Wireless battery pack chargers

Isolated AC/DC power supply

An isolated AC/DC power stage converts AC voltage into isolated regulated DC voltage. Efficiency is a key parameter for this stage as it contains protection mechanisms for over current and over temperature.

Products

Shunt voltage references

TLV431B—0.5% accuracy, low-voltage, adjustable precision shunt regulator

TL431—Adjustable precision shunt regulator

LMV431—1.5%, low-voltage (1.24-V) adjustable precision shunt regulator

Low-side drivers

UCC27525—5-A/5-A dual-channel gate driver with 5-V UVLO, enable, and inverting/non-inverting inputs

UCC27531—2.5-A/5-A single-channel gate driver with 8-V UVLO, 35-V VDD, and split outputs

UCC27324—Non-inverting 4-A/4-A dual-channel low side gate driver

Half-bridge drivers

LM5101B—2-A, 100-V half bridge gate driver with 8-V UVLO and TTL inputs

UCC27714—4-A, 600-V half bridge gate driver

SR & load share controllers

UCC24612—High-frequency multi-mode synchronous rectifier controller

UCC24610—Secondary side synchronous rectifier controller

UCC24630—Synchronous rectifier controller With Ultra Low Standby current

UCC24636—Synchronous rectifier controller With Ultra-Low Standby current

LLC controllers

UCC25600—8-pin high-performance resonant mode LLC controller

PWM controllers

UCC28950—Green phase-shifted full-bridge controller with Synchronous Rectification control

N-channel MOSFETs

CSD18514Q5A—40-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 4.9 mOhm

CSD19531Q5A—100-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 6.4 mOhm

CSD19501KCS—80-V, N channel NexFET™ power MOSFET, single TO-220, 6.6 mOhm

CSD19534Q5A—100-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 15.1 mOhm

CSD17573Q5B—30-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 1.45 mOhm

Flyback controllers

UCC28740—Constant-Voltage, Constant-Current (CVCC) Flyback controller with Secondary Side Regulation (SSR)

Power stage

The power stage consists of half bridge or full bridge inverter driving the primary tank (LC) circuit of a wireless power transmitter. This stage operates to generate trapezoidal waveform at 50% duty cycle. This stage usually operates at a constant frequency, which is determined by the resonant frequency of the LC parallel resonant circuit.

Products

Low-side drivers

UCC27525—5-A/5-A dual-channel gate driver with 5-V UVLO, enable, and inverting/non-inverting inputs

UCC27531—2.5-A/5-A single-channel gate driver with 8-V UVLO, 35-V VDD, and split outputs

UCC27324—Non-inverting 4-A/4-A dual-channel low side gate driver

Half-bridge drivers

LM5101B—2-A, 100-V half bridge gate driver with 8-V UVLO and TTL inputs

UCC27714—4-A, 600-V half bridge gate driver

Battery charger ICs

BQ21061—500-mA 1-cell linear charger with 10-nA ship mode, power-path, regulated system voltage and LDO

N-channel MOSFETs

CSD18514Q5A—40-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 4.9 mOhm

CSD19531Q5A—100-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 6.4 mOhm

CSD19501KCS—80-V, N channel NexFET™ power MOSFET, single TO-220, 6.6 mOhm

CSD19534Q5A—100-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 15.1 mOhm

CSD17573Q5B—30-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 1.45 mOhm

Signal conditioning

This stage consists of opamps, comparators and references for amplification, comparison and fault detection of sensed voltage, current and temperature signals in the system. This stage can contain ADCs when a low end micro-controller is used in the system.

Products

Precision op amps (Vos<1mV)

OPA2320—Dual, precision, zero-crossover, 20-MHz, 0.9-pA Ib, RRIO, CMOS operational amplifier

OPA180—0.1-μV/°C Drift, Low-Noise, Rail-to-Rail Output, 36-V, Zero-Drift Operational Amplifier

OPA2188—0.03µV/°C, 6µV Vos, Low Noise, Rail-to-Rail Output, 36V Zero-Drift Operational Amplifier

LMP2011—Single, High Precision, Rail-to-Rail Output Operational Amplifier

Analog current-sense amplifiers

INA199—26V, bi-directional current sense amplifier

INA240—-4 to 80V, bidirectional, ultra-precise current sense amplifier with enhanced PWM rejection

