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19-4438; Rev 0; 1/09
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Dual-Phase, Quick-PWM Controller
for IMVP6+ CPU Core Power Supplies
General Description
The MAX17410 is a 2-/1-phase interleaved Quick-
PWM™ step-down VID power-supply controller for
notebook IMVP6+ CPUs. True out-of-phase operation
reduces input ripple current requirements and output
voltage ripple while easing component selection and
layout difficulties. The Quick-PWM control scheme 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.
The MAX17410 is intended for two different CPU core
applications: either bucking down the battery directly to
create the core voltage, or bucking down the +5V sys-
tem supply. The single-stage conversion method allows
this device to directly step down high-voltage batteries
for the highest possible efficiency. Alternatively, 2-stage
conversion (stepping down the +5V system supply
instead of the battery) at higher switching frequency
provides the minimum possible physical size.
A slew-rate controller allows controlled transitions
between VID codes. A thermistor-based temperature
sensor provides programmable thermal protection. A
power monitor provides a buffered analog voltage out-
put proportional to the power delivered to the load.
The MAX17410 is available in a 48-pin, 7mm x 7mm
TQFN package.
Applications
IMVP6+ Core Supply
Multiphase CPU Core Supply
Voltage-Positioned, Step-Down Converters
Notebook/Desktop Computers
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX17410GTM+ -40°C to +105°C
48 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Features
o Dual-/Single-Phase Interleaved Quick-PWM
Controller
o ±0.5% VOUT Accuracy Over Line, Load, and
Temperature
o 7-Bit IMVP6+ DAC
o Dynamic Phase Selection Optimizes Active/Sleep
Efficiency
o Transient Phase Overlap Reduces Output
Capacitance
o Active Voltage Positioning with Adjustable Gain
o Accurate Lossless Current Balance
o Accurate Droop and Current Limit
o Remote Output and Ground Sense
o Adjustable Output Slew-Rate Control
o Power-Good Window Comparator
o Power Monitor
o Programmable Thermal-Fault Protection
o Phase Fault Output (PHASEGD)
o Drives Large Synchronous Rectifier FETs
o 4.5V to 26V Battery Input Range
o Output Overvoltage and Undervoltage Protection
o Soft-Startup and Soft-Shutdown
o Integrated Boost Switches
o Low-Profile 7mm x 7mm, 48-Pin TQFN Package
Pin Configuration
TOP VIEW
36 35 34 33 32 31 30 29 28 27 26 25
D0 37
D1 38
D2 39
D3 40
D4 41
D5 42
D6 43
SHDN 44
DPRSLPVR 45
DPRSTP 46
CLKEN 47
V3P3 48
MAX17410
24 CSP1
23 CSP2
22 VCC
21 GND
20 IN
19 CSPAVG
18 CSN1
17 CSN2
16 CCI
15 GNDS
14 OUTS
13 ILIM
1 2 3 4 5 6 7 8 9 10 11 12
Quick-PWM is a trademark of Maxim Integrated Products, Inc.
THIN QFN
________________________________________________________________ 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.

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Dual-Phase, Quick-PWM Controller
for IMVP6+ CPU Core Power Supplies
ABSOLUTE MAXIMUM RATINGS
VCC, VDD, V3P3 to GND ...........................................-0.3V to +6V
D0–D6, PSI, DPRSLPVR, DPRSTP to GND ..............-0.3V to +6V
CSPAVG, CSP_, CSN_, ILIM to GND .......................-0.3V to +6V
PWRGD, PHASEGD, VRHOT to GND ......................-0.3V to +6V
FB, OUTS, CCI, TIME, PMON to GND........-0.3V to (VCC + 0.3V)
PGDIN, NTC, THRM to GND ......................-0.3V to (VCC + 0.3V)
CLKEN to GND ..........................................-0.3V to (V3P3 + 0.3V)
VPS to OUTS .........................................................-0.3V to +0.3V
SHDN to GND (Note 1)...........................................-0.3V to +30V
DL_ to GND ................................................-0.3V to (VDD + 0.3V)
BST_ to VDD............................................................-0.3V to +30V
LX_ to BST_ ..............................................................-6V to +0.3V
DH_ to LX_ ...............................................-0.3V to (VBST - +0.3V)
Continuous Power Dissipation (48-pin, 7mm x 7mm TQFN)
Up to +70°C ..............................................................2222mW
Derating Above +70°C ..........................................27.8mW/°C
Operating Temperature Range .........................-40°C to +105°C
Junction Temperature ......................................................+150°C
IN to GND ...............................................................-0.3V to +30V
GNDS, SGND, PGND_ to GND .............................-0.3V to +0.3V
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: SHDN may be forced to 12V for the purpose of debugging prototype breadboards using the no-fault test mode.
