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PDF ISL6146 Data sheet ( Hoja de datos )
| Número de pieza | ISL6146 | |
| Descripción | Low Voltage OR-ing FET Controller | |
| Fabricantes | Intersil | |
| Logotipo |  |
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Low Voltage OR-ing FET Controller
ISL6146
The ISL6146 represents a family of OR-ing MOSFET controllers
capable of OR-ing voltages from 1V to 18V. Together with suitably
sized N-channel power MOSFETs, the ISL6146 increases power
distribution efficiency when replacing a power OR-ing diode in high
current applications. It provides gate drive voltage for the
MOSFET(s) with a fully integrated charge pump.
The ISL6146 allows users to adjust with external resistor(s) the
VOUT - VIN trip point, which adjusts the control sensitivity to system
power supply noise. An open drain FAULT pin will indicate if a
conditional or FET fault has occurred.
The ISL6146A and ISL6146B are optimized for very low voltage
operation, down to 1V with an additional independent bias of 3V
or greater.
The ISL6146C provides a voltage compliant mode of operation
down to 3V with programmable Undervoltage Lock Out and
Overvoltage Protection threshold levels
The ISL6146D and ISL6146E are like the ISL6146A and ISL6146B
respectively but do not have conduction state reporting via the
fault output.
TABLE 1. KEY DIFFERENCES BETWEEN PARTS IN FAMILY
PART NUMBER
KEY DIFFERENCES
ISL6146A
Separate BIAS and VIN with Active High Enable
ISL6146B
Separate BIAS and VIN with Active Low Enable
ISL6146C
VIN with OVP/UVLO Inputs
ISL6146D
ISL6146A wo Conduction Monitor & Reporting
ISL6146E
ISL6146B wo Conduction Monitor & Reporting
Features
• OR-ing Down to 1V and Up to 20V with ISL6146A, ISL6146B,
ISL6146D and ISL6146E
• Programmable Voltage Compliant Operation with ISL6146C
• VIN Hot Swap Transient Protection Rating to +24V
• High Speed Comparator Provides Fast <0.3µs Turn-off in
Response to Shorts on Sourcing Supply
• Fastest Reverse Current Fault Isolation with 6A Turn-off
Current
• Very Smooth Switching Transition
• Internal Charge Pump to Drive N-channel MOSFET
• User Programmable VIN - VOUT Vth for Noise Immunity
• Open Drain FAULT Output with Delay
- Short between any two of the OR-ing FET Terminals
- GATE Voltage and Excessive FET VDS
- Power-Good Indicator (ISL6146C)
• MSOP and DFN Package Options
Applications
• N+1 Industrial and Telecom Power Distribution Systems
• Uninterruptable Power Supplies
• Low Voltage Processor and Memory
• Storage and Datacom Systems
Q1
+
VOLTAGE
DC/DC
(3V - 20V)
-
+
VIN GATE VOUT
BIAS
ADJ
ISL6146B
FLT
GND EN
Q2
VOLTAGE
DC/DC
(3V - 20V)
-
VIN GATE VVOOUUTT
BIAS
ADJ
ISL6146B
FLT
GND EN
FIGURE 1. TYPICAL APPLICATION
+C
O
M
M
O
N
P
O
W
E
R
B
U
S
+C
O
M
M
O
N
P
O
W
E
R
B
U
S
GATE FAST OFF, ~200ns FALL TIME
~70ns FROM 20V TO 12.6V ACROSS 57nF
GATE OUTPUT SINKING ~ 6A
FIGURE 2. ISL6146 GATE HIGH CURRENT PULL-DOWN
April 26, 2013
FN7667.4
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2011-2013. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
Free Datasheet http://www.datasheet4u.com/
1 page  
ISL6146
Table of Contents
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermal Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical Performance Curves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Applications Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Power-Up Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Typical Applications Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
ISL6146 Evaluation Platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Description and Use of the Evaluation Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
About Intersil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Package Outline Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
L8.3x3J. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
M8.118 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
5 FN7667.4
April 26, 2013
Free Datasheet http://www.datasheet4u.com/
5 Page 
ISL6146
Typical Performance Curves (Continued)
3
2
1
0
-1
-2
-3
-40
25
85 125
TEMPERATURE (°C)
FIGURE 15. HIGH SPEED COMPARATOR OFFSET VOLTAGE
300
280
260
240
220
200
180
160
140
120
100 -40
25 85
TEMPERATURE (°C)
125
FIGURE 16. HIGH SPEED COMPARATOR RESPONSE TIME
900
800 RADJ TO GND = 5kΩ
700
600
500
400
300
200
100 RADJ TO GND = 100kΩ
0
-40 25 85 125
TEMPERATURE (°C)
FIGURE 17. HS COMPARATOR ADJUSTABLE Vth
1.002
1.001
1.000
0.999
0.998
0.997
0.996
0.995
0.994
0.993
3
12
BIAS VOLTAGE (V)
18
FIGURE 18. EN/EN/OVP/UVLO Vth DELTA vs BIAS VOLTAGE
NORMALIZED TO BIAS = 12V
21.0
20.8
20.6
20.4
20.2
20.0
19.8
19.6
19.4
19.2
19.0
-40 25 85 125
TEMPERATURE (°C)
FIGURE 19. FORWARD VOLTAGE REGULATION
11
465
460
455
450
445
440
435
430
425
420 -40
25
85 125
TEMPERATURE (°C)
FIGURE 20. VIN TO VOUT FORWARD FAULT VOLTAGE
FN7667.4
April 26, 2013
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet ISL6146.PDF ] | |
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