Datasheet DA9121 (Dialog Semiconductor) - 21

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DA9121 High-Performance, 10 A, Dual-Phase DC-DC Converter 4.2 Internal Circuits 4.2.1 IC_EN/Chip Enable/Disable
IC_EN is chip enable/disable control input. When IC_EN = 0, all blocks except for low IQ POR are powered-down and buck output is pulled-down.
4.2.2 nIRQ/Interrupt
The interrupt triggers events. Trigger conditions and control registers for each interrupt event are listed in Table 13. Some of these events are categorized as fault events and affect device operation (for example, buck disable), see Section 4.1.6.
Table 13: Interrupt List Polarity IRQ Status IRQ Mask Deglitch Name Trigger (Note 1) Register Register Period
Thermal warning N TJ rising above TWARN E_TEMP_WARN M_TEMP_WARN 0 s (event) Thermal critical N TJ rising above TCRIT E_TEMP_CRIT M_TEMP_CRIT 0 s (event) Buck1 Buck1 VOUT is in power-good power-good P voltage range E_PG1 M_PG1 0 s (event) (not under- or over-voltage) Buck1 V Buck1 OUT rising above over-voltage Rise:8 µs over-voltage N E_OV1 M_OV1 threshold (target voltage + Fall:8 µs (event) 150 mV) Buck1 Buck1 VOUT falling below under- under-voltage voltage N E_UV1 M_UV1 0 s threshold (target voltage - (event) VTH_PG) Buck1 over-current Buck1 current rising above N E_OC1 M_OC1 0 s over-current threshold (event) Buck1 Buck1 V power-good OUT is in power-good M_PG1_STAT P voltage range PG1 0 s (status) (Note 3) (not under- or over-voltage) (Note 2) Thermal warning M_VR_HOT N TJ rising above TWARN TEMP_WARN 0 s (status) (Note 3) (Note 2) Detect GPIO0 change for GPIO0 active trigger change N E_GPIO0 M_GPIO0 100 µs/ selected GPIO0_TRIG (event) 1 ms/ register 10 ms/ Detect GPIO1 change for GPIO1 100 ms active trigger change N E_GPIO1 M_GPIO1 selected GPIO1_TRIG (event) register
Datasheet Revision 2.0 18-Jul-2019
CFR0011-120-00 21 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