Description:

The TPS624xx-Q1 device family is a series of dual synchronous step-down DC/DC converters for automotive applications such as advanced driver assistance systems (ADAS). The family provides two independent output voltage rails supplied from standard 3.3-V or 5-V rails, as well as optimized fixed output voltages to power CMOS imagers or serializers-deserializers in ADAS camera modules. The EasyScale™ serial interface supports output voltage modification during operation. The fixed-output-voltage versions of the TPS624xx-Q1 support simple dynamic voltage scaling of low-power processors with single-pin control. The TPS624xx-Q1 device family operates at a fixed 2.25-MHz switching frequency and enters power-save mode at light load currents to maintain high efficiency across the entire load current range. For low-noise applications, the device can be forced into fixed-frequency PWM mode by pulling the MODE/DATA pin high. Shutdown mode reduces current consumption to a typical value of 1.2 µA. The device allows the use of small inductors and capacitors, enabling a small solution size.

Features:

Qualified for automotive applications

AEC-Q100 qualified with the following results:

Device temperature grade 1: –40°C to 125°C operating junction temperature range

Device HBM ESD classification level 2

Device CDM ESD classification level C4B

High efficiency – up to 95%

VIN range: 2.5 V to 6 V

2.25-MHz fixed-frequency operation

Output current: TPS62406-Q1 1000 mA/400 mA

Output current: TPS62407-Q1 400 mA/600 mA

Output current: TPS62422-Q1 1000 mA/600 mA

Output current: TPS62423-Q1 800 mA/800 mA

Output current: TPS62424-Q1 800 mA/800 mA

Fixed output voltage

EasyScale™ optional single-pin serial interface

Power-save mode at light load currents

180° out-of-phase operation

±1% output voltage accuracy in PWM mode

Typical 32-µA quiescent current for both converters

100% duty cycle for lowest dropout

Applications:

Automotive point-of-load regulators

ADAS camera modules

Camera monitor system (CMS)

Infotainment systems and instrument clusters