hot swap and power monitoring - analog devices · hot swap and power monitoring ... adm1171-2 2...
TRANSCRIPT
2007/2008
C O N T E N T S
Introduction . . . . . . . . . . . . . . . . . . . . 1
ADM4210:.Positive.Hot.Swap.....Controller . . . . . . . . . . . . . . . . . . . . 2
ADM1170/ADM1171/ADM1172:....Positive.Hot.Swap.Controllers. . . . . 3
ADM1191/ADM1192:.Digital.Power....Monitors.with.I2C. . . . . . . . . . . . . . . 4
ADM1175/ADM1176/ADM1177/.ADM1178:.Hot.Swap.with.I2C.Digital.....Power.Monitoring . . . . . . . . . . . . . . 5
ADM4073:.High-Side,.Voltage.Output,....Current-Sense.Amplifier . . . . . . . . . 6
ADM1070:.–48.V.Hot.Swap.....Controller . . . . . . . . . . . . . . . . . . . . 6
ADM1073:.Full.Feature.–48.V.....Hot.Swap.Controller . . . . . . . . . . . . 7
A N A L O G D E V I C E S A P P L I C A T I O N S B U L L E T I N
HOT SwAP AND POwER MONITORING
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ADI Introduces the World’s Most Accurate Digital Power Monitors
GND
+V
Storage Plug-In Modules Servers
Hot Swap Control Captured Power Usage Data
VOLTAGE
CURRENT
ON
TIMER
GATE
ILOAD
VOUTPOWER
ADM1175
INRUSH CURRENT IS LIMITED
CONTROLLER
WATTS
P
I2CBUS
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Features
•.Controls.supply.rails.from.2 .7.V.to.16 .5.V
•.50.mV.sense.voltage.limit.providing.minimal.voltage.drop.losses
•.Charge.pumped.gate.drive.for.N-channel.FET.
•.Automatic.retry.or.latch-off
•.6-lead.TSOT.package
ADM4210: Positive Hot Swap Controller
The ADM4�10 is a positive, high-side hot swap controller that safely enables a printed circuit board to be removed and inserted to a live backplane. An external N-channel power MOSFET and a sense resistor is required. An internal charge pump is used to enhance the gate of the N-channel FET.
VCC
GATE
1.0V
SENSE
GATEDRIVE/LOGIC
ADM4210
1.3V
20
ONVCP
TIMERTIMER
GND
LONG
VIN
VCC
RSENSE
CTIMER
LONG
SHORT
SENSE
ON
TIMER
GND
ADM4210
GATE
GND GND
VOUTQ1
CLOAD
Pin-Compatible Upgrade of LTC4210
Hot Swap Under Normal Conditions
ON
TIMER
GATE
ILOAD
VOUT
INRUSH CURRENT IS LIMITED
Hot Swap Under Shorted Load
ON
TIMER
GATE
ILOAD
VOUT
LOAD CURRENT IS LIMITED
TIMER EXPIRES SO GATE SHUTS DOWN
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Part NumberHot Swap Voltage
Range (V)Soft Start Additional Features Auto Retry Latch-Off
Price ($US)1
ADM1170-1 1 .6.to.16 .5 Yes Separate.VCC.pin Yes — 2 .10.
ADM1170-2 1 .6.to.16 .5 Yes Separate.VCC.pin — Yes 2 .10.
ADM1171-1 2 .7.to.16 .5 Yes Current-sense.output Yes — .2 .20
ADM1171-2 2 .7.to.16 .5 Yes Current-sense.output — Yes .2 .20
ADM1172-1 2 .7.to.16 .5 No Power.fail.comparator Yes — .2 .00
ADM1172-2 2 .7.to.16 .5 No Power.fail.comparator — Yes .2 .001All prices are in USD in quantities greater than 1000.
