Low-voltage motor-drive ICs simplify power-supply design

International Rectifier has introduced a family of combined high-side and lowside drivers, rated to 200V for halfbridge motor-drive applications from 24V to 100V.

Their low quiescent current reduces overall cost and footprint by eliminating the need for an auxiliary power supply.

The IRS200x family can be used to drive power MOSFETs or IGBTs, and are able to provide gatedrive voltage from 10V to 20V, turn-on current of 290mA, and turn-off current of 600mA. The control circuitry is directly compatible with CMOS and TTL signals at 3.3V, 5V or 15V, enabling further savings in external components.

Three types of driver are offered in 8-pin SOIC or DIP packages, allowing designers to meet a range of functional and manufacturing requirements. The IRS2001 has independent high-side and low-side inputs, while the IRS2003 combines independent inputs with dead-time protection. The IRS2004 has dead-time protection and also provides a Shutdown pin.

Under-Voltage Lockout (UVLO) protection is a standard feature with all devices. In addition, a highpulse- current output buffer minimises driver crossconduction, while floating-channel design allows direct drive of an N-channel high-side MOSFET or IGBT operating from 10V to 200V.

 

FEATURES Tolerant to negative transient voltage High dV/dt immunity Matched propagation delay for both channels Outputs in phase with inputs

APPLICATIONS Power tools Low-voltage servo drives Electric garden equipment Electric vehicles

 

 

 

• austriamicrosystems’ AS5046 magnetic encoder, page 070907
• National Semiconductor’s, ADC14DS105 dual ADC, page 070926
• National Semiconductor’s, LMH6552 amplifier, page 070932

 

www.irf.com/whats-new/nr070508.html