Non-isolated DC/DC power supply
The system can be powered from an existing wired source. A buck converter can be used if the system is powered by a 24V DC source. A load switch can be an option for designs that need additional power savings by powering off the people counting circuit when not in use.
Products
Buck converters (integrated switch)
TPS62826—2.4-V-5.5-V input, 3-A step-down converter with 1% accuracy in 1.5-mm x 1.5-mm VSON-HR package
TPS628502-Q1—2.7-V to 6-V, 2-A automotive step-down converter in SOT583 package
LMR43620-Q1—Automotive, 3-V to 36-V, 2-A low-EMI synchronous buck regulator with low IQ
LM5164—6-V to 100-V input, 1-A synchronous buck DC-DC converter with ultra-low IQ
TPS560430—SIMPLE SWITCHER® 36-V, 600-mA Buck Regulator With High-Efficiency Sleep Mode
LMQ66430-Q1—Automotive 36-V, 3-A low EMI synchronous step-down converter with 1.5-µA IQ
Boost converters (integrated switch)
TPS61299—95-nA low IQ 5.5-V boost converter with input current limit and fast transient performance
TPS610981—Low input voltage, 3.3-V output voltage, synchronous boost converter with integrated LDO
Linear & low-dropout (LDO) regulators
TLV767-Q1—Automotive adjustable- and fixed-output, 1-A, 16-V, positive-voltage low-dropout linear regulator
TPS7A20—300-mA ultra-low-noise low-IQ low-dropout (LDO) linear regulator with high PSRR
TPS7A52-Q1—Automotive 2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator
TPS7A8101-Q1—Automotive 1-A, high-PSRR, adjustable low-dropout voltage regulator with enable
TPS7A05—200mA, ultra-low-IQ, high-accuracy, low-dropout voltage regulator with enable
TPS796—1-A, low-dropout voltage regulator with enable
Multi-channel ICs (PMICs)
LP87524B-Q1—Multiphase 4MHz, 4A/1.8V + 2.5A/2.3V + 1.5A/3.3V + 1.5A/1.2V buck converters for AWR and IWR MMICs
TPS65216—Integrated power management (PMIC) for ARM® Cortex™-A8/A9 SOCs and FPGAs
TPS51200—3A Sink/Source DDR Termination Regulator w/ VTTREF Buffered Reference for DDR2, DDR3, DDR3L and DDR4
TPS659037—Power Management IC (PMIC) for ARM Cortex A15 Processors
eFuses & hot swap controllers
TPS2662—4.5-V to 60-V, 478mΩ, 0.025-0.88A eFuse with integrated input and output reverse polarity protection
Load switches
TPS22916—5.5-V, 2-A, 60-mΩ, 10-nA leakage load switch with output discharge
TPS22965—5.7-V, 6-A, 16-mΩ load switch with adj. rise time and optional output discharge
TPS22918—5.5-V, 2-A, 52-mΩ load switch with adj. rise time and adj. output discharge
Buck-boost, inverting & split-rail converters (integrated switch)
TPS63010—High Efficient Single Inductor Buck-Boost Converter with 2-A Switches
N-channel MOSFETs
CSD17579Q5A—30-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 13.3 mOhm
CSD18511Q5A—40-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 2.3 mOhm
CSD18533Q5A—60-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 5.9 mOhm
Analog switches & muxes
TS5A23157—5-V, 2:1 (SPDT), 2-channel analog switch
Power over Ethernet
A power-over-Ethernet solution allows the system to derive power from an existing Ethernet connection.
Products
Powered devices
TPS23751—IEEE 802.3at PoE interface with flyback DC-DC controller
TPS23750—Class 3 PoE PD with flyback DC-DC controller
TPS23753A—IEEE 802.3-2005 PoE interface and Isolated Converter controller with Enhanced ESD Ride-Through
TPS23785B—High-Power, High-Efficiency PoE PD and DC-to-DC Controller
TPS23730—IEEE 802.3bt type-3 class 1-6 PoE 2 PD with high efficiency DC-DC controller
Shunt voltage references
TLV431A—1% accuracy, low-voltage, adjustable precision shunt regulator
TLV431—1.5% accuracy, low-voltage, adjustable precision shunt regulator
TL431—Adjustable precision shunt regulator
TLVH431A—1% low-voltage wide-operating current adjustable precision shunt regulator
LM4040—Fixed voltage, 45-µA, precision micropower shunt voltage reference
LM4040-N-Q1—Automotive, 100-ppm/°C precision micropower shunt voltage reference
People counting analog front end
The people counting algorithm is generally carried out by a dedicated analog front-end. A 3D time-of-flight (TOF) analog front-end can create a 3D depth map of a subject or scene by illuminating an area with modulated IR light and measuring the distance for every pixel in the sensor?s field of view. A mmWave sensor operates as an RF-based radar to give range, velocity, and angle information of objects in a scene. Programmable digital processing elements are included in the sensor that enable algorithms to count and track the path of multiple people.