Features
•.Current-sense.output—ADM1171
•.Power.fail.detector—ADM1172
•.Controls.supply.rails.from.1 .6.V.to.16 .5.V
•.50.mV.sense.voltage.limit.providing.minimal.voltage.drop.losses
•.Charge.pumped.gate.drive.for.external.N-channel.FET
•.Automatic.retry.or.latch-off
•.8-lead.TSOT.package
ADM1170/ADM1171/ADM1172: Positive Hot Swap Controllers
The ADM1170/ADM1171/ADM117� are a series of low voltage, positive, high-side, hot swap controllers that safely enable a printed circuit board to be removed and inserted to a live backplane. This is achieved using an external N-channel power MOSFET with a current control loop that monitors the load current through a sense resistor. An internal charge pump is used to enhance the gate
of the N-channel FET.
LONG
VIN = 5V
RON1
RON2
VOUT = 5V
VCC
RSENSE Q1
CTIMER
LONG
SHORT
SENSE
ON
SS
TIMER
GND
ADM1171GATE
GND GND
CLOAD
CSS
CSOUT
WATTS
PADC
Evaluation KitsAvailable
ON
CSOUT
GATE
ILOAD
VOUT
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Part Number ALERT PolarityNumber of
I2C AddressesAdditional Features
Price ($US)1
ADM1191 ALERTB 16 Convert.pin .1 .90
ADM1192 ALERT 4 Overcurrent.timer 1 .90.1All prices are in USD in quantities greater than 1000.
Features
•.Sensing.from.3 .15.V.to.26.V
•.±1 .5%.accuracy
•.12-bit.ADC.for.current.and.voltage.readback
•.ALERT.output.for.overcurrent.interrupts
•.I2C.fast.mode-compliant.interface
•.Up.to.16.devices.on.the.same.bus
•.10-lead.MSOP
ADM1191/ADM1192: Digital Power Monitors with I2C
The ADM1191 and ADM119� are integrated current-sense amplifiers that offer digital current and voltage monitoring via an on-chip, 1�-bit analog-to-digital converter (ADC), communicated through an I�C® interface.
V
I
0
1
ADM1191
SENSE
SETV
VCC
CONV
MUX
ALERT
GND
COMPARATOR
CURRENT-SENSE
AMPLIFIER
A
SDA
SCL
A1
A0
ALERTB
12-BITADC
I2C
RSENSE
CONTROLLERADM1192
SENSEVCC
SDASCL
GND
GND
ALERT
CLRB
ADR
3.15V TO 26V
WATTS
SETV
TIMER
RON2
CTIMER
CLOAD
P
CURRENT VOLTAGEVOLTAGE
Evaluation KitsAvailable
ADM119x evaluation software.
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Part Number Additional Features Auto Retry Latch-OffPrice ($US)1
ADM1175-1 Manual.convert.pin Yes — 2 .50
ADM1175-2 Manual.convert.pin — Yes .2 .50
ADM1176-1 Additional.address.pin.providing.16.I2C.addresses.in.total Yes — .2 .50
ADM1176-2 Additional.address.pin.providing.16.I2C.addresses.in.total — Yes .2 .50
ADM1177-1 Soft.start 2 .50
ADM1177-2 Soft.start 2 .50
ADM1178-1 Overcurrent.alert.pin Yes — .2 .70
ADM1178-2 Overcurrent.alert.pin — Yes .2 .701All prices are in USD in quantities greater than 1000.
Features
•.Controls.supply.voltages.from.3 .15.V.to.16 .5.V
•.±3%.accurate.hot.swap.current.limit.level
•.12-bit.ADC.for.current.and.voltage.readback
•.Charge.pumped.gate.drive.for.N-channel.FET
•.Adjustable.current.limit.with.circuit.breaker
•.Automatic.retry.or.latch-off.on.current.fault.
•.I2C.fast.mode-compliant.interface
•.10-lead.MSOP
ADM1175/ADM1176/ADM1177/ADM1178: Hot Swap with I2C Digital Power Monitoring
The ADM117�/ADM1176/ADM1177/ADM1178 are a series of integrated hot swap controllers and current-sense amplifiers that offer digital current and voltage monitoring via an on-chip, 1�-bit analog-to-digital converter (ADC), communicated through an I�C interface.
