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PDF MAX16064 Data sheet ( Hoja de datos )
| Número de pieza | MAX16064 | |
| Descripción | Power-Supply Controller | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-4807; Rev 0; 7/09
±0.3% Accurate, Quad, Power-Supply Controller with
Active-Voltage Output Control and PMBus Interface
General Description
The MAX16064 is a fully integrated 4-channel digital
power-supply controller and monitor IC that can be con-
nected up to four power supplies to provide complete
digital configurability. By interfacing to the power-supply
reference input or feedback node, and the output enable,
the MAX16064 takes control of the power supply to pro-
vide tracking, soft-start, sequencing, margining, and
dynamic adjustment of the output voltage.
Power-supply sequencing can be performed
autonomously or controlled over the PMBus™ interface.
Sequencing is controlled during power-down as well as
power-up. Multiple MAX16064s can be combined to
autonomously sequence more supplies. The sequencing
order is stored in an external configuration EEPROM so
sequence order changes can be reprogrammed without
changing the PCB layout.
The MAX16064 features an internal temperature sensor
providing an additional level of system monitoring.
Other features include a reset output and an SMBus™
alert output.
Each channel of the MAX16064 includes an accurate
12-bit analog-to-digital converter (ADC) input and a differen-
tial amplifier for accurately monitoring and reporting the volt-
age at the load without being influenced by any difference in
ground potentials. An integrated 12-bit digital-to-analog con-
verter (DAC) can margin power supplies and dynamically
adjust the output voltage using a closed-loop control system
to provide an output-voltage accuracy of ±0.3%.
The user-programmable registers provide flexible and
www.DaatcaSchueraett4eUc.coonmtrol of time events such as delay time and
transition period, monitoring for overvoltage and under-
voltage, overtemperature fault and warning handling.
The closed-loop operation is also programmable to make
sure the MAX16064 works with any existing power sup-
ply to provide superior regulation accuracy and accurate
margining.
The MAX16064 operates using a PMBus-compliant com-
munication protocol. The device can be programmed
using this protocol or with a free graphic-user interface
(GUI) available from the Maxim website that significantly
reduces development time. Once the configuration is
complete, the results can be saved into an EEPROM or
loaded into the device through PMBus at power-up. This
allows remote configuration of any power supply using
the MAX16064, replacing expensive recalls or field ser-
vice. The MAX16064 can be programmed with up to 114
distinct addresses to support large systems. The
MAX16064 is offered in a space-saving, 36-pin, lead-free,
6mm x 6mm TQFN package and is fully specified from
-40°C to +85°C.
Features
♦ Accurate Voltage Output Control (AVOC) Controls
Output Voltage with ±0.3% Accuracy
♦ PMBus Interface for Programming, Monitoring,
Sequencing Up and Down, and Margining
♦ Output Voltage and Temperature Monitoring with
Adjustable Monitor Rate
♦ Programmable Soft-Start and Soft-Stop Ramp
Rates
♦ Power-Supply Control using REFIN or FB
Terminals
♦ Master-Slave Clocking Option Provides Accurate
Timing Reference Across Multiple Devices
♦ External EEPROM Interface for Autoboot on
Power-Up
♦ 3.0V to 3.6V Operating Voltage Range
♦ 6mm x 6mm, 36-Pin TQFN Package
Applications
Routers
Servers
Storage Systems
Telecom/Networking
DC-DC Modules and Power Supplies
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX16064ETX+
-40°C to +85°C
36 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Pin Configuration and Typical Operating Circuit appears at
end of data sheet.
PMBus is a trademark of SMIF, Inc.
SMBus is a trademark of Intel Corp.