Products
Industrial mmWave radar sensors
IWRL6432—Single-chip low-power 57-GHz to 64-GHz industrial mmWave radar sensor
IWR6843AOP—Single-chip 60-GHz to 64-GHz intelligent mmWave sensor with integrated antenna on package (AoP)
IWR6843—Single-chip 60-GHz to 64-GHz intelligent mmWave sensor integrating processing capability
Proximity sensors
OPT8241—QVGA-Resolution 3D Time-of-Flight (ToF) Sensor
OPT9221—Time-of-Flight (ToF) Controller for OPT8241
OPT3101—ToF-based long-range proximity and distance sensor analog front end (AFE)
Digital temperature sensors
TMP1075—1°C I²C temperature sensor with performance upgrades to industry standard LM75 / TMP75
TMP112—±0.5°C 1.4V to 3.6V digital temperature sensor with I²C and SMBus
TMP102—2C digital temperature sensor, I2C/SMBus in 2.56mm2 package
Digital processing
A microprocessor (or microcontroller) monitors all the sensor outputs and controls other parts of the system.
Products
MSP430 microcontrollers
MSP430FR5964—16 MHz MCU with 256KB FRAM, 8KB SRAM, AES, 12-bit ADC , comparator, DMA, UART/SPI/I2C, timer
MSP430F2274—16 MHz MCU with 32KB Flash, 1KB SRAM, 10-bit ADC, 2 OpAmp, I2C/SPI/UART
MSP430FR2433—16 MHz MCU with 16KB FRAM, 4KB SRAM, 10-bit ADC, UART/SPI/I2C, timer
C2000 real-time microcontrollers
TMS320F28027F—C2000™ 32-bit MCU with 60 MHz, 64 KB flash, InstaSPIN-FOC
TMS320F28027F-Q1—Automotive C2000™ 32-bit MCU with 60 MHz, 64 KB flash, InstaSPIN-FOC
Wi-Fi products
WL1801MOD—WiLink™ 8 single band Wi-Fi® module
WL1835MOD—WiLink™ 8 single band combo 2x2 MIMO Wi-Fi®, Bluetooth® & Bluetooth Smart module
WL1805MOD—WiLink™ 8 single band, 2x2 MIMO Wi-Fi® module
CC3200—SimpleLink™ 32-bit Arm Cortex-M4 Wi-Fi® wireless MCU with 2 TLS/SSL and 256kB RAM
CC3100—SimpleLink™ 32-bit Arm Cortex-M3 Wi-Fi® wireless network processor
Wired interface
An Ethernet interface allows the system to communicate to a central location. An Ethernet PHY allows the system microprocessor to connect to the local area network.
Products
Ethernet PHYs
DP83825I—Smallest form factor (3-mm by 3-mm), low-power 10/100-Mbps Ethernet PHY transceiver with 50-MHz c
DP83822I—Low-power, robust 10/100-Mbps Ethernet PHY transceiver with 16-kV ESD
RS-485 & RS-422 transceivers
THVD1410—3.3-V to 5-V RS-485 transceiver with ±18-kV IEC ESD protection
RS-232 transceivers
MAX3232E-Q1—Automotive 3- to 5.5-V 250kbps RS-232 line driver/receiver with +/-15-kV IEC-ESD protection
MAX3221E—3- to 5.5-V single channel 250kbps RS-232 line driver/receiver with +/-15-kV IEC-ESD protection
USB hubs & controllers
TUSB8041—4-port 5-Gbps SuperSpeed USB 3.0 hub
Signal input/output protection
ESD protection may be required for user buttons and other interfaces.
