ISL62392IRTZ-T Intersil, ISL62392IRTZ-T Datasheet

IC PWR SUPPLY CONTROLLER 28TQFN

ISL62392IRTZ-T

Manufacturer Part Number
ISL62392IRTZ-T
Description
IC PWR SUPPLY CONTROLLER 28TQFN
Manufacturer
Intersil
Datasheet

Specifications of ISL62392IRTZ-T

Applications
Power Supply Controller
Voltage - Supply
5.5 V ~ 25 V
Current - Supply
150µA
Operating Temperature
-40°C ~ 100°C
Mounting Type
Surface Mount
Package / Case
28-TQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Input
-
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 R
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).
Ordering Information
ISL62391HRTZ*
ISL62392HRTZ*
ISL62391CHRTZ*
ISL62392CHRTZ*
ISL62391IRTZ*
ISL62392IRTZ*
ISL62391CIRTZ*
ISL62392CIRTZ*
*Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel
specifications.
NOTE: These Intersil Pb-free plastic packaged products employ special
Pb-free material sets, molding compounds/die attach materials, and 100%
matte tin plate plus anneal (e3 termination finish, which is RoHS compliant
and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures
that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
NUMBER
(Note)
PART
3
PWM control scheme provides a low jitter
623 91HRTZ
623 92HRTZ
62391C HRTZ
62392C HRTZ
623 91IRTZ
623 92IRTZ
62391C IRTZ
62392C IRTZ
MARKING
PART
1
RANGE (°C)
-10 to +100
-10 to +100
-10 to +100
-10 to +100
-40 to +100
-40 to +100
-40 to +100
-40 to +100
TEMP
Data Sheet
1-888-INTERSIL or 1-888-468-3774
28 Ld 4x4 TQFN
28 Ld 4x4 TQFN
28 Ld 4x4 TQFN
28 Ld 4x4 TQFN
28 Ld 4x4 TQFN
28 Ld 4x4 TQFN
28 Ld 4x4 TQFN
28 Ld 4x4 TQFN
PACKAGE
ISL62391, ISL62392, ISL62391C, ISL62392C
(Pb-Free)
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
L28.4x4
L28.4x4
L28.4x4
L28.4x4
L28.4x4
L28.4x4
L28.4x4
L28.4x4
DWG. #
PKG.
|
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
Features
• High Performance R
• 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
LDO3EN
PGOOD
FSET2
FSET1
FCCM
VCC
FB1
All other trademarks mentioned are the property of their respective owners.
ISL62391, ISL62392, ISL62391C, ISL62392C
April 7, 2011
1
2
3
4
5
6
7
Copyright Intersil Americas Inc. 2008, 2011. All Rights Reserved
28
8
CENTER PAD:
GND
27
9
(28 LD 4X4 TQFN)
3
Technology
10
26
TOP VIEW
11
25
12
24
13
23
14
22
21
20
19
18
17
16
15
FN6666.5
BOOT2
LGATE2
PGND
PVCC
VIN
LDO3
LGATE1

Related parts for ISL62392IRTZ-T

ISL62392IRTZ-T Summary of contents

Page 1

... ISL62391CHRTZ* 62391C HRTZ -10 to +100 ISL62392CHRTZ* 62392C HRTZ -10 to +100 ISL62391IRTZ* 623 91IRTZ -40 to +100 ISL62392IRTZ* 623 92IRTZ -40 to +100 ISL62391CIRTZ* 62391C IRTZ -40 to +100 ISL62392CIRTZ* 62392C IRTZ -40 to +100 *Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications ...

Page 2

... Pb-Free Reflow Profile .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Recommended Operating Conditions Ambient Temperature Range ISL62391IRTZ .-40°C to +100°C ISL62392IRTZ .-40°C to +100°C Ambient Temperature Range ISL62391HRTZ .-10°C to +100°C ISL62392HRTZ .-10°C to +100°C Supply Voltage (VIN to GND 5.5V to 25V = -40°C to +100°C, unless otherwise noted. Typical values are at T ...

Page 3

ISL62391, ISL62392, ISL62391C, ISL62392C Electrical Specifications VIN = 12V VCC, T Boldface limits apply over the operating temperature range. (Continued) PARAMETER VCC POR Threshold Reference Voltage Regulation Accuracy FB Input Bias Current Frequency Range Frequency Set Accuracy VOUT ...

Page 4

ISL62391, ISL62392, ISL62391C, ISL62392C Electrical Specifications VIN = 12V VCC, T Boldface limits apply over the operating temperature range. (Continued) PARAMETER EN Input Leakage Current ISEN Input Impedance ISEN Input Leakage Current OCSET Input Impedance OCSET Input Leakage ...