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 1, VIN = 10V, VCC = VDD = VSHDN = VPGDIN = VPSI = VILIM = 5V, VV3P3 = 3.3V, VDPRSLPVR = VDPRSTP = VGNDS =
VPGND_ = 0, CSPAVG = CSP_ = CSN_ = OUTS = 1.0000V, RFB = 3.57kΩ from FB to VPS, [D6–D0] = [0101000]; TA = 0°C to +85°C,
unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
PWM CONTROLLER
Input Voltage Range
SYMBOL
VCC, VDD
V3P3
IN
CONDITIONS
MIN TYP MAX UNITS
4.5 5.5
3.0 3.6 V
4.5 26
DC Output Voltage Accuracy
VOUT
Measured at FB with
respect to GNDS,
includes load
regulation error
(Note 2)
DAC codes from
0.8125V to 1.5000V
DAC codes from
0.3750V to 0.8000V
DAC codes from
0 to 0.3625V
-0.5
-7
-20
+0.5
+7
+20
%
mV
Boot Voltage
Line Regulation Error
OUTS Input Bias Current
OUTS-to-VPS Resistance
SGND-to-AGND Resistance
GNDS Input Range
GNDS Gain
GNDS Input Bias Current
TIME Regulation Voltage
VBOOT
VCC = 4.5V to 5.5V, VIN = 4.5V to 26V
VPS floating, TA = +25°C
AGNDS
IGNDS
VTIME
VOUT/VGNDS
V(OUTS, GNDS) = 1.0V
RTIME = 71.5k
1.192
-0.1
3.5
-200
0.97
-15
1.985
1.200
0.1
10
2.5
1.00
-10
2.000
1.209
+0.1
40
+200
1.03
-4
2.015
V
%
μA


mV
V/V
μA
V
2 _______________________________________________________________________________________

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Dual-Phase, Quick-PWM Controller
for IMVP6+ CPU Core Power Supplies
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, VIN = 10V, VCC = VDD = VSHDN = VPGDIN = VPSI = VILIM = 5V, VV3P3 = 3.3V, VDPRSLPVR = VDPRSTP = VGNDS =
VPGND_ = 0, CSPAVG = CSP_ = CSN_ = OUTS = 1.0000V, RFB = 3.57kΩ from FB to VPS, [D6–D0] = [0101000]; TA = 0°C to +85°C,
unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
RTIME = 71.5k (12.5mV/μs nominal)
RTIME = 35.7k (25mV/μs nominal) to
178k (5mV/μs nominal)
-10
-15
+10
+15
TIME Slew-Rate Accuracy
Soft-start and soft-shutdown: RTIME =
35.7k (3.125mV/μs nominal) to 178k
(0.625mV/μs nominal)
-16
+30 %
Slow: VDPRSTP = VDPRSLPVR = 5V,
1/4 normal slew rate, RTIME = 35.7k
(6.25mV/μs nominal) to 178k (1.25mV/μs
nominal)
-12
+25
On-Time Accuracy
VIN = 10V, VFB = 1.0V, VCCI = (1.0V +
tON VDIODE), measured at DH_, 300kHz per
phase nominal (Note 3)
300 333 366
ns
Minimum Off-Time
BIAS CURRENTS
tOFF(MIN) Measured at DH_ (Note 3)
300 375
ns
Quiescent Supply Current (VCC)
ICC
Measured at VCC, VDPRSLPVR = 5V, FB
forced above the regulation point
3 6 mA
Quiescent Supply Current (VDD)
Quiescent Supply Current (V3P3)
Quiescent Supply Current (IN)
Shutdown Supply Current (VCC)
Shutdown Supply Current (VDD)
Shutdown Supply Current (V3P3)
Shutdown Supply Current (IN)
FAULT PROTECTION
Output Overvoltage-
Protection Threshold
IDD
I3P3
IIN
ICC,SDN
IDD,SDN
I3P3,SDN
IIN,SDN
Measured at VDD, VDPRSLPVR = 0, FB forced
above the regulation point, TA = +25°C
Measured at V3P3, FB forced within the
CLKEN power-good window, TA = +25°C
