 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
ICE2AS01G Datasheet(PDF) 7 Page - Infineon Technologies AG |
|
||||||||||||||||||||||||||||||
ICE2AS01G Datasheet(HTML) 7 Page - Infineon Technologies AG |
|
|
7 / 24 page  Datasheet 7 30 Jun 2006 Preliminary Data ICE2AS01/S01G ICE2BS01/S01G Functional Description 3 Functional Description 3.1 Power Management Figure 3 Power Management The Undervoltage Lockout monitors the external supply voltage VVCC. In case the IC is inactive the current consumption is max. 55µA. When the SMPS is plugged to the main line the current through RStart-up charges the external Capacitor CVCC. When VVCC exceeds the on-threshold VCCon=13.5V the internal bias circuit and the voltage reference are switched on. After it the internal bandgap generates a reference voltage VREF=6.5V to supply the internal circuits. To avoid uncontrolled ringing at switch-on a hysteresis is implemented which means that switch-off is only after active mode when Vcc falls below 8.5V. In case of switch-on a Power Up Reset is done by reseting the internal error-latch in the protection unit. When VVCC falls below the off-threshold VCCoff=8.5V the internal reference is switched off and the Power Down reset let T1 discharging the soft-start capacitor CSoft-Start at pin SoftS. Thus it is ensured that at every switch-on the voltage ramp at pin SoftS starts at zero. 3.2 Improved Current Mode Figure 4 Current Mode Current Mode means that the duty cycle is controlled by the slope of the primary current. This is done by comparison the FB signal with the amplified current sense signal. Figure 5 Pulse Width Modulation In case the amplified current sense signal exceeds the FB signal the on-time Ton of the driver is finished by reseting the PWM-Latch (see Figure 5). Internal Bias Voltage Reference 6.5V 4.8V Undervoltage Lockout 13.5V 8.5V Power-Down Reset Power-Up Reset Power Management 5.3V 4.0V T1 PWM-Latch R S Q Q Error-Latch SoftS 6.5V Error-Detection VCC Main Line (100V-380V) Primary Winding Soft-Start Comparator C VCC R Soft-Start R Start-Up C Soft-Start x3.65 PWM OP Improved Current Mode 0.8V PWM Comparator PWM-Latch Isense FB R S Q Q Driver Soft-Start Comparator t FB Amplified Current Signal T on t 0.8V Driver |
Similar Part No. - ICE2AS01G |
|
Similar Description - ICE2AS01G |
|
|
|
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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
