MAX17082GTL+ Maxim Integrated Products, MAX17082GTL+ Datasheet

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MAX17082GTL+

Manufacturer Part Number
MAX17082GTL+
Description
IC CTLR PWM DUAL IMVP-6.5 40TQFN
Manufacturer
Maxim Integrated Products
Series
Quick-PWM™r
Datasheet

Specifications of MAX17082GTL+

Applications
Controller, Intel IMVP-6.5™
Voltage - Input
4.5 ~ 5.5 V
Number Of Outputs
1
Operating Temperature
-40°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
40-TQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Lead Free Status / Rohs Status
 Details
The MAX17021/MAX17082/MAX17482 are 2/1-phase-
interleaved Quick-PWM™ step-down VID power-supply
controllers for notebook CPUs. True out-of-phase oper-
ation reduces input ripple current requirements and
output- voltage ripple, while easing component selec-
tion and layout difficulties. The Quick-PWM control pro-
vides instantaneous response to fast load-current
steps. Active voltage positioning reduces power dissi-
pation and bulk output capacitance requirements and
allows ideal positioning compensation for tantalum,
polymer, or ceramic bulk output capacitors.
A slew-rate controller allows controlled transitions between
VID codes, controlled soft-start and shutdown, and con-
trolled exit from suspend. A thermistor-based temperature
sensor provides a programmable thermal-fault output
(VRHOT). A current monitor output (IMON) provides an
analog current output proportional to the power consumed
by the CPU (MAX17082/MAX17482 only). Output under-
voltage, overvoltage (MAX17021/MAX17082 only), and
thermal protection shut the controller down when any of
these faults are detected. A voltage-regulator power-OK
(PWRGD) output indicates the output is in regulation.
Additionally, the MAX17021/MAX17082/MAX17482 fea-
ture true differential current sense and a phase-good
(PHASEGD) output that indicates a phase imbalance
fault condition.
The MAX17021 supports the IMVP-6+ specification
while the MAX17082/MAX17482 support the IMVP-6.5
requirements. The MAX17021/MAX17082/MAX17482
are available in a 5mm x 5mm, 40-pin TQFN package.
+ Denotes a lead-free(Pb)/RoHS-compliant package.
* EP = Exposed pad.
Quick-PWM is a trademark of Maxim Integrated Products, Inc.
19-4372; Rev 2; 7/09
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.
MAX17021GTL+
MAX17082GTL+
MAX17482GTL+
IMVP-6+/IMVP-6.5 Core Supply
Multiphase CPU Core Supply
Voltage-Positioned, Step-Down Converters
Notebook/Desktop Computers
Blade Servers
PART
IMVP-6+/IMVP-6.5 CPU Core Power Supplies
________________________________________________________________ Maxim Integrated Products
Ordering Information
Dual-Phase, Quick-PWM Controllers for
-40°C to +105°C
-40°C to +105°C
-40°C to +105°C
TEMP RANGE
General Description
Applications
PIN-PACKAGE
40 TQFN-EP*
40 TQFN-EP*
40 TQFN-EP*
o Single-/Dual-Phase, Quick-PWM Controllers
o MAX17021 IMVP-6+ (Montevina)
o MAX17082/MAX17482 IMVP-6.5 (Calpella)
o ±0.5% V
o 7-Bit 0 to 1.50V VID Control
o Dynamic Phase Selection Optimizes Active/Sleep
o Transient Phase Overlap Reduces Output
o Integrated Boost Switches
o Active Voltage Positioning with Adjustable Gain
o Programmable 200kHz to 800kHz Switching
o Accurate Current Balance and Current Limit
o Adjustable Slew-Rate Control
o Power-Good, Clock Enable, and Thermal-Fault
o Phase Current Imbalance Fault Output
o Drives Large Synchronous Rectifier MOSFETs
o 4V to 26V Battery Input-Voltage Range
o Undervoltage and Thermal-Fault Protection
o Overvoltage Protection (MAX17021/MAX17082)
o Soft-Startup and Soft-Shutdown
TOP VIEW
DPRSTP (SLOW)
() DESIGNATES MAX17082/MAX17482 PIN NAME.
*EXPOSED PAD. CONNECTED TO GND.
Temperature
Efficiency
Capacitance
Frequency
Outputs
CSN1
CSP1
D0
D1
D2
D3
D4
D5
D6
OUT
31
32
33
34
35
36
37
38
39
40
+
30
1
Accuracy Over Line, Load, and
29
2
28
3
27
4
(MAX17082)
THIN QFN
MAX17021
MAX17482
26
5
Pin Configuration
25
6
24 23 22
7
*EP
8
9
10
Features
21
20
19
18
17
16
15
14
13
12
11
PHASEGD
PWRGD
V3P3
TON
PSI
DPRSLPVR
SHDN
CSP2
CSN2
CLKEN
1

Related parts for MAX17082GTL+

MAX17082GTL+ Summary of contents

Page 1

... Voltage-Positioned, Step-Down Converters Notebook/Desktop Computers Blade Servers Ordering Information PART TEMP RANGE MAX17021GTL+ -40°C to +105°C MAX17082GTL+ -40°C to +105°C -40°C to +105°C MAX17482GTL+ + Denotes a lead-free(Pb)/RoHS-compliant package Exposed pad. Quick-PWM is a trademark of Maxim Integrated Products, Inc. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’ ...

