參數(shù)資料
型號: SI9122A
廠商: Vishay Intertechnology,Inc.
英文描述: 500-kHz Half-Bridge DC/DC Controller With Integrated Secondary Synchronous Rectification Drivers
中文描述: 500千赫半橋DC / DC變換器與集成的次級同步整流驅(qū)動器控制器
文件頁數(shù): 3/15頁
文件大?。?/td> 241K
代理商: SI9122A
Si9122A
Vishay Siliconix
Document Number: 73492
S–51921—Rev. A, 12-Sep-05
www.vishay.com
3
V
IN
(Continuous)
V
IN
(100 ms)
V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
BST
(Continuous)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(100 ms)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
LX
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
BST
– V
LX
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
REF
, R
OSC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Logic Inputs
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog Inputs
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HV Pre-Regulator Input Current (continuous)
80 V
100 V
14.5 V
95 V
113.2 V
100 V
15 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–0.3 V to V
CC
+ 0.3 V
–0.3 V to V
CC
+ 0.3 V
–0.3 V to V
CC
+ 0.3 V
. . . . . . . . . . . . . . . . . . . . .
5 mA
Storage Temperature
–65 to 150 C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Junction Temperature
Power Dissipation
a
TSSOP-20
b
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MLP65-20
c
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
125 C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
850 mW
2500 mW
Thermal Impedance (
TSSOP-20
MLP65-20
Notes
a.
Device mounted on JEDEC compliant 1S2P test board..
b.
Derate –14 mW/ C above 25 C.
c.
Derate –26 mW/ C above 25 C.
JA
)
75 C/W
38 C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation
of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
V
IN
28 to 75 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
CC
Operating
10.5 to 13.2 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CV
CC
4.7 F
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
f
OSC
200 to 625 kHz
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R
OSC
22.6 to 72 k
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R
BBM
C
REF
C
BOOST
Analog Inputs
Digital Inputs
Reference Voltage Output Current
22 to 50 k
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
0.1 F
0.1 F
0 to V
CC
– 2 V
0 to V
CC
0 to 2.5 mA
Test Conditions
Unless Otherwise Specified
Limits
–40 to 85 C
Parameter
Symbol
f
NOM
= 500 kHz, V
IN
= 75 V
V
INDET
= 7.5 V; 10.5 V
V
CC
13.2 V
Min
b
Typ
c
Max
b
Unit
Reference (3.3 V)
Output Voltage
V
REF
I
SREF
dVr/dlr
V
CC
= 12 V, 25 C Load = 0 mA
V
REF
= 0 V
I
REF
= 0 to –2.5 mA
@ 100Hz
3.2
3.3
3.4
V
Short Circuit Current
–50
mA
Load Regulation
–30
–75
mV
Power Supply Rejection
PSRR
60
dB
Oscillator
Accuracy (1% R
OSC
)
Max Frequency
h
Foldback Frequency
d
R
OSC
= 30 k , f
NOM
= 500 kHz
R
OSC
= 22.6 k
f
NOM
= 500 kHz, V
CS2
– V
CS1
–20
500
20
750
%
F
MAX
F
FOBK
625
kHz
150 mV
100
Error Amplifier
Input Bias Current
I
BIAS
A
V
BW
V
EP
= 0 V
–40
–15
A
Gain
–2.2
V/V
Bandwidth
5
MHz
Power Supply Rejection
PSRR
@ 100Hz
60
dB
Slew Rate
SR
0.5
V/ s
Current Sense Amplifier
Input Voltage CM Range
V
CM
A
VOL
BW
V
CS1
– GND, V
CS2
– GND
150
mV
Input Amplifier Gain
17.5
dB
Input Amplifier Bandwidth
5
MHz
Input amplifier Offset Voltage
V
OS
5
mV
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