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PDF ISL62391 Data sheet ( Hoja de datos )
| Número de pieza | ISL62391 | |
| Descripción | Triple-Output System Power Supply Controller | |
| Fabricantes | Intersil | |
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ISL62391, ISL62392, ISL62391C, ISL62392C
Data Sheet
August 25, 2015
FN6666.8
High-Efficiency, Triple-Output System
Power Supply Controller for Notebook
Computers
The ISL62391, ISL62392, ISL62391C and ISL62392C
controller generate supply voltages for battery-powered
systems. It includes two pulse-width modulation (PWM)
controllers, adjustable from 0.6V to 5.5V, and a linear
regulator (LDO3) that generates a fixed 3.3V and can deliver
up to 100mA. The ISL62391, ISL62392, ISL62391C and
ISL62392C include on-board power-up sequencing, a
power-good (PGOOD) output, digital soft-start, and internal
soft-stop output discharge that prevents negative voltages on
shutdown.
The patented R3 PWM control scheme provides a low jitter
system with fast response to load transients. Light-load
efficiency is improved with period-stretching discontinuous
conduction mode (DCM) operation. To eliminate noise in audio
frequency applications, an ultrasonic DCM mode is included,
which limits the minimum switching frequency to 28kHz.
The ISL62391, ISL62391C and ISL62392, ISL62392C are
identical except for how their overvoltage protection is
handled. The ISL62391 and ISL62391C utilize a tri-state
overvoltage scheme, whereas the ISL62392 and ISL62392C
employ a soft-crowbar method.
The ISL62391, ISL62392, ISL62391C and ISL62392C are
available in a 28 Ld 4x4 TQFN package and operate over
the extended temperature range (-40°C to +100°C).
Features
• High Performance R3 Technology
• Fast Transient Response
• ±1% Output Voltage Accuracy
• 2 Fully Programmable Switch-Mode Power Supplies
• Programmable Switching Frequency
• Fixed 3.3V LDO Output
• Internal Soft-Start and Soft-Stop Output Discharge
• Wide Input Voltage Range: 5.5V to 25V
• Full and Ultrasonic Pulse-Skipping Mode
• Power-Good Indicator
• Overvoltage, Undervoltage and Overcurrent Protection
• Thermal Monitor and Protection
• Pb-Free (RoHS Compliant)
Applications
• Notebook and Sub-Notebook Computers
• PDAs and Mobile Communication Devices
• 3-Cell and 4-Cell Li+ Battery-Powered Devices
Pinout
ISL62391, ISL62392, ISL62391C, ISL62392C
(28 LD 4X4 TQFN)
TOP VIEW
28 27 26 25 24 23 22
PGOOD 1
21 BOOT2
FSET2 2
20 LGATE2
FCCM 3
19 PGND
VCC 4
18 PVCC
LDO3EN 5
17 VIN
FSET1 6
FB1 7
CENTER PAD:
GND
16 LDO3
15 LGATE1
8 9 10 11 12 13 14
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 2008, 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.
1 page  
ISL62391, ISL62392, ISL62391C, ISL62392C
Electrical Specifications VIN = 12V, EN = VCC, TA = -40°C to +100°C, unless otherwise noted. Typical values are at TA = +25°C.
Boldface limits apply over the operating temperature range. (Continued)
PARAMETER
CONDITIONS
MIN MAX
(Note 7) TYP (Note 7) UNITS
EN Input Leakage Current
EN = GND or VCC
-3.5 3.5 µA
ISEN Input Impedance
EN = VCC
600 k
ISEN Input Leakage Current
EN = GND
0.1 µA
OCSET Input Impedance
EN = VCC
600 k
OCSET Input Leakage Current
EN = GND
0.1 µA
OCSET Current Source
EN = VCC
8.7 10.0 10.5 µA
OCP (OCSET-ISEN) Threshold
EN = VCC (ISL62391HRTZ, ISL62392HRTZ,
TA = -10°C to +100°C)
9 10.0 10.5
-1.75 0.0 1.75
µA
mV
UVP Threshold
Falling edge, referenced to FB
80.9 84 87 %
OVP Threshold
Falling edge, referenced to FB (ISL62391HRTZ,
ISL62392HRTZ, TA = -10°C to +100°C)
Rising edge, referenced to FB
81 84 87
113 116 120
%
%
Falling edge, referenced to FB
99.5 103 106
%
OTP Threshold
Rising edge
150 °C
Falling edge
135
NOTES:
6. FSW accuracy reflects IC tolerance only; it does not include frequency variation due to VIN, VOUT, LOUT, ESRCOUT, or other application specific
parameters.
7. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
5 FN6666.8
August 25, 2015
5 Page 
ISL62391, ISL62392, ISL62391C, ISL62392C
Typical Performance Curves (Continued)
VO1
PHASE1
VO2
PHASE2
VO1
PHASE1
VO2
PHASE2
FIGURE 11. CCM STEADY-STATE OPERATION, VIN = 12V,
VO1 = 3.3V, IO1 = 5A, VO2 = 5V, IO2 = 5A
VO1
PHASE1
VO2
PHASE2
FIGURE 13. AUDIO FILTER OPERATION, VIN = 12V,
VO1 = 3.3V, VO2 = 5V, NO LOAD
VO1
PHASE1
IO1
FIGURE 15. LOAD INSERTION RESPONSE, VIN = 12V,
VO = 3.3V, IO = 0.1A/8.1A @ 2.5A/µs
11
FIGURE 12. DCM STEADY-STATE OPERATION, VIN = 12V,
VO1 = 3.3V, IO1 = 0. 2A, VO2 = 5V, IO2 = 0.2A
VO1
PHASE1
IO1
FIGURE 14. TRANSIENT RESPONSE, VIN = 12V, VO = 3.3V,
IO = 0.1A/8.1A @ 2.5A/µs
VO1
PHASE1
IO1
FIGURE 16. LOAD RELEASE RESPONSE, VIN = 12V,
VO = 3.3V, IO = 0.1A/8.1A @ 2.5A/µs
FN6666.8
August 25, 2015
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet ISL62391.PDF ] | |
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