ml4828cs Microsemi Corporation, ml4828cs Datasheet
ml4828cs
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ml4828cs Summary of contents
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BiCMOS Phase Modulation/Soft Switching Controller GENERAL DESCRIPTION The ML4828 is a complete BiCMOS phase modulation control IC suitable for full bridge soft switching converters. Unlike conventional PWM circuits, the phase modulation technique allows for zero voltage switching (ZVS) transitions and ...
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ML4828 PIN CONNECTION PIN DESCRIPTION PIN NAME DESCRIPTION and A2 delay programming A resistor and B2 delay programming B resistor . 3 R Oscillator charge current T programming resistor Oscillator timing capacitor. ...
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ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied .................................................................................................. Output Current, Source or Sink (A1, ...
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ML4828 ELECTRICAL CHARACTERISTICS PARAMETER PHASE MODULATOR EAO Zero Duty Cycle Threshold RAMP Delay to Output RAMP Discharge Current SOFT-START Charge Current Discharge Current CURRENT LIMIT/SHUTDOWN Current Limit Threshold Pin 20 Delay to Output Pin 12 Shutdown Threshold Pin 12 Restart ...
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FUNCTIONAL DESCRIPTION PHASE MODULATOR The ML4828 controls the power of a full bridge power section by modulating the phases of the switches of the A and B sides (Figure 1). The power cycle starts with A2 and B1 high, as ...
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ML4828 SETTING THE OSCILLATOR FREQUENCY The ML4828 switching frequency is determined by the charge and discharge times of the network connected to the R and C pins. Figure 3 shows the relationships T T between the internal clock and the ...
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I SWITCH SENSE R C RST RST Figure 5. Over-Current, Soft-Start, and Integrating Fault Detect Circuits. SOFT START TIME CONSTANT During start up, the output voltage is much lower than the steady state value. Without soft ...
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ML4828 If the current limit condition persists, then I reactivated, thus charging higher level as shown RST in Figure 7. Eventually, the voltage at RST will exceed 2.5V, and the soft start comparator will trip, shutting down ...
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ML4828 PHYSICAL DIMENSIONS 0.498 - 0.512 (12.65 - 13.00) 20 PIN 0.024 - 0.034 0.050 BSC (0.61 - 0.86) (1.27 BSC) (4 PLACES) 0.012 - 0.020 0.090 - 0.094 (0.30 - 0.51) (2.28 - 2.39) 10 inches ...
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PHYSICAL DIMENSIONS 20 PIN 0.060 MIN (1.52 MIN) (4 PLACES) 0.170 MAX (4.32 MAX) 0.125 MIN (3.18 MIN) inches (millimeters) (Continued) Package: P20 20-Pin PDIP 1.010 - 1.035 (25.65 - 26.29) 0.240 - 0.260 (6.09 - 6.61) ...
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... ML4828 ORDERING INFORMATION PART NUMBER ML4828CP ML4828CS ML4828IP ML4828IS © Micro Linear 1997 is a registered trademark of Micro Linear Corporation Micro Linear Products described in this document may be covered by one or more of the following patents, U.S.: 4,897,611; 4,964,026; 5,027,116; 5,281,862; 5,283,483; 5,418,502; 5,508,570; 5,510,727; 5,523,940; ...