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1000V high side gate drive

M

mook Johnson

Jan 1, 1970
0
Gents,

I'm looking for a high side IGBT gate driver for use with a 1000V bus
voltage. I prefer something like an IR2110 but it is only rated for 600V.

Anything else out there besides gate drive transformers?

This is for a 3 phase AC induction motor inverter PWM switched at 10 -
20KHz.
 
J

John Larkin

Jan 1, 1970
0
Gents,

I'm looking for a high side IGBT gate driver for use with a 1000V bus
voltage. I prefer something like an IR2110 but it is only rated for 600V.

Anything else out there besides gate drive transformers?

This is for a 3 phase AC induction motor inverter PWM switched at 10 -
20KHz.

Optoisolate, into a floating gate driver powered by a small dc/dc
converter, maybe. Or use one of those slick ADuM series logic
isolators, good for 5 KV.

Didn't HP/Agilent/Agere have some parts like that, too?

John
 
S

Spehro Pefhany

Jan 1, 1970
0
Gents,

I'm looking for a high side IGBT gate driver for use with a 1000V bus
voltage. I prefer something like an IR2110 but it is only rated for 600V.

Anything else out there besides gate drive transformers?

This is for a 3 phase AC induction motor inverter PWM switched at 10 -
20KHz.

What's wrong with something like the IR2213?


Best regards,
Spehro Pefhany
 
M

Marte Schwarz

Jan 1, 1970
0
Hi Mook,
I'm looking for a high side IGBT gate driver for use with a 1000V bus
voltage. I prefer something like an IR2110 but it is only rated for 600V.

Anything else out there besides gate drive transformers?

Why not Gate transformers? The nice small ethernet transformers works great.

Marte
 
M

Mook Johnson

Jan 1, 1970
0
I didn't know IR made a 1200V high side gte driver. Last time I checked,
they only carried 600V models.

thanks
 
M

Mook Johnson

Jan 1, 1970
0
Most of the ate transformers I've seen require 50KHz operation or higher. I
didn't want to switch that high to minimize switching losses. I don't care
if the motor whistles, no one will hear it.
 
M

Mook Johnson

Jan 1, 1970
0
Good idea, I will look into these. I guess I could use the same bootstrap
circuit used on the ir2110 and charge a cap through a diode when the low
side FET is on then use that cap as a floating supply.
 
W

Winfield Hill

Jan 1, 1970
0
Mook said:
Spehro Pefhany wrote



I didn't know IR made a 1200V high side gte driver. Last time I
checked, they only carried 600V models.

thanks

They've been making 1200V parts for at least 8 years, and they
include in their lineup complete three-phase chips (six drivers).
The difficulty used to be finding distributor stock. DigiKey
now has stock on the IR2130, IR2131, IR2132, IR2135 and IR2137.
Some are available in 28-pin DIP packages.
 
J

John Larkin

Jan 1, 1970
0
Good idea, I will look into these. I guess I could use the same bootstrap
circuit used on the ir2110 and charge a cap through a diode when the low
side FET is on then use that cap as a floating supply.

Or buy a dip or sip $8 dc/dc converter.

John
 
M

Marte Schwarz

Jan 1, 1970
0
Hi Mook,
Most of the ate transformers I've seen require 50KHz operation or higher.
I didn't want to switch that high to minimize switching losses. I don't
care if the motor whistles, no one will hear it.

If you spent the gate unit a little more than only the transformators
windings then you will be able to switch a few Hz. I do this from near 0 Hz
up to a few 100 kHz across a 5 kV barrier, OK here I don't use ethernet
transformers, but for 1 kV they are OK easy available and cheap.

A very nice Appnote is AN461/0194 from ST. May be it is not exactly what you
need, but the ideas behind this paper should lead you to a good solution.
A good idea may also be the AN-950 from International rectifier.

Marte
 
G

Genome

Jan 1, 1970
0
mook Johnson said:
Gents,

I'm looking for a high side IGBT gate driver for use with a 1000V bus
voltage. I prefer something like an IR2110 but it is only rated for 600V.

Anything else out there besides gate drive transformers?

This is for a 3 phase AC induction motor inverter PWM switched at 10 -
20KHz.

I'm not going to bother looking myself but Unitrode came up with some
transformer coupled frequency modulated power/pwm transmission system for
IGBT drive type stuff.

TI bought them so if it is still made then......

Actually I will.... Here you go

http://www.unitrode.com/products/apps_prt.htm

UC3727..... New Chip Pair Provides Isolated Drive for High Voltage IGBTs

http://www.ti.com/sc/docs/psheets/abstract/apps/slua057.htm

Whoops, link doesn't work.

Bum, anyway...... If they still make it you might find it.

DNA
 
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