Hot swap AND
POWER MONITORING
2007/2008
CONTENTS
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
ADI Introduces the World’s Most Accurate Digital Power Monitors
Introduction . . . . . . . . . . . . . . . . . . . . 1
ADM4210: Positive Hot Swap .
Controller . . . . . . . . . . . . . . . . . . . . 2
Hot Swap Control
ADM1170/ADM1171/ADM1172:.
Positive Hot Swap Controllers. . . . . 3
Captured Power Usage Data
ON
ADM1191/ADM1192: Digital Power.
Monitors with I2C. . . . . . . . . . . . . . . 4
TIMER
ADM1175/ADM1176/ADM1177/.
ADM1178: Hot Swap with I2C Digital .
Power Monitoring . . . . . . . . . . . . . . 5
GATE
ADM4073: High-Side, Voltage Output,.
Current-Sense Amplifier . . . . . . . . . 6
VOLTAGE
INRUSH CURRENT IS LIMITED
CURRENT
ILOAD
POWER
VOUT
ADM1070: –48 V Hot Swap .
Controller . . . . . . . . . . . . . . . . . . . . 6
ADM1073: Full Feature –48 V .
Hot Swap Controller . . . . . . . . . . . . 7
CONTROLLER
WATTS
ADM1175
I2C
BUS
¿P
+V
GND
Storage
Plug-In Modules
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Servers
ADM4210: Positive Hot Swap Controller
T
he ADM4210 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.
Features
VCC
• Controls supply rails from 2.7 V to 16.5 V
SENSE
ò20
• 50 mV sense voltage limit providing minimal
voltage drop losses
VCP
ON
GATE
DRIVE/
LOGIC
1.3V
• Charge pumped gate drive for N-channel FET
1.0V
• Automatic retry or latch-off
TIMER
• 6-lead TSOT package
TIMER
GND
ON
ON
TIMER
TIMER
GATE
TIMER EXPIRES SO
GATE SHUTS DOWN
GATE
LOAD CURRENT IS LIMITED
INRUSH CURRENT IS LIMITED
ILOAD
ILOAD
VOUT
VOUT
VIN
RSENSE
LONG
Q1
VOUT
CLOAD
VCC
SENSE
GATE
ADM4210
SHORT
ON
Pin-Compatible
Upgrade of LTC4210
TIMER
GND
CTIMER
GND
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ADM4210
Hot Swap Under Shorted Load
Hot Swap Under Normal Conditions
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GATE
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GND
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ADM1170/ADM1171/ADM1172: Positive Hot Swap Controllers
T
he ADM1170/ADM1171/ADM1172 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.
Features
• Current-sense output—ADM1171
ON
• Power fail detector—ADM1172
GATE
• Controls supply rails from 1.6 V to 16.5 V
• 50 mV sense voltage limit providing minimal voltage
drop losses
ILOAD
• Charge pumped gate drive for external N-channel FET
VOUT
• Automatic retry or latch-off
• 8-lead TSOT package
CSOUT
VIN = 5V
RSENSE
LONG
Q1
VOUT = 5V
CLOAD
VCC
SENSE
WATTS
GATE
ADM1171
SHORT RON1
ON
CSS
TIMER
RON2
GND
¿P
ADC
CSOUT
SS
GND
CTIMER
LONG
GND
Evaluation Kits
Available
Part Number
Hot Swap Voltage
Range (V)
Soft Start
Additional Features
Auto Retry
Latch-Off
Price
($US)1
ADM1170-1
1.6 to 16.5
Yes
Separate VCC pin
Yes
—
2.10
ADM1170-2
1.6 to 16.5
Yes
Separate VCC pin
—
Yes
2.10
ADM1171-1
2.7 to 16.5
Yes
Current-sense output
Yes
—
2.20
ADM1171-2
2.7 to 16.5
Yes
Current-sense output
—
Yes
2.20
ADM1172-1
2.7 to 16.5
No
Power fail comparator
Yes
—
2.00
ADM1172-2
2.7 to 16.5
No
Power fail comparator
—
Yes
2.00
All prices are in USD in quantities greater than 1000.
