Re: Full Bridge IR 2153 Configuration

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "K. C. Herrick by way of Terry Fritz <twftesla-at-qwest-dot-net>" <kchdlh-at-juno-dot-com>

A word of caution regarding the high/low-side IR drivers:  I had tried to
use that type of IR IC early-on, in my s.s. coil, and seem to have found
that the high e.m. field of the secondary interfered with the driver's
internal high-impedance high-side coupler circuit--to the extent that I
had to abandon the effort and go to a home-made bipolar-transistor
h-bridge driver + gate-transformers.  Those interested in those ICs might
want to make sure they will withstand the ambient field before committing
to pc boards...

Ken Herrick

On Thu, 05 Dec 2002 22:31:22 -0700 "Tesla list" <tesla-at-pupman-dot-com>
writes:
 > Original poster: "David Sharpe by way of Terry Fritz
 > <twftesla-at-qwest-dot-net>" <sccr4us-at-erols-dot-com>
 >
 > IR supplied info today for full bridge driver using two (2)
 > IR2153's
 > A series resistor is wired from Rt terminal of first (master) chip
 > and
 >
 > wired to Ct of second (slave) chip.  A pull up resistor is
 > installed
 > between Ct of Vcc of second chip to allow minimum voltage
 > on Ct to agree with following relationship:
 >
 > 1/6Vcc (shutdown) < Ct <= 1/3Vcc
 >
 > According to Applications Engineering, both chips will now be
 > running
 > in anti-phase relationship to one another (i.e. a full bridge
 > driver).
 >
 > When I build PCB will design board to support master or slave
 > configuration (maybe setup via a dip switch or optocoupled
 > [isolated] mode).
 >
 > To support a same phase configuration (as self balancing multilevel
 > converter), an inverter must be used between Rt of master and Ct
 > of slave chip; a high speed optocoupler will nicely perform this
 > isolated
 > signal inversion function, and allow galvanic isolation between
 > stages.
 >
 > Now its time to start laying out and assembling some PCB's...
 > Still consider a full bridge converter capable of ~2kW for silicon
 > cost of < $20.  Incredible...   :^D
 >
 > Regards
 > Dave Sharpe, TCBOR
 > Chesterfield, VA. USA
 >
 >
 >
 >