MAX5929AEEG+ Maxim Integrated Products, MAX5929AEEG+ Datasheet

IC HOT SWAP CTLR QUAD 24QSOP

MAX5929AEEG+

Manufacturer Part Number
MAX5929AEEG+
Description
IC HOT SWAP CTLR QUAD 24QSOP
Manufacturer
Maxim Integrated Products
Type
Hot-Swap Controllerr
Datasheet

Specifications of MAX5929AEEG+

Applications
General Purpose
Internal Switch(s)
No
Voltage - Supply
1 V ~ 15 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
24-QSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX5927A/MAX5929A–MAX5929D +1V to +15V
quad hot-swap controllers provide complete protection
for multisupply systems. They allow the safe insertion
and removal of circuit cards into live backplanes. These
devices hot swap multiple supplies ranging from +1V to
+15V, provided one supply is at or above +2.7V. The
input voltage rails (channels) can be configured to
sequentially turn-on/off, track each other, or have com-
pletely independent operation.
The discharged filter capacitors of the circuit card provide
low impedance to the live backplane. High inrush currents
from the backplane to the circuit card can burn up connec-
tors and components, or momentarily collapse the back-
plane power supply leading to a system reset. The
MAX5927A/MAX5929A–MAX5929D hot-swap controllers
prevent such problems by gradually ramping up the output
voltage and regulating the current to a preset limit when the
board is plugged in, allowing the system to stabilize safely.
After the startup cycle is complete, on-chip comparators
provide VariableSpeed/BiLevel™ protection against short-
circuit and overcurrent faults, and provide immunity against
system noise and load transients. The load is disconnected
in the event of a fault condition. The MAX5929C/
MAX5929D automatically restart after a fault condition,
while the MAX5929A/MAX5929B must be unlatched. The
MAX5927A fault management mode is selectable.
The MAX5927A/MAX5929A–MAX5929D offer a variety of
options to reduce external component count and design
time. All devices integrate an on-board charge pump to
drive the gates of low-cost external n-channel MOSFETs,
an adjustable startup timer, and an adjustable current
limit. The devices offer integrated features like startup
current regulation and current glitch protection to elimi-
nate external timing resistors and capacitors. The
MAX5929B/MAX5929D provide an open-drain, active-low
status output for each channel, the MAX5929A/
MAX5929C provide an open-drain, active-high status out-
put for each channel, and the MAX5927A status output
polarity is selectable.
The MAX5927A is available in a 32-pin thin QFN package
and the MAX5929A–MAX5929D are available in a 24-pin
QSOP package. All devices are specified over the -40°C
to +85°C extended temperature range.
19-4087; Rev 0; 5/08
VariableSpeed/BiLevel is a trademark of Maxim Integrated
Products, Inc.
PCI Express is a registered trademark of PCI-SIG Corp. trademark
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.
PCI Express
Hot Plug-In Daughter Cards
RAID
Power-Supply
Sequencing/Tracking
®
Hot Plug
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Maxim Integrated Products
General Description
Basestation Line Cards
Portable Computer Device
Bays (Docking Stations)
Network Switches, Routers,
Hubs
Applications
Controllers/Power Sequencers
Low-Voltage, Quad, Hot-Swap
o Safe Hot Swap for +1V to +15V Power Supplies
o Adjustable Circuit-Breaker/Current-Limit
o Configurable Tracking, Sequencing, or
o VariableSpeed/BiLevel Circuit-Breaker Response
o Internal Charge Pumps Generate n-Channel
o Inrush Current Regulated at Startup
o Autoretry or Latched Fault Management
o Programmable Undervoltage Lockout
o Status Outputs Indicate Fault/Safe Condition
* EP = Exposed pad.
+ Denotes a lead-free/RoHS-compliant package.
Selector Guide and Typical Operating Circuit appear at end
of data sheet.
MAX5927AETJ+
MAX5929AEEG+
MAX5929BEEG+
MAX5929CEEG+
MAX5929DEEG+
Pin Configurations continued at end of data sheet.
with Any Input Voltage (V
Threshold from 25mV to 100mV
Independent Operation Modes
MOSFET Gate Drives
TOP VIEW
SENSE1
SENSE4
PART
GATE1
GATE4
STAT1
LIM4
IN1
IN4
1
2
3
4
5
6
7
8
+
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
THIN QFN
MAX5927A
Pin Configurations
IN_
≥ 2.7V)
32 Thin QFN-EP*
24 QSOP
24 QSOP
24 QSOP
24 QSOP
PIN-PACKAGE
Features
24
23
22
21
20
19
18
17
IN2
SENSE2
GATE2
LIM3
N.C.
IN3
SENSE3
GATE3
1