Page 2

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies ABSOLUTE MAXIMUM RATINGS V3P3 to GND ...........................................-0.3V to +6V CC DD, D0–D6 to GND..........................................................-0.3V to +6V PGDIN, DPRSLPVR, PSI to GND..............................-0.3V to +6V DPRSTP (MAX17021) to GND ..................................-0.3V ...

Page 3

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 10V 1.0000V FBAC, R CSN1 CSP2 CSN1 = ...

Page 4

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 10V 1.0000V FBAC, R CSN1 CSP2 CSN1 = ...

Page 5

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 10V 1.0000V FBAC, R CSN1 CSP2 CSN1 = ...

Page 6

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 10V 1.0000V FBAC, R CSN1 CSP2 CSN1 = ...

Page 7

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 10V 1.0000V FBAC, R CSN1 CSP2 CSN1 = ...

Page 8

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 10V 1.0000V FBAC, R CSN1 CSP2 CSN2 = ...

Page 9

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 10V 1.0000V FBAC, R CSN1 CSP2 CSN2 = ...

Page 10

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 10V 1.0000V FBAC, R CSN1 CSP2 CSN2 = ...

Page 11

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies (Circuit of Figure 12V OUTPUT VOLTAGE vs. LOAD CURRENT (V = 1.075V) OUT(HFM) 1.15 1.10 1.05 1.00 0. ...

Page 12

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies (Circuit of Figure 12V 0.8125V OUTPUT-VOLTAGE DISTRIBUTION 70 SAMPLE SIZE = 100 +85°C +25° OUTPUT VOLTAGE ...

Page 13

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies (Circuit of Figure 12V LOAD TRANSIENT RESPONSE (HFM MODE) MAX17021 toc16 50A 10A 1.075V 1V 25A 5A 5A 20μs/div 10A ...

Page 14

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies (Circuit of Figure 12V OUTPUT OVERVOLTAGE WAVEFORM 0.875V 100μs/div 500mV/div C. PWRGD, 5V/div OUT B. ...

Page 15

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies PIN NAME Valley Current-Limit Adjustment Input. The valley current-limit threshold voltage at CSP_ to CSN_ equals precisely 1/10 of the differential TIME to ILIM voltage over a 0.1V to 0.5V range ...

Page 16

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies PIN NAME Shutdown Control Input. This input cannot withstand the battery voltage. Connect to V operation. Connect to ground to put the IC into its 1μA max shutdown state. During startup, ...

Page 17

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies PIN NAME Phase-Good Current-Balance Open-Drain Output. Used to signal the system that one of the two phases either has a fault condition or is not matched with the other. Detection is ...

Page 18

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies PIN NAME Low-Voltage VID DAC Code Input. The D0–D6 inputs do not have internal pullups. These 1.0V logic 32–38 D0–D6 inputs are designed to interface directly with the CPU. The output ...

Page 19

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies 13 ON OFF (VRON) SHDN 31 DPRSTP 14 DPRSLPVR 15 PSI 1 PGDIN VID INPUTS VALLEY CURRENT ...

Page 20

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies Detailed Description Table 1 lists the component selection for standard applications. Table 2 lists component suppliers for the MAX17021/MAX17082/MAX17482/MAX17482. Free-Running, Constant-On-Time PWM Controller with Input Feed-Forward The Quick-PWM control architecture is ...

Page 21

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies Table 1. Component Selection for Standard Applications (continued) DESIGN IMVP-6+ SV PARAMETERS TIME-ILIM Resistance 10k (R1) ILIM-GND Resistance 59k (R2) FB Resistance (R ) 4.32k FB IMON Resistance N/A LX_-CSP_ Resistance ...

Page 22

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies 13 ON OFF (VRON) SHDN 14 DPRSLPVR 31 SLOW AGND 15 PSI 1 PGDIN VID INPUTS VALLEY ...

Page 23

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies THRM VRHOT (MAX17082/MAX17482) 0 CSP2 10x CSN2 CSP1 10x CSN1 ILIM TIME V CC REF (2.0V) GND D0–D6 R-TO-I DAC CONVERTER PGDIN SHDN FAULT FB GNDS x2 CSP_ ...

Page 24

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies Dual 180° Out-of-Phase Operation The two phases in the MAX17021/MAX17082/ MAX17482 operate 180° out-of-phase to minimize input and output filtering requirements, reduce electromagnetic interference (EMI), and improve efficiency. This effectively lowers ...

Page 25

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies difference between the master and slave current-sense signals. The summed output is internally connected to CCI, allowing adjustment of the integration time con- stant with a compensation network connected between CCI ...

Page 26

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies Use the worst-case inductance and R vided by the inductor manufacturer, adding some mar- gin for the inductance drop over temperature and load. To minimize the current-sense error due to the ...