Products
ESD protection diodes
TPD2E001—Dual 1.5-pF, 5.5-V, ±8-kV ESD protection diode with 1-nA max leakage & VCC pin for USB 2.0
TPD4S012—Quad 0.8-pF, 5.5-V, ±10-kV ESD protection diode with 15-V tolerant Vbus for USB Interface<
TPD4E004—Quad 1.6-pF, 5.5-V, ±8-kV ESD protection diode with VCC pin for High Speed Interfaces
TPD2E007—Dual 10-pF, ±13-V, ±8-kV ESD protection diode for AC Signal Data Interfaces
TPD2EUSB30A—Dual 0.7-pF, 3.6-V, ±8-kV ESD protection diode with 5-A surge rating for USB 3.0
TPD1E10B06—12-pF, ±5.5V, ±30-kV ESD protection diode in 0402 and SOD-523 package
Wireless interface
Adding a wireless interface to the design allows people counting information to be transmitted to a central location. A network processor can add wireless connectivity such as Wi-Fi to the system.
Products
MSP430 microcontrollers
MSP430FR5964—16 MHz MCU with 256KB FRAM, 8KB SRAM, AES, 12-bit ADC , comparator, DMA, UART/SPI/I2C, timer
MSP430F2274—16 MHz MCU with 32KB Flash, 1KB SRAM, 10-bit ADC, 2 OpAmp, I2C/SPI/UART
MSP430FR2433—16 MHz MCU with 16KB FRAM, 4KB SRAM, 10-bit ADC, UART/SPI/I2C, timer
Wi-Fi products
WL1801MOD—WiLink™ 8 single band Wi-Fi® module
WL1835MOD—WiLink™ 8 single band combo 2x2 MIMO Wi-Fi®, Bluetooth® & Bluetooth Smart module
WL1831MOD—WiLink™ 8 industrial Wi-Fi, Bluetooth & Bluetooth Smart (Low energy) module
WL1805MOD—WiLink™ 8 single band, 2x2 MIMO Wi-Fi® module
Output user interface
One or multiple LEDs can be used to communicate status and other system information. An LED driver can be used to generate simple LED notifications or more complex patterns.
Products
RGB LED drivers
TLC59116—16-bit Fast-Mode Plus (FM+) I2C-Bus constant-current LED sink driver
TLC59283—16 channel constant current LED driver with pre-charge FET
Input user interface
External buttons allow the user to control and reset the system. A push-button controller can be used to require a long button hold for resetting the system.
Products
Supervisor & reset ICs
TPS3897—Single-channel, ultra-small, adjustable supervisor with active-high, open-drain output
TLV803E—Low-power voltage supervisor (reset IC) with active-low open-drain output
TPS3820-Q1—Active-low, push-pull, automotive voltage supervisor (reset IC) with 0.2-s watchdog & manual reset
TLV803—3-pin voltage supervisor (reset IC) with active-low & open-drain reset
TPS3828-Q1—Automotive voltage monitor with watchdog timer
TPS3808E—Low-quiescent current supervisor with programmable delay and manual reset
Button signal input/output protection
ESD protection may be required for user buttons and other interfaces.
Products
ESD protection diodes
TPD2E001—Dual 1.5-pF, 5.5-V, ±8-kV ESD protection diode with 1-nA max leakage & VCC pin for USB 2.0
TPD4S012—Quad 0.8-pF, 5.5-V, ±10-kV ESD protection diode with 15-V tolerant Vbus for USB Interface<
TPD4E004—Quad 1.6-pF, 5.5-V, ±8-kV ESD protection diode with VCC pin for High Speed Interfaces
TPD2E007—Dual 10-pF, ±13-V, ±8-kV ESD protection diode for AC Signal Data Interfaces
TPD2EUSB30A—Dual 0.7-pF, 3.6-V, ±8-kV ESD protection diode with 5-A surge rating for USB 3.0
TPD1E10B06—12-pF, ±5.5V, ±30-kV ESD protection diode in 0402 and SOD-523 package
Motion detection
A motion detection sensor triggers the people counting analog front-end. The analog front-end is kept in a low power mode while there is no motion for added power savings. Multiple operational amplifiers can be used to filter and amplify the output of the PIR sensor. A comparator or ADC can be used to maximize power savings by keeping the system in a low-power mode until a motion interrupt is generated.
Products
Precision ADCs
ADS1114—16-Bit 860SPS 1-Ch Delta-Sigma ADC With PGA, Oscillator, Vref, Comparator, and I2C
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