MP110GPR Datasheet, PDF (14/23 Pages) MPS Industries, Inc. – 900V Offline Switching Regulator

MP110 – 900V OFFLINE SWITCHING REGULATOR
on, the IC implements leading-edge blanking.
During the blanking time, any trigger signal on
source pin is blocked. An internal leading-edge
blanking(LEB) unit containing two LEB times is
employed between the Source pin and the
current comparator input to avoid premature
switching pulse termination due to the parasitic
capacitances. During the blanking time, the
current comparator is disabled and can not turn
off the MOSFET.
Current sensor leading edge blanking inhibits the
current limitation comparator during 650ns (T_LEB1,
typical value) and SCP leading edge blanking
inhibits the SCP current comparator during 600ns
(T_LEB2, typical value). Figure 5 shows the primary
current sense waveform and the leading edge
blanking.
T_LEB1=650ns
T_LEB2=600ns
Figure 5: Leading Edge Blanking
MP110 Rev. 1.01
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14
6/4/2014
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