Mode™ Threshold Tolerance CS_ Input-Leakage Current CS_ Common-Mode Input Range Phase-Disable Threshold Idle Mode is a trademark of Maxim Integrated Products, Inc. _______________________________________________________________________________________ Fixed-Frequency Controller = SHDN = PGD_IN = 5V DD2 DDIO CONDITIONS DAC codes from 0.8375V to 1.5500V V DAC codes from 0 ...

Page 4

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V DD1 GND_, FBDC_ = FBAC_ = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V ...

Page 5

AMD Mobile Serial VID Dual-Phase ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V DD1 GND_, FBDC_ = FBAC_ = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V code, T ...

Page 6

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V DD1 GND_, FBDC_ = FBAC_ = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V ...

Page 7

AMD Mobile Serial VID Dual-Phase ELECTRICAL CHARACTERISTICS (Circuit of Figure 12V DD1 GND_, FBDC_ = FBAC_ = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V code, T (Note ...

Page 8

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V DD1 GND_, FBDC_ = FBAC_ = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V ...

Page 9

AMD Mobile Serial VID Dual-Phase ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V DD1 GND_, FBDC_ = FBAC_ = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V code, T ...

Page 10

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V DD1 GND_, FBDC_ = FBAC_ = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V ...

Page 11

AMD Mobile Serial VID Dual-Phase (Circuit of Figure 12V 1-PHASE EFFICIENCY vs. LOAD CURRENT (V = 1.2125V) OUT 100 ...

Page 12

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller (Circuit of Figure 12V MAXIMUM INDUCTOR CURRENT vs. TEMPERATURE 12V PEAK CURRENT 1.2V DC CURRENT OUT 27 25 ...

Page 13

AMD Mobile Serial VID Dual-Phase (Circuit of Figure 12V STARTUP SEQUENCE WAVEFORMS MAX17009 toc19 400μs/div A. ...

Page 14

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller (Circuit of Figure 12V 1-PHASE OUTPUT OVERLOAD MAX17009 toc27 3. 200μs/div A. ...

Page 15

AMD Mobile Serial VID Dual-Phase PIN NAME Open-Drain, Power-Good Output. PWRGD indicates when both SMPSs are in regulation. PWRGD is forced high impedance whenever the slew-rate controller is active (output-voltage transitions). After output-voltage transitions, except during power-up and power-down, if ...

Page 16

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller PIN NAME Slew-Rate Adjustment Pin. Connect a resistor R where R TIME respectively, for the SMPSs, and NBV_BUF currents between 28µA and 2.8µA, respectively, for the NBV_BUF. 7 TIME This slew rate applies ...

Page 17

AMD Mobile Serial VID Dual-Phase PIN NAME Negative Current-Sense Input for SMPS2. Connect to the negative side of the output current-sensing 16 CSN2 resistor or the filtering capacitor if the DC resistance of the output inductor is utilized for current ...

Page 18

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller PIN NAME Protection Disable. Connect Connect 33 When is floated, the MAX17009 disables the OVP protection and also enters debug mode (see the pin description). When PGD_IN is low in debug mode, the ...

Page 19

AMD Mobile Serial VID Dual-Phase PIN NAME Output of the DC Voltage-Positioning Transconductance Amplifier for SMPS1. Connect a resistor R between FBDC1 and the positive side of the feedback remote sense to set the DC steady- FBDC1 state droop based ...

Page 20

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller Table 2. Component Suppliers MANUFACTURER AVX www.avxcorp.com BI Technologies www.bitechnologies.com Central Semiconductor www.centralsemi.com Fairchild Semiconductor www.fairchildsemi.com International Rectifier www.irf.com KEMET www.kemet.com NEC Tokin www.nec-tokin.com Panasonic www.panasonic.com Standard Application Circuits The MAX17009 standard application ...

Page 21

AMD Mobile Serial VID Dual-Phase R VCC 10Ω VCC 2.2μF R OSC 6 OSC R TIME 7 TIME C REF 0.22μF AGND 4 REF R ILIM1 5 ILIM R ILIM2 14 CONNECT TO SYSTEM V DDIO ...

Page 22

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller Interleaved Multiphase Operation The MAX17009 interleaves both phases—resulting in 180° out-of-phase operation that minimizes the input and output filtering requirements, reduces electromagnetic interference (EMI), and improves efficiency. The high- side MOSFETs do not ...

Page 23

AMD Mobile Serial VID Dual-Phase The maximum allowable AC droop is limited by the rec- ommended integrator correction range of ±100mV and on the DC droop: 100 − ≤ FBAC FBDC mSI LOAD MAX SENSE ...

Page 24

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller SHDN FAULT1 FAULT2 V CC REF REF (2.0V) OFS_EN DEBUG 7-BIT VID DAC1 MODE SKIP1 PGD_IN 7-BIT VID DAC2 V SKIP2 DDIO SVC SVD DAC3 7-BIT VID NBSKP NBV_BUF TIME GNDS_NB OSC x2 ...

Page 25

AMD Mobile Serial VID Dual-Phase Inside the MAX17009 are three 7-bit digital-to-analog converters (DACs). Each DAC can be individually pro- grammed to different voltage levels through the serial- interface bus. The DAC sets the target for the output voltage for ...

