MAX5916AEUI+ Maxim Integrated Products, MAX5916AEUI+ Datasheet

IC HOT-SWAP CTRLR DUAL 28-TSSOP

MAX5916AEUI+

Manufacturer Part Number
MAX5916AEUI+
Description
IC HOT-SWAP CTRLR DUAL 28-TSSOP
Manufacturer
Maxim Integrated Products
Type
Hot-Swap Controllerr
Datasheet
1.MAX5916EUI.pdf (25 pages)

Specifications of MAX5916AEUI+

Applications
PCI 2.2 Server
Internal Switch(s)
No
Voltage - Supply
10.8 V ~ 13.2 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
28-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX5915/MAX5915A/MAX5916/MAX5916A dual
PCI 2.2 hot-swap controllers allow for safe insertion and
removal of two PCI cards into live PCI slots or back-
planes by limiting the inrush current at startup. After
startup, these devices provide protection against short-
circuit, overcurrent, and undervoltage conditions.
The MAX5915/MAX5915A/MAX5916/MAX5916A pro-
vide independent power controls for +3.3V, +5V, ±12V,
and +3.3V auxiliary supplies of two PCI cards. These
devices provide intelligent selective thermal shutdown
control that shuts down the channel with an overcurrent
fault. All devices include internal power MOSFETs for the
+12V, -12V, and +3.3V auxiliary outputs. These devices
use internal charge pumps to activate the gates of the
internal FETs controlling the +3.3V auxiliary supply.
Internal FETs and current-sense circuitry regulate the
±12V and the +3.3V auxiliary supplies. Channels A and B
operate independently, allowing a single device to moni-
tor two PCI card slots.
The MAX5915/MAX5915A offer latched fault protection
and the MAX5916/MAX5916A offer autorestart fault pro-
tection. The devices are available in the low-profile
28-pin TSSOP package.
19-2420; Rev 2; 9/05
*Contact factory for availabilty.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX5916AUUI
MAX5915EUI*
MAX5915UUI
MAX5915AEUI*
MAX5915AUUI
MAX5916EUI*
MAX5916UUI
MAX5916AEUI*
PART
4.7µF⎥⎥ 0.1µF
________________________________________________________________ Maxim Integrated Products
+12V
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
0°C to +85°C
0°C to +85°C
0°C to +85°C
0°C to +85°C
Ordering Information
General Description
4.7µF⎥⎥ 0.1µF
OFF
-12V
10kΩ
ON
Dual PCI 2.2 Hot-Swap Controllers
4.7µF⎥⎥ 0.1µF
+3.3VAUX
OFF
10kΩ
PIN-PACKAGE
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
ON
+12VIN
-12VIN
3.3VAUXIN
ON_
AUXON_
+3.3V
+5V
FAIRCHILD
FDS6670A
3.3VGATE_
3.3VSEN_
0.005Ω
MAX5915A
MAX5916A
MAX5915
MAX5916
3.3VO_
♦ PCI 2.2 Compliant
♦ Independent Power Controls for +3.3V, +5V, ±12V,
♦ Internal MOSFET Switches for ±12V and +3.3V
♦ Separate ON/OFF Control Input for Each Channel
♦ Independent +3.3V Auxiliary Output ON/OFF
♦ Overcurrent Foldback with Timeout and Shutdown
♦ Brick Wall with Timeout and Shutdown Protection
♦ Output Undervoltage Monitoring for +3.3V, +5V,
♦ +3.3V Auxiliary Autorestart
♦ Intelligent Selective Thermal Shutdown Control
♦ 28-Pin TSSOP Package
Selector Guide, Pin Configuration, Functional Diagram, and
Typical Operating Circuit appear at end of data sheet.
GND
FAIRCHILD
FDS6670A
and +3.3V Auxiliary Supplies of Two PCI Cards
Auxiliary Outputs
Control
Protection for ±12V and +3.3V Auxiliary Rails with
Status Report
for +5V and +3.3V Rails with Status Report
+12V, and +3.3V Auxiliary Rails with Status Report
Shuts Down Only the Channel with an Overcurrent
Fault
5VGATE_
PCI 2.2 Server
PCI Server
RAID
5VSEN_
0.005Ω
Typical Application Circuit
5VO_
3.3VAUXO_
PGOOD_
+12VO_
-12VO_
470µF
47µF
470µF
5V
47µF
Applications
47µF
Features
1