INA181—26-V bi-directional 350-kHz current-sense amplifier

General-purpose op amps

LMV358A—Dual, 5.5-V, 1-MHz, 4-mV offset voltage, RRO operational amplifier

OPA991—Single, 40-V 4.5-MHz low-power operational amplifier

LMV324A—Quad, 5.5-V, 1-MHz, 4-mV offset voltage, RRO operational amplifier

LM358B—Dual, 36-V, 1.2-MHz, 3-mV offset voltage operational amplifier with -40°C to 85°C operation

TLV9001—One-channel, 1-MHz rail-to-rail input and output 1.8-V to 5.5-V operational amplifier

Comparators

LM393B—Dual commercial grade standard comparator

LM393A—Precision dual differential comparator, industrial grade

Shunt voltage references

TLV431B—0.5% accuracy, low-voltage, adjustable precision shunt regulator

TL431—Adjustable precision shunt regulator

LMV431—1.5%, low-voltage (1.24-V) adjustable precision shunt regulator

Precision ADCs

ADS1220—24-bit, 2-kSPS, four-channel, low-power, delta-sigma ADC with PGA, VREF, SPI and two IDACs

ADS1278—24-Bit, 144kSPS, 8-Ch Simultaneous-Sampling Delta-Sigma ADC for Wide Bandwidth Applications

ADS8885—18-Bit, 400-kSPS, 1-Ch SAR ADC with True-Differential Input, SPI Interface and Daisy-Chain

Temperature switches

TMP302—Pin-Selectable Trip Point 1.4V-Capable Family of Temperature Switches

Analog temperature sensors

LMT88—±4°C analog output temperature sensor with -11.77-mV/°C gain

Demodulator

This is a communication demodulation circuit. The input of the circuit is coil voltage with communication signals, and the output is communication data following a bit encoding scheme. Qi-compliant wireless devices use amplitude-shift keying (ASK) modulation to communicate.

Products

General-purpose op amps

LMV358A—Dual, 5.5-V, 1-MHz, 4-mV offset voltage, RRO operational amplifier

OPA991—Single, 40-V 4.5-MHz low-power operational amplifier

LMV324A—Quad, 5.5-V, 1-MHz, 4-mV offset voltage, RRO operational amplifier

Comparators

LM393B—Dual commercial grade standard comparator

LM393A—Precision dual differential comparator, industrial grade

Precision op amps (Vos<1mV)

OPA2320—Dual, precision, zero-crossover, 20-MHz, 0.9-pA Ib, RRIO, CMOS operational amplifier

OPA180—0.1-μV/°C Drift, Low-Noise, Rail-to-Rail Output, 36-V, Zero-Drift Operational Amplifier

OPA2188—0.03µV/°C, 6µV Vos, Low Noise, Rail-to-Rail Output, 36V Zero-Drift Operational Amplifier

LMP2011—Single, High Precision, Rail-to-Rail Output Operational Amplifier

Auxiliary power supply

Auxiliary power supply generally consists of a low voltage DC/DC converter for developing multiple non-isolated rails used to power various subsystems in the end equipment such as digital processor, gate drivers, and sensing circuits. There are multiple optional stages where the output from the main DC/DC converter can be fed to further low voltage DC/DC converters or LDOs. A typical aspect of the auxiliary power supply is its low standby power which is important in improving overall system efficiency.

Products

Buck converters (integrated switch)

TPS560430—SIMPLE SWITCHER® 36-V, 600-mA Buck Regulator With High-Efficiency Sleep Mode

LMR36502—3-V to 65-V, 150-mA ultra-small synchronous buck converter with 6 μA IQ

TPS62A02—2.5-V to 5.5-V input, 2-A high-efficiency step-down converter in SOT563 and SOT23 package

LM76003-Q1—3.5V to 60V 3.5A/2.5A Synchronous Voltage Regulator

Buck modules (integrated inductor)

TPSM82810—2.75-V to 6-V, 4-A step-down module with adjustable-frequency & tracking in 3 x 4-mm μSIP package

Linear & low-dropout (LDO) regulators

TPS7A83A—2-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout voltage regulator with power good

TLV709—150-mA 30-V low-dropout (LDO) linear regulator with 3.2-μA supply current

TLV761—1-A 16-V high-PSRR linear voltage regulator

TPS782—150-mA, nano-IQ, low-dropout voltage regulator with enable from -40°C to +125°C

