ISL6118 Intersil Corporation, ISL6118 Datasheet

no-image

ISL6118

Manufacturer Part Number
ISL6118
Description
2.5V to 5V Dual Power Supply Controller With 0.6A Integrated Current Regulation And Timed Delay to Latch-off
Manufacturer
Intersil Corporation
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL6118HIB
Manufacturer:
INTERSIL
Quantity:
20 000
Part Number:
ISL6118HIBZA
Manufacturer:
INTERSIL
Quantity:
20 000
Dual Power Supply Controller
The ISL6118 is a dual channel, fully independent overcurrent
(OC) fault protection IC for the +2.5V to +5.5V environment.
This device features internal current monitoring, accurate
current limiting, integrated power switches and current
limited delay to latch-off for system protection.
The ISL6118 current sense and limiting circuitry sets the
current limit to a nominal 0.6A, which is well suited for the
3.3V AUX ACPI application. The ISL6118 is the ideal
companion chip to the HIP1011D and HIP1011E dual PCI
hot plug controllers. Together these and the ISL6118 fully
control the four legacy PCI voltages (+/-12V, +3.3V, +5V) and
the 3.3V AUX, respectively for power control of two PCI slots
compliant to PCI Bus Power Management Interface Spec
Rev 1.1. Designed to be co-located with the HIP1011D on
the motherboard, the ISL6118 provides OC fault notification,
accurate current limiting and a consistent timed latch-off thus
isolating and protecting the voltage bus in the presence of an
OC event or short circuit during all PCI Bus Power States as
defined by the PCI specification. The 12ms time to latch-off
is independent of the adjoining switch’s electrical or thermal
condition and the OC response time is inversely related to
the OC magnitude.
Each ISL6118 incorporates in a single 8-lead SOIC
package two 80m N-channel MOSFET power switches for
power control. Each switch is driven by a constant current
source giving a controlled ramp up of the output voltage.
This provides a soft start turn-on eliminating bus voltage
drooping caused by inrush current while charging heavy
load capacitances. Independent enabling inputs and fault
reporting outputs for each channel are compatible with 3V
and 5V logic to allow external control and monitoring.
The ISL6118 undervoltage (UV) feature prevents turn-on of
the outputs unless the correct ENABLE state and VIN >
2.5V are present. During initial turn-on the ISL6118
prevents fault reporting by blanking the fault signal. Rising
and falling outputs are current-limited voltage ramps so that
both the inrush current and voltage slew rate are limited,
independent of load. This reduces supply droop due to
surge and eliminates the need for external EMI filters.
During operation, once an OC condition is detected the
appropriate output is current limited for 12ms to allow
transient conditions to pass. If still in current limit after the
current limit period has elapsed, the output is latched off
and the fault is reported by pulling the corresponding
FAULT low. The FAULT signal is latched low until reset by
the ENABLE signal being de-asserted at which time the
FAULT signal will clear.
TM
1
1-888-INTERSIL or 321-724-7143
Data Sheet
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
|
Intersil and Design is a trademark of Intersil Americas Inc.
Features
• 80m Integrated Power N-Channel MOSFET Switches
• Accurate Current Sensing and Limiting
• 12ms Fault Delay to Latch-Off, No Thermal Dependency
• 2.5V to 5.5V Operating Range
• Disabled Output Internally Pulled Low
• Undervoltage Lockout
• Controlled Turn-On Ramp Time
• Channel Independent Fault Output Signals
• Compatible with 3.3V and 5V Logic Families
• Channel Independent Logic Level Enable High Inputs
Applications
• ACPI 3.3V AUX Control
• Electronic Circuit Limiting and Breaker
Ordering Information
Pinout
ISL6118LIB
ISL6118LIB-T
ISL6118HIB
ISL6118HIB-T
ISL6118EVAL1
ISL16AHPEVAL1
PART NUMBER
(ISL6118H) or Enable Low Inputs (ISL6118L)
ENABLE_1
ENABLE_2
May 2001
GND
VIN
ISL6118 Evaluation Platform
ACPI (HIP1011D and ISL6118H) Evaluation
Platform
TEMP. RANGE
-40 to 85
-40 to 85
-40 to 85
-40 to 85
1
2
3
4
ISL6118 (SOIC)
(
o
TOP VIEW
C)
|
File Number
Copyright © Intersil Americas Inc. 2001
8 Ld SOIC
8 Ld SOIC Tape and Reel
8 Ld SOIC
8 Ld SOIC Tape and Reel
PACKAGE
8
7
6
5
FAULT_1
OUT_1
OUT_2
FAULT_2
ISL6118
M8.15
M8.15
PKG. NO.
9008.1

Related parts for ISL6118

ISL6118 Summary of contents

Page 1

... TM Data Sheet Dual Power Supply Controller The ISL6118 is a dual channel, fully independent overcurrent (OC) fault protection IC for the +2.5V to +5.5V environment. This device features internal current monitoring, accurate current limiting, integrated power switches and current limited delay to latch-off for system protection. The ISL6118 current sense and limiting circuitry sets the current limit to a nominal 0 ...

