SI9122A_08 VISHAY [Vishay Siliconix], SI9122A_08 Datasheet - Page 4

• Manufacturer Part Number: SI9122A_08
• Description: 500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification Drivers
• Manufacturer: VISHAY [Vishay Siliconix]

Si9122A
Vishay Siliconix
www.vishay.com
4
SPECIFICATIONS
Parameter
Reference (3.3 V)
Output Voltage
Short Circuit Current
Load Regulation
Power Supply Rejection
Oscillator
Accuracy (1 % R
Max Frequency
Foldback Frequency
Error Amplifier
Input Bias Current
Gain
Bandwidth
Power Supply Rejection
Slew Rate
Current Sense Amplifier
Input Voltage CM Range
Input Amplifier Gain
Input Amplifier Bandwidth
Input Amplifier Offset Voltage
CL_CONT Current
Lower Current Limit Threshold
Upper Current Limit Threshold
Hysteresis
CL_CONT Clamp Level
PWM Operation
Duty Cycle
Pre-Regulator
Input Voltage
Input Leakage Current
Regulator Bias Current
Regulator_Comp
Pre-Regulator Drive Capacility
e
h
OSC
d
)
a
C
L_CONT(min)
I
Symbol
I
CL_CONT
SOURCE
dVr/dir
PSRR
F
PSRR
V
I
V
I
D
I
I
V
F
+ V
START
I
A
D
I
SREF
V
V
I
REG1
REG2
FOBK
BIAS
BW
BW
SINK
SR
THCL
TLCL
LKG
MAX
A
REF
VOL
MAX
MIN
CM
OS
V
IN
f
NOM
V
INDET
f
V
OSC
R
Unless Otherwise Specified
CC
= 500 kHz, V
OSC
f
NOM
V
V
V
I
V
= 7.5 V; 10.5 V ≤ V
IN
PD
= 500 kHz
V
= 12 V, 25 °C Load = 0 mA
CS1
IN
IN
I
CS2
= 30 kΩ, f
REF
= 75 V, V
Test Conditions
= 75 V, V
= 500 kHz, V
R
= I
= 75 V, V
dV
dV
- GND, V
See Figure 6
I
I
OSC
V
PU
PU
V
V
PU
I
- V
I
= 0 to - 2.5 mA
CS
CS
at 100 Hz
V
at 100 Hz
PD
IN
dV
CC
CC
REF
EP
< 500 µA
= 500 µA
CS1
= 10 µA
- I
= 100 mV
= 170 mV
= 22.6 kΩ
CS
> 2 mA
< V
CS2
= 12 V
= 0 V
CL_CONT
INDET
= 0 V
NOM
INDET
CC
= 0
> 150 mV
CS2
REG
- V
> V
IN
= 500 kHz
CS1
> V
- GND
< V
= 75 V
CC
REG
= 0
REF
> 150 mV
SD
V
≤ 13.2 V
V
EP
EP
= 1.75 V
= 0 V
Min.
- 20
500
- 40
- 29
3.2
0.6
90
28
50
20
b
- 40 to 85 °C
Limits
S-80038-Rev. D, 14-Jan-08
Typ.
± 150
- 2.2
< 15
17.5
Document Number: 73492
- 30
625
100
120
100
150
- 50
- 19
3.3
0.5
± 5
> 2
60
60
92
86
82
5
5
0
3
8
c
Max.
- 50
- 75
750
- 15
200
110
3.4
1.5
20
95
75
10
14
- 9
b
MHz
V/µs
MHz
Unit
kHz
V/V
mA
mV
mV
mV
mA
mV
mA
mA
dB
µA
dB
dB
µA
µA
µA
%
%
V
V
V