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MAX5916AEUI+ Summary of contents

Page 1

... ON OFF 10kΩ ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ♦ PCI 2.2 Compliant ♦ Independent Power Controls for +3.3V, +5V, ±12V, and +3.3V Auxiliary Supplies of Two PCI Cards ♦ ...

Page 2

Dual PCI 2.2 Hot-Swap Controllers ABSOLUTE MAXIMUM RATINGS +12VIN to GND ...................................................-0.3V to +14.0V -12VIN to GND........................................................-14V to +0.3V -12VO_ to GND......................................+0. +12VO_, 3.3VGATE_, 5VGATE_ to GND..................................................-0. Any Other Pin to GND ...........................................-0.3V to +6.0V Continuous ...

Page 3

Dual PCI 2.2 Hot-Swap Controllers ELECTRICAL CHARACTERISTICS (continued -12V +12V, V -12VIN +12VIN 3.3VAUXIN Typical values are +25°C.) A PARAMETER +5V SUPPLY CONTROL Gate Charge Current I 5VGATE Gate Discharge Current I 5VGATE ...

Page 4

Dual PCI 2.2 Hot-Swap Controllers ELECTRICAL CHARACTERISTICS (continued -12V +12V, V -12VIN +12VIN 3.3VAUXIN Typical values are +25°C.) A PARAMETER On-Resistance of Internal Switch R DS(ON), 3.3VAUX Foldback Current Limit I 3.3VAUXIN, LIM ...

Page 5

Dual PCI 2.2 Hot-Swap Controllers (V = +12V +3.3V, V +12VIN 3.3VAUXIN +12VO_ VOLTAGE vs. OUTPUT CURRENT 12.1 12.0 11.9 11.8 11.7 11.6 11.5 11.4 0 0.5 1.0 1.5 OUTPUT CURRENT (A) -12VO_ CURRENT FOLDBACK vs. DIFFERENTIAL SWITCH ...

Page 6

Dual PCI 2.2 Hot-Swap Controllers (V = +12V +3.3V, V +12VIN 3.3VAUXIN 3.3VAUX_ CURRENT FOLDBACK vs. DIFFERENTIAL SWITCH VOLTAGE 800 750 700 650 600 550 500 1.0 1.5 0 0.5 2.0 2.5 3 (V) 3.3VAUXIN ...

Page 7

Dual PCI 2.2 Hot-Swap Controllers (V = +12V +3.3V, V +12VIN 3.3VAUXIN +12VIN SUPPLY CURRENT vs. TEMPERATURE 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 -40 - TEMPERATURE (°C) +12V OUTPUT UNDERVOLTAGE ...

Page 8

Dual PCI 2.2 Hot-Swap Controllers (V = +12V +3.3V, V +12VIN 3.3VAUXIN +12V OUTPUT CURRENT FOLDBACK vs. TEMPERATURE 1.2 1.1 1.0 0.9 0.8 0.7 0.6 -40 - TEMPERATURE (°C) 3.3V AUXILIARY CURRENT FOLDBACK vs. TEMPERATURE ...

Page 9

V = +3.3V, V +12VIN 3.3VAUXIN AUXILIARY SUPPLY TURN-OFF WAVEFORMS MAX5915 toc37 ON_ 5V/div 3.3VAUXO_ 2V/div PGOOD_ 5V/div 20ms/div MAIN SUPPLY AUTORESTART FAULT MANAGEMENT MAX5915 toc40 +12VO_ 5V/div 5VO_ 2V/div 3.3VAUXO_ 5V/div PGOOD_ 5V/div 400ms/div +12VO_ CURRENT ...

