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參數資料
| 型號： | SI9123 |
| 廠商： | Vishay Intertechnology,Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 500-kHz Half-Bridge DC-DC Converter With Integrated Secondary Synchronous Rectification Control |
| 中文描述： | 500千赫半橋型DC - DC與集成的次級同步整流控制轉換器 |
| 文件頁數： | 5/16頁 |
| 文件大?。?/td> | 181K |
| 代理商： | SI9123 |
Si9123
Vishay Siliconix
New Product
Document Number: 72098
S-03639—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
Parameter
Unit
Max
b
Min
b
CS1 = CS2 = 0 V, f
NOM
= 500 kHz, V
IN
= 48 V
Symbol
Output MOSFET DH Driver (High-Side)
Output High Voltage
V
OH
Sourcing 10 mA
V
BST
-
V
Output Low Voltage
V
OL
Sinking 10 mA
V
+
0.3
2.4
-0.1
-0.75
Boost Current
L
X
Current
Peak Output Source
Peak Output Sink
Rise Time
Fall Time
I
BST
I
LX
= 48 V V
V
LX
= 48 V, V
BST
= V
LX
+ V
CC
0.8
-0.8
1.55
-0.4
-1.0
1.0
18
22
mA
I
SOURCE
I
SINK
t
r
t
f
= 48 V V
V
LX
= 48 V, V
BST
= V
LX
+ V
CC
A
0.75
= 25 C C
= 3 nF V
= 12 V 20 80%
T
A
= 25 C, C
DH
= 3 nF, V
CC
= 12 V, 20 - 80%
28
28
ns
Output MOSFET DL Driver (Low-Side)
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
V
CC
= 12 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
DL
= 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
95
110
95
Leading Edge Delays
90
75
90
65
-100
100
16
17
= 25 C, V
= 12 V, L
= 48 V, See
T
A
25 C, V
CC
12 V, L
X
48 V, See
Figure 3
= C
= 3 nF, C
= 0.3 nF
C
DH
C
DL
3 nF, C
SGC_SYNC
0.3 nF
ns
Trailing Edge Delays
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
= 3 nF V
= 12 V 20 80%
T
A
= 25 C, C
SEC_SYNC
= 3 nF, V
CC
= 12 V, 20 - 80%
28
28
ns
Error Amplifier
t
d1DH
t
d2DL
Input to high-side switch off
200
ns
Input to low-side switch off
200
Current Mode
Current Amplifier
t
d3DH
t
d4DL
Input to high-side switch off
200
ns
Input to low-side switch off
200
Notes
a.
b.
c.
d.
e.
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
REG1
by a diode drop
Measured on D
L
H
outputs.
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