參數(shù)資料
型號: PTH05050YAST
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-6
文件頁數(shù): 3/18頁
文件大小: 1004K
代理商: PTH05050YAST
www.ti.com
Designing for Very Fast Load Transients
PTH03050Y
PTH05050Y
PTH12050Y
SLTS221A–MARCH 2004–REVISED OCTOBER 2005
The transient response of the DC/DC converter has been characterized using a load transient with a di/dt of
1A/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 3300 F, the selection of output capacitors becomes more important.
11
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