VLA500-01 Ver la hoja de datos (PDF) - Powerex

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Fabricante

VLA500-01

Hybrid IC IGBT Gate Driver + DC/DC Converter

Powerex 

Powerex, Inc., 200 E. Hillis Street, Youngwood, Pennsylvania 15697-1800 (724) 925-7272

VLA500-01

Hybrid IC IGBT Gate Driver +

DC/DC Converter

Application Circuit

+15V

Common

+5V

Control

Fault

VLA500-01

12345 67

+

C1

B1

R4

C4

OP1

R3

17 18 19 20 21 22 23 24 25 26 27 28 29 30

D1

R2

DZ1

CS Ctrip

R1

++

RG

G

C2

C3

DZ2

DZ3

E

IGBT MODULE

Component Selection:

Design

Typical Value

D1

0.5A

DZ1

30V, 0.5W

DZ2, DZ3

18V, 1.0W

C1

150µF, 35V

C2, C3

100-1000µF, 35V

C4

0.01µF

CS

0-1000pF

Ctrip

R1

0-200pF

4.7kΩ, 0.25W

R2

3.3kΩ, 0.25W

R3

1kΩ, 0.25W

R4

4.7kΩ, 0.25W

OP1

NEC PS2501

B1

CMOS Buffer

Description

VCE detection diode – fast recovery, Vrrm > VCES of IGBT being used (Note 1)

Detect input pin surge voltage protection (Note 2)

Gate surge voltage protection

VD supply decoupling – Electrolytic, long life, low Impedance, 105°C (Note 3)

DC/DC output filter – Electrolytic, long life, low Impedance, 105°C (Note 3,4)

Fault feedback signal noise filter

Adjust soft shutdown – Multilayer ceramic or film (see application note)

Adjust trip time – Multilayer ceramic or film (see application note)

Fault sink current limiting resistor

Fault signal noise suppression resistor

Fault feedback signal noise filter

Fault feedback signal pull-up

Opto-coupler for fault feedback signal isolation

74HC04 or similar – Must actively pull high to maintain noise immunity

Notes:

(1) The VCE detection diode should have a blocking voltage rating equal to or greater than the VCES of the IGBT

being driven. Recovery time should be less than 200ns to prevent application of high voltage to Pin 30.

(2) DZ1 is necessary to protect Pin 30 of the driver from voltage surges during the recovery of D1.

(3) Power supply input and output decoupling capacitors should be connected as close as possible to the pins of the gate driver.

(4) DC-to-DC converter output decoupling capacitors must be sized to have appropriate ESR and ripple current

capability for the IGBT being driven.

Rev. 2/08

5

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