Moteur de recherche de fiches techniques de composants électroniques |
|
TDA16846-2 Fiches technique(PDF) 5 Page - Infineon Technologies AG |
|
TDA16846-2 Fiches technique(HTML) 5 Page - Infineon Technologies AG |
5 / 29 page TDA 16846/16846-2 TDA 16847/16847-2 Version 2.0 5 31 Jul 2003 1.4 Short Description of the Pin Functions Pin Function 1 A parallel RC-circuit between this pin and ground determines the ringing suppression time and the standby-frequency. 2 A capacitor between this pin and ground and a resistor between this pin and the positive terminal of the primary electrolytic capacitor quantifies the max. possible output power of the SMPS. 3 This is the input of the error amplifier and the zero crossing input. The output of a voltage divider between the control winding and ground is connected to this input. If the pulses at pin 3 exceed a 5 V threshold, the control voltage at pin 4 is lowered. 4 This is the pin for the control voltage. A capacitor has to be connected between this pin and ground. The value of this capacitor determines the duration of the softstart and the speed of the control (primary regulation). 5 If an opto coupler for the control is used, its output has to be connected between this pin and ground. The voltage divider at pin 3 has then to be changed, so that the pulses at pin 3 are below 5 V. 6 Fault comparator 2: A voltage > 1.2 V at this pin stops the SMPS (v.also pin 9). 7 If fixed frequency mode is wanted, a parallel RC circuit has to be connected between this pin and ground. The RC-value determines the frequency. If synchronized mode is wanted, sync pulses have to be fed into this pin. 8 TDA 16846-2: Not connected. TDA 16847-2: This is the power measurement output of the Temporary High Power Circuit. A capacitor and a RC-circuit has to be connected between this pin and ground. 9 Output for the reference voltage (5 V). With a resistor between this pin and ground the fault comparator 2 (pin 6) is enabled. 10 Fault comparator 1: If a voltage > 1 V is applied to this pin, the SMPS stops. 11 This is the input of the primary voltage check. The voltage at the anode of the primary electrolytic capacitor has to be fed to this pin via a voltage divider. If the voltage of this pin falls below 1 V, the SMPS is switched off. A second function of this pin is the primary voltage dependent fold back point correction (only active in free running mode). 12 Common ground. 13 Output signal. This pin has to be connected via a series resistor to the gate of the power transistor. 14 Connection for supply voltage and startup capacitor. After startup, the supply voltage is produced by the control winding of the transformer and rectified by an external diode. |
Numéro de pièce similaire - TDA16846-2 |
|
Description similaire - TDA16846-2 |
|
|
Lien URL |
Politique de confidentialité |
ALLDATASHEET.FR |
ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants 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 |