In-vehicle infotainment steps up to USB3, adds wireless charging

August 07, 2014 // By Graham Prophet
Texas Instruments has added seven power management, SuperSpeed USB and logic products specifically intended for in-vehicle applications.

A power management integrated circuit (PMIC) is for infotainment systems: TI also introduced the first USB 3.0 devices and a free-positioning Qi wireless power transmitter for cars. The TPS659039-Q1 PMIC powers the DRA74x “Jacinto 6” processor and minimises system-level power consumption in next-generation infotainment system designs. The PMIC improves thermal management through adaptive voltage scaling, reduces electromagnetic interference (EMI) through internal and external synchronisation, and enables design flexibility with power sequencing – saving board space, reducing development time and the need for an additional microcontroller.

The TPS659039-Q1 powers on in only 15 msec, which gives users lightning-fast access to driver information, camera views, the navigation system and head-up display. Designers can also choose this PMIC to power dual- and quad-core ARM Cortex-15 processors in automotive and industrial applications.

In complex infotainment systems, the new SN74AUP1T34-Q1 and TXS0102-Q1 voltage level translators solve voltage mismatch issues by simply connecting incompatible CMOS logic communication between the processor and legacy peripheral devices operating at a different voltage.

TI's TUSB8041-Q1 and TUSB8020B-Q1 USB Hub controllers and TUS9261-Q1 USB-to-SATA bridge allow USB 3.0 connectivity for the first time in the car, for up to four USB ports. The TUSB devices enable USB 3.0 communications capability with the 5-Gbps data flow required for multimedia applications, including mobile phones, or external hard disk drives (HDD) and solid-state disk drives (SDD) for applications such as portable gaming or navigation systems. The two Hub controllers’ downstream ports support USB battery charging 1.2, charging downstream port (CDP), handshaking and a dedicated charging port (DCP) mode when the upstream port is not connected. The USB 3.0 Hub controllers enable USB charging and higher receive sensitivity than competing devices, reducing board space and easing system design.

The bq500414Q is the first automotive-qualified, Qi 1.1-compliant wireless power transmitter to offer free-positioning, foreign object detection and system-level EMI enhancement. The transmitter IC, which enables wireless charging from an automotive console with an A6 or A21