The AP combines a Pulse Width Modulation. (PWM) controller and a V power MOSFET, specifically designed for a high performance off-line converter. AP Datasheet – PWM Controller – AiT Semiconductor, APP8U datasheet, AP pdf, AP pinout, AP equivalent, data. Product Detail: Offer AP CHIPOWN, APA, APC from Hong Kong Components In Stock Suppliers in 【Price】【Datasheet PDF】USA.

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The input capacitor C1 is charged from line via one way rectifier consisting of diodes D1 and D2. Excessive voltage across the sense resistor would lead to darasheet feedback operation in the current mode PWM ap datasheet.


STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.

Phase L, average detector Figure It is because the feedback current reacts to the output load change to adopt switching duty cycle. Channel 4 red shows the inductor current.

The variable feedback current creates different FB voltage, different voltage drop across the resistor R3 and D3 zener voltage. The R3 voltage variation is 0. The diode D7 between capacitor C7 and C4 ensures the proper start-up of the converter.

Alternatively, a double sided pcb can be used. In this manner, the auto-restart can alternately enable and disable ap datasheet switching of the power Sense FET until the fault condition is datasheeet.


The voltage across R2 VR2 is. One has to take into account the slight variation of the output voltage with the load. The SW pin is designed to connect directly to the primary lead of the SW transformer and is capable of switching a maximum of V.

During primary switch Zp8012 the inductor current flows through the inductor to ground and not to the output capacitor as for buck converter. Fig 1 Startup circuit 2. The presented reference board incorporates both variants by different assembly options. In this case the converter should be simple and low cost. The purpose of those pictures is to demonstrate the skipping cycle function at light dtaasheet no-load condition and cycle-by-cycle primary current limitation at overload or output shorted condition.

Startup This device includes a ap datasheet voltage start up current source connected on the SW of the device. Exposure to absolute maximum rating conditions datashee extended periods may affect device ap datasheet. Sense FET source terminal on primary side and internal control ground. At this point, the converter enters a regulated operation where the COMP pin receives the.


The voltage feedback loop is provided via zener diode D3, resistor R3 and capacitor C6. Information furnished is believed to be accurate and reliable. The first is a buck step-down converter with a positive output voltage referenced to the common ground. In this switch-off phase the source terminal of the VIPer12 sees a negative level of the forward biased D5 when referenced to ground so it can be considered as grounded.


However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use.


The second one with negative output voltage is a buck-boost converter. T r Rise Ap datasheet. Phase N, peak detector 2. Auxiliary under voltage lockout with hysteresis. The zener diode D6 was not connected during the measurements Figure 6: By removing the jumper R5 and placement of the jumper R4 the buck converter can be easily changed to the inverting buck-boost converter. The output current flowing to the output capacitor C3 is discontinuous for the buck-boost converter unlike the above described buck converter.

No license is granted by implication or otherwise under any patent or patent rights ap802 STMicroelectronics. This device includes a high voltage start up current source connected on the SW of the device. T j Junction Operating Ap datasheet.

AP_PDF Datasheet Download IC-ON-LINE

The presented power supply has two variants. The updated every day, always provide the best quality and ap datasheet. T c Case Operating Temperature. The zener diode D6 was not connected during the measurements. The physical appearance of the dxtasheet can be observed from Figure 5.

To counter this effect, the device employs a leading edge blanking LEB circuit. The converter is called inverting.