Page 2

... FAULT OUT_2, 1 Channel 2, 1 Over Current Fault not Indicator 6, 7 OUT_2, 1 Channel 2,1 Controlled Supply Output 2 ISL6118 CHANNEL 1 LIKE CHANNEL 2 Q-PUMP POR CURRENT AND TEMP. MONITORING, GATE AND OUTPUT CONTROL LOGIC DESCRIPTION VIN provides chip bias voltage. At VIN < 2.5V chip functionality is disabled, FAULT_X latch is cleared and floating and OUT is held low ...

Page 3

... See Tech Brief TB379 fo r details All voltages are relative to GND, unless otherwise specified. Electrical Specifications Supply Voltages = 3.3V, T PARAMETER POWER SWITCH ISL6118 On Resistance at 2.7V ISL6118 On Resistance at 3.3V ISL6118 On Resistance at 5.0V Disabled Output Voltage OUT Rising Rate Slow V Turn-off Rate ...

Page 4

... Current Regulation The ISL6118 has integrated current sensing on the power MOSFETs that allows for rapid control of OC events. Once an OC condition is detected the ISL6118 goes into its current regulation (CR) control mode. The ISL6118 CR level is set to a nominal 0.6A and is regulated to within +/-25% over full temperature, bias voltage range and OC magnitude ...

Page 5

... FIGURE 2. SWITCH ON RESISTANCE AT 0.4A 700 o -40 C 650 600 550 500 1.25 1.5 1.75 2.0 2.25 V (V) OUT FIGURE 4. CURRENT REGULATION ISL6118 ON OFF ENABLE FAULT LATCH-OFF SET V OUT OVERCURRENT I OUT 12ms CURRENT REGULATION PERIOD FIGURE 1. OPERATIONAL WAVEFORMS ENABLE VIN = 5V VIN = 3.3V 100 V o OUT C) FIGURE 3. V 3.1 700 650 ...

Page 6

... LEVEL 0.6A 0.4 0.2 TIME (200 s/DIV.) FIGURE 7. CR SETTLING TIME vs FAULT CURRENT ENABLE C V VOLTAGE (0.5V/DIV.) TIME (400 s/DIV.) OUT ISL6118 OUT 1 ISL6118 OUT 2 FIGURE 10. SWITCH FAULT INDEPENDENCE FAULT CURRENT (A) V OUT 100 0 FIGURE 9. FAST TURN-OFF vs C ...

Page 7

... Upon proper bias the PPTC, F1, has a nominal 400mA load current passing through it which is the hold current rating for that particular device. Removal of the PPTC is necessary to isolate the ISL6118 as the PPTC load current is common to the ISL6118EVAL1 bias connections. By enabling either or both of the ISL6118H switches by signaling TP3 and/or TP4 high (> ...

Page 8

... SW1 R10 D5 Intersil, ISL6118HIB 3.3V Aux Hot Plug Controller YAGEO, 8 5%, 2W, 8W-2-ND YAGEO, 6 5%, 2W, 6W-2-ND 470 , 0805 0.1 F, 0805 100 F, 16V Electrolytic, Radial lead 0805, SMD LEDs Red Raychem, Poly Switch, RXE040 or Equivalent Fairchild, ITF86110DK8T, 7.5A, 30V, 0.025 , Dual N-channel, Logic Level Power MOSFET ...

Page 9

... The ‘H’ version refers to the enable function being asserted upon a high input. Introduction The ISL6118, ISL6119 and ISL6121 are all 2. power supply controllers, each having a different level of current regulation (CR). The ISL6118 and ISL6119 have 2 independent controllers with CR levels of 0 ...

Page 10

... For information regarding Intersil Corporation and its products, see web sit ewww.intersil.com Sales Office Headquarters NORTH AMERICA Intersil Corporation 2401 Palm Bay Road Palm Bay, FL 32905 TEL: (321) 724-7000 FAX: (321) 724-7240 10 ISL6118 M8.15 (JEDEC MS-012-AA ISSUE C) 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE SYMBOL ...

Related keywords