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.

Author: Dok Vule
Country: Liechtenstein
Language: English (Spanish)
Genre: Video
Published (Last): 12 February 2011
Pages: 224
PDF File Size: 10.60 Mb
ePub File Size: 7.70 Mb
ISBN: 401-8-81635-777-3
Downloads: 60532
Price: Free* [*Free Regsitration Required]
Uploader: Moogugami

Sense FET source terminal on primary side and internal control ground.

It means the IC and corresponding supply and feedback loop circuitry is floating. The voltage feedback loop is provided via zener diode D3, resistor R3 and capacitor C6. T j Junction Operating Ap datasheet. Excessive voltage across the sense resistor would lead to false feedback operation in the current mode PWM ap datasheet.

T j Junction Operating Temperature. To counter this effect, the device employs a leading edge blanking LEB circuit.

Exposure to absolute maximum. For compliance with the EN standard, a small input filter X-capacitor, common mode choke should be added, if there is no EMI filter for the complete system. Startup This device includes a ap datasheet voltage start up current source connected datasheer the SW of the device. R2 receives this current and the current coming from the COMP pin.


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.

The output current is the parameter in this case. This allows the inductor current to flow also through D4 and supply the VIPer12 and give the feedback information about output voltage. The holes for through-hole components are not seen in the picture. The level of this negative voltage is equal to the output voltage level. The presented results depicted from Figure 18 datasheet Figure 21 show the results.


Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. In this manner, the auto-restart can alternately enable and disable ap datasheet switching of the power Sense FET until the fault condition is eliminated.

The feedback current can change from 0mA full output power to about 0. The circuit is EMI compliant both emission and immunitywhen a small input filter is added. The channel 4 red shows the inductor current.

APH APC/AP Low Power OFF-Line SMPS Primary Switcher SOP-8

Phase L, average detector Figure Thanks to this diode the feedback loop circuit is separated from supply circuit. Once fault condition occurs, switching is terminated and. Ap datasheet offers a large amount of data sheet, You can free PDF files download. Fig 1 Startup circuit 2. The physical appearance of the converter can be observed from Figure 5. Auto start up with high voltage adtasheet source.


The D3 voltage variation depends on the diode V-I characteristics. Figure 24 shows the variation of the output voltage with input DC voltage change. In this switch-off phase the source terminal of the VIPer12 sees negative level of forward biased D5 and negative output voltage when referenced to ground.

The presented reference board incorporates both variants by different assembly options.

AP8012H AP8012 DIP8 New original

Diode D6 limits the output voltage at light load condition and it also protects the U2 voltage datazheet. One has to take into account the slight variation of the output voltage with the load. The board incorporates both a buck and buck-boost variant of the converter. For this reason the reference ground is common for an input and output connection terminal.