BG2A-K datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > Development board/suite/development tools> BG2A-K

BG2A-K: DescriptionKIT DEV BOARD FOR IGBT; CategoryDevelopment board/suite/development tools; File Size619KB，4 Pages; ManufacturerPOWEREX; Websitehttp://www.pwrx.com/Home.aspx; Environmental Compliance

Download Datasheet Parametric Compare View All

BG2A-K Overview

KIT DEV BOARD FOR IGBT

BG2A-K Parametric

Parameter Name	Attribute value
type	Power management
Function	IGBT power module driver
Embedded	no
IC/parts used	Powerex IGBT module
Main attributes	-
What's included	plate
Auxiliary properties	-

Preview

Download Datasheet

View All

BG2A – Universal Gate Drive Prototype Board

Application Notes

*Refer to ordering information

for included components.

Description:

BG2A is a fully isolated two channel gate drive circuit designed for use with dual IGBT modules. The

BG2A utilizes Powerex VLA500-01 or VLA502-01 hybrid gate drivers to provide efficient switching of modules rated

up to 1400A. The hybrid gate drivers also provide protection against unexpected short circuit conditions using

desaturation detection. The VLA500-01 and VLA502-01 hybrid gate drivers have an integrated DC-to-DC converter

with 2500VRMS isolation to provide isolated gate drive power. Control signals are isolated using high speed opto-

couplers with 15kV/µs common mode noise immunity. The BG2A provides an isolated fault feedback signal if a

short circuit condition is detected.

Features:

• Up to 12A Peak Output Current

• 2500VRMS isolation for control power and signals

• Standard AMP MTA .100” Connectors

• Operates from a single 15VDC supply

• Wide output voltage swing +15V/-8V

• Compact Size 4” x 2.1” (101mm x 53mm)

Applications:

BG2A is designed for use with all Powerex NF, A, S

and NFH series IGBT modules.



Use VLA500-01 hybrid gate drivers for



Powerex NF, A and S-Series IGBT modules

Use VLA502-01 hybrid gate drivers for

Powerex NFH Series IGBT modules

Use VLA500K-01R hybrid gate drivers for

Series modules

Ordering Information: BG2A-NF

is a kit that includes a bare PCB with two VLA500-01 drivers

(For use with NF, A and S-Series IGBT modules)

BG2A-NFH

is a kit that includes a bare PCB with two VLA502-01 gate drivers

(For use with NFH-Series IGBT modules)

BG2A-K

is a kit that includes a bare PCB with two VLA500K-01R gate drivers

(For use with 1700V IGBT modules)

Publication Date: 09-12-2014

Rev. 5

Circuit Explanation:

The BG2A is a basic two channel

gate driver designed around the recommended application

circuit for the Powerex VLA500 series hybrid gate drivers.

A functional block diagram of the VLA500 series hybrid gate

driver is shown for reference in Figure 1. The VLA500-01

and VLA500K-01R use a standard high speed open

collector type opto-coupler with a maximum turn-off

propagation delay of 1.3µs. This makes it suitable for

industrial applications with operating frequencies of up to

20kHz. The VLA500-01 is recommended for use with

Powerex NF-Series and A-Series IGBT modules. The

VLA502-01 uses a high speed buffered output type opto-

coupler which provides a maximum propagation delay of

0.7µs. This makes it suitable for use in high frequency

applications operating at more than 20kHz. The

VLA502-01 is recommended for use with Powerex

NFH-Series IGBT modules. For additional detailed

information on the operation of the hybrid gate drivers

please see the individual datasheets.

Application Notes

Figure 1: VLA500 Series Block Diagram

A complete schematic and component selection guide for the BG2A is shown in Figure 2. The board will normally be

operated with two input voltage sources. A 5V logic source (+V L) provides drive for the high speed opto-couplers

inside the hybrid gate drivers and pull-up voltage for the fault signal isolation optos OP1 and OP2. A 15V power

supply (+VS) provides power for the gate driver and is connected to the primary side of the hybrid gate driver’s built in

DC-to-DC converter at Pins 1, 2 and 3, 4. The +15V source is decoupled with the low impedance electrolytic capacitor

C1. In the BG2A circuit a 1000µF capacitor was selected for C1 so that the same capacitor could be used for C1, C2,

C3, C5 and C6. In most applications this will be much larger than necessary to support the drivers ripple current.

