InsideShowcase (Volume 27) is available in HTML and PDF format. - 179KBPowerFLEX™, a low-cost alternative to TO-220 High performance PLL clock drivers Digital control loop for 3-phase brushless dc motor Cost-effective gigabit ethernet transceiver SN75LVDM976, industry's first discrete dual mode LVDS SCSI transceiver TRF2050, a 1.2 GHz fractional-N/integrator-N syntheszier New external memory interface provides 8 hour speech duration |
Digital control loop for 3-phase brushless dc motorProduct Features
The TPIC43T01 is a monolithic device designed to provide RPM control to a 3-phase brushless DC 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+ Array™ TPIC1310. As a chipset, the TPIC43T01 and TPIC1310 offer enhanced functionality and lower cost which makes it a very attractive solution for high performance motor control applications. In addition, Texas Instruments 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 core of the control circuit 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. TPIC43T01Features/Benefits
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 controller TPIC43T01, the TPIC1310 allows the customer the ability to optimize the current switching capability of the output stage. TPIC1310Features/Benefits
The TPIC43T01 is available in a 38-pin plastic thin small-outline surface-mount package (DA) for reduced printed board space requirement. The TPIC1310 is available in the low-cost 15-pin through-hole (KTS) and surface-mount (KTR) PowerFLEX™ packaging. Applications:
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for minimized power dissipation
