SI9122E Datasheet, PDF (12/20 Pages) Vishay Siliconix – 500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification Drivers

Si9122E
Vishay Siliconix
TYPICAL CHARACTERISTICS
600
500
400
300
200
20
30
40
50
60
70
80
R_OSC (k )
F_OSC vs. R_OSC at V_CC = 12 V
10.0
9.5
9.0
V_INDET V_REF
TC = - 11 mV/C
8.5
8.0
7.5
- 50 - 25 0
25 50 75 100 125 150
Temperature (°C)
V_REG vs. Temperature, V_IN = 48 V
25
V_CC = 13 V
23
V_CC = 12 V
21
19
V_CC = 10 V
17
15
- 50 - 25
0
25 50 75
Temperature (°C)
I_SS vs. Temperature
100 125
www.vishay.com
12
3.300
3.295
3.290
3.285
3.280
3.275
3.270
- 50 - 25
0
25
50
75
100
Temperature (°C)
V_REF vs. Temperature, V_CC = 12 V
100
90
3.6 V = V_INDET
80
70
4.8 V
60
7.2 V
50
40
V_CC = 12 V
30
20
10
0
0.0
0.5
1.0
1.5
2.0
V_EP (V)
SR_L, SR_H Duty Cycle vs. V_EP
8.20
8.15
8.10
8.05
TC = + 1.25 mV/C
V_INDET V_REF
8.00
7.95
7.90
- 50 - 25 0
25 50 75 100 125 150
Temperature (°C)
V_SS vs. Temperature, V = 12 V
Document Number: 73866
S-80112-Rev. D, 21-Jan-08