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TPS40140 Datasheet(PDF) 24 Page - Texas Instruments

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Part No. TPS40140
Description  Dual or 2-Phase, Stackable Controller
Download  68 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS40140 Datasheet(HTML) 24 Page - Texas Instruments

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CLKIO
PHSEL
20 A
R2
R1
TPS40140MASTER
SLAVE1
CLKIO
PHSEL
TPS40140
SLAVE2
CLKIO
PHSEL
TPS40140
10 k
TPS40140
SLUS660I – SEPTEMBER 2005 – REVISED JANUARY 2015
www.ti.com
9.1.3.3.3
Three ICs Operation
To increase the total current capability to six phases, or to increase the number of outputs, two slave controllers
can be added as shown in Figure 22. In this configuration for perfect interleaving, the master and slaves are 120°
out-of-phase. The CLKIO signal has six clocks for each cycle of the switching period; therefore, the switching
period is reduced. In this six-phase mode, the switching frequency is increased 33%.
Figure 22. Master Controller and Two Slave Controllers, Six Phases
In this configuration, the master senses that there are two slave controllers, and distributes a six-phase CLKIO
signal. The slave controllers sense the voltage on their PHSEL pins, and delay the proper number of CLKIO
pulses to be 60° or 120° out-of-phase with the master.
9.1.3.3.4
Four ICs Operation
To further increase the total current capability to eight phases, or to increase the number of outputs, three slave
controllers can be added as shown in Figure 23.
24
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