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PDF MAX17082 Data sheet ( Hoja de datos )
| Número de pieza | MAX17082 | |
| Descripción | (MAX17021 - MAX17482) Quick-PWM Controllers | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX17082 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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19-4372; Rev 2; 7/09
EVAALVUAAILTAIOBNLEKIT
Dual-Phase, Quick-PWM Controllers for
IMVP-6+/IMVP-6.5 CPU Core Power Supplies
General Description
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
www.DaatareShaeveat4ilUa.bcloemin a 5mm x 5mm, 40-pin TQFN package.
Applications
IMVP-6+/IMVP-6.5 Core Supply
Multiphase CPU Core Supply
Voltage-Positioned, Step-Down Converters
Notebook/Desktop Computers
Blade Servers
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX17021GTL+
-40°C to +105°C 40 TQFN-EP*
MAX17082GTL+
-40°C to +105°C 40 TQFN-EP*
MAX17482GTL+
-40°C to +105°C 40 TQFN-EP*
+Denotes a lead-free(Pb)/RoHS-compliant package.
*EP = Exposed pad.
Quick-PWM is a trademark of Maxim Integrated Products, Inc.
Features
o Single-/Dual-Phase, Quick-PWM Controllers
o MAX17021 IMVP-6+ (Montevina)
o MAX17082/MAX17482 IMVP-6.5 (Calpella)
o ±0.5% VOUT Accuracy Over Line, Load, and
Temperature
o 7-Bit 0 to 1.50V VID Control
o Dynamic Phase Selection Optimizes Active/Sleep
Efficiency
o Transient Phase Overlap Reduces Output
Capacitance
o Integrated Boost Switches
o Active Voltage Positioning with Adjustable Gain
o Programmable 200kHz to 800kHz Switching
Frequency
o Accurate Current Balance and Current Limit
o Adjustable Slew-Rate Control
o Power-Good, Clock Enable, and Thermal-Fault
Outputs
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
Pin Configuration
TOP VIEW
30 29 28 27 26 25 24 23 22 21
DPRSTP (SLOW) 31
20 PHASEGD
D0 32
19 PWRGD
D1 33
18 CLKEN
D2 34
17 V3P3
D3 35
D4 36
D5 37
MAX17021
(MAX17082)
MAX17482
16 TON
15 PSI
14 DPRSLPVR
D6 38
CSP1 39
*EP 13 SHDN
12 CSP2
CSN1 40
11 CSN2
+ 1 2 3 4 5 6 7 8 9 10
THIN QFN
() DESIGNATES MAX17082/MAX17482 PIN NAME.
*EXPOSED PAD. CONNECTED TO GND.
________________________________________________________________ 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.
1 page  
Dual-Phase, Quick-PWM Controllers for
IMVP-6+/IMVP-6.5 CPU Core Power Supplies
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, VIN = 10V, VCC = VDD = VSHDN = VPGDIN = VPSI = VILIM = 5V, V3P3 = 3.3V, DPRSLPVR = GNDS = GND, VCSP1
= VCSN1 = VCSP2 = VCSN1 = 1.0000V, FB = FBAC, RFBAC = 3.57kΩ from FBAC to CSN1, D6–D0 = [0101000]; MAX17082/MAX17482:
VSLOW = 5V; MAX17021: DPRSTP = GND; TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
CLKEN, PWRGD, and
PHASEGD Transition
Blanking Time
(VID Transitions)
SYMBOL
CONDITIONS
tBLANK
Measured from the time when FB reaches the
target voltage (Note 2)
MIN TYP MAX UNITS
20 μs
PHASEGD Transition
Blanking Time (Phase 2
Enable Transitions)
Number of DH2 pulses for which PHASEGD is
blanked after phase 2 is enabled