Page 10

Dual PCI 2.2 Hot-Swap Controllers (V = +12V +3.3V, V +12VIN 3.3VAUXIN 5VO_ IMMEDIATE SHORT-CIRCUIT RESPONSE MAX5915 toc46 5VO_ 5V/div I 5VO_ 10A/div FAIRCHILD FDS6670A PGOOD_ 5V/div 40µs/div 3.3VO_ CURRENT LIMIT MAX5915 toc49 3.3VO_ 2V/div I 3.3VO_ 10A/div ...

Page 11

Dual PCI 2.2 Hot-Swap Controllers PIN NAME 1 +12VOA Channel A +12V Output 2 3.3VGATEA Channel A +3.3V External N-Channel MOSFET Gate Drive. 3.3VGATEA driven by +12VIN. 3 3.3VSENA Channel A External 3.3V Current-Sense Input 4 3.3VOA Channel A +3.3V ...

Page 12

Dual PCI 2.2 Hot-Swap Controllers Table 1. PCI Standard Maximum Values SUPPLY VOLTAGE (V)* VOLTAGE TOLERANCE (%) +5 +3.3 +12 -12 +3.3 aux (enabled) +3.3 aux (disabled) *Supply voltage is referenced to the output of the MAX5915/MAX5916. Detailed Description The ...

Page 13

Dual PCI 2.2 Hot-Swap Controllers +12VIN 3.3VAUX UVLO THRESHOLD 3.3VAUXIN ON_ AUXON_ +12VO_ -12VO_ 5VO_ 3.3VO_ 3.3VAUXO_ PGOOD_ TIMING NOT TO SCALE Figure 1. Startup Waveforms channel outputs, auxiliary and main. A fault condition occurs when the output voltage falls ...

Page 14

Dual PCI 2.2 Hot-Swap Controllers +12V UVLO THRESHOLD +12VIN 3.3VAUXIN ON_ AUXON_ +12VO_ 5VO_ 3.3VO_ -12VO_ 3.3VAUXO_ PGOOD_ t DEG.UVLO TIMING NOT TO SCALE Figure 2. Input UVLO Fault Management in the MAX5915/MAX5915A/MAX5916/MAX5916A Input Undervoltage Lockout UVLO prevents these devices ...

Page 15

Dual PCI 2.2 Hot-Swap Controllers ENABLE_+12VIN STARTUP_+12VIN ENABLE_3.3VAUXIN STARTUP_3.3VAUXIN OC_3.3VAUXO_ UV_3.3VAUXO_ OC_3.3VO_ OC_5VO_ t DELAY OC_+12VO_ OC_-12VO_ UV_3.3VO_ UV_5VO_ UV_+12VO_ SEE TABLE 2 FOR EXPLANATION OF SIGNALS. Figure 3. Main and Auxiliary Supply Shutdown Control Logic for MAX5915/MAX5915A Output Undervoltage ...

Page 16

Dual PCI 2.2 Hot-Swap Controllers ENABLE_+12VIN STARTUP_+12VIN ENABLE_3.3VAUXIN STARTUP_3.3VAUXIN OC_3.3VAUXO_ UV_3.3VAUXO_ OC_3.3VO_ OC_5VO_ OC_+12VO_ OC_-12VO_ UV_3.3VO_ UV_5VO_ UV_+12VO_ SEE TABLE 2 FOR EXPLANATION OF SIGNALS. Figure 4. Main and Auxiliary Supply Shutdown Control Logic for MAX5916/MAX5916A Applications Information Component Selection ...