V
I
0
1SENSE
VCC
CONV
MUX
FET DRIVECONTROLLER
GND
UV COMPARATOR
CURRENT-SENSE
AMPLIFIER
A
SDA
SCL
ADR
GATE
TIMER
12-BITADC
I2C
ADM1175-1
ON
1.3V
LONG
VIN = 12V
RON1
RON2
VCC
RSENSE
HOT SWAP CONTROL
Q1
CTIMER
LONG
SHORT
SENSE
ON
SS
TIMER
GND
ADM1177
GATE
GND GND
CLOAD
CSS
CONTROLLER
WATTS
PSDASCL
ADR
CURRENT VOLTAGEVOLTAGE
Evaluation KitsAvailable
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Features
•.Low.cost,.compact,.current-sense.solution
•.Three.available.gain.versions.(20/50/100)
•.Typical.±1 .0%.full-scale.accuracy
•.Wide.1 .8.MHz.bandwidth
•.3.V.to.28.V.operating.supply
•.Wide.2.V.to.28.V.common-mode.range;..operates.from.−40°C.to.+125°C
•.Available.in.a.6-lead.SOT-23.package
ADM4073: High-Side, Voltage Output, Current-Sense Amplifier
The ADM407� is a low cost, high-side, current-sense amplifier ideal for small portable applications. The device is available in three dif-ferent gain models. The voltage on the output pin is determined by the current flowing through the selectable external sense resistor and the gain of the version selected.
Features
•.Typically.operates.from.–36.V.to.–80.V
•.Tolerates.transients.up.to.–200.V.
•.Inrush.current.control
•.Short-circuit.protection
•.Programmable.timeout.in.current.limit
•.Limited.consecutive.retry
•.Single.pin.undervoltage/overvoltage.detection
•.Small,.6-lead.SOT-23.package
ADM1070: –48 V Hot Swap Controller
The ADM1070 is a negative voltage hot swap controller that allows a board to be safely inserted and removed from a live –48 V back-plane. The part achieves this by providing robust current limiting, protection against transient and nontransient short circuits, and overvoltage and undervoltage conditions. Inrush current is limited to a programmable value by controlling the gate drive of an external
N-channel FET. The current limit can be programmed by the choice of the external sense resistor.
2V TO 28V
3V TO 28V
0.1 F
VOUTRSENSE
ILOAD
IRG1
OUT
RS+
GND
AV
RS–
VCCRG2
RGD = 12k
RG1
ADM4073IRGD
CURRENTMIRROR
Pin-Compatible Upgrade of MAX4073
CENTRAL OFFICE BACKPLANE –48V
–48V
–48V RNT
FAULT TIMERAND CONTROL
100mVREF
SENSE
GATE
ADM1070SOT-23-6PACKAGE
VCC
VREF
R1
R2
RSENSE
TIMER
RDROP
VIN
VEE
UV/OVVIN
45A
N-CHANNELMOSFET
VCC ANDREFERENCEGENERATOR
OVER-/UNDER-VOLTAGE
DETECTIONCIRCUIT
LINEAR INRUSHCURRENT CONTROL
OSCILLATORCIRCUIT
5V3.3VGNDISOLATED
DC-TO-DCCONVERTER
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Features
•.Precision.current.control
•.Soft.start.inrush.current-limit.profiling
•.Additional.SOA.protection.via.FET.drain.monitor
•.Precision.maximum.on-time.in-current.limit
•.PWM.current.control.scheme
•.Limited.number.of.PWM.cycles
•.Continuous.autoretry.with.a.5-second.cooling.period
•.High.transient.voltage.tolerance
•.Separate.UV.and.OV.pins.
•.Power-good.flag
ADM1073: Full Feature –48 V Hot Swap Controller
The ADM107� is a negative voltage hot swap controller that allows a board to be safely inserted and removed from a live –48 V backplane. This device performs the same basic function as the ADM1070 but with the addition of new features providing a more robust and powerful solution. A built-in soft start function allows control of the inrush current profile by an external capacitor on the
soft start pin. The drain of the FET is also monitored to better ensure the FETs SOA is not exceeded during linear regulation of the FET. Separate UV and OV pins are included to provide further programmability. There are also a number of additional I/O pins, which can be used to determine and control the status of the system. The ADM107� features a high accuracy current control loop, which is key to a robust hot swap control solution.
