參數(shù)資料
型號: PIP250M
英文描述: Integrated buck converter
中文描述: 集成的降壓轉(zhuǎn)換器
文件頁數(shù): 10/19頁
文件大?。?/td> 334K
代理商: PIP250M
Philips Semiconductors
PIP250M
Integrated buck converter
Product data
Rev. 02 — 21 February 2003
10 of 19
9397 750 10904
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
Error amplifier
G
ol
GB
Overvoltage, overcurrent and undervoltage protection
V
FB(th)OV
overvoltage threshold
feedback voltage
V
FB(th)UV
undervoltage threshold
feedback voltage
I
OCSET
OCSET sink current
t
D(OC)
overcurrent trip delay
t
D(UV)
undervoltage trip delay
t
SS
soft start interval
open loop gain
Gain bandwidth product
-
-
35
17
-
-
dB
MHz
voltage on FB increasing
1.0
1.1
-
V
voltage on FB decreasing
-
0.5
0.6
V
V
OCSET
= 4.5 V
35
-
-
-
40
30
30
2
45
-
-
-
μ
A
μ
s
μ
s
ms
Table 5:
V
DDC
= 5 V; T
amb
= 25
°
C; circuit of
Figure 9
unless otherwise specified.
Symbol
Parameter
Characteristics
…continued
Conditions
Min
Typ
Max
Unit
See circuit of
Figure 9
.
V
DDC
= 5 V; V
DDO
= 5 V; V
O
= 2.5 V
See circuit of
Figure 9
.
(1) V
O
= 3.3 V
(2) V
O
= 2.5 V
(3) V
O
= 1.8 V
(4) V
O
= 1.5 V
(5) V
O
= 1.2 V
Fig 8.
Total solution efficiency as a function of
average output current; typical values.
Fig 7.
Total power dissipation as a function of average
output current; typical values.
03ak51
0
1
2
3
4
0
4
8
12
16
IO(AV) (A)
Ptot
(W)
03al76
75%
80%
85%
90%
95%
100%
η
(%)
2
5
7
10
12
15
IO(AV) (A)
(1)
(2)
(3)
(4)
(5)
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