參數(shù)資料
型號: PCA5007
廠商: NXP Semiconductors N.V.
英文描述: Pager baseband controller
中文描述: 傳呼機基帶控制器
文件頁數(shù): 64/112頁
文件大?。?/td> 604K
代理商: PCA5007
1998 Oct 07
64
Philips Semiconductors
Product specification
Pager baseband controller
PCA5007
6.22.5
V
OLTAGE
/
CURRENT RIPPLE
The ripples are determined by V
BAT
, inductance L, C
o
, ESR (Equivalent Series Resistance of C
o
, switching frequency
and the load current I
L
. The ripples are illustrated in Fig.36. If ESR = 0
, then V
ripple
=
V.
Fig.35 Circuit to analyse ripples.
handbook, full pagewidth
MGR138
D1
P
N
Ci
VBAT
Co
ESR
IL
VDD
L
VC
IL
Fig.36 Zoom-in on the voltage and current ripples.
a. Normal mode.
b. Standby mode.
handbook, full pagewidth
MGR139
Tsw
tn
tp
Vripple
Iripple
V
IL
Imean
t
t
tn
IL
Imean
Ipeak
t
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