Electronic Components Datasheet Search |
|
TDA4605D Datasheet(PDF) 2 Page - STMicroelectronics |
|
TDA4605D Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 6 page PIN CONFIGURATION Pin Number Description 1 Regulating voltage : information input concerning secondary voltage. By comparing the regulating voltage obtained from the regulating winding of the transformer with the internal reference voltage, the output pulse width on Pin 5 is adapted to the load of the secondary side (normal, overload, short circuit, no load) 2 Primary current simulation : information input regarding the primary current. The primary current rise in the primary winding is simulated at Pin 2 as a voltage rise by means of external RC element. When a value is reached that is derived from the regulating voltage at Pin 1, the output pulse at Pin 5 is terminated. The RC element serves to set the maximum power at the overload point. 3 Primary voltage detector : input for primary voltage monitoring. When the line voltage is too low the IC is switched-off by comparing V3 with an internal reference. Voltage at Pin 3 is used for overload point compensation. 4 Ground 5 Output : push-pull output for charge and discharge of the gate capacitance of the power MOS transistor. 6 Supply voltage : Supply voltage input. From it are derived a stable internal reference voltage (VREF) and the switching threshold V6A,V6E,V6 max and V6 min for the supply voltage detector. if V6 >V6E the VREF is switched on and switched off when V6 <V6A. In addition the logic is only enable for V6 min <V6 <V6 max. 7 Soft-start : input for soft-start and integration network. Start-up will begin with short pulses by connecting a capacitor between Pin 7 to ground. This capacitor together with a resistor connected between Pin 7 and error amplifier output also as acts an integrator network for regulation. 8 Zero detector : Input for the oscillator feedback. After starting oscillator, every zero transit of the feedback voltage (falling edge) triggers an output pulse at Pin 5. The trigger threshold is at typically - 50mV 1 2 3 4 5 6 78 V 6min V 6ma x V 6E V 6A V 2B Vst V R V u V REF Re fere nce Volta ge (typ. 3V) S upply Voltage Monitor Prima ry Current Recopy Output S ta ge and Current Limit Logic S ta rting Impulse G enera tor Regulating & Ove rload Amplifier Current S ource Ove rloa d Point Corre ction Low Volta ge P rote ction Monitoring Stop Comp. Zero Crossing De te ctor TDA4605 BLOCK DIAGRAM TDA4605 2/6 |
Similar Part No. - TDA4605D |
|
Similar Description - TDA4605D |
|
|
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 |