Electronic Components Datasheet Search |
|
TSM1012AI Datasheet(PDF) 6 Page - STMicroelectronics |
|
TSM1012AI Datasheet(HTML) 6 Page - STMicroelectronics |
6 / 8 page TSM1012 6/8 The current-control trans-conductance operation- al amplifier can be fully compensated. Both of its output and negative input are directly accessible for external compensation components. An example of a suitable compensation network is shown in Fig.2. It consists of a capacitor Cic1=2.2nF and a resistor Ric1=22K Ω in series. 3. Start Up and Short Circuit Conditions Under start-up or short-circuit conditions the TSM1012 is not provided with a high enough sup- ply voltage. This is due to the fact that the chip has its power supply line in common with the power supply line of the system. Therefore, the current limitation can only be en- sured by the primary PWM module, which should be chosen accordingly. If the primary current limitation is considered not to be precise enough for the application, then a suffi- cient supply for the TSM1012 has to be ensured under any condition. It would then be necessary to add some circuitry to supply the chip with a sepa- rate power line. This can be achieved in numerous ways, including an additional winding on the trans- former. 4. Voltage clamp The following schematic shows how to realize a low-cost power supply for the TSM1012 (with no additional windings).Please pay attention to the fact that in the particular case presented here, this low-cost power supply can reach voltages as high as twice the voltage of the regulated line. Since the Absolute Maximum Rating of the TSM1012 supply voltage is 28V. In the aim to protect he TSM1012 against such how voltage values a in- ternal zener clamp is integrated. Rlimit = (Vcc-Vz)Ivz Figure 4 : Clamp voltage Figure 5 : Vz 28V Vcc Rlimit cc Ivz TSM1012 Rsense C2 R2 R1 C1 C3 optocoupler secondary side Cic1 2,2nF Cvc1 2,2nF Ric1 22K Rvc1 22K Rlimit R4 R5 R3 D1 D2 OUT+ OUT- Ric2 1K PWM controller optocoupler primary side TSM1012 28V Vref Vcc CC CC- CC+ Gnd CV CV- CV+ Out 1,25V 3 4 8 5 1 7 2 6 C4 47nF |
Similar Part No. - TSM1012AI |
|
Similar Description - TSM1012AI |
|
|
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 |