|
|
Part: TCA785
Category:
Analog & Mixed-Signal Processing
Description: Phase Control ic
Company: Infineon Technologies Corporation
Datasheet: Download TCA785 datasheet File size : 361 kB
Request For quote: Find where to buy TCA785
Datasheet text preview:
TCA 785
Phase Control IC
TCA 785
Bipolar IC
Features
q q q q q q q q
Reliable recognition of zero passage Large application scope May be used as zero point switch LSL compatible Three-phase operation possible (3 ICs) Output current 250 mA Large ramp current range Wide temperature range
P-DIP-16-1
Type TCA 785
Ordering Code Q67000-A2321
Package P-DIP-16-1
This phase control IC is intended to control thyristors, triacs, and transistors. The trigger pulses can be shifted within a phase angle between 0 ° and 180 °. Typical applications include converter circuits, AC controllers and three-phase current controllers. This IC replaces the previous types TCA 780 and TCA 780 D. Pin Definitions and Functions Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 Pin Configuration (top view) Semiconductor Group 14 15 16 1 Symbol GND Q2 QU Q2 VSYNC I QZ V REF R9 C10 V11 C12 L Q1 Q2 VS Function Ground Output 2 inverted Output U Output 1 inverted Synchronous voltage Inhibit Output Z Stabilized voltage Ramp resistance Ramp capacitance Control voltage Pulse extension Long pulse Output 1 Output 2 Supply voltage 09.94
TCA 785
Functional Description The synchronization signal is obtained via a high-ohmic resistance from the line voltage (voltage V5). A zero voltage detector evaluates the zero passages and transfers them to the synchronization register. This synchronization register controls a ramp generator, the capacitor C10 of which is charged by a constant current (determined by R9). If the ramp voltage V10 exceeds the control voltage V11 (triggering angle ), a signal is processed to the logic. Dependent on the magnitude of the control voltage V11, the triggering angle can be shifted within a phase angle of 0° to 180°. For every half wave, a positive pulse of approx. 30 µs duration appears at the outputs Q 1 and Q 2. The pulse duration can be prolonged up to 180° via a capacitor C12. If pin 12 is connected to ground, pulses with a duration between and 180° will result. Outputs Q 1 and Q 2 supply the inverse signals of Q 1 and Q 2. A signal of +180° which can be used for controlling an external logic,is available at pin 3. A signal which corresponds to the NOR link of Q 1 and Q 2 is available at output Q Z (pin 7). The inhibit input can be used to disable outputs Q1, Q2 and Q 1 , Q 2 . Pin 13 can be used to extend the outputs Q 1 and Q 2 to full pulse length (180° ).
Block Diagram Semiconductor Group 2
TCA 785
Pulse Diagram
Semiconductor Group
3
Others parts begin by tc
TC-1 TC-2 TC-3 TC-4 TC-5 TC-6 TC-7 TC-8 TC-9 TC-10 TC-11 TC-12 TC-13 TC-14 TC-15 TC-16 TC-17 TC-18 TC-19 TC-20 TC-21 TC-22 TC-23 TC-24 TC-25 TC-26 TC-27 TC-28 TC-29 TC-30 TC-31 TC-32 TC-33 TC-34 TC-35 TC-36 TC-37 TC-38 TC-39 TC-40 TC-41 TC-42 TC-43 TC-44 TC-45 TC-46
|
|
|
