an8022l Panasonic Corporation of North America, an8022l Datasheet
an8022l
Related parts for an8022l
an8022l Summary of contents
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... Voltage Regulators AN8022L, AN8022SB AC-DC switching power supply control IC Overview The AN8022L and AN8022SB are ICs which are suitable for controlling a switching power supply using primary side control method. Those are most suited for a switching power supply of relatively small capacity. Less frequently used func- ...
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... AN8022L, AN8022SB Block Diagram 8 TIM/OVP OVP ( (13) OSC 2 RT (12) Note) The number shows the pin number for the AN8022SB. Pin Descriptions AN8022L Pin No. Symbol 1 SS Soft start pin 2 RT Resistor connection pin that determines charge and discharge current of triangular wave ...
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... V, I 100 100 OSC1 max1 FB-Du min FB-Du max CC AN8022L, AN8022SB Rating Unit 150 mA 1 000 658 mW 340 Unit k Min Typ Max Unit 13.0 14.2 15 ...
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... AN8022L, AN8022SB Electrical Characteristics at T Design reference data Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed. Parameter Oscillation frequency 2 Overcurrent protection delay time Output voltage rise time Output voltage fall time Terminal Equivalent Circuits Pin No ...
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... When the capacitor is charged to the threshold voltage of OVP, OVP starts to operate and the IC stays stop. IFB: The terminal into which the current feedback sig- nal is input from the photocoupler of the power supply output. 500 9 (6) AN8022L, AN8022SB I under the ...
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... AN8022L, AN8022SB Application Notes [1] Main characteristics [Load Start/stop voltage characteristics Ambient temperature C) Standby bias current characteristics Ambient temperature C) Overcurrent protection threshold voltage characteristics V 220 210 200 190 180 ...
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... L OVP operating bias current characteristics 2.5 2.0 1.5 1.0 0.5 75 100 -50 -25 After AC rectification Start resistance V GND Before start Start voltage Stop voltage . CC AN8022L, AN8022SB 100 Ambient temperature ( OUT Start Voltage supplied a from bias coil Start condition c b Start failure ...
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... AN8022L, AN8022SB Application Notes (continued) [2] Operation descriptions (continued) 2. Oscillation circuit The PWM is an abbreviation of Pulse Width Modulation. In this IC, a smaller voltage between the voltage level which is converted from the current input to IFB terminal and dead-time control level which is fixed internally is compared with the internal triangular oscillation level through PWM comparator, and optimal duty is determined, and then it is output via output driving stage ...
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... It detects abnormal voltage applied from the outside to the power supply output (the voltage which is higher than voltage of the power supply output and may damage the load) by the primary side of the bias coil and operates the OVP. Figure 3 AN8022L, AN8022SB Time state) Time state) ...
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... Since such level fluctuation increases the necessity of withstand capability for the parts to be used and in the worst case it means the cause of destruction, the accuracy of detection level is raised as much as possible for these ICs, the AN8022L and AN8022SB. 10 ...
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... The external capacitor (hereinafter referred this capacitor is set to be sufficiently discharged by the transistor inside the IC. When the supply voltage exceeds the start voltage to start the IC operation, charging is started in the C the constant current source inside the IC. Therefore V AN8022L, AN8022SB Overshoot Pulse width can not be made due to ...
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... AN8022L, AN8022SB Application Notes (continued) [2] Operation descriptions (continued) 5. Soft start (continued) On the other hand, the V has high voltage because the power supply output is low. And, the the medium voltage of the triangular wave oscillation waveform as constant voltage. Therefore, at operation starting, the V ...
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... However, after charge/discharge particularly large current is not required to keep that condition. For the AN8022L or AN8022SB, capacitance value of the power MOSFET used is taking into account, and the capability of peak value ensured. The parasitic LC of the power MOSFET may produce ringing which makes the output pin go under the GND potential ...
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... For this reason, the AN8022L and AN8022SB use the following method: The soft start charge current is given from the constant current source used in the internal triangular wave oscillation circuit. In addition, the above constant ...
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... A [Setting the C1] When the AN8022L or AN8022SB is started, the operating supply current of 7 required at V The current should be supplied with the discharge current of the C1 during the period from the soft start time up to the time when the supply current is supplied from the auxiliary bias coil. Therefore, set the C1 as shown in ...
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... AN8022L, AN8022SB Application Circuit Example Filter 16 5 GND 4 CLM IFB Voltage Regulators ...