 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
IRU3072C Datasheet(PDF) 10 Page - International Rectifier |
|
||||||||||||||||||||||||||||||
IRU3072C Datasheet(HTML) 10 Page - International Rectifier |
|
|
10 / 24 page  10 Rev. 1.0 3/25/04 IRU3072 www.irf.com (a). Shutdown and start up PWM output by controlling soft start SS1. LDO output such as Vout2 will not be affected. (b). Shutdown and start up LDO output by controlling soft-start SSLDO. PWM output VOUT1 will not be affected. Figure 10 - Shutdown PWM or LDO by controlling soft-start. One issue related to shutdown of PWM output by pull- ing down the soft-start, there is a small negative voltage shown in the output during the shutdown. It is because the low side MOSFET driver is on when the soft-start capacitor voltage is pulling down. The output inductor resonates with output capacitor and load. This occurs especially often when output current is small (light load or no load condition). The operation waveforms are shown as follows. Figure 11 - Operation waveforms when PWM converter is shutdown by pulling down the soft-start capacitor. Both PWM output and LDO output can be shutdown by pulling the pin VSEN33/SDB down. One example is shown as follows. Figure 12 - External shutdown by using pin VSEN33/SDB. IRU3072 U1 Vcc Vc HDrv LDrv VOUT1 OCSet VSEN33 / SDB C6 C10 L1 Q4 Q5 R7 VccLDO VBUS=5V UVLO 3.3V Drv2 Fb2 Soft-Start SS1 SSLDO L2 4.7K External Shutdown |
Similar Part No. - IRU3072C |
|
Similar Description - IRU3072C |
|
|
|
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
