參數(shù)資料
型號(hào)： TEA1211
廠(chǎng)商： NXP Semiconductors N.V.
英文描述： High efficiency auto-up/down DC/DC converter
中文描述： 高效率auto-up/down直流/直流轉(zhuǎn)換器
文件頁(yè)數(shù)： 16/23頁(yè)
文件大?。?/td> 125K
代理商： TEA1211
2003 Oct 13
16
Philips Semiconductors
Preliminary specification
High efficiency auto-up/down
DC/DC converter
TEA1211HN
11.2
Component selection
11.2.1
I
NDUCTOR
The inductor should have a low Equivalent Series Resistance (ESR) to reduce losses and the inductor must be able to
handle the peak currents without saturating.
Table 3
Inductor selection information
11.2.2
C
APACITORS
For the output capacitor the ESR is critical. The output voltage ripple is determined by the product of the current through
the output capacitor and its ESR. The lower the ESR, the smaller the ripple. However, an ESR less than 80 m
could
result in unstable operation.
Table 4
Input and output capacitor selection information
If the I
2
C-bus interface is used to program the output voltage, use a larger input capacitor to prevent the under voltage
lockout level being triggered by large current peaks drawn from this capacitor.
Table 5
Input capacitor selection information, when I
2
C-bus is used
11.2.3
S
CHOTTKY DIODES
The Schottky diodes provide a lower voltage drop during the break-before-make time of the internal power FETs. It is
advised to use Schottky diodes with fast recovery times.
Table 6
Schottky selection information
COMPONENT
VALUE
TYPE
SUPPLIER
L1
L1
6.8
μ
H
10
μ
H
DO3316-682
SLF7032T-100M1R4
Coilcraft
TDK
COMPONENT
VALUE
TYPE
SUPPLIER
C
IN
, C
OUT
100
μ
F/10 V
TPS-series
594D-series
AVX
Vishay/Sprague
COMPONENT
C
IN
(I
2
C-bus used)
VALUE
TYPE
SUPPLIER
220 to 470
μ
F/10 V
TPS-series
594D-series
AVX
Vishay/Sprague
COMPONENT
TYPE
SUPPLIER
D1, D2
PRLL5819
Philips
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TEA1211HN 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:High efficiency auto-up/down DC/DC converter
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