MIC2584-JBTS Micrel Inc, MIC2584-JBTS Datasheet

IC CTRLR HOT SWAP DUAL 16-TSSOP

MIC2584-JBTS

Manufacturer Part Number
MIC2584-JBTS
Description
IC CTRLR HOT SWAP DUAL 16-TSSOP
Manufacturer
Micrel Inc
Type
Hot-Swap Controllerr
Datasheet

Specifications of MIC2584-JBTS

Applications
General Purpose
Internal Switch(s)
No
Voltage - Supply
1 V ~ 13.2 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-TSSOP
Linear Misc Type
Positive Low Voltage
Family Name
MIC2584
Package Type
TSSOP
Operating Supply Voltage (min)
1V
Operating Supply Voltage (max)
13.2V
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Product Depth (mm)
4.4mm
Product Height (mm)
0.9mm
Product Length (mm)
5mm
Mounting
Surface Mount
Pin Count
16
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MIC2584-JBTS
Manufacturer:
MIC
Quantity:
23
Part Number:
MIC2584-JBTS
Manufacturer:
MICREL
Quantity:
240
Part Number:
MIC2584-JBTS
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
General Description
The MIC2584 and MIC2585 are dual-channel positive volt-
age hot swap controllers designed to facilitate the safe
insertion of boards into live system backplanes. The MIC2584
and MIC2585 are available in 16-pin and 24-pin TSSOP
packages, respectively. Using a few external discrete com-
ponents and by controlling the gate drives of external N-
Channel MOSFET devices, the MIC2584/85 provides inrush
current limiting and output voltage slew rate control in harsh,
critical power supply environments. Additionally, the MIC2585
provides output turn-on sequencing and output tracking
during turn-on and turn-off. In combination, the devices’
many features provide a simplified, robust solution for many
network applications to meet the power sequencing and
protection requirements of multiple-voltage logic systems.
Ordering Information
* Contact Micrel for availability.
March 2005
MIC2584/2585
MIC2584-xBTS
MIC2585-1xBTS
MIC2585-2xBTS
Standard
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Part Number
MIC2584-xYTS
MIC2585-1xYTS
MIC2585-2xYTS
Pb-Free
Output Sequencing
OUT2 follows OUT1
OUT1 follows OUT2
N/A
1
x = J, 100mV
x = K, 150mV *
x = L, 200mV *
Fast Circuit Breaker
Features
• 1.0V to 13.2V supply voltage operation
• Surge voltage protection up to 20V
• Current regulation limits inrush current regardless of
• Programmable inrush current limiting
• Electronic circuit breaker
• Dual-level overcurrent fault sensing eliminates false
• Fast response to short circuit conditions (< 1 s)
• Two sequenced output mode selections
• Overvoltage and undervoltage output monitoring
• Undervoltage lockout protection
• /FAULT status output
• Power-On Reset and Power-Good status output
Applications
• RAID systems
• Network servers
• Base stations
• Network switches
• Hot-board insertion
Dual-Channel Hot Swap Controller/Sequencer
x = M, Off *
load capacitance
tripping
(MIC2585 only)
(MIC2585 only)
(Overvoltage for MIC2585 only)
(Power-Good for MIC2585 only)
250mV supply tracking mode during turn-on/turn-off
Threshold
MIC2584/MIC2585
16-pin TSSOP
24-pin TSSOP
Package
MIC2584/2585
Micrel

Related parts for MIC2584-JBTS

MIC2584-JBTS Summary of contents

Page 1

... General Description The MIC2584 and MIC2585 are dual-channel positive volt- age hot swap controllers designed to facilitate the safe insertion of boards into live system backplanes. The MIC2584 and MIC2585 are available in 16-pin and 24-pin TSSOP packages, respectively. Using a few external discrete com- ...

Page 2

... Overvoltage (Input1) = 13.2V Overvoltage (Input2) = 3.65V START-UP Delay = 2.5ms POR Delay = 10ms Circuit Breaker Response Time = 16ms *C5 (optional) is used to set the delay for V V Delay = 9.5ms OUT2 **D1 is BZX84C18 and D2 is BZX84C8V2 Resistor tolerances are 5% unless specified otherwise. MIC2584/2585 R **BZX84Cxx SENSE1 0.006 ...

Page 3

... CDLY 12 13 GND MIC2585 24-Pin TSSOP (TS) and V CC1 and V exceed their CC1 CC2 (50mV) is exceeded for longer than time period , at any point due to fast, TRIPFAST disabled). Please contact TRIPFAST < 1.21V), the GATE pins are ON MIC2584/2585 Micrel CC2 . This CC1 ...

Page 4

... OUT2, OUT1 N/A 12 N/A 9 MIC2584/2585 Pin Function Gate Drive (Outputs): Connect each output to the gates of external N-Channel MOSFETs. When ON is asserted current source is activated and begins to charge the gate of the N-Channel MOSFET connected to this pin. An internal clamp ensures that no more than 10V is applied between the GATE and Source when VCC1 or VCC2 is above 5V ...

