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TIDEP0024 Reference Design

Texas Instruments

AM437x Low Power Suspend Mode with LPDDR2

Description

This low power mode implementation realizes processor power consumption less than 0.1 mW while keeping LPDDR2 memory in self refresh consuming ~ 1.6 mW. The system solution is comprised of AM437x Sitara processor: LPDDR2 memory and TPS65218 power management IC and optimized for new low power mode along with support for legacy low power modes. The processor power is minimized by turning off all the processor power supplies except RTC power supply. System power state transitions including power supply control can be performed by single interface signal (PMIC_PWR_EN signal) with PMIC register programming.

Features
  • Suspend to RAM with the lowest system power modeAM437x in RTC-only modeTPS65218 in suspend stateLPDDR2 in self refreshSystem can resume back to the state it was before suspendingRTC-only suspend power consumptionAM43x + TPS65218: Typical 2Gb LPDDR2: 1.6 mWSuspend Events by:By programming RTC registersBy setting up the RTC alarmResume Events:RTC alarm goes offPMIC push button or AC power detectionResume TimeThis design is tested and includes schematics: BOM: and design guide.
Applications
  • Video recorder
  • HVAC gateway
  • Thermostat
  • HVAC controller
  • Fire alarm control panel (FACP)
  • Railway information
  • Occupancy detection (people tracking
  • people counting)
  • Elevator main control panel
  • Building security gateway
  • Eye
  • ear
  • nose & throat exam
  • Drone payload control
  • Analog security camera
  • IP network camera
  • Wireless security camera
Product Categories

End Equipment Reference Diagrams

Application Area End Equipment
Video recorder https://www.ti.com/solution/video-recorder#referencedesigns
HVAC gateway https://www.ti.com/solution/hvac-gateway#referencedesigns
Thermostat https://www.ti.com/solution/thermostat#referencedesigns
HVAC controller https://www.ti.com/solution/hvac-controller#referencedesigns
Fire alarm control panel (FACP) https://www.ti.com/solution/fire-alarm-control-panel-facp#referencedesigns
Railway information https://www.ti.com/solution/railway-information-systems#referencedesigns
Occupancy detection (people tracking https://www.ti.com/solution/occupancy-detection-people-tracking-people-counting#referencedesigns
people counting) https://www.ti.com/solution/elevator-main-control-panel#referencedesigns
Elevator main control panel https://www.ti.com/solution/building-security-gateway#referencedesigns
Building security gateway https://www.ti.com/solution/eye-ear-nose-throat-exam#referencedesigns
Eye https://www.ti.com/solution/drone-payload-control#referencedesigns
ear https://www.ti.com/solution/analog-security-camera#referencedesigns
nose & throat exam https://www.ti.com/solution/ip-network-camera#referencedesigns
Drone payload control https://www.ti.com/solution/wireless-security-camera#referencedesigns

Parts

Part Number Name Companion Part
SN74LVC1G07 SN74LVC1G07 Buy Datasheet
TPD1E10B06 TPD1E10B06 Buy Datasheet
TPS63010 TPS63010 Buy Datasheet

Bill Of Materials

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Schematic

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Design File

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Test Data

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Other Documents

Title Updated Type Size (KB)
AM437x Low Power Suspend Mode with LPDDR2 CAD Files 03 Oct 2014 ZIP 211
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AM437x Low Power Suspend Mode with LPDDR2 Bill of Materials (BOM) 03 Oct 2014 PDF 103
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AM437x Low Power Suspend Mode with LPDDR2 Schematic 03 Oct 2014 PDF 68
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Additional details