Measured at IN, VIN = 10V
Measured at VCC, SHDN = GND, TA = +25°C
Measured at VDD, SHDN = GND, TA = +25°C
Measured at V3P3, SHDN = GND, TA = +25°C
Measured at IN, VIN = 26V, SHDN = GND,
VCC = 0V or 5V, TA = +25°C
VOVP
Skip mode after output reaches the
regulation voltage or PWM mode, measured
at FB with respect to the voltage target set
by the VID code (see Table 4)
Soft-start, soft-shutdown, skip mode, and
output has not reached the regulation
voltage; measured at FB
Minimum OVP threshold; measured at FB
250
1.75
0.02
0.01
15
0.01
0.01
0.01
0.01
300
1.80
0.8
1
1
25
1
1
1
0.1
350
1.85
μA
μA
μA
μA
μA
μA
μA
mV
V
Output Overvoltage-
Propagation Delay
tOVP FB forced 25mV above trip threshold
10 μs
_______________________________________________________________________________________ 3

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Dual-Phase, Quick-PWM Controller
for IMVP6+ CPU Core Power Supplies
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, VIN = 10V, VCC = VDD = VSHDN = VPGDIN = VPSI = VILIM = 5V, VV3P3 = 3.3V, VDPRSLPVR = VDPRSTP = VGNDS =
VPGND_ = 0, CSPAVG = CSP_ = CSN_ = OUTS = 1.0000V, RFB = 3.57kΩ from FB to VPS, [D6–D0] = [0101000]; TA = 0°C to +85°C,
unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Output Undervoltage-
Protection Threshold
VUVP
Measured at FB with respect to the voltage -450
target set by the VID code; see Table 4
-400
-350
mV
Output Undervoltage-
Propagation Delay
tUVP FB forced 25mV below trip threshold
10 μs
CLKEN Startup Delay and
Boot Time Period
tBOOT
Measured from the time when FB reaches
the boot target voltage (Note 2)
20
60 100
μs
PWRGD Startup Delay
CLKEN and PWRGD Threshold
CLKEN and PWRGD Delay
Measured at startup from the time when
CLKEN goes low
Measured at FB with
respect to the voltage
target set by the VID
code; see Table 4,
20mV hysteresis (typ)
Lower threshold,
falling edge
(undervoltage)
Upper threshold,
rising edge
(overvoltage)
FB forced 25mV outside the PWRGD trip
threshold s
3 6.5 10
-350 -300 -250
+150 +200 +250
10
ms
mV
μs
PHASEGD Delay
CLKEN, PWRGD, and PHASEGD
Transition Blanking Time
(VID Transitions)
PHASEGD Transition Blanking
Time (Phase 2 Enable Transitions)
CLKEN Output Low Voltage
CLKEN Output High Voltage
tBLANK
V(CCI, FB) forced 25mV outside trip
threshold s
Measured from the time when FB reaches
the target voltage (Note 2)
Number of DH2 pulses for which PHASEGD
is blanked after phase 2 is enabled
Low state, ISINK = 3mA
High state, ISOURCE = 3mA
V3P3 -
0.4
10
20
32
μs
μs
Pulses
0.4 V
V
PWRGD, PHASEGD Output
Low Voltage
Low state, ISINK = 3mA
0.4 V
PWRGD, PHASEGD Leakage
Current
CSN_ Pulldown Resistances
in Shutdown
High-impedance state; PWRGD, PHASEGD
forced to 5V; TA = +25°C
SHDN = 0, measured after soft-shutdown
completed (DL = low)
1 μA
10 
VCC Undervoltage-Lockout
Threshold