Page 5

... Power-Good Outputs: Active-HIGH, weak pull-up to VCC1 or open-drain. These outputs are asserted whenever the FB1 and FB2 thresholds are exceeded and will not be asserted when FB1 and FB2 are below their thresholds. 5 Micrel , OV1 OV2 dependent upon input supply Fast MIC2584/2585 ...

Page 6

... GATE Pin Sink Current GATEOFF R Discharge Pin Resistance DIS I Overcurrent Timer Pin Charge TMR Current Overcurrent Timer Pin Discharge Current V Overcurrent Timer Pin Threshold TMR MIC2584/2585 Operating Ratings (Note1) Supply Voltage V CC1 ......................................................................... V CC2 ......................................................................... CC1/2 Operating Temperature Range .................. – +85 C Package Thermal Resistance R JA) R ...

Page 7

... Low Trip Time Note 1. Exceeding the absolute maximum rating may damage the device. Note 2. The device is not guaranteed to function outside its operating rating. Note 3. For the MIC2584 specified only when ON is asserted. GATEWIN Note 4. Specification for packaged product only. March 2005 ...

Page 8

... MIC2584/2585 Timing Diagrams Figure 2. Gate Voltage Window — Tracking Mode (V – V CCx MIC2584/2585 GATE1 GATE2 ON GATE1 ON GATE2 ON 100mV GATE1 ON GATE1 OFF GATE2 OFF GATE2 ON OFF VOUT1 - VOUT2 ON Pin Asserted ON GATE1 OFF GATE2 OFF 100mV GATE1 ON GATE1 OFF GATE2 OFF GATE2 ON OFF ...

Page 9

... CC2 V = 2.3V CC2 -40 - 100 TEMPERATURE ( C) UVLO1 and UVLO2 vs. Temperature 2.5 UVLO1+ 2.25 2 UVLO1– 1.75 1.5 1.25 1 UVLO2+ 0.75 UVLO2– 0.5 -40 - 100 TEMPERATURE ( C) CPOR Threshold2 vs. Temperature 1.3 1. 13.2V CC2 CC2 1.24 1. 2.3V CC2 1.2 -40 - 100 TEMPERATURE ( C) MIC2584/2585 ...

Page 10

... TEMPERATURE ( C) Active Output Pull-Up Current vs. Temperature 2 13. 5. 2.3V CC 2.5 2.4 -40 - 100 TEMPERATURE ( C) MIC2584/2585 Overvoltage2 vs. Temperature 0.85 0.83 0. 13.2V CC2 0. 2.3V 0.75 CC2 CC2 0.73 0.71 -40 - 100 TEMPERATURE ( C) Output Low Voltage vs. Temperature 0.4 ...

Page 11

... Test Circuit INx C INx 4 – INx C DLY (optional) March 2005 R SENSEx IRF7822 0.005 (SO- 33k SENSEx VCCx GA TEx 0. MIC2585 OUTx CDLY FBx CFILTER CPOR 8200pF GND 0.1 F (Not all pins shown for simplicity OUT V + OUTx R LOAD C LOAD V – OUTx R1 R2 MIC2584/2585 Micrel ...

Page 12

... MIC2584/2585 Functional Characteristics Turn-On (No Delay) TIME (5ms/div.) Turn-On (Channel 2) TIME (5ms/div.) Turn-Off (Tracking Off) TIME (500 s/div.) MIC2584/2585 CC1 V = 3.3V CC2 220 CC1 = V 3.3V CC2 = 220 CC1 = V 3.3V CC2 = 2200 220 Turn-On, Staggered Mode (MIC2585-1BTS CC1 V = 3.3V CC2 C = 47nF DLY ...

Page 13

... L1 L2 Short-Circuit Response 6.04A peak TIME (25 s/div.) 13 Power-On Reset Response 22.5ms V CC1 = V CC2 = 220 47nF POR TIME (5ms/div.) Short-Circuit Crowbar Channel 2 V CC1 V = 3.3V CC2 R = 3.5 3.88A peak 220 TIME (10 s/div CC1 = V 3.3V CC2 = open 2200 220 F L2 Micrel 5V 3.3V =3 MIC2584/2585 ...

Page 14

... UVLO2 0.8V 2.165V + – Logic + Glitch Filter – + Glitch Filter – + – + – + – + – Pin numbers for MIC2584 are in parenthesis ( ) where applicable 14 Charge 22 (14) Pump GATE1 1 21V Charge 3 (3) Pump GATE2 2 21V 20 (13) Up & Down OUT1 Tracking 5 (4) OUT2 19 DIS1 ...

Page 15

... Power Supply VCC1 is the main supply input to the MIC2584/85 controller with a voltage range of 2.3V to 13.2V. The VCC2 supply input ranges from 1.0V to 13.2V and must be less than or equal to VCC1 for operation. Both inputs can withstand transient spikes up to 20V ...

