19-5742; Rev 1; 7/11
TION KIT
EVALUA BLE
AVAILA
Dual-Output, 3-/2-/1-Phase + 2-/1-Phase
Quick-PWM Controllers for VR12/IMVP7
General Description
Features
S
Intel VR12/IMVP-7-Compliant Serial Interface
S
3-/2-/1-Phase Quick-PWM CPU Core Regulator
MAX17411/MAX17511/MAX17511C/MAX17511N/MAX17511T
The MAX17411/MAX17511/MAX17511C/MAX17511N/
MAX17511T are dual-output, step-down, constant on-time
Quick-PWMK controllers for VR12/IMVP-7 CPU core sup-
plies. The controllers consist of two high-current switching
power supplies for CPU and GFX cores. The CPU regulator
(regulator A) is a three-phase constant on-time architecture.
The GFX regulator (regulator B) is also constant on-time
architecture. The MAX17411 supports 2-phase operation
and the MAX17511/MAX17511C/MAX17511N/MAX17511T
support 1-phase operation. The MAX17411/MAX17511/
MAX17511C/MAX17511N/MAX17511T include two internal
drivers on regulator A and one internal driver on regula-
tor B. External drivers such as the MAX17491 enable the
additional phases.
Both regulator A and regulator B include output voltage
sensing and accurate load-line gain. Switching frequen-
cies are programmable from 200kHz to 600kHz per
phase. Output overvoltage protection (OVP, MAX17411/
MAX17511/MAX17511C/MAX17511N), undervoltage pro-
tection (UVP), and thermal protection ensure effective and
reliable operation. When any of these protection features
detect a fault, the controller shuts down both outputs.
The multiphase regulators include transient-phase over-
lap and active overshoot suppression, which speed up
the response time and reduce the total output capaci-
tance. The CPU and GFX outputs are controlled inde-
pendently by writing the appropriate data into a function-
mapped register file. VID code transitions and soft-start
are enabled with a precision slew-rate control circuit. The
SVID interface also allows each regulator to be individu-
ally set into a low-power, single-phase, pulse-skipping
state to optimize efficiency. The MAX17411 is available in
a 48-pin, 6mm x 6mm, TQFN package. The MAX17511/
MAX17511C/MAX17511N/MAX17511T are available in a
40-pin, 5mm
O
5mm, TQFN lead-free package.
Two Internal Drivers and One External Driver
Transient-Phase Overlap Mode
Dynamic Phase Selection
S
2-/1-Phase Quick-PWM GFX Regulator
One Internal and One External Driver
S
Active Overshoot Suppression
S
8-Bit VR12/IMVP-7 DAC
S
±0.5% V
OUT
Accuracy Over Line, Load, and
Temperature
Gain
S
Active Voltage Positioning with Programmable
S
Accurate Lossless Current Balance
S
Accurate Droop and Current Limit
S
Remote Output and Ground Sense
S
Power-Good Window Comparators (POKA and
POKB)
S
4.5V to 24V Battery-Input Voltage Range
S
Programmable 200kHz to 600kHz Switching
Frequency
S
External Thermal-Fault Detection Output
(VR_HOT#)
S
Overvoltage (MAX17411/MAX17511/MAX17511C/
MAX17511N), Undervoltage, and Thermal-Fault
Protection
S
Slew-Rate Controlled Soft-Start
S
Passive Soft-Shutdown (20I Discharge Switches)
S
Integrated Boost Switches
S
Low-Profile, 48-Lead/40-Lead TQFN Packages
Applications
VR12/IMVP-7 CPU Core Power Supplies
Notebooks/Desktops/Servers
Quick PWM is a trademark of Maxim Integrated Products, Inc.
Ordering Information
PART
MAX17411GTM+
MAX17511GTL+
TEMP RANGE
-40NC to +105NC
-40NC to +105NC
PIN-PACKAGE
48 TQFN-EP*
40 TQFN-EP*
FEATURE
3-/2-/1-Phase + 2-/1-Phase
3-/2-/1-Phase + 1-Phase
Ordering Information continued on last page.
+Denotes
a lead(Pb)-free/RoHS-compliant package.
*EP
= Exposed pad.
_______________________________________________________________
Maxim Integrated Products
1
For information on other Maxim products, visit Maxim’s website at www.maxim-ic.com.
