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TPS40140 Datasheet(PDF) 2 Page - Texas Instruments

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Part No. TPS40140
Description  DUAL OR 2-PHASE, STACKABLE CONTROLLER
Download  65 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS40140 Datasheet(HTML) 2 Page - Texas Instruments

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Contents
TPS40140
DUAL OR 2-PHASE, STACKABLE CONTROLLER
SLUS660A – SEPTEMBER 2005 – REVISED JULY 2006
1
INTRODUCTION
.......................................... 1
5.14
OUTPUT OVERVOLTAGE PROTECTION
......... 19
1.1
FEATURES
........................................... 1
5.15
CLKFLT, CLKIO PIN FAULT
........................ 19
1.2
APPLICATIONS
...................................... 1
5.16
PHSEL PIN FAULT
................................. 19
1.3
DESCRIPTION
....................................... 1
5.17
OVERTEMPERATURE
............................. 20
1.4
ORDERING INFORMATION
......................... 1
5.18
FAULT MASKING OPERATION
.................... 20
2
DEVICE RATINGS
........................................ 3
5.19
PROTECTION AND FAULT MODES
............... 20
2.1
ABSOLUTE MAXIMUM RATINGS
................... 3
5.20
SETTING THE SWITCHING FREQUENCY
........ 20
5.21
SYNCHRONIZING A SINGLE CONTROLLER TO
2.2
RECOMMENDED OPERATING CONDITIONS
..... 3
AN EXTERNAL CLOCK
............................. 21
2.3
ELECTROSTATIC DISCHARGE (ESD)
PROTECTION
........................................ 3
5.22
SPLIT INPUT VOLTAGE OPERATION
............. 22
2.4
PACKAGE DISSIPATION RATINGS
................. 3
5.23
CURRENT SENSE
................................. 23
2.5
ELECTRICAL CHARACTERISTICS
.................. 4
5.24
CURRENT SENSING AND BALANCING
........... 24
5.25
OVERCURRENT DETECTION AND HICCUP
3
TYPICAL CHARACTERISTICS
......................... 6
MODE
............................................... 24
4
DEVICE INFORMATION
............................... 11
5.26
CALCULATING OVERCURRENT PROTECTION
4.1
TERMINAL CONFIGURATION
..................... 11
LEVEL
............................................... 25
4.2
CLOCK MASTER AND CLOCK SLAVE
............ 11
5.27
CONFIGURING SINGLE AND MULTIPLE ICS
..... 28
4.3
VOLTAGE MASTER AND VOLTAGE SLAVE
...... 12
5.28
DIGITAL CLOCK SYNCHRONIZATION
............ 39
4.4
FUNCTIONAL BLOCK DIAGRAM
.................. 14
5.29
DESIGN EXAMPLES INFORMATION
.............. 41
5
APPLICATION INFORMATION
....................... 15
6
DESIGN EXAMPLES
................................... 42
5.1
FUNCTIONAL DESCRIPTION
...................... 15
6.1
Example 1: Dual-Output Configuration from 12 V to
5.2
DATA SHEET ORGANIZATION
.................... 15
3.3 V and 1.5 V DC-to-DC Converter Using a
TPS40140
........................................... 42
5.3
TYPICAL START UP SEQUENCE
.................. 15
6.2
Example 2: Two-Phase Single Output Configuration
5.4
TRACK (SOFT-START WITHOUT PRE-BIASED
From 12 V to 1.5 V DC/DC Converter Using a
OUTPUT)
............................................ 16
TPS40140
........................................... 49
5.5
SOFT-START WITH PRE-BIASED OUTPUTS
..... 16
6.3
Example 3: Four-Phase Single Output Configuration
5.6
TRACK FUNCTION IN CONFIGURING A SLAVE
From 12 V to 1.8 V DC-to-DC Converter Using Two
CHANNEL
........................................... 17
TPS40140
........................................... 52
5.7
DIFFERENTIAL AMPLIFER, U9
.................... 18
6.4
ABBREVIATIONS
................................... 58
5.8
POWER GOOD
..................................... 18
6.5
LAYOUT CONSIDERATIONS
...................... 59
5.9
SETTING THE OUTPUT VOLTAGE
................ 18
7
ADDITIONAL REFERENCES
......................... 60
5.10
PROGRAMMABLE INPUT UNDERVOLTAGE
7.1
Related Parts
....................................... 60
LOCK OUT PROTECTION
.......................... 19
7.2
References
......................................... 60
5.11
POWER ON RESET (POR)
......................... 19
7.3
Package Outline
..................................... 60
5.12
OVERCURRENT
.................................... 19
7.4
Recommended PCB Footprint
...................... 60
5.13
OUTPUT UNDERVOLTAGE PROTECTION
....... 19
2
Contents
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