The number of H-bridge motor drivers used in the electronic throttles and various valves of automobiles, is on the rise, stimulating demand for system miniaturization and cost reduction. In addition, On-Board Diagnostic II (OBDII), the second generation of on-board self-diagnostic equipment requirements, will become mandatory in 2022, requiring automotive motor driver ICs to have SPI communication functions.
The new ICs feature 5A[1] 2ch output drivers that help to reduce mounting area. A 10A[1] 1ch drive in parallel mode is also possible. They can be daisy-chained, and also have functions that control motors only by SPI communication, both of which reduce MCU ports. Housed in 6.0 mm x 6.0 mm small QFN packages, the new motor drivers contribute to the system miniaturization that the market demands.
Key Features
- Built-in 2ch H-bridge driver
Output driver circuit is configured by DMOS FET with low on-resistance, realizing a 5A[1] 2ch H-bridge driver. A 10A[1] 1ch drive in parallel mode is also possible. - SPI communication
Daisy-chain connectivity and motor control only by SPI communication both reduce MCU ports, contributing to system miniaturization. - Small packages
TB9054FTG: Small surface mount wettable flank VQFN 40pin package with E-pad
TB9053FTG: Small surface mount power QFN 40pin package with E-pad
Applications
Automotive applications such as throttle valves, various engine valves, retractable door mirrors, and body systems, including electric door latches