DA9141-A
High-Performance, 25 A/40 A Peak, DC-DC
Converter for Automotive Applications
Datasheet
Revision 2.0
28-Jan-2022
CFR0011-120-00
1 of 50
�� 2022 Renesas Electronics
General Description
The DA9141-A is an Automotive grade, high efficiency, 25 A continuous and 40 A peak, four-phase,
DC-DC stepdown converter (buck). It is fully AEC-Q100 qualified.
With remote sensing, the DA9141-A improves output voltage regulation at the point of load.
Fully integrated switching FETs means no external FETs or Schottky diodes are needed.
A programmable soft startup can be enabled, which limits the inrush current from the input node and
secures a slope-controlled rail activation.
The dynamic voltage control (DVC) supports adaptive adjustment of the supply voltage dependent on
the processor load, via either a direct register write using the communication interface (I
2
C
compatible) or with a programmable input pin.
A configurable GPI allows multiple I
2
C address selection for multiple instances of DA9141-A in the
same application.
DA9141-A has integrated over-temperature and over-current protection for increased system
reliability, without the need for external sensing components.
Key Features
■ 2.8 V to 5.5 V input voltage
■ 0.5 V to 1.3 V output voltage
■ Up to 40 A peak output current, 25 A
continuous output current
■ 4 MHz nominal switching frequency
■ Quad-phase operation
■ 110 nH inductor per phase
■ 220 µF output capacitor
■ ±1 % output voltage accuracy (static)
■ ±5 % load transient
■ I
2
C-compatible interface (FM+)
■ Programmable GPIOs
■ Programmable soft startup
■ Voltage, current, and temperature supervision
■ Automotive Grade 1
■ 60 FC-BGA 4.5 mm x 7 mm (0.65 mm pitch)
■ 180 mm
2
total solution area
■ AEC-Q100 qualified
Applications
■ Navigation systems
■ Telematics
■ AI engines
■ Automotive infotainment
■ Advanced driver assistance systems (ADAS)
■ SiPP modules
DA9141-A
High-Performance, 25 A/40 A Peak, DC-DC
Converter for Automotive Applications
Datasheet
Revision 2.0
28-Jan-2022
CFR0011-120-00
2 of 50
© 2022 Renesas Electronics
Contents
General Description ............................................................................................................................ 1
Key Features ........................................................................................................................................ 1
Applications ......................................................................................................................................... 1
Figures .................................................................................................................................................. 3
1 Terms and Definitions ................................................................................................................... 5
2 Block Diagram ............................................................................................................................... 6
3 Pinout ............................................................................................................................................. 7
4 Characteristics .............................................................................................................................. 9
4.1 Absolute Maximum Ratings .................................................................................................. 9
4.2 Electrostatic Discharge Ratings ............................................................................................ 9
4.3 Recommended Operating Conditions ................................................................................... 9
4.4 Thermal Characteristics ...................................................................................................... 10
4.4.1 Power Derating Curves........................................................................................ 11
4.5 Buck1 Characteristics ......................................................................................................... 11
4.6 Performance and Supervision Characteristics .................................................................... 14
4.7 Digital IO Characteristics..................................................................................................... 14
4.8 Timing Characteristics ......................................................................................................... 15
4.9 Typical Performance ........................................................................................................... 16
5 Functional Description ............................................................................................................... 17
5.1 Operating Modes ................................................................................................................. 17
5.1.1 ON ........................................................................................................................ 17
5.1.2 OFF ...................................................................................................................... 17
5.2 DC-DC Buck Converter ....................................................................................................... 17
5.2.1 Switching Frequency ........................................................................................... 17
5.2.2 Operation Modes and Phase Selection ............................................................... 17
5.2.3 Output Voltage Selection ..................................................................................... 18
5.2.4 Soft Startup and Shutdown .................................................................................. 18
5.2.5 Current Limit ........................................................................................................ 18
5.2.6 Temperature Protection ....................................................................................... 19
5.3 Control Circuits .................................................................................................................... 19
5.3.1 Chip Enable and Disable ..................................................................................... 19
5.3.2 GPIO .................................................................................................................... 20
5.3.3 Interrupt................................................................................................................ 22
5.4 I
2
C Communication ............................................................................................................. 24
5.4.1 I
2
C Protocol .......................................................................................................... 24
6 Register Definitions .................................................................................................................... 26
6.1 Register Map ....................................................................................................................... 26
6.2 Register Descriptions .......................................................................................................... 28
6.2.1 Buck1 ................................................................................................................... 39
6.2.2 OTP Control ......................................................................................................... 43
7 Package Information ................................................................................................................... 45
7.1 Package Outlines ................................................................................................................ 45
7.2 Moisture Sensitivity Level.................................................................................................... 46