參數(shù)資料
型號： TPS62000SHKK
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 1.6 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, CDFP10
封裝： CERAMIC, DFP-10
文件頁數(shù)： 17/23頁
文件大?。?/td> 531K
代理商： TPS62000SHKK
INPUT CAPACITOR SELECTION
Because of the nature of the buck converter having a pulsating input current, a low ESR input capacitor is
required for best input voltage filtering and minimizing the interference with other circuits caused by high input
voltage spikes.
The input capacitor should have a minimum value of 10
μ
F and can be increased without any limit for better input
voltage filtering.
O
O
RMS
I
O(max)
= I
I
I
V
V
1
V
V
è
÷
′
′
-
(7)
The worst case RMS ripple current occurs at D = 0.5 and is calculated as:
O
I
2
RMS
I
=
LAYOUT CONSIDERATIONS
As for all switching power supplies, the layout is an important step in the design especially at high peak currents
and switching frequencies. If the layout is not carefully done, the regulator might show stability problems as well
as EMI problems.
V
IN
L1
EN
SYNC
GND
FC
PGND
FB
L
TPS62000
+
C
o
V
O
C3
C
i
V
I
R1
C
(ff)
R2
+
www.ti.com
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