________________________________________________________________ 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  
±0.3% Accurate, Quad, Power-Supply Controller with
Active-Voltage Output Control and PMBus Interface
(VAVDD = VDVDD = 3.3V, TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics
TOTAL SUPPLY CURRENT
vs. SUPPLY VOLTAGE
20
16 TA = -40NC
12
8
TA = +25NC
TA = +85NC
4
0
2.6
2.8 3.0 3.2 3.4
VAVDD = VDVDD (V)
3.6
UV_FAULT TO RESET RESPONSE
MAX16064 toc04
5V
VOUT0
2V/div
3.3V
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1ms/div
RESET
2V/div
NORMALIZED EN THRESHOLD
vs. TEMPERATURE
1.010
1.008
NORMALIZED AT TA = +25NC
1.006
1.004
1.002
1.000
0.998
0.996
0.994
0.992
0.990
-40
-15 10 35 60
TEMPERATURE (NC)
85
ENOUT_ OUTPUT LOW VOLTAGE
vs. SINK CURRENT
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0 5 10 15 20 25 30 35 40
ISINK (mA)
NORMALIZED RESET TIMEOUT
PERIOD vs. TEMPERATURE
1.10
1.08 NORMALIZED AT TA = +25NC
1.06
1.04
1.02
1.00
0.98
0.96
0.94
0.92
0.90
-40
-15 10 35 60
TEMPERATURE (NC)
85
POWER SUPPLIES OUTPUT ACCURACY
vs. TEMPERATURE
0.5
0.4
0.3 VOUT2 = 1.8V
0.2
0.1
0
-0.1
-0.2 VOUT0 = 5V
-0.3 VOUT1 = 3.3V
VOUT3 = 1.1V
-0.4
-0.5
-40
-15 10 35 60
TEMPERATURE (NC)
85
ENOUT_WITH AVDD = DVDD RISING
MAX16064 toc07
AVDD = DVDD RISING 3.3V/ms
ENOUT_ WITH AVDD = DVDD FALLING
MAX16064 toc08
AVDD = DVDD
1V/div
AVDD = DVDD
1V/div
200ms/div
ENOUT1,2,3,4
2V/div
400Fs/div
ENOUT1,2,3,4
2V/div
_______________________________________________________________________________________ 5
5 Page 
±0.3% Accurate, Quad, Power-Supply Controller with
Active-Voltage Output Control and PMBus Interface
Detailed Description
The MAX16064 adds digital control functionality to four
power supplies. Using a closed-loop control system,
the MAX16064 can continuously adjust the power-sup-
ply output voltages to maintain ±0.3% output-voltage
accuracy. The MAX16064 can also be programmed to
sequence, track, and margin each power supply.
A PMBus-compliant interface bus provides access to
configuration parameters of the MAX16064, including
monitoring thresholds, sequence delays, soft-start and
soft-stop slew rates, output-voltage settings, an on-chip
temperature sensor, and more.
Up to 114 MAX16064s can reside on the same PMBus
bus, each controlling its own power supplies, under
commands from the PMBus system controller, as shown
in Figure 2. The MAX16064s can be placed close to the
power supplies they control so that all sensitive analog
traces are short and less susceptible to noise. The
power supplies can also be placed close to the load
where they provide the best transient response and low-
est losses with short power plane runs.
SYSTEM
CONTROLLER
SCL
SDA
IRQ
RST
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RS0+
RS0-
DACOUT0
ENOUT0
MAX16064
SCL
SDA
SMBALERT
RESET
RS1+
RS1-
DACOUT1
ENOUT1
RS2+
RS2-
DACOUT2
ENOUT2
RS3+
RS3-
DACOUT3
ENOUT3
VO+
VO-
POWER
SUPPLY
FB 0
EN
VO+
VO-
POWER
SUPPLY
FB 1
EN
VO+
VO-
POWER
SUPPLY
FB 2
EN
VO+
VO-
POWER
SUPPLY
FB 3
EN
RS0+
RS0-
DACOUT0
ENOUT0
MAX16064
SCL
SDA
SMBALERT
RESET
RS1+
RS1-
DACOUT1
ENOUT1
RS2+
RS2-
DACOUT2
ENOUT2
RS3+
RS3-
DACOUT3
ENOUT3
VO+
VO-
POWER
SUPPLY
FB (N-3)
EN
VO+
VO-
POWER
SUPPLY
FB (N-2)
EN
VO+
VO-
POWER
SUPPLY
FB (N-1)
EN
VO+
VO-
POWER
SUPPLY
FB (N)
EN
Figure 2. System Application Showing Multiple MAX16064s Controlling Power Supplies
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX16064.PDF ] | |
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