Related parts for MAX5929AEEG+

MAX5929AEEG+ Summary of contents

Page 1

... Internal Charge Pumps Generate n-Channel MOSFET Gate Drives o Inrush Current Regulated at Startup o Autoretry or Latched Fault Management o Programmable Undervoltage Lockout o Status Outputs Indicate Fault/Safe Condition PART MAX5927AETJ+ MAX5929AEEG+ MAX5929BEEG+ MAX5929CEEG+ MAX5929DEEG Exposed pad. + Denotes a lead-free/RoHS-compliant package. Selector Guide and Typical Operating Circuit appear at end of data sheet. ...

Page 2

Low-Voltage, Quad, Hot-Swap Controllers/Power Sequencers ...

Page 3

ELECTRICAL CHARACTERISTICS (continued +1V to +15V provided at least one supply is larger than or equal to +2.7V, T IN_ Typical values are 12.0V, V IN1 IN2 PARAMETER SYMBOL MOSFET DRIVER Startup Period (Note 5) ...

Page 4

Low-Voltage, Quad, Hot-Swap Controllers/Power Sequencers ELECTRICAL CHARACTERISTICS (continued +1V to +15V provided at least one supply is larger than or equal to +2.7V, T IN_ Typical values are 12.0V, V IN1 IN2 PARAMETER SYMBOL LOGIC ...

Page 5

Typical Operating Circuit , Fairchild FDB7090L, V +25°C, unless otherwise noted. Channels 1 through 4 are identical in performance. Where characteristics are interchangeable, channels 1 through 4 are referred to as ...

Page 6

Low-Voltage, Quad, Hot-Swap Controllers/Power Sequencers ( Typical Operating Circuit , Fairchild FDB7090L, V +25°C, unless otherwise noted. Channels 1 through 4 are identical in performance. Where characteristics are interchangeable, channels 1 through ...

Page 7

Typical Operating Circuit , Fairchild FDB7090L, V +25°C, unless otherwise noted. Channels 1 through 4 are identical in performance. Where characteristics are interchangeable, channels 1 through 4 are referred to as ...

Page 8

Low-Voltage, Quad, Hot-Swap Controllers/Power Sequencers PIN NAME MAX5929A– MAX5927A MAX5929D 1 4 IN1 2 5 SENSE1 3 6 GATE1 4 — LIM4 5 7 IN4 6 8 SENSE4 7 9 GATE4 8 10 STAT1 9 11 STAT2 10 12 TIM ...

Page 9

PIN NAME MAX5929A– MAX5927A MAX5929D 22 20 GATE2 23 21 SENSE2 24 22 IN2 25 — LIM2 26 23 ON4 27 24 ON3 28 1 MODE 29 — POL 30 2 ON2 31 3 ON1 32 — LIM1 EP — ...

Page 10

Low-Voltage, Quad, Hot-Swap Controllers/Power Sequencers R LIM1 LIM1* IN1 V V SC SENSE1 FAST COMP. SENSE1 SLOW COMP. GATE1 CHARGE Q1 PUMP OUT1 SLOW DISCHARGE FAST DISCHARGE 3mA/ 50mA 100μA STAT1 LIM3* R LIM3 IN3 V ...

Page 11

ON1 ON2 ON3 ON4 ANY IN_ IN2 IN3 IN4 *THE OUT_ DISCHARGE RATE IS A RESULT OF NATURAL DECAY OF THE LOAD RESISTANCE AND CAPACITANCE. Figure 2. Voltage-Tracking Timing Diagram (Provided ...

