PJ3842B Просмотр технического описания (PDF) - Promax Johnton
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PJ3842B Datasheet PDF : 14 Pages
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PJ3842B / PJ3843B
High Performance Current Mode Controller
FIGURE 26-CURRENT WAVEFORM SPIKE
SUPPRESSION
FIGURE 27-MOSFET PARASITIC OSCILLATIONS
The addition of RC filter will eliminate instability caused by the
leading edge splik on the current waveform.
FIGURE 28-BIPOLAR TRANSISTOR DRIVE
FIGURE 29-ISOLATED MOSFET DRIVE
The totem-pole output can furnish negative base current for enhanced
transistor turn-off,with the additions of capacitor C1.
FIGURE 30-LATCHED SHUTDOWN
FIGURE 31-ERROR AMPLIFIER COMPENSATION
Error Amp compensation circuit for stabilizing any currentmode
topology except for boost and flyback converters operating with
continuous inductor current.
The MCR101 SCR must be selected for a holding of less than 0.5mA
at TA (min). The simple two transistor circuit can be used in place of
the SCR as shown.All resistors are 10K
Error Amp compensation circuit for stabilizing any currentmode
topology except for boost and flyback converters operating with
continuous inductor current.
10-14
2004/11.Rev B
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