1
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ADM1191/ADM1192: Digital Power Monitors with I2C
T
he ADM1191 and ADM1192 are integrated current-sense amplifiers that offer digital current and voltage monitoring via an on-chip,
12-bit analog-to-digital converter (ADC), communicated through an I2C® interface.
Features
CONV
ADM1191
• Sensing from 3.15 V to 26 V
• ±1.5% accuracy
V
VCC
• 12-bit ADC for current and voltage readback
I
A
SENSE
• ALERT output for overcurrent interrupts
• Up to 16 devices on the same bus
1
I2C
12-BIT
ADC
A0
SETV
ALERT
• 10-lead MSOP
SCL
A1
MUX
CURRENTSENSE
AMPLIFIER
• I2C fast mode-compliant interface
SDA
0
ALERTB
COMPARATOR
GND
3.15V TO 26V
RSENSE
CLOAD
VCC
SENSE
CONTROLLER
ADM1192
WATTS
SDA
SCL
SETV
RON2
¿P
ALERT
CLRB
TIMER
ADR
GND
CTIMER
GND
VOLTAGE
CURRENT
VOLTAGE
Evaluation Kits
Available
ADM119x evaluation software.
ALERT Polarity
Number of
I2C Addresses
Additional Features
Price
($US)1
ADM1191
ALERTB
16
Convert pin
1.90
ADM1192
ALERT
4
Overcurrent timer
1.90
Part Number
All prices are in USD in quantities greater than 1000.
1
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ADM1175/ADM1176/ADM1177/ADM1178: Hot Swap with I2C Digital Power Monitoring
T
he ADM1175/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, 12-bit analog-to-digital converter (ADC), communicated through an I2C interface.
Features
CONV
ADM1175-1
• Controls supply voltages from 3.15 V to 16.5 V
MUX
• ±3% accurate hot swap current limit level
V
VCC
• 12-bit ADC for current and voltage readback
A
I
SDA
0
I2C
12-BIT
ADC
1
SENSE
• Charge pumped gate drive for N-channel FET
SCL
ADR
CURRENTSENSE
AMPLIFIER
• Adjustable current limit with circuit breaker
• Automatic retry or latch-off on current fault
ON
FET DRIVE
CONTROLLER
GATE
1.3V
• I C fast mode-compliant interface
2
UV COMPARATOR
• 10-lead MSOP
GND
TIMER
HOT SWAP CONTROL
VIN = 12V
RSENSE
LONG
Q1
CLOAD
VCC
Evaluation Kits
Available
SENSE
GATE
CONTROLLER
WATTS
ADM1177
SHORT RON1
ON
CSS
TIMER
RON2
GND
ADR
GND
CTIMER
LONG
¿P
SDA
SCL
SS
GND
VOLTAGE
CURRENT
VOLTAGE
Part Number
Additional Features
Auto Retry
Latch-Off
Price
($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 I C addresses in total
—
Yes
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
2.70
2
All prices are in USD in quantities greater than 1000.
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ADM4073: High-Side, Voltage Output, Current-Sense Amplifier
T
he ADM4073 is a low cost, high-side, current-sense amplifier ideal for small portable applications. The device is available in three different 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
ILOAD
RSENSE
2V TO 28V
• Low cost, compact, current-sense solution
• Three available gain versions (20/50/100)
VCC
3V TO 28V
• Typical ±1.0% full-scale accuracy
VOUT
RS–
RS+
IRG1
RG1
RG2
0.1¿F
• Wide 1.8 MHz bandwidth
AV
• 3 V to 28 V operating supply
Pin-Compatible
Upgrade of MAX4073
• Wide 2 V to 28 V common-mode range; .
operates from −40°C to +125°C
OUT
CURRENT
MIRROR
IRGD
• Available in a 6-lead SOT-23 package
RGD = 12k±
ADM4073
GND
ADM1070: –48 V Hot Swap Controller
T
he ADM1070 is a negative voltage hot swap controller that allows a board to be safely inserted and removed from a live –48 V backplane. 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.
