ML4822IP Micro Linear, ML4822IP Datasheet
ML4822IP
Related parts for ML4822IP
ML4822IP Summary of contents
Page 1
GENERAL DESCRIPTION The ML4822 is a PFC controller designed specifically for high power applications. The controller contains all of the functions necessary to implement an average current boost PFC converter, along with a Zero Voltage Switch (ZVS) controller to reduce ...
Page 2
ML4822 PIN CONFIGURATION ML4822 14-Pin DIP (P14) VEAO 1 14 IEAO SENSE RMS SENSE 7 8 TOP VIEW PIN DESCRIPTION (Pin ...
Page 3
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. Shunt Regulator Current (I ) ................................. 55mA CC Peak ...
Page 4
ML4822 ELECTRICAL CHARACTERISTICS PARAMETER ZV SENSE COMPARATOR Propagation Delay Threshold Voltage Input Capacitance GAIN MODULATOR Gain (Note 2) Bandwidth Output Voltage OSCILLATOR Initial Accuracy Voltage Stability Temperature Stability Total Variation Ramp Valley to Peak Voltage Dead Time C Discharge Current ...
Page 5
ELECTRICAL CHARACTERISTICS PARAMETER MOSFET DRIVER OUTPUTS Output Low Voltage Output High Voltage Output Rise/Fall Time UNDERVOLTAGE LOCKOUT Threshold Voltage Hysteresis SUPPLY Shunt Voltage (V ) CCZ Load Regulation Total Variation Start-up Current Operating Current Note 1: Limits are guaranteed by ...
Page 6
ML4822 FUNCTIONAL DESCRIPTION Switching losses of wide input voltage range PFC boost converters increase dramatically as power levels increase above 200 watts. The use of zero-voltage switching (ZVS) techniques improves the efficiency of high power PFCs by significantly reducing the ...
Page 7
Q1 Turn-On The turn-on event consists of the time it takes for the current through L2 to ramp to the L1 current plus the resonant event of L2 and the ZVS capacitor. The total event should occur in a minimum ...
Page 8
ML4822 8 Figure 3. ML4822 Scematic ...
Page 9
PHYSICAL DIMENSIONS 14 PIN 0.070 MIN (1.77 MIN) (4 PLACES) 0.170 MAX (4.32 MAX) 0.125 MIN (3.18 MIN) inches (millimeters) Package: P14 14-Pin PDIP 0.740 - 0.760 (18.79 - 19.31) 0.240 - 0.260 (6.09 - 6.61) 0.050 ...
Page 10
... ORDERING INFORMATION PART NUMBER ML4822CP ML4822CS ML4822IP ML4822IS © 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; ...