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參數資料
| 型號： | TPS53851RHHT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, PQCC36 |
| 封裝： | PLASTIC, VQFN-36 |
| 文件頁數： | 21/66頁 |
| 文件大小： | 1264K |
| 代理商： | TPS53851RHHT |
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SLUS985 – DECEMBER 2009
www.ti.com
5.27 CONFIGURING SINGLE AND MULTIPLE DEVICES
The controller may be configured for a single output, 2-phase mode or a dual output voltage mode. In the
Dual output mode the input voltages and the output voltages are independent of each other. In 2-phase
mode the input voltages and output voltages are tied together, respectively and certain other pins must be
configured. The two phases of a single controller are always 180° out of phase. The entry in the following
tables that refer to' TO NETWORK' means the normal resistor-capacitor network used for control loop
compensation. The other entries refer to components that are typically connected to the Device Pin.
5.27.1 Single Device Operation
A single controller may be configured as a 2-phase or dual output. A summary of the modes and device
pin connections for a single controller is given in Table 5-2. The basic schematic of a single controller
operating in a 2-phase mode is shown in Figure 5-11 . The dual output schematic is shown in Figure 5-14.
Table 5-2. TPS53851 Single Device Mode Selection and
Pin Configuration
DEVICE PIN
FOR 2 PHASE MODE
FOR DUAL OUTPUT MODE
COMP1
to network
COMP2
COMP1
to network
TRK1
to SS capacitor
TRK2
to BP5
to SS capacitor
ILIM1
to set resistors
ILIM2
GND
to set resistors
FB1
to network
FB2
GND
to network
PHSEL
GND
PGOOD1
to pull-up resistor
PGOOD1
to pull-up resistor
CLKIO
OPEN
28
APPLICATION INFORMATION
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TPS53851
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