參數資料
型號: PTH12010WAST
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源模塊
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封裝: DIP-10
文件頁數: 4/27頁
文件大小: 931K
代理商: PTH12010WAST
www.ti.com
DESIGNING FOR VERY FAST LOAD TRANSIENTS
SLTS205G – JUNE 2003 – REVISED FEBRUARY 2007
The transient response of the DC/DC converter has been characterized using a load transient with a di/dt of
1 A/s. The typical voltage deviation for this load transient is given in the data sheet specification table using the
optional value of output capacitance. As the di/dt of a transient is increased, the response of a converter’s
regulation circuit ultimately depends on its output capacitor decoupling network. This is an inherent limitation
with any dc/dc converter once the speed of the transient exceeds its bandwidth capability. If the target
application specifies a higher di/dt or lower voltage deviation, the requirement can only be met with additional
output capacitor decoupling. In these cases special attention must be paid to the type, value and ESR of the
capacitors selected.
If the transient performance requirements exceed that specified in the data sheet, or the total amount of load
capacitance is above 3000 F, the selection of output capacitors becomes more important.
12
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