Dual-Output, 3-/2-/1-Phase + 2-/1-Phase
Quick-PWM Controllers for VR12/IMVP7
MAX17411/MAX17511/MAX17511C/MAX17511N/MAX17511T
ABSOLUTE MAXIMUM RATINGS
V
CC
, V
DDA
, V
DDB
to GND (AGND) .........................-0.3V to +6V
VDIO, CLK, ALERT# to GND (AGND) .....................-0.3V to +6V
CSPAAVE, CSPBAVE, CSP_,
CSN_ to GND (AGND) ........................................-0.3V to +6V
FBA, FBB to GND (AGND) ....................... -0.3V to (V
CC
+ 0.3V)
SR, IMAX_ to GND (AGND) .................... -0.3V to (V
CC
+ 0.3V)
POKA, POKB, EN to GND (AGND) .........................-0.3V to +6V
VR_HOT# to GND (AGND) ......................................-0.3V to +6V
THERMA, THERMB to GND (AGND) ....... -0.3V to (V
CC
+ 0.3V)
GNDSA, GNDSB to GND (AGND) .......................-0.3V to +0.3V
TON to GND ..........................................................-0.3V to +26V
DRVPWMA to GND (AGND) .................. -0.3V to (V
DDA
+ 0.3V)
DRVPWMB to GND (AGND) .................. -0.3V to (V
DDB
+ 0.3V)
DLA_ to GND (PGND) ............................ -0.3V to (V
DDA
+ 0.3V)
DLB to GND (PGND) .............................. -0.3V to (V
DDB
+ 0.3V)
BSTA_ to V
DDA
......................................................-0.3V to +26V
BSTB to V
DDB
.......................................................-0.3V to +26V
LXA_ to BSTA_ ........................................................-6V to +0.3V
LXB to BSTB ............................................................-6V to +0.3V
LX_ to GND (AGND) ................................................-6V to +26V
DHA_ to LXA_.......................................-0.3V to (V
BSTA_
+ 0.3V)
DHB to LXB ........................................... -0.3V to (V
BSTB
+ 0.3V)
Continuous Power Dissipation (T
A
= +70NC)
40-Pin TQFN (derate 35.7mW/NC above +70NC) ...2857.1mW
48-Pin TQFN (derate 37mW/NC above +70NC) .........2963mW
Operating Temperature Range ........................ -40NC to +105NC
Junction Temperature .....................................................+150NC
Storage Temperature Range............................ -65NC to +165NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
PACKAGE THERMAL CHARACTERISTICS (Note 1)
40 TQFN
Junction-to-Ambient Thermal Resistance (q
JA
) ..........28°C/W
Junction-to-Case Thermal Resistance (q
JC
) ..............1.6°C/W
48 TQFN
Junction-to-Ambient Thermal Resistance (q
JA
) ..........27°C/W
Junction-to-Case Thermal Resistance (q
JC
) ..............1.3°C/W
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to
www.maxim-ic.com/thermal-tutorial.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion 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
(Circuits of Figures 1 and 2. V
IN
= 10V, V
CC
= V
DDA
= V
DDB
= 5V, EN = V
CC
, V
GNDS_
= 0V, V
FB_
= V
CSP_AVE
= V
CSP_
= V
CSN_
= 1V; [SerialVID = 1.00, FPWM MODE];
T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25NC. All devices
100% tested at T
A
= +25NC. Limits over temperature guaranteed by design.)
PARAMETER
PWM CONTROLLER
Input Voltage Range
V
CC
, V
DDA
, V
DDB
Measured at FB_ with
respect to GNDS_;
includes load regulation
error (Note 2)
DAC codes from
1.000V to 1.520V
DAC codes from
0.800V to 0.995V
DAC codes from
0.250V to 0.795V
4.5
-0.5
-5
-8
0.1
-15
5
-200
A
GNDS
DV
OUT
/DV
GNDS_
T
A
= +25NC
EN = GND, V
IN
= 24V, V
CC
= 0V, T
A
= +25NC
V
BOOT
MAX17511N only, Reg A and Reg B
MAX17511C only, Reg B only
1.094
0.895
0.97
-0.5
0.01
1.100
0.900
1.00
-10
10
-5
15
+200
1.03
+0.5
0.1
1.106
0.905
5.5
+0.5
+5
mV
+8
mV
mV
mV
V/V
FA
FA
V
V
%
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DC Output Voltage
Accuracy
Line Regulation Error
V
SETTLED
Bit Accuracy
GNDS_ Input Range
GNDS_ Gain
GNDS_ Input Bias Current
TON Shutdown Current
Boot Voltage
V
CC
= 4.5V to 5.5V, V
IN
= 4.5V to 24V
Upward transitions
Downward transitions
2
______________________________________________________________________________________
Dual-Output, 3-/2-/1-Phase + 2-/1-Phase
Quick-PWM Controllers for VR12/IMVP7
ELECTRICAL CHARACTERISTICS (continued)
(Circuits of Figures 1 and 2. V
IN
= 10V, V
CC
= V
DDA
= V
DDB
= 5V, EN = V
CC
, V
GNDS_
= 0V, V
FB_
= V
CSP_AVE
= V
CSP_
= V
CSN_
= 1V; [SerialVID = 1.00, FPWM MODE];
T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25NC. All devices
100% tested at T
A
= +25NC. Limits over temperature guaranteed by design.)