CLKEN Output Low Voltage
CLKEN Output High
Voltage
Low state, ISINK = 3mA
High state, ISOURCE = 3mA
V3P3 -
0.4
PWRGD, PHASEGD Output
Low Voltage
Low state, ISINK = 3mA
PWRGD, PHASEGD
Leakage Current
High-impedance state, PWRGD, PHASEGD forced
to 5V, TA = +25°C
CSN1 Pulldown Resistance
in Shutdown
SHDN = 0, measured after soft-shutdown
completed (DL_ = low)
VCC Undervoltage Lockout
(UVLO) Threshold
VUVLO(VCC)
Rising edge, 65mV typical hysteresis,
controller disabled below this level
4.05
THERMAL PROTECTION
VRHOT Trip Threshold
www.DataSheet4U.com
VRHOT Delay
tVRHOT
Measured at THRM as a percentage of VCC,
falling edge, typical hysteresis = 75mV
THRM forced 25mV below the VRHOT trip
threshold, falling edge
29
VRHOT Output
On-Resistance
RON(VRHOT) Low state
VRHOT Leakage Current
High-impedance state, VRHOT forced to 5V,
TA = +25°C
THRM Input Leakage
ITHRM VTHRM = 0 to 5V, TA = +25°C
Thermal-Shutdown Threshold TSHDN Typical hysteresis = 15°C
VALLEY CURRENT LIMIT, DROOP, AND CURRENT BALANCE
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
-0.1
7
45
20
-4
32
10
4.27
30
10
2
160
10
50
22.5
Pulses
0.4 V
V
0.4 V
1 μA
4.48
V
31 %
μs
10
1
+0.1
μA
μA
°C
13
55 mV
25
+4 mV
Current-Limit Threshold
Voltage (Zero Crossing)
VZERO VGND - VLX_, DPRSLPVR = 5V
1 mV
_______________________________________________________________________________________ 5
5 Page 
Dual-Phase, Quick-PWM Controllers for
IMVP-6+/IMVP-6.5 CPU Core Power Supplies
Typical Operating Characteristics
(Circuit of Figure 1. VIN = 12V, VCC = VDD = 5V, SHDN = VCC, D0–D6 set for 1.075V, TA = +25°C, unless otherwise specified.)
OUTPUT VOLTAGE vs. LOAD CURRENT
(VOUT(HFM) = 1.075V)
1.15
1.10
1.05
1.00
0.95
0
10 20 30 40
LOAD CURRENT (A)
50
EFFICIENCY vs. LOAD CURRENT
(VOUT(LFM) = 0.875V)
90
7V
80
12V
70
20V
60
www.DataSheet4U.com
50
0.1
SKIP MODE
PWM MODE
1.0 10.0 100.0
LOAD CURRENT (A)
SWITCHING FREQUENCY
vs. LOAD CURRENT
400
350 VOUT(LFM) = 0.875V
300 VOUT(HFM) = 1.075V
250
200
150
100
50
0
0
DPRSLPVR = VCC
DPRSLPVR = GND
10 20 30 40
LOAD CURRENT (A)
50
EFFICIENCY vs. LOAD CURRENT
(VOUT(HFM) = 1.075V)
100
7V
90
80 12V
20V
70
60
50
0.1
1.0 10.0
LOAD CURRENT (A)
100.0
OUTPUT VOLTAGE vs. LOAD CURRENT
(VOUT(C4) = 0.4V)
0.41
OUTPUT VOLTAGE vs. LOAD CURRENT
(VOUT(LFM) = 0.875V)
0.90
0.89
0.88 SKIP MODE
0.87
0.86
PWM MODE
0.85
0.84
0.83
0
5 10 15
LOAD CURRENT (A)
20
EFFICIENCY vs. LOAD CURRENT
(VOUT(C4) = 0.4V)
90
7V
80
70
12V
0.40 60
0.39
0
1234
LOAD CURRENT (A)
5
NO-LOAD SUPPLY CURRENT vs. INPUT VOLTAGE
(VOUT(HFM) = 1.075V)
100
50 20V
40
30
0.01
DPRSLPVR = VCC
0.10 1.00
LOAD CURRENT (A)
10.00
NO-LOAD SUPPLY CURRENT vs. INPUT VOLTAGE
AT SKIP MODE (VOUT(HFM) = 1.075V)
10.0
75
IIN
50
ICC + IDD
25
ICC + IDD
1.0
0.1 IIN
DPRSLPVR = GND
0
6 9 12 15 18 21 24
INPUT VOLTAGE (V)
DPRSLPVR = VCC
0
6 9 12 15 18 21 24
INPUT VOLTAGE AT SKIP MODE (V)
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX17082.PDF ] | |
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