THERMAL PROTECTION
VUVLO(VCC)
Rising edge, 65mV typical hysteresis,
controller disabled below this level
4.05 4.27 4.48
V
THRM, NTC Pullup Current
ITHRM, INTC VTHRM = VNTC = 1V
40 50 60 μA
Ratio of NTC Pullup Current to
THRM Pullup Current
INTC/ITHRM VTHRM = VNTC = 1V
0.995 1 1.025 μA/μA
4 _______________________________________________________________________________________

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Dual-Phase, Quick-PWM Controller
for IMVP6+ CPU Core Power Supplies
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, VIN = 10V, VCC = VDD = VSHDN = VPGDIN = VPSI = VILIM = 5V, VV3P3 = 3.3V, VDPRSLPVR = VDPRSTP = VGNDS =
VPGND_ = 0, CSPAVG = CSP_ = CSN_ = OUTS = 1.0000V, RFB = 3.57kΩ from FB to VPS, [D6–D0] = [0101000]; TA = 0°C to +85°C,
unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
VRHOT Trip Threshold
Measured at NTC with respect to THRM,
VTHRM = 1V, falling edge; typical
hysteresis = 100mV
VRHOT Delay
tVRHOT
VNTC forced 25mV below VTHRM, VTHRM =
1V, falling edge
VRHOT Output On-Resistance RON(VRHOT) Low state
VRHOT Leakage Current
High-impedance state, VRHOT forced to 5V,
TA = +25°C
Thermal-Shutdown Threshold
TSHDN Typical hysteresis = 15°C
VALLEY CURRENT LIMIT, DROOP, CURRENT BALANCE, AND CURRENT MONITOR
Current-Limit Threshold Voltage
(Positive)
VLIMIT VCSP_ - VCSN_
VTIME - VILIM = 100mV
VTIME - VILIM = 500mV
ILIM = VCC
Current-Limit Threshold Voltage
(Negative) Accuracy
VLIMIT(NEG) VCSP_ - VCSN_, nominally -125% of VLIMIT
MIN TYP MAX UNITS
-12 +12 mV
10
2
+160
8
1
7 10 13
45 50 55
20 22.5 25
-4 +4
μs

μA
°C
mV
mV
Current-Limit Threshold Voltage
(Zero Crossing)
VZERO VAGND - VLX_, DPRSLPVR = 5V
1 mV
CSPAVG, CSP_, CSN_
Common-Mode Input Range
0 2V
Phase 2 Disable Threshold
Measured at CSP2
3
VCC - VCC -
1 0.4
V
CSPAVG, CSP_, CSN_
Input Current
ICSPAVG,
ICSP_, ICSN_
TA = +25°C
ILIM Input Current
Droop Amplifier Offset
IILIM
TA = +25°C
[VCSPAVG - (VCSN1 +
VCSN2)/2] at IFB = 0
TA = +25°C
TA = 0°C to +85°C
Droop Amplifier
Transconductance
Power Monitor Output Voltage for
Typical HFM Conditions
Gm(FB)
VPMON
IFB/[VCSPAVG - (VCSN1 + VCSN2)/2], VFB =
VCSN_ = 0.45V to 1.5V
V(OUTS, GNDS) =
1.200V, IPMON =
0μA
[VCSPAVG - (VCSN1 +
VCSN2)/2] = 15mV,
V(TIME, ILIM) = 225mV
[VCSPAVG - (VCSN1 +
VCSN2)/2] = 15mV,
V(TIME, ILIM) = 500mV
Power Monitor Gain Referred to
Output Voltage V(OUTS, GNDS)
APMON/ [VCSPAVG - (VCSN1 + VCSN2)/2] = 15mV,
VOUT V(TIME, ILIM) = 225mV, IPMON = 0μA
Power Monitor Gain Referred to
[VCSPAVG - (VCSN1 + VCSN2)/2]
APMON/VCS
V(CSN, GNDS) = 1.200V, V(TIME, ILIM) =
225mV, IPMON = 0μA
-0.2 +0.2
-0.1
-0.5
-0.75
+0.1
+0.5
+0.75
1.180 1.2 1.216
1.65 1.7 1.743
0.738 0.765 0.792
1.375 1.4167 1.452
104 113.33 123
μA
μA
mV
mS
V
V/V
V/V
_______________________________________________________________________________________ 5