Suitable for High Current Applications
CENTRAL OFFICE BACKPLANE –48V
–48V
VCC
VREF
RDROPVIN
R3
R4
RSENSE
VEE
SENSE
GATE
5 SECSHUTDOWN
EDGETRIGGER
DRAINFOLDBACKAND
PWRGD
SPLYGD
PWM TIMINGCONTROL
FETDRIVE
1msFILTER
R1
R2
SS
OVERVOLTAGEMONITOR
TIMER
UV
OV
CSSCONRON
CLOAD
RDRAIN
N-CHANNELMOSFET
FAULT
–48V RTN
SUPPLYMONITOR
END OFPWM RETRY
PERIOD
PWRGD
SHDN
RESTART
LATCHED
VOUT
UNDERVOLTAGEMONITOR
VCC AND REFERENCEGENERATOR
SOFT STARTRAMP
GENERATOR
0V
0V
0V
GATE
SENSE
VOUT
–48V
0 91 2 3 4 5 6 7 8 10MILLISECONDS
Typical Startup Profiles
+100mV
+12.3V
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Hot Swap Controllers
Part Number Voltage Range (V)
Undervoltage Detection/Overvoltage Detection Digital V and I Readback Additional Features Package Price
($U.S.)1
ADM1070 –18.to.–80 UV/OV.pin — — 6-lead.SOT-23 1 .55
ADM1073 –18.to.–80 UV.pin,.OV.pin —Soft.start,.
drain.pin.monitoring,.additional.I/Os
14-lead.TSSOP 2 .10
ADM1170 1 .6.to.16 .5 ON.pin.(UV) — Soft.start,.separate.VCC.pin 8-lead.TSOT 2 .10
ADM1171 2 .7.to.16 .5 ON.pin.(UV) — Soft.start,.current-sense.output 8-lead.TSOT 2 .20
ADM1172 2 .7.to.16 .5 ON.pin.(UV) — Power.fail.detector 8-lead.TSOT 2 .00
ADM1175 3 .15.to.16 .5 ON.pin.(UV);.ONB.pin.(OV) I2C.interface.with.four.addresses Convert.pin 10-lead.MSOP 2 .50
ADM1176 3 .15.to.16 .5 ON.pin.(UV) I2C.interface.with.16.addresses — 10-lead.MSOP 2 .50
ADM1177 3 .15.to.16 .5 ON.pin.(UV) I2C.interface.with.four.addresses Soft.start 10-lead.MSOP 2 .50
ADM1178 3 .15.to.16 .5 ON.pin.(UV) I2C.interface.with.four.addresses ALERTB.pin 10-lead.MSOP 2 .70
ADM4210 2 .7.to.16 .5 ON.pin.(UV) — — 6-lead.TSOT 2 .981All prices are in USD in quantities greater than 1000.
Digital Power Monitors
Part Number Voltage Range (V)
Overcurrent Timer Digital V and I Readback Additional Features Package Price
($U.S.)1
ADM1191 3 .15.to.26 — I2C.Interface.with.16.addresses Programmable.alert.output,.convert.pin 10-lead.MSOP 1 .90
ADM1192 3 .15.to.26 Capacitor.Programmable I2C.Interface.with.four.addresses Programmable.alert.output,.
timer.CLR.pin 10-lead.MSOP 1 .90
1All prices are in USD in quantities greater than 1000.
Current Sense Amplifiers—High Side
Part Number CM Range (V) Gain Max Sense Voltage
(mV)Supply Range
(V) Accuracy (Typ) Package Price($U.S.)1
ADM4073T 2.to.28 20 150 3.to.28 1% 6-lead.SOT-23 0 .6
ADM4073F 2.to.28 50 150 3.to.28 1% 6-lead.SOT-23 0 .6
ADM4073H 2.to.28 100 150 3.to.28 1% 6-lead.SOT-23 0 .61All prices are in USD in quantities greater than 1000.