Motor control devices offer enhanced functionality, lower cost

TI's TPIC43T01 is a monolithic device designed to provide precision RPM control to a three-phase DC brushless motor. The controller is the industry's first to feature an EEPROM programmable digital filter providing increased flexibility and minimized design efforts.

The TPIC43T01's gate drive outputs are designed to drive six external discrete N-channel power FETs or an integrated driver such as the new Power+ Arrays™ TPIC1310. As a chipset, the TPIC43T01 and TPIC1310 offer enhanced functionality and lower cost, which makes it an attractive solution for high-performance motor control applications. The chipset is well suited for other applications such as printers, copiers, fax machines, scanners, plotters, fans and robotics.

In addition, TI provides a PC-based Windows™ compatible software package to input the motor and system characteristics and select the digital filter coefficients to stabilize the system. The software program outputs control parameters to a JEDEC compatible file to program the TPIC43T01 through a third-party device programmer.

The TPIC43T01 provides a variable reluctance speed sensor interface and a Hall-effect position interface. The speed interface receives an external sinusoidal signal and converts it to a digital speed input for lock detect. The control circuit's core is a hardware implementation of a digital signal processing algorithm consisting of a digital integrator and filter. User programmable filter coefficients set compensation pole and zero to stabilize the system response. Programmable parameters are stored in an internal EEPROM.

The TPIC1310 is a monolithic gate-protected power DMOS array that consists of six electrically isolated N-channel enhancement-mode DMOS transistors configured as a three-half H-bridge. When used with the TPIC43T01 controller, the TPIC1310 gives the customer the ability to optimize the current switching capability of the output stage.

TPIC43T01 38-pin TSOP surface mount $2.08

TPIC1310 15-pin through-hole PowerFLEX™ $1.98

15-pin surface mount PowerFLEX $1.98

Suggested resale pricing in U.S. dollars in 1K quantity.

Power+ Arrays and PowerFLEX are trademarks of Texas Instruments. Windows is a trademark of Microsoft Corp.

For complete information, order: Data Sheets (SLIS081 and SLIS071). See Order form

TPIC43T01 features/benefits
Digital control:

One main feedback loop to simplify design of phase-lock-loop response
No external control loop compensation components to reduce parts count
PWM power conversion for high efficiency

User programmable:

Frequency divide by select to set motor target RPM
External speed control input for real-time select of fast/slow RPM
Improved precision allowing lower-tolerance external discrete components to reduce cost

On-board functions and protection for enhanced performance and improved reliability:

Under-voltage lockout protection
Power-up clear
Shutdown logic
Charge pump

TPIC1310 features/benefits

Low rDS(on) of 0.25 ohms for minimized power dissipation
30-V capability for extended voltage operation
3-A continuous current for increased motor drive
Input transient and ESD protection for increased reliability