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DA9141-A

Automotive Grade, high efficiency, high current, quad-phase, step down DC-DC converter (Buck) PMIC

DA9141-A

The DA9141-A is a high efficiency, automotive grade, high current, quad-phase, step down DC-DC (Buck) converter with integrated switching FET's. The device can drive loads up to 40 Amps and is well suited for powering high performance AI/graphics processor cores in today’s complex automotive SoCs.

The device has an input voltage range of 2.8 V to 5.5 V and an output voltage range of 0.3 V to 1.3 V, making it suitable for a wide variety of low voltage systems. The DA9141-A only requires a minimum number of discrete components to operate, delivering a highly optimized BoM and footprint.

The DA9141-A device is part of the Dialog family of Flexible, Scalable, Reliable Automotive grade PMICs enabling an “Exact Fit” power solution. It is available in a 4.5mm x 7.0mm 60-pin FC-BGA package. A commercial grade version is also available (DA9141).

Lifecycle status

● Active

Features

2.8 V to 5.5 V input voltage

0.3 V to 1.3 V output voltage

Up to 40 Amps peak current drive

4 MHz nominal switching frequency

±1 % accuracy (static)

I2C-compatible interface (FM+)

4-phase operation

Remote sensing

Configurable GPIOs

Programmable soft start

DVC support

Voltage, current, and temperature supervision

Key safety features

  • Output under-voltage and over-voltage protection
  • Input under-voltage protection
  • 2-step over-temperature protection

-40 °C to +125 ºC ambient temperature Range

Benefits

Multi-Phase operation delivers better transient performance, lower losses, better efficiency, optimized thermal dissipation, and minimized ripple current and voltages when compared to a single-phase architecture

Lower PCB costs and smaller components with lower overall heights for low profile applications

Flexibility - Offers the opportunity to optimally place the Inductors and capacitors close to the point of load

Distributed power dissipation –more even distribution of heat – critical for efficient thermal management

Remote sensing guarantees the highest accuracy and supports multiple PCB routing scenarios without loss of performance

Fully programmable soft start limits the inrush current from the input to give a slope-controlled output voltage

Dynamic voltage control (DVC) enables adaptive adjustment of the supply voltage dependent on the load. This increases efficiency when the downstream circuitry enters low power or idle mode, resulting in power savings

Configurable GPIOs support a range of features including I2C, DVC and Power Good indicator

Applications

Navigation systems

Telematics

AI engines

Automotive infotainment

Advanced driver assistance systems (ADAS)

SiPP modules

Automotive SoC/FPGA high performance processing system requiring efficient, high current, power delivery

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Datasheets
Name Date Version
DA9141-A Datasheet (1.06 MB) 25/08/2021 1.6