MAX17582GTM+ Maxim Integrated Products, MAX17582GTM+ Datasheet

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MAX17582GTM+

Manufacturer Part Number
MAX17582GTM+
Description
IC PWM CTRLR STP-DN DL 48TQFN
Manufacturer
Maxim Integrated Products
Series
Quick-PWM™r
Datasheet

Specifications of MAX17582GTM+

Applications
Controller, Intel IMVP-6.5™
Voltage - Input
4.5 ~ 5.5 V
Number Of Outputs
1
Voltage - Output
0.01 ~ 1.5 V
Operating Temperature
-40°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
48-TQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX17582 is a 2-/1-phase-interleaved Quick-
PWM™ step-down VID power-supply controller for
notebook CPUs. True out-of-phase operation reduces
input-ripple-current requirements and output-voltage
ripple, while easing component selection and layout dif-
ficulties. The Quick-PWM control provides instanta-
neous response to fast load-current steps. Active
voltage positioning reduces power dissipation and bulk
output capacitance requirements and allows ideal posi-
tioning compensation for tantalum, polymer, or ceramic
bulk output capacitors.
A slew-rate controller allows controlled transitions among
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. The MAX17582 includes output undervolt-
age and thermal protection. When any of these protec-
tion features detect a fault, the controller shuts down. A
voltage-regulator power-OK (PWRGD) output indicates
the output is in regulation. Additionally, the MAX17582
features true differential current sense and a phase-good
(PHASEGD) output that indicates a phase imbalance
fault condition.
The MAX17582 implements the Intel IMVP-6.5 VID code
set. The MAX17582 is available in a 6mm x 6mm,
48-pin TQFN package.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
Quick-PWM is a trademark of Maxim Integrated Products, Inc.
19-4821; Rev 0; 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.
MAX17582GTM+
IMVP-6.5 Core Supply
Multiphase CPU Core Supply
Voltage-Positioned, Step-Down Converters
Notebook/Desktop Computers
Blade Servers
PART
________________________________________________________________ Maxim Integrated Products
Ordering Information
-40°C to +105°C
TEMP RANGE
General Description
Dual-Phase, Quick-PWM Controller for
IMVP-6.5 CPU Core Power Supplies
Applications
PIN-PACKAGE
48 TQFN-EP*
o Single-/Dual-Phase, Quick-PWM Controller
o ±8mV 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 IMVP-6.5 Power Sequencing and Timing
o Soft-Startup and Soft-Shutdown
*EXPOSED PAD. CONNECTED TO GND.
TOP VIEW
Temperature
Efficiency
Capacitance
Frequency
Outputs
Compliant
SLOW
CSN1
CSP1
GND
N.C.
D0
D1
D2
D3
D4
D5
D6
37
38
39
40
41
42
43
44
45
46
47
48
OUT
36 35 34 33 32 31 30 29 28 27 26 25
1
+
2
Accuracy Over Line, Load, and
3
4
(6mm x 6mm)
5
THIN QFN
MAX17582
6
Pin Configuration
7
8
9
10 11 12
*EP
GND
Features
24
23
22
21
20
19
18
17
16
15
14
13
N.C.
PHASEGD
PWRGD
CLKEN
V3P3
TON
PSI
DPRSLPVR
SHDN
CSP2
GND
CSN2
1

Related parts for MAX17582GTM+

MAX17582GTM+ Summary of contents

Page 1

... Voltage-Positioned, Step-Down Converters Notebook/Desktop Computers Blade Servers Ordering Information PART TEMP RANGE MAX17582GTM+ -40°C to +105°C + Denotes a lead(Pb)-free/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 Controller for 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 SLOW to GND ..........................................................-0.3V to ...

Page 3

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

Page 4

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

Page 5

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

Page 6

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

Page 7

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (Circuit of Figure 10V 1.0000V FBAC, R CSN1 CSP2 CSN2 -40°C to ...

Page 8

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 10V 1.0000V FBAC, R CSN1 CSP2 CSN2 -40°C ...

Page 9

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 10V 1.0000V FBAC, R CSN1 CSP2 CSN2 -40°C ...

Page 10

Dual-Phase, Quick-PWM Controller for 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 11

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies 0.8125V OUTPUT-VOLTAGE DISTRIBUTION 70 +85°C SAMPLE SIZE = 100 +25° OUTPUT VOLTAGE (V) SOFT-START WAVEFORM (UP TO CLKEN) MAX17582 toc13 ...

Page 12

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies (Circuit of Figure 12V LOAD-TRANSIENT RESPONSE (HFM MODE) MAX17582 toc16 50A 10A 1.075V 1V 25A 5A 5A 20μs/div 10A TO ...

Page 13

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies PIN NAME System Power-Good Logic Input. PGDIN indicates the power status of other system rails and is used for power-supply sequencing. After power-up to the boot voltage, the output voltage remains ...

Page 14

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies PIN NAME Remote Feedback-Sense Input. Normally shorted to FBAC and connected to the VCC_SENSE pin of the 9 FB CPU socket through the load-line gain resistor (see the FBAC pin description). ...