PARAMETER
SYMBOL
CONDITIONS
Measured at DHA_ (600kHz - 10%),
R
TON
= 96.7kI (MAX17411 only),
R
TON
= 48.35kI (MAX17511/MAX17511C/
MAX17511N/MAX17511T)
DHA_ On-Time (Note 3)
t
ONA
Measured at DHA_, V
IN
= 12V (300kHz - 10%),
R
TON
= 200kI (MAX17411 only), R
TON
= 100kI
(MAX17511/MAX17511C/MAX17511N/
MAX17511T)
Measured at DHA_ (200kHz - 10%),
R
TON
= 303.3kI (MAX17411 only),
R
TON
= 151.65kI (MAX17511/MAX17511C/
MAX17511N/MAX17511T)
Measured at DHB (600kHz + 10%),
R
TON
= 96.7kI (MAX17411 only),
R
TON
= 48.35kI (MAX17511/MAX17511C/
MAX17511N/MAX17511T)
DHB On-Time (Note 3)
t
ONB
Measured at DHB, V
IN
= 12V (300kHz + 10%),
R
TON
= 200kI (MAX17411 only), R
TON
= 100kI
(MAX17511/MAX17511C/MAX17511N/
MAX17511T)
Measured at DHB (200kHz + 10%),
R
TON
= 303.3kI (MAX17411 only), R
TON
=
151.65kI (MAX17511/MAX17511C/
MAX17511N/MAX17511T)
Minimum Off-Time (Note 3)
Minimum DRVPWM_ Pulse
Width
BIAS CURRENTS
Quiescent Supply Current
(V
CC
)
Quiescent Supply Current
(V
DD_
)
Shutdown Supply Current
(V
CC
)
Shutdown Supply Current
(V
DD_
)
SLEW-RATE CONTROL
t
OFF(MIN)
Measured at DH_
MIN
157
TYP
185
MAX
213
UNITS
MAX17411/MAX17511/MAX17511C/MAX17511N/MAX17511T
276
307
338
ns
470
554
638
128
151
174
226
251
277
ns
385
150
453
200
40
521
250
ns
ns
I
BIAS
I
DRV
Measured at V
CC
, SKIP mode, FB_ forced above
the regulation point
T
A
= +25NC, measured at V
DD_
, FPWM mode,
FB_ forced above the regulation point
Measured at V
CC
, EN = GND
T
A
= +25NC, measured at V
DD
, EN = GND
SetVID - fast slew rate =
10mV/Fs (min)
SetVID - slow slew rate
= 2.5mV/Fs (min)
SetVID - fast slew rate =
20mV/Fs (min)
SetVID - slow slew rate
= 5mV/Fs (min)
5
0.02
16
0.01
10
1
30
1
mA
FA
FA
FA
10
2.5
mV/Fs
20
5
3
V
SR
= 0V or V
SR
= 5V
Slew-Rate Accuracy
V
SR
= 3V or
V
SR
= 1.5V
_______________________________________________________________________________________
Dual-Output, 3-/2-/1-Phase + 2-/1-Phase
Quick-PWM Controllers for VR12/IMVP7
MAX17411/MAX17511/MAX17511C/MAX17511N/MAX17511T
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. V
IN
= 10V, V
CC
= V
DDA
= V
DDB
= 5V, EN = V
CC
, V
GNDS_
= 0V, V
FB_
= V
CSP_AVE
= V
CSP_
= V
CSN_
= 1V;
[SerialVID = 1.00, FPWM MODE];
T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25NC. All devices 100%
tested at T
A
= +25NC. Limits over temperature guaranteed by design.)
