SI9122E Datasheet, PDF (16/20 Pages) Vishay Siliconix – 500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification Drivers

Si9122E
Vishay Siliconix
TYPICAL WAVEFORMS
SR L10 V/div
I_OUT 5 A /div
DL 10 V/div
CS2 50 mV/div
2 µs/div
Figure 10. Foldback Mode, R_L = 0.02 Ω
V_IN 2 V/div
SR_L10 V/div
I_OUT 5 A /div
DL 5 V/div
CS2 5 V/div
2 µs/div
Figure 11. Normal Mode, R_L = 0.1 Ω
V_CL 2 V/div
V_EP 2 V/div
V_CC 2 V/div
LX 20 V/div
2 ms/div
Figure 12. V_CC Ramp-Up
SR_H 2 V/div
SR_L 2 V/div
I_OUT 10 A/div
V_OUT 2 V/div
DH 5 V/div
SR_L5 V/div
DL 5 V/div
SR_H 5 V/div
200 µs/div
Figure 13. Overload Recovery
500 ns/div
Figure 14. Effective BBM - Measured On Secondary
500 ns/div
Figure 15. Drive Waveforms
Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon
Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and
reliability data, see http://www.vishay.com/ppg?73866.
www.vishay.com
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Document Number: 73866
S-80112-Rev. D, 21-Jan-08