Page 26

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller ( ≅ × OUT TARGET where dV /dt is the required slew rate, C TARGET the total output capacitance. The MAX17009 SMPSs remain in a pulse-skipping mode even during ...

Page 27

AMD Mobile Serial VID Dual-Phase Table 4. Output Voltage VID DAC Codes (continued) OUTPUT SVID[6:0] SVID[6:0] VOLTAGE (V) 000_1010 1.4250 010_1010 000_1011 1.4125 010_1011 000_1100 1.4000 010_1100 000_1101 1.3875 010_1101 000_1110 1.3750 010_1110 000_1111 1.3625 010_1111 001_0000 1.3500 011_0000 001_0001 ...

Page 28

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller During downward VID transitions, the controller tem- porarily sets the OVP threshold to 1.85V (typ), preventing false OVP faults. Once the error amplifier detects that the output voltage is in regulation, the OVP ...

Page 29

AMD Mobile Serial VID Dual-Phase DH_ LX_ MAX17009 DL_ GND CSP_ CSN_ A) SERIES SENSE-RESISTOR SENSING DH_ LX_ MAX17009 DL_ GND CSP_ CSN_ B) OUTPUT INDUCTOR DCR SENSING Figure 5. Current-Sense Configurations L ESL = SENSE R ...

Page 30

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller Power-Up Sequence (POR, UVLO, PGD_IN) Power-on reset (POR) occurs when V approximately 2V, resetting the fault latch and prepar- ing the controller for operation. The V lockout (UVLO) circuitry inhibits switching until V ...

Page 31

AMD Mobile Serial VID Dual-Phase Notes: 1) The relationship between DC_IN and V guaranteed possible to have V when DC_IN is not powered, and it is possible to have DC_IN power-up before the V power ...

Page 32

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller BUS IDLE SVC/SVD SVC/SVD BUS IDLE (PRO = OPEN) V CORE0 (CORE0 TARGET) (CORE1 TARGET) V CORE1 (NBV_BUF TARGET) V NBV_BUF PGD_IN PWRGD NOTE: MAX17009 IS IN SKIP MODE. CORE0 IS LIGHTLY LOADED. ...

Page 33

AMD Mobile Serial VID Dual-Phase R THRM PLACE R NEXT TO THE NTC HOTTEST POWER COMPONENT. R NTC Figure 8. THRM Configuration VRHOT Temperature Comparator The MAX17009 features an independent comparator with an accurate threshold (V ) that tracks the ...

Page 34

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller Thermal-Fault Protection The MAX17009 features a thermal-fault protection cir- cuit. When the junction temperature rises above +160°C, a thermal sensor sets the fault latch and shuts down, immediately forcing DH and DL low, ...

Page 35

AMD Mobile Serial VID Dual-Phase Table 6. OPTION Pin Settings OPTION OFFSET ENABLED OPEN 0 REF 1 GND 1 Offset and Transient-Phase Repeat (OPTION) The +12.5mV offset and the transient-phase repeat fea- tures of the MAX17009 can ...

Page 36

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller ⎛ ⎞ − OUT = L ⎜ ⎟ ⎝ ⎠ LIR SW LOAD MAX ( ) where I is the maximum current per phase, LOAD(MAX) and f is ...

Page 37

AMD Mobile Serial VID Dual-Phase When using low-capacity ceramic-filter capacitors, capacitor size is usually determined by the capacity needed to prevent V from causing problems during SOAR load transients. Generally, once enough capacitance is added to meet the overshoot requirement, ...

Page 38

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller V , consider reducing the size of N IN(MIN lower does not vary over a DS(ON) GATE IN wide range, the minimum power dissipation occurs where the ...

Page 39

AMD Mobile Serial VID Dual-Phase where N is the number of high-side MOSFETs used for one regulator, and Q is the gate charge specified GATE in the MOSFET’s data sheet. For example, assume (2) IRF7811W n-channel MOSFETs are used on ...

Page 40

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller Each receiving device, when addressed, is obliged to generate an acknowledge after the reception of each byte. The master device must generate an extra clock pulse that is associated with this acknowledge bit. ...

Page 41

AMD Mobile Serial VID Dual-Phase Table 7. SVI Send Byte Address Description BITS DESCRIPTION 6:4 Always 110b don’t care set, then the following data byte contains DAC2 2 the VID for V ; bit ...

Page 42

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller • Keep the drivers close to the MOSFET, with the gate-drive traces (DL, DH, LX, and BST) short and wide to minimize trace resistance and inductance. This is essential for high-power MOSFETs that ...

Page 43

AMD Mobile Serial VID Dual-Phase Pin Configuration TOP VIEW DH1 VRHOT 32 PRO 33 34 CSP1 35 CSN1 MAX17009 36 PGD_IN OPTION 37 38 FBAC1 39 FBDC1 40 GNDS1 1 ...

Page 44

AMD Mobile Serial VID Dual-Phase Fixed-Frequency Controller (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 44 ______________________________________________________________________________________ Package Information ...

Page 45

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 45 © 2007 Maxim Integrated Products ...

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