Page 12

Low-Voltage, Quad, Hot-Swap Controllers/Power Sequencers ON1 ON2 ON3 ON4 ANY IN_ IN2 IN3 IN4 OUT1 OUT2 OUT3 OUT4 *THE OUT_ DISCHARGE RATE IS A RESULT OF NATURAL DECAY OF THE LOAD RESISTANCE AND CAPACITANCE. Figure 3. Power-Sequencing Timing Diagram (Provided ...

Page 13

ON1 = ON2 = ON3 = ON4 OVERCURRENT FAULT CONDITION OUT1 OUT2 OUT3 OUT4 *THE OUT_ DISCHARGE RATE IS A RESULT OF NATURAL DECAY OF THE LOAD RESISTANCE AND CAPACITANCE. Figure 4. Power-Sequencing Fault Turn-Off The MAX5927A/MAX5929A–MAX5929D turn off all ...

Page 14

Low-Voltage, Quad, Hot-Swap Controllers/Power Sequencers ON1 ON2 ON3 ON4 IN1 IN2 IN3 IN4 t D, UVLO OUT1 OUT2 OUT3 OUT4 * THE OUT_ DISCHARGE RATE IS A RESULT OF NATURAL DECAY OF THE LOAD RESISTANCE AND CAPACITANCE. Figure 5. Independent ...

Page 15

ON_ STAT_ t START GATE_ V OUT_ V FC,TH R SENSE_ I LOAD_ t ON Figure 6. Independent Mode Startup Waveforms Slow-Comparator Startup Period The slow comparator is disabled during the startup period while the external MOSFETs ...

Page 16

Low-Voltage, Quad, Hot-Swap Controllers/Power Sequencers Table 2. Selecting Fault Management Mode (MAX5927A) LATCH FAULT MANAGEMENT Unconnected Fault condition latches MOSFETs off Low Autoretry mode Table 3. Selecting STAT_ Polarity (MAX5927A) POL Low Asserts low Unconnected Asserts high (open drain) t ...

Page 17

Table 4. Status Output Truth Table: Voltage-Tracking and Power-Sequencing Modes CHANNEL 1 PART FAULT Yes X MAX5927A (POL = 1), MAX5929B/ X MAX5929D X No Yes X MAX5927A (POL = X 0), MAX5929C/ X MAX5929D Low, ...

Page 18

Low-Voltage, Quad, Hot-Swap Controllers/Power Sequencers Table 6. Recommended n-Channel MOSFETs PART NUMBER IRF7413 IRF7401 IRL3502S MMSF3300 MMSF5N02H MTB60N05H FDS6670A ND8426A FDB8030L Table 7. Component Manufacturers COMPONENT MANUFACTURER Vishay/Dale Resistors Sense Resistors IRC, Inc. International Rectifier MOSFETs Fairchild Semiconductor On Semiconductor ...

Page 19

R SENSE_ V IN_ R PULLUP IN_ SENSE_ MAX5927A STAT_ MAX5929A MAX5929B MAX5929C ON_ MAX5929D GND Figure 9. Operating with an External Gate Capacitor Startup Sequence There are two ways of completing the startup sequence. Case A describes a startup ...

Page 20

Low-Voltage, Quad, Hot-Swap Controllers/Power Sequencers OFF GND V Z Figure 11. Power Sequencing: Channel Z Turns On t With a 22nF gate capacitor, the inrush current, charge, and discharge times are: μ ...

Page 21

The maximum inrush current in this case is INRUSH R SENSE Figure 6 shows the waveforms and timing diagrams for a startup transient with current regulation (see the Typical Operating Characteristics ). When operating ...

Page 22

Low-Voltage, Quad, Hot-Swap Controllers/Power Sequencers Layout Considerations To take full tracking advantage of the switch response time to an output fault condition important to keep all traces as short as possible and to maximize the high-current trace dimensions ...

Page 23

... PART MAX5927AETJ+ Programmable MAX5929AEEG+ Fixed MAX5929BEEG+ Fixed MAX5929CEEG+ Fixed MAX5929DEEG+ Fixed Pin Configurations (continued) TOP VIEW + MODE 1 ON2 2 ON1 3 IN1 4 MAX5929A– SENSE1 5 MAX5929D GATE1 6 IN4 7 SENSE4 8 GATE4 9 STAT1 10 STAT2 11 TIM 12 QSOP Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied ...

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