en

Cart

Your cart is empty.

IC reference design search

Qorvo ACT4911 | Demoboard UG-107

ACT4911EVK1-301 User’s Guide

Overview

TopologyOther Topology
Input voltage3.3 V
Output 12 A
IC revision1.0

Description

The ACT4911 device is a highly integrated power loss protection IC. It provides backup storage power in the event of an input power failure. A built-in boost converter provides high voltage energy storage to minimize storage capacitor size equirements. The built-in buck converter regulates the storage voltage to a fixed output voltage. It contains internal, back-toback eFuse FETs to provide bi-directional input to output isolation. The IC also provides hot swap and inrush current control. The ACT4911 is very flexible and can easily be configured with I2C and external components. It features programmable storage capacitor voltage to optimize the storage capacitor sizing and system run time. The internal ADC and health monitoring provide an extra layer of protection and improve system reliability and early capacitor failure notification. It automatically checks the storage capacitor health and notifies the user when the energy in the storage caps is not sufficient for backup power. The ADC also measures the input voltage, output voltage, storage voltage, eFuse current, and die temperature. The builtin synchronous buck converter maximizes energy transfer from the storage caps to the system. ACT4911 provides an I2C bus interface to allow MCU control and monitoring. There are supervisor monitors for the input voltage, output voltage, and storage voltage. It is available with the thermal enhanced QFN5x5 28 pins package.

Features

  • Wide 2.7-to-8V Operating Input Range
  • 10V Max Input Blocking Voltage
  • Adjustable Bus Voltage Start-Up Slew Rate for InrushCurrent Control
  • Configurable Input power Failure Level
  • Programmable up to 10A Input Current Limit
  • Programmable 5V to 36V Boost Storage Voltage
  • 36V@6A Synchronous Buck Supports 100% DutyCycle
  • Programmable up to 1.13MHz Buck Operating Frequencyfor Small Inductor Size
  • Undetectable Transition from Input Supply to CapacitorBank Power
  • Compatible with Different Types of Storage Caps:Super Caps, Electrolytic, Tantalum, POSCAP
  • ADC Monitoring of Critical Signals
  • Autonomous Health Monitoring for Detection of Earlier Storage Capacitor Failures
  • Configurable Interrupts to Inform Host for any\
  • Faults/Status Change
  • eFuse, Boost, and Buck UV/OV/OC Protection
  • Thermal Alert and Protection
  • Thermal Enhanced FCQFN 5×5-28 package

Typical applications

  • Solid State Drive/ Hot Plug Devices
  • Industrial Applications
  • Backup Power

Products

Order Code Data­sheet Downloads Product seriesApplicationPCB/Cable/PanelModularityWire SectionλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
L
(µH)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
MountPinsRowsGenderTypeIR
(A)
Packaging Samples
691213710002
STE 3D ALT EAG IGS CADWR-TBL Series 213 - 5.00 mm Horiz.l Entry Modular Rising Cage Clamp PCB Yes 26 to 16 (AWG) 0.129 to 1.31 (mm²) 2 Horizontal 10 Box
150060VS75000
STE ALT EAG LTS PSP CAD IGSWL-SMCW SMT Mono-color Chip LED Waterclear 570 Bright Green 572 40 2 AlInGaP 140 SMT Tape and Reel
61300211121
IGE STE 3D ALT EAG CADWR-PHD 2.54 mm THT Pin Header THT 2 Single Pin Header Straight 3 Bag
61300411121
IGE STE 3D ALT EAG CADWR-PHD 2.54 mm THT Pin Header THT 4 Single Pin Header Straight 3 Bag
74438357022
STE ALT EAG CAD LTS PSP SPE IGS CADWE-MAPI SMT Power Inductor 2.2 7 22 26 35 SMT 2 5.2
Samples
Order Code Data­sheet Downloads Product seriesApplicationPCB/Cable/PanelModularityWire SectionλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
L
(µH)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
MountPinsRowsGenderTypeIR
(A)
Packaging Samples