Page 5

ISL62391, ISL62392, ISL62391C, ISL62392C Functional Pin Description PIN NAME 1 PGOOD Open-drain power-good status outputs. Connect to VCC through a 100k resistor. Output will be high when all outputs are within regulation with no faults detected. 2 FSET2 Frequency control ...

Page 6

ISL62391, ISL62392, ISL62391C, ISL62392C Typical Application Circuits The typical application circuits generate the 5V/8A and 3.3V/8A (system regulator), or 1.05V/15A and 1.5V/15A (chip set) supplies in a notebook computer. The input supply (VBAT) range is 5.5V to 25V ...

Page 7

ISL62391, ISL62392, ISL62391C, ISL62392C Typical Application Circuits 4x10µF 0.22µF IRF7821 2.2µ 2x330µF 14k 0.022µF IRF7832 14k 590 36.5k 1800pF 48.7k 4.7µF 1µF 1µF FIGURE 3. TYPICAL CHIP SET APPLICATION CIRCUIT WITH INDUCTOR ...

Page 8

ISL62391, ISL62392, ISL62391C, ISL62392C Block Diagram FSET1/2 FB1/2 V 0.6V REF FCCM VOUT1/2 SOFT DISCHARGE EN1 START-UP AND EN2 SHUTDOWN LOGIC LDO3EN 10µA OCSET1/2 ISEN1 16% REF FB1 16% REF *In addition to being used for ...

Page 9

ISL62391, ISL62392, ISL62391C, ISL62392C Typical Performance Curves 100 19V 0.10 1.00 I (A) OUT FIGURE 5. CHANNEL 1 EFFICIENCY AT V OPERATION. HIGH-SIDE ...

Page 10

ISL62391, ISL62392, ISL62391C, ISL62392C Typical Performance Curves V O1 PHASE1 V O2 PHASE2 FIGURE 11. CCM STEADY-STATE OPERATION 3.3V 5A PHASE1 V O2 PHASE2 FIGURE 13. AUDIO FILTER OPERATION, ...

Page 11

ISL62391, ISL62392, ISL62391C, ISL62392C Typical Performance Curves EN1 FIGURE 17. DELAYED START 12V EN2 = FLOAT, NO LOAD PGOOD FIGURE 19. DELAYED START 12V ...

Page 12

... Modulator and Switching Frequency The ISL62391, ISL62392, ISL62391C and ISL62392C 3 modulator feature Intersil’s R technology, a hybrid of fixed frequency PWM and variable frequency hysteretic control. 3 Intersil’s R technology can simultaneously affect the PWM switching frequency and PWM duty cycle in response to input voltage and output load transients ...

Page 13

ISL62391, ISL62392, ISL62391C, ISL62392C 1.5ms t SOFTSTART 2.75ms PGOOD DELAY FIGURE 24. SOFT-START SEQUENCE FOR ONE SMPS The PGOOD pin indicates when the converter is capable of supplying regulated voltage undefined impedance not above ...

Page 14

ISL62391, ISL62392, ISL62391C, ISL62392C over the entire load range. This will produce the best transient response to all load conditions, but will have increased light-load power loss. If FCCM is forced low, the ISL62391, ISL62392, ISL62391C and ISL62392C will automatically ...

Page 15

ISL62391, ISL62392, ISL62391C, ISL62392C Where (Ω) is the resistor used to program the OCSET overcurrent setpoint - I is the output current threshold that will activate the OC OCP circuit - DCR is the inductor DC resistance For ...

Page 16

... It is assumed that the reader is familiar with many of the basic skills and techniques referenced in the following section. In addition to this guide, Intersil provides form the Type-II complete reference designs that include schematics, bills of materials, and example board layouts. ...

Page 17

ISL62391, ISL62392, ISL62391C, ISL62392C The inductance of the capacitor can cause a brief voltage dip if the load transient has an extremely high slew rate. Low inductance capacitors should be considered in this scenario. A capacitor dissipates heat as a ...

Page 18

ISL62391, ISL62392, ISL62391C, ISL62392C Where the difference of the DC component of the VALLEY inductor current minus 1/2 of the inductor ripple current - I is the sum of the DC component of the inductor PEAK current ...

Page 19

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

Page 20

ISL62391, ISL62392, ISL62391C, ISL62392C Package Outline Drawing L28.4x4 28 LEAD THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 0, 9/ PIN 1 INDEX AREA TOP VIEW (3 . 20) PACKAGE BOUNDARY ( 50) TYPICAL ...

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