Features
• Typically operates from –36 V to –80 V
• Tolerates transients up to –200 V
• Inrush current control
CE
R
NT
• Short-circuit protection
CE
AL
FI
OF
PLA
CK
BA
RDROP
48V
–
NE
UV/OV
• Limited consecutive retry
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VREF
ADM1070
SOT-23-6
PACKAGE
100mV
REF
45A
GATE
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MOSFET
SENSE
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TIMER
5V
3.3V
GND
LINEAR INRUSH
CURRENT CONTROL
VIN
OSCILLATOR
CIRCUIT
• Small, 6-lead SOT-23 package
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VCC
OVER-/UNDERVOLTAGE
DETECTION
CIRCUIT
FAULT TIMER
AND CONTROL
–48V
• Single pin undervoltage/overvoltage detection
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VCC AND
REFERENCE
GENERATOR
–48V RNT
• Programmable timeout in current limit
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VIN
R1
ISOLATED
DC-TO-DC
CONVERTER
RSENSE
VEE
ADM1073: Full Feature –48 V Hot Swap Controller
T
he ADM1073 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 ADM1073 features a high accuracy current control loop, which is key to a robust hot
swap control solution.
Features
• Precision current control
• Soft start inrush current-limit profiling
VIN
• Additional SOA protection via FET drain monitor
• Precision maximum on-time in-current limit
L
RA
T
EN
C
L
KP
AC
EB
FIC
OF
E
AN
R1
V
–48
PWRGD
SPLYGD
RDROP
CLOAD
R3
VCC
VCC AND REFERENCE
GENERATOR
FOLDBACK
AND
PWRGD
VREF
OV
OVERVOLTAGE
MONITOR
SUPPLY
MONITOR
UV
UNDERVOLTAGE
MONITOR
1ms
FILTER
• Limited number of PWM cycles
RDRAIN
FAULT
FET
DRIVE
–48V RTN
• PWM current control scheme
VOUT
DRAIN
GATE
N-CHANNEL
MOSFET
SENSE
SHDN
5 SEC
SHUTDOWN
–48V
RESTART
EDGE
TRIGGER
• Continuous autoretry with a 5‑second cooling period
R2
SOFT START
RAMP
GENERATOR
PWM TIMING
CONTROL
R4
• High transient voltage tolerance
TIMER
RON
• Separate UV and OV pins
END OF
PWM RETRY
PERIOD
RSENSE
VEE
SS
CSS
CON
LATCHED
• Power-good flag
Typical Startup Profiles
+12.3V
GATE 0V
+100mV
SENSE
0V
VOUT 0V
–48V
0
1
2
Suitable for
High Current
Applications
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4
5
6
MILLISECONDS
7
8
9
10
Hot Swap Controllers
Part Number
ADM1070
Additional Features
Package
Price
($U.S.)1
—
—
6-lead SOT-23
1.55
14-lead
TSSOP
2.10
Voltage Range
(V)
Undervoltage Detection/
Overvoltage Detection
Digital V and I Readback
–18 to –80
UV/OV pin
ADM1073
–18 to –80
UV pin, OV pin
—
Soft start,
drain pin monitoring,
additional I/Os
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)
I C 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
2.98
2
All prices are in USD in quantities greater than 1000.
1
Digital Power Monitors
Voltage Range
(V)
Overcurrent
Timer
Digital V and I Readback
Additional Features
Package
Price
($U.S.)1
ADM1191
3.15 to 26
—
I2C Interface with 16 addresses
Programmable alert output,
convert pin
10-lead MSOP
1.90
ADM1192
3.15 to 26
Capacitor
Programmable
I2C Interface with four addresses
Programmable alert output,
timer CLR pin
10-lead MSOP
1.90
Part Number
All prices are in USD in quantities greater than 1000.
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Worldwide Headquarters
Analog Devices, Inc..
One Technology Way.
P.O. Box 9106.
Norwood, MA 02062-9106.
U.S.A..
Tel: 781.329.4700.
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U.S.A. only) .
Fax: 781.461.3113
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Japan Headquarters
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Fax: 813.5402.1064
1
Current Sense Amplifiers—High Side
CM Range
(V)
Gain
Max Sense Voltage
(mV)
Supply Range
(V)
Accuracy (Typ)
Package
Price
($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
0.6
Part Number
All prices are in USD in quantities greater than 1000.
1
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trademarks are the property of their respective owners.
Printed in the U.S.A.
B02939-10-6/07(C)
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Southeast Asia
Headquarters
Analog Devices.
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