Typical applications will be able to use 100µF or less depending on the load current and the distance from the main

15V supply filter capacitors. The hybrid’s built in DC-to-DC converter provides isolated gate drive power which

consists of +16.4V (VCC) at Pin 19 and -9V (VEE) at Pins 21 and 22. These supplies share a common ground at

Pin 20. The gate drive power supplies are decoupled using the low impedance electrolytic capacitors C2, C3, C5 and

C6. It is very important that these capacitors have low enough impedance and sufficient ripple current capability to

provide the required high current gate drive pulses. The 1000µF capacitors used on the BG2A are sized to supply

12A gate pulses at a 20kHz rate. If the application is operating at lower frequency or lower peak current it may be

possible to reduce the size of these capacitors. Consult the hybrid gate driver individual datasheets for details on

selecting the decoupling capacitors.

The VEE and VCC supplies are connected to the driver’s output stage to produce gate drive at Pins 23 and 24.

The gate drive current is adjusted by selecting the appropriate series gate resistance (R G). RG will normally

be adjusted to provide suitable drive for the module being used. For more information see Powerex IGBT

module application notes. Protection against gate voltage surges is provided by DZ2, DZ3, DZ5, and DZ6. These

zener diodes also help to control short circuit currents by shunting miller current away from the gate. Short circuit

protection is provided by means of desaturation detection. For details on the operation of this circuit consult the

specific datasheet. The collector voltage of each IGBT is detected through the series connected high voltage

blocking diodes D1, D2 and D3, D4. The combined blocking voltage of the series connected diodes must be equal

to or greater than the VCES rating of the IGBT. For applications using lower voltage devices it may be possible to

use a single detection diode. DZ1 and DZ4 protect the gate driver’s detect input (Pin 30) from voltage surges

during reverse recovery of the high voltage blocking diodes. The CS and CT capacitors are used to adjust the

drivers protection circuit trip time and slow shut-down speed. The driver’s default settings are sufficient for many

applications and therefore these capacitors can be omitted. For details on the use of CT and CS consult the

specific datasheet.

If the gate driver’s short circuit protection is activated it immediately shuts down the gate drive and pulls

Pin 28 low to indicate a fault. Current flows from Vcc (Pin 19) through the LED in fault isolation opto (OP1, OP2)

to Pin 28. The transistor in the fault isolation opto turns on and pulls the fault signal line (FO) at Pin 4 of CN1 low.

This opto isolated signal can now be used by the controller to detect the fault condition.

Publication Date: 09-12-2014

Rev. 5

The control signal interface is designed for use with standard 5V CMOS logic. The control input signals at Pins 2

and 3 of connector CN1 are used to turn the IGBTs on and off. These signals are active low which means that the

gate driver output will be high (IGBT on) when they are pulled low. These control pins are connected directly to

Pin 7 of the hybrid gate driver which is connected internally through a limiting resistor to the cathode of the LED in

the high speed opto-coupler (see Figure 1). W hen the control signal is pulled low current flows from the 5V logic

supply through the LED to turn the gate driver’s output on. The control pins must be pulled low with a buffer that is

capable of sinking 15mA in order to turn on the high speed opto-coupler inside the VLA500 series driver. A CMOS

buffer that actively pulls its output high is recommended for maintaining good common mode noise immunity in the

off state. Open collector type drive is not recommended.