Shunt voltage references

TLV431B—0.5% accuracy, low-voltage, adjustable precision shunt regulator

TL431—Adjustable precision shunt regulator

LMV431—1.5%, low-voltage (1.24-V) adjustable precision shunt regulator

LMV431B—0.5%, low-voltage (1.24-V) adjustable precision shunt regulator

Boost converters (integrated switch)

TPS61087—18.5-V, 3.2-A, 650-kHz / 1.2-MHz step-up DC/DC converter

TPS61222—0.7-VIN, 5-V fixed output voltage boost converter with 5.5-μA quiescent current

SR & load share controllers

UCC24612—High-frequency multi-mode synchronous rectifier controller

UCC24610—Secondary side synchronous rectifier controller

UCC24630—Synchronous rectifier controller With Ultra Low Standby current

UCC24636—Synchronous rectifier controller With Ultra-Low Standby current

Boost controllers (external switch)

LM5020—13-100V Wide Vin, Current Mode PWM Boost, Flyback, Sepic Controller

Digital processing

The digital processing unit mainly consists of microcontrollers and DSPs as central control unit(s), used for different power stage controls, communication interfaces, and displays. These take current and voltage feedback from various units to ensure that the overall systems functions correctly.

Products

Arm Cortex-M0+ MCUs

MSPM0L1105—32-MHz Arm® Cortex®-M0+ MCU with 32-KB flash, 4-KB SRAM, 12-bit ADC

MSPM0G1105—80MHz Arm M0+ MCU, 32KB Flash, 16KB SRAM, 2×12bit 4Msps ADC, op-amp

C2000 real-time microcontrollers

TMS320F2800137—C2000™ 32-bit MCU with 120 MHz, 256-KB flash, FPU and TMU

TMS320F28031-Q1—Automotive C2000™ 32-bit MCU with 60 MHz, 64 KB flash, 2 MSPS ADC

TMS320F28035-Q1—Automotive C2000™ 32-bit MCU with 60 MHz, 128 KB flash, CLA

TMS320F28031—C2000™ 32-bit MCU with 60 MHz, 64 KB flash, 2 MSPS ADC

MSP430 microcontrollers

MSP430F5529—25 MHz MCU with 128KB Flash, 8KB SRAM, 12-bit ADC, comparator, DMA, UART/SPI/I2C, USB, HW multiplier

MSP430FR2532—Capacitive Touch MCU with 8 touch IO (8 sensors), 8KB FRAM, 1KB SRAM, 15 IO, 10-bit ADC

MSP430FR2533—Capacitive Touch MCU with 16 touch IO (24 sensors), 16KB FRAM, 2KB SRAM, 19 IO, 10-bit ADC

Direction-controlled voltage translators

SN74LVC1T45-Q1—Automotive Single-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation

Noninverting buffers & drivers

SN74LVC2G17—2-ch, 1.65-V to 5.5-V buffers with Schmitt-Trigger inputs

SN74LVC827A—10-ch, 1.65-V to 3.6-V buffers with 3-state outputs

Inverting buffers & drivers

SN74LVC2G14—2-ch, 1.65-V to 5.5-V inverters with Schmitt-Trigger inputs

Shift registers

SN74LV165A—Parallel-load eight-bit shift registers

SN74LV595A—Eight-bit shift registers with 3-state output registers

D-type latches

SN74ACT573—Octal D-type transparent latches with three-state outputs

AND gates

SN74LV08A—4-ch, 2-input 2-V to 5.5-V high-speed (7 ns) AND gate

Power factor correction (PFC) controllers

UCC28051—Transition mode PFC controller with 12.5V/9.7V UVLO and IEC61000-3-2 compliance, -40°C to 105

Supervisor & reset ICs

TPS3422—Single-channel push-button controller with configurable delay & reset pulse

Wireless interface

This stage communicates wirelessly to and from the charging IC to transfer charging information such as operating modes that implement charging power transmission and charging power reception along with associated control functionality. This is commonly implemented using BLE and NFC.

Products

Other wireless products

TRF7970A—Multi-Protocol Fully Integrated 13.56-MHz NFC / RFID Transceiver IC

TRF7964A—TRF7964A Multi Protocol Fully Integrated 13.56-MHz NFC / RFID Reader/Writer IC

RF430CL330H—Dynamic Dual Interface NFC Transponder

Low-power 2.4-GHz products

CC2640—SimpleLink™ 32-bit Arm Cortex-M3 Bluetooth® Low Energy wireless MCU with 128kB Flash