Page 17

Dual PCI 2.2 Hot-Swap Controllers Table 2. Logic Diagram Signal Descriptions SIGNAL NAME Signal is HIGH: 1. +12VIN > V Enable_+12VIN 2. ON_ = HIGH 3. Thermal shutdown NOT active Signal is HIGH: 1. +12VIN > V Startup_+12VIN 2. ON_ ...

Page 18

Dual PCI 2.2 Hot-Swap Controllers +12VIN +12V UVLO THRESHOLD OVERCURRENT THRESHOLD IOUT (+12VO_, 5VO_, 3.3VO-, OR -12VO_) ON_ +12VO_ 5VO_ 3.3VO_ -12VO_ 3.3VAUXO_ PGOOD_ OUTPUT UNDERVOLTAGE FAULT HANDLING RESULTS IN SIMILAR RESPONSE. TIMING NOT TO SCALE FOR MAX5915A. ...

Page 19

Dual PCI 2.2 Hot-Swap Controllers +12VIN +12V UVLO THRESHOLD OVERCURRENT UVLO THRESHOLD IOUT (3.3VAUXO_) ON_ +12VO_ 5VO_ 3.3VO_ -12VO_ 3.3VAUXO_ PGOOD_ t (t RESP2 OUTPUT UNDERVOLTAGE FAULT HANDLING RESULTS IN SIMILAR RESPONSE. TIMING NOT TO SCALE FOR MAX5915A/MAX5916A. ...

Page 20

Dual PCI 2.2 Hot-Swap Controllers +12VIN +12V UVLO THRESHOLD OVERCURRENT THRESHOLD IOUT (+12VO_, 5VO_, 3.3VO_, OR- 12VO_) ON_ +12VO_ 5VO_ 3.3VO_ -12VO_ 3.3VAUXO_ PGOOD_ OUTPUT UNDERVOLTAGE FAULT HANDLING RESULTS IN SIMILAR RESPONSE. TIMING NOT TO SCALE FOR MAX5916A. ...

Page 21

Dual PCI 2.2 Hot-Swap Controllers t DEG t ON_ DEG t UVLO_+12VIN DEG, UVLO AUXON_ t DEG UVLO_3.3VAUXIN t DEG, UVLO OC_MAIN_OUTPUTS UV_MAIN_OUTPUTS OC_3.3VAUXO_ UV_3.3VAUXO_ Figure 8. PGOOD_ Logic Diagram ______________________________________________________________________________________ t DEG, UVLO t START t START t RESP ...

Page 22

Dual PCI 2.2 Hot-Swap Controllers Table 3. Component Manufacturers COMPONENT Dale-Vishay Sense Resistors IRC Fairchild MOSFETs International Rectifier Motorola HIGH-CURRENT PATH MAX5915 MAX5915A MAX5916 MAX5916A Figure 9. Kelvin Connections for Sense Resistors Selector Guide FAULT PART MANAGEMENT MAX5915EUI Latched MAX5915AEUI ...

Page 23

Dual PCI 2.2 Hot-Swap Controllers PCI CARD A PCI SLOT A +12V -12V 3.3VAUX +5V +3.3V GND ______________________________________________________________________________________ +12V 3.3VAUX -12V +12VIN 3.3VAUXIN -12VIN +12VOA +12VOB -12VOA -12VOB 3.3VAUXOA 3.3VAUXOB 5VOA 5VOB 5VSENA MAX5915 5VSENB MAX5915A 5VGATEA 5VGATEB MAX5916 ON ...

Page 24

Dual PCI 2.2 Hot-Swap Controllers 3.3V -12VOA +12VOA 3.3VGATEA CHANNEL A CONTROL 3.3VSENA R SENSE 3.3VOA 5V 5VGATEA 5VSENA R SENSE 5VOA V PULLUP ONA PGOODA AUXONA 3.3VAUXIN 3.3VAUXOA 24 ______________________________________________________________________________________ +12VIN -12VIN CHANNEL B CONTROL BIAS, BANDGAP REFERENCE, AND ...

Page 25

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 25 © 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...

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