參數(shù)資料
型號(hào): TPS40090QPWRQ1
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PDSO24
封裝: GREEN, PLASTIC, TSSOP-24
文件頁數(shù): 22/23頁
文件大?。?/td> 309K
代理商: TPS40090QPWRQ1
t
BPS +
4.5
C
BP5
8
10*3
BP5
1
2
3
4
4-Phase
Operation
1
2
3
4
3-Phase
Operation
2-Phase
Operation
1
2
3
4
SLUS845C
– JUNE 2008 – REVISED MAY 2011
Setting Controller Configuration
By default, the controller operates at four-phase configuration. The alternate number of active phases is
programmed by connecting unused PWM outputs to BP5. (See Figure 1) For example, for three-phase
operation, the unused fourth phase output, PWM4, should be connected to BP5. For two-phase operation, the
second, PWM2, and the fourth, PWM4, outputs should be connected to BP5.
Power Up
Capacitors connected to the BP5 pin and the soft-start pin set the power-up time. When EN is high, the capacitor
connected to the BP5 pin gets charged by the internal LDO as shown in Figure 2.
(1)
Figure 1. Programming Controller Configuration
8
Copyright
2008–2011, Texas Instruments Incorporated
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