ACT85610 Integrated High Voltage Power Loss Protection with PMIC SYSTEM CONTROL AND INTERFACE BENEFITS and FEATURES Dedicated Power Loss Indicator Pin (PLI) HIGH PERFORMANCE POWER LOSS 6 Programmable General Purpose I/Os PROTECTION 2 I C Serial Interface with Password Protection Wide 2.7 to 14V Operating Input Range ADC Monitoring of Critical Signals 20V Max Input Withstanding Voltage Independent On & Off Sequencing Control Programmable 5.5V to 31V Boost Storage Reset/Power Good Output Voltage Configurable Rails On/Off though I2C/GPIO 8A Synchronous Buck With 100% Duty Cycle Input Power, UV, and OV Monitoring Mode Configurable Interrupts to Inform Host of Inrush Current Control Faults/Status Change Programmable 10A Input Current Limit Thermal Alert and Protection Adjustable Start-Up Slew Rate Configurable Power Failure Levels SYSTEM MANAGEMENT Programmable up to 2.25MHz Buck Operating Versatile GPIO Functions Frequency for Small Inductor Size Watchdog Supervision Undetectable Transition from Input Supply to Interrupt Function Available Capacitor Bank Power 2 I C Safety bits to Enhance Immunity against Compatible with Many Types of Storage Caps: 2 Spurious I C Transactions. Super Caps, Electrolytic, Tantalum, POSCAP etc. Thermal Enhanced FCQFN Package Autonomous Health Monitoring Early Storage Capacitor Failure Detection Storage Capacitance Measurement eFuse, Boost, and Buck UV/OV/OC Protection APPLICATIONS High Efficiency PMIC with Integrated FETs Solid State Drives 4 High Voltage DC-DC Buck Converters Industrial Applications Integrated Synchronous Power Stage Backup Power Up to 96% Efficiency Optimized Single Stage Conversion from Vin = Hot Plug Devices 12V to Vout = 0.6V Excellent Dynamic Response Proprietary COT Control Algorithm Small Inductor Sizes Fast Transient Response 1 High Voltage Nonsynchronous Boost Regulator 1 LDO with Programmable Output Voltage 500 kHz 2.0MHz Configurable Frequency Range Near Constant Frequency Sensorless Over Current Protection (OCP) Output UV and OV Detection Optimized for Ceramic Output Capacitors Data Sheet Rev. B, April 7, 2022 Subject to change without notice 1 of 66 www.qorvo.com ACT85610 Integrated High Voltage Power Loss Protection with PMIC conduction mode. The frequency is selectable to ac- GENERAL DESCRIPTION commodate a variety of inductor values and sizes. The ACT85610 is a highly integrated, highly configura- When load current is reduced, frequency is automati- ble multiple output power management IC (PMIC) with cally scaled back to maintain high efficiency in discon- built-in power loss protection (PLP). There are four high tinuous mode (DCM) operation. This functionality ena- efficiency Bucks that can supply 3 x 4A and 1 x 2A out- bles the converter to achieve high efficiencies even at put current. The output voltage can go as low as 0.6V. very light loads. In addition, there is a 12V boost converter plus a Buck The buck converter output inductors can be optimized converter to provide the ICs bias power and to power for different applications. Proper inductor selection can the internal gate drivers for maximum efficiency. optimize transient response or efficiency targets. Based The power loss protection provides backup storage on these criteria, a suitable switching frequency can power in the event of an input power failure. A built-in also be selected to optimize these parameters. Careful Boost converter provides high voltage energy storage analysis of operating points - input and output voltage to minimize storage capacitor size requirements. The ratio and load profiles, such as typical operating cur- built-in Buck converter regulates the storage voltage to rents where efficiency is most important, peak switching a fixed output voltage during Supplement mode. The currents, inductor current ripple and the desired dy- ACT85610 contains internal, back-to-back eFuse FETs namic response should all be considered while select- to provide bi-directional input to output isolation. The IC ing inductors and switching frequency. All switching also provides hot swap and inrush current control. converters are internally compensated for stable opera- tion using Qorvo proprietary circuitry. This allows the The ACT85610 features a programmable storage ca- PMIC to work across a wide range of inductor values pacitor voltage to optimize the storage capacitor sizing and switching frequencies while allowing the end user and system run time. The internal ADC and health mon- to balance requirements such as efficiency, dynamic itoring provide an extra layer of protection and improve load transient response, inductor form factors and cur- system reliability and early capacitor failure notification. rent ratings, peak inductor current ripple and output volt- It automatically checks the storage capacitor health and age ripple. notifies the user when the energy in the storage caps is not sufficient for backup power. The built-in ADC also The ACT85610 also contains a Boost regulator. It oper- measures the input voltage, output voltage, storage ates from a wide input voltage range of 2.5V to 14V and voltage, eFuse current, and die temperature. The built- provides a programmable output voltage range of 10.8V in synchronous Buck converter maximizes energy to 13.2V. transfer from the storage caps to the system. The fixed output Buck regulator, Buck VCC, provides The high voltage step-down regulators use a proprietary the ACT85610 bias power to the ICs internal circuitry control architecture that is based on a constant on-time and gate drivers. Bias power is applied to the VCC pin. (COT) topology. It is designed for high efficiency, has The regulator provides up to 100mA of output current programmable switching frequency options, is suitable which can be used to power external circuitry or LDOs. for high conversion ratios to support output voltages as When the system level input voltage, VBUS, is 3.3V or low as 0.6V, and can operate at very low duty cycles as 5V, Buck VCC is not needed and the VCC pin can be required in low output voltage applications. directly tied to VBUS. The proprietary control architecture allows the regula- The ACT86510s integrated LDO can support 300mA tors to work at near constant frequency at a given oper- output current to power external circuitry. ating point, which is determined by the input and output 2 ACT85610 provides an I C bus interface to allow MCU voltage. As load is varied, the regulator operates at a control and monitoring. Its integrated voltage supervi- near constant frequency while operating in continuous Data Sheet Rev. B, April 7, 2022 Subject to change without notice 2 of 66 www.qorvo.com