PARAMETER
Soft-Start Slew Rate
Discharge Switch
Resistance
SYMBOL
Non-zero V
BOOT
CSNA, CSNB
Low
Mid-low
SR Four-Level Logic
Thresholds
Mid-high
High
FAULT PROTECTION
Upper POK_ (MAX17411/
MAX17511/MAX17511C/
MAX17511N/MAX17511T)
and Output Overvoltage
Protection Trip
Threshold(MAX17411/
MAX17511/MAX17511C/
MAX17511N)
Upper POK_ and Output
Overvoltage Propagation
Delay
Lower POK_ and Output
Undervoltage Protection
Trip Threshold
Lower POK_ Propagation
Delay
Output Undervoltage
Propagation Delay
POK_ Output Low Voltage
POK_ Leakage Current
POK_ Startup Delay and
Transitions Blanking Time
V
CC
Undervoltage-Lockout
Threshold
t
POK
_
V
UVLO
t
UVP
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 3)
Soft-start, SKIP mode, and output has not reached
the regulation voltage; measured at FB_
Minimum OVP threshold, measured at FB_
t
OVP
FB_ forced 25mV above trip threshold
(MAX17411/MAX17511/MAX17511C/MAX17511N)
Measured at FB_ with respect to unloaded output
voltage
FB_ forced 25mV below trip threshold
FB_ forced 25mV below trip threshold
I
SINK
= 4mA
High state, POK_ forced to 5V, T
A
= +25NC
Measured from the time when FB_ reaches the
target voltage
Rising edge, 50mV typical hysteresis, controller
disabled below this level
4.05
20
4.25
4.45
100
1.2
2.2
V
CC
- 0.4V
CONDITIONS
MIN
2.5
20
0.4
1.8
V
CC
- 1.2V
V
TYP
MAX
UNITS
mV/Fs
I
200
250
300
mV
V
OVP
1.72
1.77
0.8
5
1.82
V
Fs
V
UVP
-300
-250
-200
mV
5
200
350
0.3
1
Fs
Fs
V
FA
Fs
V
4
______________________________________________________________________________________
Dual-Output, 3-/2-/1-Phase + 2-/1-Phase
Quick-PWM Controllers for VR12/IMVP7
ELECTRICAL CHARACTERISTICS (continued)
(Circuits of Figures 1 and 2. V
IN
= 10V, V
CC
= V
DDA
= V
DDB
= 5V, EN = V
CC
, V
GNDS_
= 0V, V
FB_
= V
CSP_AVE
= V
CSP_
= V
CSN_
= 1V; [SerialVID = 1.00, FPWM MODE];
T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25NC. All devices
100% tested at T
A
= +25NC. Limits over temperature guaranteed by design.)
PARAMETER
THERMAL PROTECTION
VR_HOT# Trip Threshold
Measured at THERM_ with respect to V
CC
falling
edge; specify as % error for all TEMP MAX DAC
code settings, typical hysteresis = 100mV
Thermal zone comparator trip points, measured
with respect to V
CC
; voltage threshold
corresponding to TMAX
O
(1 - N%),
N = 0, 3, 6, 9, 12, 15, 18, 25
I
THRM
V
THERM_
= 2.5V, T
A
= +25NC
High-Z state (THERM_ > 0.505 x V
CC
), VR_HOT#
forced to 5V, T
A
= +25NC
T
TSHDN
Typical hysteresis = 15NC
160
49.5
50.5
%
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX17411/MAX17511/MAX17511C/MAX17511N/MAX17511T
Thermal Zone Registers Trip
Points
THERM_ Input Leakage
VR_HOT# Leakage Current
Internal Thermal Fault
Shutdown Threshold
49 +
24
O
N/31
-100
50 +
24
O
N/31
51 +
24
O
N/31
+100
1
%
nA
FA
NC
VALLEY CURRENT LIMIT AND DROOP
R
SENSE
= 0.65mI, I
MAXA
= 39A
R
SENSE
= 0.65mI, I
MAXA
= 36A
R
SENSE
= 0.65mI, I
MAXA
= 30A
R
SENSE
= 0.65mI, I
MAXA
= 26A
R
SENSE
= 0.75mI, I
MAXA
= 39A
V
CSP_
- V
CSN_
,
V
SR
= 0V,
V
SR
= 1.5V,
or one-phase
operation
R
SENSE
= 0.75mI, I
MAXA
= 36A
R
SENSE
= 0.75mI, I
MAXA
= 30A
R
SENSE
= 0.75mI, I
MAXA
= 26A
R
SENSE
= 0.85mI, I
MAXA
= 39A
R
SENSE
= 0.85mI, I
MAXA
= 36A
R
SENSE
= 0.85mI, I
MAXA
= 30A
R
SENSE
= 0.85mI, I
MAXA
= 26A
R
SENSE
= 0.95mI, I
MAXA
= 39A
R
SENSE
= 0.95mI, I
MAXA
= 36A
R
SENSE
= 0.95mI, I
MAXA
= 30A
R
SENSE
= 0.95mI, I
MAXA
= 26A
22.5
21.5
17.0
15.0
27.0
25.0
20.0
17.0
30.0
28.0
22.5
20.0
33.5
31.0
25.0
21.5
25.5
24.5
20.0
18.0
30.0
28.0
23.0
20.0
33.0
31.0
25.5
23.0
36.5
34.0
28.0
24.5
28.5
27.5
23.0
21.0
33.0
31.0
26.0
23.0
36.0
34.0
28.5
26.0
39.5
37.0
31.0
27.5
mV
Valley Current-Limit
Threshold Voltage (Positive)
V
ILIMA
_______________________________________________________________________________________
5
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