The fault signal line on Pin 4 of CN1 is active low which means that a fault condition will be indicated by a low level

signal. During normal operation Pin 4 is pulled high to the +5V supply (+VL) by the 4.7K resistor R3. If either of the

VLA500 series gate drivers detects a short circuit condition the fault isolation optos (OP1, OP2) turn on and pull Pin

4 of CN1 low. W hen a fault is detected the hybrid gate drivers disable the output and produce a fault signal for a

minimum of 1ms. Any signal on the fault line that is significantly shorter than 1ms cannot be a legitimate fault so it

should be ignored. Therefore, for a robust noise immune design, it is recommended that an RC filter with a time

constant of approximately 10µs be added between Pin 4 and the controller as shown in Figure 3.

Printed Circuit Layout:

Figure 4 shows the layout of the BG2A two channel gate driver board. The compact

4" x 2.1" circuit board with only 24 components clearly demonstrates the advantage of using the VLA500 series

hybrid gate drivers. One important feature is the use of three ground plane islands for the regions of the PCB

having high voltage differences. Two of the islands are tied to the emitter/circuit common (Pin 20) of each output

channel. The third island is connected to logic interface common at Pin 6 of CN1. This layout prevents undesirable

coupling of noise between the control side and the gate drive channels.

Application Notes

Component Side Copper

Component Legend

Figure 4: BG2A Printed Circuit Board Layout

Solder Side Copper

Publication Date: 09-12-2014

Rev. 5

BG2A-K Related Products

	BG2A-K	BG2A
Description	KIT DEV BOARD FOR IGBT	Universal Gate Drive Prototype Board

Recommended Resources

One of the automatic Yanbian delta-shaped step-down starting circuits

Suppression of the influence of power supply voltage waveform (a)

HTL-CMOS interface circuit

The most practical basic diagram circuit 34 - voltage leakage protection circuit

System block diagram of IGBT application in induction cooker

Computer motherboard circuit diagram 815 1_13

C2000 Posting: C2000 post is here. After a few days of study, I finally finished it....; wdlm456 Microcontroller MCU

Looking for Bluetooth development engineer with monthly salary of 10,000 yuan [Shanghai]: Our company is looking for a Bluetooth development engineer for Linux. The company is located near Zhongshan Park in Shanghai. Salary: 10,000 RMB/month. Job requirements: 1. Proficient in LINUX system...; poonhm Embedded System

Has anyone used GaN power devices?: Gallium nitride (GaN) material has a bandgap width three times that of Si material, a critical breakdown electric field 10 times that of Si, and a saturation drift velocity 2.5 times that of Si. In pa...; buildele Power technology

I want to be an engineer: I am now a freshman and will soon be a sophomore. I want to take a certificate after graduation. What should I learn in these few years? It would be best if you can be more specific. I want to learn b...; 傻傻的熊猫 Recruitment

This is how the bus card is used: RFID technology is divided into active RFID, passive RFID and semi-active RFID. Passive RFID is the most widely used in the world. The bus card is a typical passive RFID card. It does not have its own...; soso RF/Wirelessly

How to read the memory data to the chip's data port DOUT on the rising edge of pulse RD?: Can this pulse signal be used directly as a clock? ? For example, if we write: always @(posedge RD ) DOUT_EN==1'b1; to generate an enable signal, do we need to create a clock for this RD during synthe...; eeleader-mcu FPGA/CPLD

Shortcut: 00 01 02 03 04 05 06 07 08 09 0A 0C 0F 0J 0L 0M 0R 0S 0T 0Z 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 1H 1K 1M 1N 1P 1S 1T 1V 1X 1Z 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 2G 2K 2M 2N 2P 2Q 2R 2S 2T 2W 2Z 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 3G 3H 3J 3K 3L 3M 3N 3P 3R 3S 3T 3V 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4M 4N 4P 4S 4T 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5E 5G 5H 5K 5M 5N 5P 5S 5T 5V 60 61 62 63 64 65 66 67 68 69 6A 6C 6E 6F 6M 6N 6P 6R 6S 6T 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7M 7N 7P 7Q 7V 7W 7X 80 81 82 83 84 85 86 87 88 89 8A 8D 8E 8L 8N 8P 8S 8T 8W 8Y 8Z 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9F 9G 9H 9L 9S 9T 9W

Popular Components