Page 15

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies PIN NAME Power-State Indicator Input. DPRSLPVR and 18 of active phases as shown in the truth table included under the Switching Frequency Setting Input. An external resistor between the input power ...

Page 16

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies PIN NAME Low-Side Gate-Driver Output for Phase 1. DL1 swings from GND DL1 shutdown or in skip mode after detecting an inductor current zero crossing. 33 PGND1 Power ...

Page 17

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies Table 1. Component Selection for Standard Applications DESIGN PARAMETERS CIRCUIT Input-Voltage Range Maximum Load Current (TDC Current) Transient Load Current Load Line COMPONENTS TON Resistance (R ) TON Inductance (L) High-Side ...

Page 18

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies 16 ON OFF (VRON) SHDN 17 DPRSLPVR 38 SLOW AGND 18 PSI 1 PGDIN VID INPUTS VALLEY ...

Page 19

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies THRM VRHOT 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_ FBAC ...

Page 20

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies Dual 180° Out-of-Phase Operation The two phases in the MAX17582 operate 180° out-of- phase to minimize input and output filtering requirements, reduce electromagnetic interference (EMI), and improve efficiency. This effectively lowers ...

Page 21

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies CCI and FB. The resulting compensation current and voltage are determined by the following equations CCI m CSP1 CSN1 ...

Page 22

Dual-Phase, Quick-PWM Controller for 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 23

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies The MAX17582 integrates the difference between the current-sense voltages and adjusts the on-time of the secondary phase to maintain current balance. The cur- rent balance now relies on the accuracy of ...

Page 24

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies Differential Remote Sense The MAX17582 includes differential, remote-sense inputs to eliminate the effects of voltage drops along the PCB traces and through the processor’s power pins. The feedback-sense node connects to ...

Page 25

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies Table 3. Operating Mode Truth Table INPUTS SHDN SLOW PSI DPRSLPVR GND Rising High High Low High High High Low Low High High High X ...

Page 26

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

Page 27

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

Page 28

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies When the processor enters low-power deeper sleep mode, the CPU sets the VID DAC code to a lower out- put voltage and drives DPRSLPVR high. The MAX17582 responds by slewing the ...

Page 29

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies CPU CORE VOLTAGE VID (D0–D6) DPRSLPVR PSI INTERNAL 1-PHASE SKIP (DH1 ACTIVE, DH2 = DL2 = FORCED LOW) PWM CONTROL DH1 DH2 BLANK HIGH IMPEDANCE PWRGD CLKEN BLANK LOW PHASEGD Figure ...

Page 30

Dual-Phase, Quick-PWM Controller for 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 MAX17582 immediately activates all enabled ...

Page 31

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies When PSI is pulled low, the MAX17582 immediately dis- ables phase 2 (DH2 and DL2 forced low), blanks PHASEGD high impedance, and enters single-phase PWM operation (see Figure 6). When PSI ...

Page 32

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies Forced-PWM Operation (Normal Mode) During soft-shutdown and normal operation—when the CPU is actively running (DPRSLPVR = low)—the MAX17582 operates with the low-noise, forced-PWM control scheme. Forced-PWM operation disables the zero-crossing comparators ...

Page 33

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies Power-Up Sequence (POR, UVLO) The MAX17582 is enabled when SHDN is driven high (Figure 8). The internal reference powers up first. Once the reference exceeds its UVLO threshold, the internal analog ...

Page 34

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies When SHDN goes low, the MAX17582 enters low-power shutdown mode. PWRGD is pulled low immediately, and the output voltage ramps down at 1/8 the slew rate set TIME ...

Page 35

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies Thermal-Fault Protection The MAX17582 features a thermal-fault-protection cir- cuit. When the junction temperature rises above +160°C, a thermal sensor sets the fault latch and acti- vates the soft-shutdown sequence. Once the ...

Page 36

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies Alternatively, shoot-through currents can be caused by a combination of fast high-side MOSFETs and slow low- side MOSFETs. If the turn-off delay time of the low-side MOSFETs is too long, the ...

Page 37

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies ⎡ ⎛ OUT SW Δ ⎢ ⎝ ⎜ LOAD(MAX) V ⎣ SAG ⎡ ⎛ ...

Page 38

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies For a standard 300kHz application, the ESR zero fre- quency must be well below 95kHz, preferably below 50kHz. Tantalum, Sanyo POSCAP, and Panasonic SP capacitors in widespread use at the time ...

Page 39

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies Choose a low-side MOSFET that has the lowest possible on-resistance (R ), comes in a moderate-sized DS(ON) package (i.e., one or two 8-pin SOs, DPAK and is reasonably priced. ...

Page 40

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies side. According to the manufacturer’s data sheet, a sin- gle IRF7811W has a maximum gate charge of 24nC (V = 5V). Using the above equation, the required GS boost capacitance would ...

Page 41

Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies If the calculated V is greater than the required IN(MIN) minimum input voltage, then reduce the operating fre- quency or add output capacitance to obtain an accept- able ...

Page 42

... 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. 42 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products ...

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