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參數(shù)資料
| 型號： | TPS53851RHHT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, PQCC36 |
| 封裝： | PLASTIC, VQFN-36 |
| 文件頁數(shù)： | 32/66頁 |
| 文件大小： | 1264K |
| 代理商： | TPS53851RHHT |
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CLKIO
PHSEL
20 mA
SLAVE3
CLKIO
PHSEL
TPS53851
R3
R2
R1
TPS53851
MASTER
SLAVE2
CLKIO
PHSEL
TPS53851
SLAVE1
CLKIO
PHSEL
TPS53851
SLAVE7
CLKIO
PHSEL
TPS53851
SLAVE6
CLKIO
PHSEL
TPS53851
SLAVE5
CLKIO
PHSEL
TPS53851
SLAVE4
CLKIO
PHSEL
TPS53851
ILIM2
BP5
SLUS985 – DECEMBER 2009
www.ti.com
5.27.3.6 Eight Devices 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 5-19.
Figure 5-19. 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 45° and 90°
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 5-19. 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 5-20 for a phasing
details.
38
APPLICATION INFORMATION
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TPS53851
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