Page 27

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies The MAX17021/MAX17082/MAX17482 integrate the dif- ference between the current-sense voltages and adjust the on-time of the secondary phase to maintain current balance. The current balance now relies on the accura- cy ...

Page 28

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies Differential Remote Sense The MAX17021/MAX17082/MAX17482 include differen- tial, remote-sense inputs to eliminate the effects of volt- age drops along the PCB traces and through the processor’s power pins. The feedback-sense node ...

Page 29

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies Table 3. Operating Mode Truth Table INPUTS DPRSTP SHDN PSI DPRSLPVR (SLOW) GND Rising High Low High (High) X High Low Low (High) Low ...

Page 30

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies Table 4. IMVP-6+/IMVP-6.5 Output-Voltage VID DAC Codes ...

Page 31

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies Table 4. IMVP-6+/IMVP-6.5 Output-Voltage VID DAC Codes (continued ...

Page 32

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies When the processor enters low-power deeper sleep mode, the IMVP-6 CPU sets the VID DAC code to a lower output voltage and drives DPRSLPVR high. The MAX17021/MAX17082/MAX17482 respond by slewing the ...

Page 33

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies • Standard C4 Deeper Sleep Exit: When exiting deeper sleep (DPRSLPVR pulled low) while the out- put voltage is regulating to the deeper sleep voltage, the MAX17021/MAX17082/MAX17482 immediately activate all enabled ...

Page 34

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies ACTIVE VID CPU CORE INTERNAL VOLTAGE TARGET VID (D0–D6) DPRSLPVR DPRSTP DO NOT CARE (DPRSLPVR DOMINATES STATE) PSI INTERNAL 1-PHASE SKIP (DH1 ACTIVE, DH2 = DL2 = FORCED LOW) PWM CONTROL ...

Page 35

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies ACTIVE VID CPU CORE INTERNAL VOLTAGE TARGET VID (D0–D6) DPRSLPVR DPRSTP PSI INTERNAL 1-PHASE SKIP (DH1 ACTIVE, DH2 = DL2 = FORCED LOW) PWM CONTROL NO PULSES: V DH1 DH2 PWRGD ...

Page 36

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies CPU FREQ CPU LOAD VID (D0–D6) CPU CORE VOLTAGE PSI INTERNAL 2-PHASE PWM PWM CONTROL PWRGD BLANK HIGH IMPEDANCE CLKEN PHASEGD Figure 8. PSI Transition When PSI is pulled low, the ...

Page 37

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies Light-Load Pulse-Skipping Operation When DPRSLPVR is pulled high, the MAX17021/ MAX17082/MAX17482 operate with a single-phase pulse-skipping mode. The pulse-skipping mode enables the driver’s zero-crossing comparator, so the controller pulls DL1 low ...

Page 38

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies Power-Up Sequence (POR, UVLO) The MAX17021/MAX17082/MAX17482 are enabled when SHDN is driven high (Figure 10). The internal ref- erence powers up first. Once the reference exceeds its UVLO threshold, the internal ...

Page 39

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies When SHDN goes low, the MAX17021/MAX17082/ MAX17482 enter low-power shutdown mode. PWRGD is pulled low immediately, and the output voltage ramps down at 1/8 the slew rate set by R TIME ...

Page 40

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies pulse-skipping operation (DPRSLPVR = high), the OVP threshold is set to default. When the OVP circuit detects an overvoltage fault, the MAX17021/MAX17082 immediately force DL1 high and pull DH1 and DH2 ...

Page 41

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies (R )* BST_ BST_ C BST_ DH_ LX_ C BYP V DD DL_ ( PGND (R )* OPTIONAL—THE RESISTOR LOWERS EMI BY DECREASING THE BST_ SWITCHING NODE RISE TIME. ...

Page 42

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies Inductor Selection The switching frequency and operating point (% ripple current or LIR) determine the inductor value as follows: ⎛ OUT = η ⎜ L TOTAL ⎝ ...

Page 43

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies When using low-capacity ceramic filter capacitors, capacitor size is usually determined by the capacity needed to prevent V and V SAG problems during load transients. Generally, once enough capacitance is added ...

Page 44

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies For most applications, nontantalum chemistries (ceram- ic, aluminum, or OS-CON) are preferred due to their resistance to inrush surge currents typical of systems with a mechanical switch or connector in series ...

Page 45

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies the current limit and cause the fault latch to trip. To pro- tect against this possibility, you can over design the cir- cuit to tolerate: ⎛ = η ⎝ ...

Page 46

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies Minimum Input-Voltage Requirements and Dropout Performance The output-voltage-adjustable range for continuous- conduction operation is restricted by the nonadjustable minimum off-time one-shot and the number of phases. For best dropout performance, use ...

Page 47

Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies • Keep the high-current, gate-driver traces (DL_, DH_, LX_, and BST_) short and wide to minimize trace resistance and inductance. This is essential for high-power MOSFETs that require low-imped- ance gate ...

Page 48

... 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. 48 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...

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