Electronic Components Datasheet Search |
|
ICE1PD265G Datasheet(PDF) 5 Page - Infineon Technologies AG |
|
ICE1PD265G Datasheet(HTML) 5 Page - Infineon Technologies AG |
5 / 16 page Infineon Technologies preliminary ICE1PD265G Infineon Tech PCI Group 10.09.01 5 Multiplier The one quadrant multiplier regulates the gate driver with respect of the DC output voltage and the AC half wave rectified input voltage. Both inputs are designed to achieve good linearity over a wide dynamic range to represent an AC line free from distortion. Special efforts are made to assure uni- versal line applications with respect to a 90 to 270 V AC range. The multiplier output is internally clamped at 1.0V. So the MOSFET is protected against critical operating during start up. Current sense comparator, LEB and RS Flip-Flop An external sense resistor transferes the source current of the MOSFET into a sense voltage.The multiplier output voltage is compared with this sense voltage. To protect the current comparator input from negative pulses a current source is inserted which sends current out of the ISENSE pin every time when ISENSE is falling below ground potential. The switch-on current peak of the MOSFET is blanked out via a resistor-capacitor circuit with a blanking time of typically 220ns. Therefore better THD is achieved at low load conditions. The RS Flip-Flop ensures that only one single switch-on and switch-off pulse appears at the gate drive output during a given cycle (double pulse suppression). Zero Current Detector The zero current detector senses the inductor current via an auxiliary winding and ensures that the next on-time of the MOSFET is initiated immediately when the inductor current has reached zero. This diminishes the revers recovery losses of the boost converter diode. The MOSFET is switched off when the voltage drop of the shunt resistor reaches the voltage level of the multipler output. So the boost current waveform has a triangular shape and there are no deadtime gaps between the cycles. This leads to a continuous AC line current limiting the peak current to twice of the average current. To prevent false tripping the zero current detector is designed as a Schmitt-Trigger with a hysteresis of 0.5V. An internal 5V clamp protects the input from overvoltage breadkdown, a 0.6V clamp pre- vents substrate injection. An external resistor has to be used in series with the auxiliary winding to limit the current through the clamps. Restart Timer If the MOS is off for more than 150us a restart impulse is generated by the restart timer. |
Similar Part No. - ICE1PD265G |
|
Similar Description - ICE1PD265G |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |