Datasheet DA9121 (Dialog Semiconductor)

DA9121 High-Performance, 10 A, Dual-Phase DC-DC Converter General Description
DA9121 is a power management unit (PMU) suitable for supplying CPUs, GPUs, DDR memory rails in single in-line pin package (SIPP) modules, smartphones, tablets, and other handheld applications. DA9121 operates as a single-channel dual-phase buck converter, each phase requiring a small external 0.10 µH inductor. It is capable of delivering up to 10 A output current at a 0.3 V to 1.9 V output voltage range. The 2.5 V to 5.5 V input voltage range is suitable for a wide variety of low- voltage systems, including, but not limited to, all Li-Ion battery supplied applications. With remote sensing, the DA9121 guarantees the highest accuracy and supports multiple PCB routing scenarios without loss of performance. The pass devices are fully integrated, so no external FETs or Schottky diodes are needed. A programmable soft start-up 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 (I2C- compatible) or with a programmable input pin. A configurable GPI allows multiple I2C address selection for multiple instances of DA9121 in the same application. DA9121 has integrated over-temperature and over-current protection for increased system reliability, without the need for external sensing components.
Key Features
■ 2.5 V to 5.5 V input voltage ■ Programmable soft-start ■ 0.3 V to 1.9 V output voltage ■ Voltage, current, and temperature ■ 4 MHz nominal switching frequency supervision ■ ■ ±1 % accuracy (static) -40 °C to +85 ºC ambient temperature range ■ ±5 % accuracy (dynamic) ■ Package: ■ I2C-compatible interface (FM+) 24WLCSP 2.5 mm x 1.7 mm (0.4 mm pitch) ■ Programmable GPIOs
Applications
■ SIPP modules (SoC, DRAM) ■ Ultrabooks™ ■ Smartphones ■ Wi-Fi Modules ■ Tablet PCs ■ Game Consoles ■ Infotainment
Datasheet Revision 2.0 18-Jul-2019
CFR0011-120-00 1 of 47 © 2019 Dialog Semiconductor Document Outline General Description Key Features Applications System Diagrams Contents 1 Terms and Definitions 2 Pinout 3 Characteristics 3.1 Absolute Maximum Ratings 3.2 Recommended Operating Conditions 3.3 Thermal Characteristics 3.3.1 Thermal Ratings 3.3.2 Power Dissipation 3.4 ESD Characteristics 3.5 Buck Characteristics 3.6 Performance and Supervision Characteristics 3.7 Digital IO Characteristics 3.8 Timing Characteristics 3.9 Typical Performance 4 Functional Description 4.1 DC-DC Buck Converter 4.1.1 Switching Frequency 4.1.2 Operation Modes and Phase Selection 4.1.3 Output Voltage Selection 4.1.4 Soft Start-Up and Shutdown 4.1.5 Current Limit 4.1.6 Thermal Protection 4.2 Internal Circuits 4.2.1 IC_EN/Chip Enable/Disable 4.2.2 nIRQ/Interrupt 4.2.3 GPIO 4.2.3.1 GPIO Pin Assignment 4.2.3.2 GPIO Function 4.2.3.3 Chip Configuration Select (CONF) 4.3 Operating Modes 4.3.1 ON 4.3.2 OFF 4.4 I2C Communication 4.4.1 I2C Protocol 5 Register Definitions 5.1 Register Map 5.1.1 System 5.1.2 Buck1 5.1.3 Serialization 6 Package Information 6.1 Package Outlines 6.2 Moisture Sensitivity Level 6.3 WLCSP Handling 6.4 Soldering Information 7 Ordering Information 8 Application Information 8.1 Capacitor Selection 8.2 Inductor Selection