Page 16

... LOAD I LIMIT Where C is the summation of the MOSFET input capaci- GATE tance (C ) specification and the value of the capacitor ISS connected to the GATE pin of the MIC2584/85 (and MOSFET) to ground. Once C is determined, use the following GATE equation to determine the dV /dt for gate capacitance dominated start-up: ...

Page 17

... Table 4. Selected Sequenced Output Delays 500ms FILTER OCSLOW 220pF 110 s 680pF 340 s 1000pF 500 s 3300pF 1.6ms 0.01 F 5ms 0.047 F 23.5ms 0.1 F 50ms 0.33 F 165ms C t DLY DLY 4700pF 950 s 0.01 F 2ms 0.047 F 9.5ms 0.1 F 20ms 0.33 F 66ms 0.82 F 165ms 1 F 200ms 2.2 F 440ms MIC2584/2585 Micrel ...

Page 18

... MOSFET for Channel 1 and Channel 2, respectively. The MIC2584/85 can also be used in systems that support more than two supplies. Figure 7 illustrates the generic use of two separate controllers configured to support four inde- pendent supply rails with an associated output timing re- sponse ...

Page 19

... V ON IN2 V /V OUT1 OUT2 V OUT2 PG V IN3 /FAULT V OUT3 V IN4 V /V OUT3 OUT4 V OUT4 Figure 7. Supporting More Than Two Supplies 19 Micrel allows for DLY 20ms later. Once the ON OUT2 to ground while OUT2 (680 Short Circuit on V OUT1 System Timing MIC2584/2585 ...

Page 20

... R13) at the FB1 pin, shown in the typical application circuit on page 1, use the following iterative design proce- dure. 1) Choose R13 limit the current through the divider to approximately 100 A or less. V 1.29V FB1(MAX) R13 12.9k 100 A 100 A R13 is chosen as 14.7k 1%. MIC2584/2585 R SENSE1 0.012 SENSE2 0.012 IRF7822 ...

Page 21

... LOW at the /ON_OFF signal turns Q2 off and allows the ON pin to pull up above its threshold and initiate a start-up cycle. Applying a logic HIGH at the /ON_OFF signal will turn Q2 on and short the ON pin of the MIC2584/85 to ground which turns off the GATE output charge pump. R SENSE1 ...

Page 22

... The current limit threshold voltage (i.e., the “trip point”) for the MIC2584/85 may be as low as 42.5mV, which would equate to a sense resistor value of 42.5mV/I numbers through for the case where the value of the sense ...

Page 23

... The next lowest bit subtler than simple drain-source breakdown voltage, but is not hard to meet. In MIC2584/85 applications, the gate of the external MOSFET is driven up to approximately 20V by the internal output MOSFET (again, assuming 12V operation). At the same time, if the output of the external MOSFET (its source) ...

Page 24

... MOSFET’s ability to handle short-term overload power dissi- pation without overheating. A MOSFET can handle a much R Q1 SENSE1 0.006 IRF7822 5% (SO- VCC1 SENSE1 14 GATE1 MIC2584 FB1 11 DOWNSTREAM /POR SIGNAL CPOR GND 0.05 F Figure 12. Zener Clamped MOSFET Gate 24 10m [1 + (110 - 25)(0.005)] 14.3m *D2 1N5240B 10V V OUT 12V@6A C LOAD1 ...

Page 25

... C + (0.02815W)(50 C/W) J 54.6 C equal to the already calculated value of 54 [17m + (54.6 C-25 C)(0.005)(17m )] (1.2A) x (50 C/ (0.02832W)(50 C/ This is an acceptable J(TRANSIENT MAX.) Notes Duty Cycle ¡ 2. Per Unit Base = C/W thJA ( — thJA 4. Surface Mounted Micrel ) in which the ) from 56.42 C MIC2584/2585 ...

Page 26

... MIC2584/2585 PCB Layout Considerations Because of the low values of the sense resistors used with the MIC2584/85 controllers, special attention to the layout must be used in order for the device’s circuit breaker function to operate properly. Specifically, the use of a 4-wire Kelvin connection to accurately measure the voltage across R is highly recommended ...

Page 27

... Contact Information 10A www.siliconix.com = 10A-15A (203) 452-5664 CC 3A 12A 15A 15A 20A 20A 10A www.irf.com 10A (310) 322-3331 = 10A-15A 20A 10A www.fairchildsemi.com 10A (207) 775-8100 CC 20A www.philips.com 20A www.halsp.hitachi.com (408) 433-1990 Contact Information www.vishay.com/docswsl_30100.pdf (203) 452-5664 www.irctt.com/pdf_files/OARS.pdf www.irctt.com/pdf_files/LRC.pdf (828) 264-8861 Micrel MIC2584/2585 ...

Page 28

... A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify MIC2584/2585 16-Pin TSSOP (TS) 4 ...

Related keywords