TI Unveils Integrated Power Controller for Automotive Applications
Texas Instruments Inc. (TI) introduced a dual output power supply for automotive applications that ensures stable, uninterrupted output voltages, even in cases where the input voltage drops significantly below the output voltage levels. The start/stop function in many new car models increases fuel economy, but also leads to significant drops in the supply voltage when restarting the engine. The TPS43330-Q1 family remains fully functional during such voltage drops and ensures that applications continue to work without interruption or performance reduction. The devices’ ultra-low quiescent current makes the use of a separate standby voltage supply unnecessary, thus reducing system cost and complexity.
Key features and benefits of the TPS43330-Q1 family include:
-- Wide input voltage range of 2 to 40V and transients up to 60V ensure continued operation, even under severe battery voltage conditions.
-- Ultra-low quiescent current as low as 35µA and lower shutdown current of 5µA reduces the overall application power consumption from the battery in standby operation, extending battery lifetime and eliminating the need for a standby voltage regulator.
-- Spread spectrum frequency modulation reduces conducted electromagnetic interference and allows for simpler, lower-cost filters.
-- Individual enable and power good signals for both supply rails allow the customer flexible power sequencing based on specific application needs.
-- Integration of multiple voltage rails and voltage supervisors reduces board space, design complexity and system cost compared to a discrete solution.
-- Dedicated high-side FET driver enables overall efficiency improvement by bypassing the external reverse-battery protection diode with an external PMOS FET.
Samples of the TPS43330-Q1 and TPS43332-Q1 are available now in an HTSSOP-38 (DAP) package. Suggested retail pricing for the TPS43330-Q1 family ranges from US $2.85 to $3.10 in 1000-unit quantities.
