ORIENT IGBT Drive Optocoupler Product Introduction

Ray Wang    [email protected]    www.orient-opto.com

1. IGBT Introduction:

IGBT, short for Insulated Gate Bipolar Transistor, is a high-power semiconductor device commonly used in power electronics applications, especially for circuits with high voltage and current. The IGBT combines the high input impedance of a MOSFET (metal oxide semiconductor field-effect transistor) with the voltage-driven characteristics of a GTR (power transistor).

The IGBT is a three-terminal device: gate, collector and emitter.

                                            IGBT symbol:                                                     IGBT equivalent circuit:   

OR-341W  

 

2, ORIENT IGBT drive optocoupler introduction:

The ORIENT IGBT isolated drive optocoupler consists of an LED coupled to an integrated circuit with a power output stage. This optocoupler is ideal for power IGBTs and MOSFETs used in drive motor and inverter applications. The high operating voltage range at the output provides the drive voltage required by the gate control device.

 

3, General application of ORIENT IGBT drive optocoupler:

1), IGBT/MOSFET gate drive

2), AC/brushless DC motor driver

3), Inverter

4), Switching power supply

 

4，ORIENT IGBT drive optocoupler electrical parameter interpretation:

1), Forward working voltage-VF: refers to the voltage drop of the LED itself at a given working current;

2), Reverse voltage-VR: refers to the LED withstand the maximum reverse voltage, more than this reverse voltage, may damage the LED;

3), Input threshold current-IFLH: refers to the optocoupler input trigger current, reach this current, the optocoupler can be normally switched on;

4), Closing threshold voltage-VFHL: refers to the optocoupler input closed threshold voltage, below this voltage, the optocoupler closed does not work;

5), High level output peak current-IOPH: refers to the output port VO can output the maximum peak current;

6), Low level output peak current-IOPL: refers to the maximum peak current that VO can flow into the output port at low power level;

7), High level power supply current-ICCH: refers to the output no-load, and output high voltage, the power supply PT current, its size marks the size of the device static power consumption;

8), Low level power supply current-ICCL: refers to the output no-load, and output low voltage, the power supply PT current, its size marks the size of the device static power consumption;

9),High level output voltage-VOH: refers to the voltage value of the output port VO at high power level;

 

5，ORIENT IGBT Drive optocoupler Typical models:

ORIENT's current IGBT drive optocoupler covers package shapes: 8PIN, SO6, SOP5

 

        

 

                                    

                                8PIN Package                                                            SO6 Package                                                        SOP5 Package  

              

The ORIENT IGBT drive optocoupler can also be distinguished by VCC supply voltage and IO(PEAK) output peak current:

VCC operating voltage 15-30V	Output peak current 1A	Output peak current 1.5A	Output peak current 3A	Output peak current 4A
	OR-340	OR-3150	OR-3120	OR-343
			OR-341

 

VCC operating voltage	10-30V Output peak current 1A	Output peak current 1.5A	Output peak current 2.5A	Output peak current 3A
	OR-155E	OR-314	OR-152	OR-250H

When recommending to customers, pay attention to the VCC power supply conditions used by customers.

 

6, Typical application circuit of ORIENT IGBT drive optocoupler:

1), Input switch signal at the IR end of the primary side, working current IF generally recommended to use 7mA-16mA.

2), The sub-side VCC end can choose 15V-30V and 10V-30V corresponding power supply conditions according to the different power supply conditions of the two VCC types of IGBT drive optocoupler.

3), The VEE end of the sub-side is generally 0V or gives a certain negative pressure.

4), Connect a 1uf or 0.1uf bypass capacitor between the VCC end and the VEE end on the secondary side.

5), The sub-side VO output end needs to be connected to a gate resistor Rg, and then connected to the gate of the IGBT, the smaller Rg can charge and discharge the IGBT input capacitor faster, thereby shortening the switching time, but the smaller Rg will lead to the IGBT input capacitance and parasitic inductance oscillation, the general Rg design is used between 10Ω and 47Ω.

Ray Wang    [email protected]    www.orient-opto.com