參數(shù)資料
型號: SI9124
廠商: Vishay Intertechnology,Inc.
元件分類: DC/DC變換器
英文描述: 500-kHz Push-Pull DC-DC Converter With Integrated Secondary Synchronous Rectification Control
中文描述: 500千赫推挽式直流與集成的次級同步整流控制DC轉(zhuǎn)換器
文件頁數(shù): 5/16頁
文件大?。?/td> 175K
代理商: SI9124
Si9124
Vishay Siliconix
New Product
Document Number: 72099
S-03638—Rev. B, 20-Mar-03
www.vishay.com
5
SPECIFICATIONS
a
Limits
-40 to 85 C
Typ
c
Test Conditions Unless Specified
V
INDET
= 4.8 V; 10 V
V
CC
13.2 V, V
CC2
= V
CC
Parameter
Unit
Max
b
Min
b
CS1 = CS2 = 0 V, f
NOM
= 500 kHz, V
IN
= 48 V
Symbol
Output A Primary Driver
Output High Voltage
V
OH
Sourcing 10 mA
V
CC2
-
V
Output Low Voltage
V
OL
Sinking 10 mA
PGND
2
+ 0.3
1.1
-0.75
V
CC2
Current
Peak Output Source
Peak Output Sink
Rise Time
Fall Time
I
CC5
0.1
1.55
-1.0
1.0
18
22
mA
I
SOURCE
I
SINK
t
r
t
f
= 12 V, PGND
= 0 V
V
CC2
12 V, PGND
2
0 V
A
0.75
= 25 C C
= 3 nF V
= 12 V 20 80%
T
A
= 25 C, C
OUTA
= 3 nF, V
CC
= 12 V, 20 - 80%
28
28
ns
Output B Primary Driver
Output High Voltage
V
OH
Sourcing 10 mA
V
-
0.3
V
Output Low Voltage
Peak Output Source
Peak Output Sink
Rise Time
Fall Time
V
OL
Sinking 10 mA
0.3
-0.75
I
SOURCE
I
SINK
t
r
t
f
= 12 V PGND = 0 V
V
CC
= 12 V, PGND = 0 V
-1.0
1.0
19
24
A
0.75
= 25 C C
= 3 nF V
= 12 V 20 80%
T
A
= 25 C, C
OUTB
= 3 nF, V
CC
= 12 V, 20 - 80%
28
28
ns
Secondary_Synchronous Driver
Output High Voltage
V
OH
Sourcing 10 mA
V
-
0.4
V
Output Low Voltage
V
OL
t
d1
t
d3
t
d2
t
d4
Sinking 10 mA
0.4
110
110
110
110
Leading Edge Delays
= 25 C V
= 12 V L
= 48 V See
T
A
= 25 C, V
CC
= 12 V, L
X
= 48 V, See
Figure 3
80
80
80
80
-100
100
16
17
ns
Trailing Edge Delays
= 3nF C
SEC SYNC
= 0 3 nF
C
OUTA
= C
OUTB
= 3nF, C
SEC_SYNC
= 0.3 nF
Peak Output Source
Peak Output Sink
Rise Time
Fall Time
Voltage Mode
I
SOURCE
I
SINK
t
r
t
f
V
CC
= 12 V
mA
= 25 C C
SEC SYNC
= 0 3 nF V
= 12 V 20 80%
T
A
= 25 C, C
SEC_SYNC
= 0.3 nF, V
CC
= 12 V, 20 - 80%
28
28
ns
Error Amplifier
t
d1A
t
d2B
Input to A-side switch off
200
ns
Input to B-side switch off
200
Current Mode
Current Amplifier
t
d3A
t
d4B
Input to A-side switch off
200
ns
Input to B-side switch off
200
Notes
a.
b.
c.
d.
e.
f.
Refer to PROCESS OPTION FLOWCHART for additional information.
The algebraic convention whereby the most negative value is a minimum and the most positive a maximum (-40 to 85 C).
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing and are measured at V
CC
= 12 V unless otherwise noted.
V
tracks V
by a diode drop.
Measured on OUT
or OUT
outputs.
Note total supply current drawn is I
CC3
plus I
CC5
.
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