參數資料
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: 31/66頁
文件大?。?/td> 1264K
代理商: TPS53851RHHT
CLKIO
PHSEL
20 mA
SLAVE2
CLKIO
PHSEL
TPS53851
R2
R1
TPS53851
MASTER
SLAVE1
CLKIO
PHSEL
TPS53851
SLAVE5
CLKIO
PHSEL
TPS53851
SLAVE4
CLKIO
PHSEL
TPS53851
SLAVE3
CLKIO
PHSEL
TPS53851
ILIM2
BP5
10 kW
www.ti.com
SLUS985 – DECEMBER 2009
5.27.3.5 Six Devices Operation
To further increase the total current capability to twelve phases, or to increase the number of outputs, five
slave controllers can be added as shown in Figure 5-18
Figure 5-18. Master Controller and Five Slave Controllers, 12-Phases
In this configuration, the master senses that there are two slave controllers (due to the 2 resistors) and
distributes a six-phase CLKIO signal. Slave1 and slave2 are turned on at 60° and 120° respectively, as
before with two slaves. However, to get twelve phases with a six-phase clock, both edges of the CLKIO
signal are used to control the slaves. With the ILIM2 tied high on slave3,slave4, and slave5, they turn on
at the rising edge of CLKIO while the master and slave1 and slave2 turn on at the falling edge of CLKIO.
If four slaves are desired, just delete one of the slaves from Figure 5-18. The interleaving is not perfect
because there is be 30° between the master and three slaves. The deleted slave causes 60° between the
two adjacent slaves. See Figure 5-20 for phasing details.
Copyright 2009, Texas Instruments Incorporated
APPLICATION INFORMATION
37
Product Folder Link(s): TPS53851
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