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TPS40140 Datasheet(PDF) 27 Page - Texas Instruments

Part No. TPS40140
Description  TPS40140 Dual or 2-Phase, Stackable Controller
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS40140 Datasheet(HTML) 27 Page - Texas Instruments

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CLKIO
PHSEL
20 A
SLAVE3
CLKIO
PHSEL
TPS40140
R3
R1
TPS40140MASTER
SLAVE2
CLKIO
PHSEL
TPS40140
SLAVE1
CLKIO
PHSEL
TPS40140
SLAVE7
CLKIO
PHSEL
TPS40140
SLAVE6
TPS40140
SLAVE5
TPS40140
SLAVE4
TPS40140
ILIM2
ILIM2
ILIM2
ILIM2
BP5
10 k
CLKIO
PHSEL
R2
CLKIO
PHSEL
CLKIO
PHSEL
TPS40140
www.ti.com
SLUS660I – SEPTEMBER 2005 – REVISED JANUARY 2015
9.1.3.3.6
Eight ICs Operation
To further increase the total current capability to sixteen phases, or to increase the number of outputs, seven
slave controllers can be added as shown in Figure 25.
Figure 25. Master Controller and Seven Slave Controllers, 16 Phases
In this configuration, the master senses that there are three slave controllers (due to the three resistors) and
distributes an eight-phase CLKIO signal. Slave1, slave2, and slave3 are turned on at 90°, 45°, and 135°
respectively as before with three slaves. However, to get sixteen phases with an eight-phase clock, both edges
of the CLKIO signal are used to control the slaves. With the ILIM2 tied high on slave4, slave5, slave6, and slave7
they turn on at the rising edge of CLKIO, while the master and slave1, slave2, and slave3 turn on at the falling
edge of CLKIO. If six slaves are desired, just delete one of the slaves from Figure 25. The interleaving is not be
perfect because there is 22.5° between the master and three slaves. The deleted slave causes 45° between the
two adjacent slaves. See Figure 26 for a phasing details.
Copyright © 2005–2015, Texas Instruments Incorporated
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