PMIC - Thermal Management

Image Part Number Description / PDF Quantity Rfq
ADT7476AARQZ-R

ADT7476AARQZ-R

Sanyo Semiconductor/ON Semiconductor

IC REMOTE THERMAL CTLR 24QSOP

1854

W83L771AWG TR

W83L771AWG TR

Nuvoton Technology Corporation America

IC H/W MONITOR 8MSOP

0

MAX31629MTA+T

MAX31629MTA+T

Maxim Integrated

IC I2C THERMOMETER RTC TDFN

0

MCP98243T-BE/MC

MCP98243T-BE/MC

Roving Networks / Microchip Technology

IC TEMP SENSOR 2WIRE 3V 8-DFN

4780

LM63CIMA/NOPB

LM63CIMA/NOPB

Texas Instruments

IC TEMP SENSR REMOTE DIODE 8SOIC

2879975

ADM1030ARQ

ADM1030ARQ

Analog Devices, Inc.

TEMP MONITOR AND FAN CONTROL

6665

TMP513AIRSAT

TMP513AIRSAT

Texas Instruments

IC TEMP SNSR TRIPL REMOTE 16QFN

6932000

LM81BIMT-3

LM81BIMT-3

ANALOG CIRCUIT, 1 FUNC, PDSO24

3409

ADM1030ARQZ

ADM1030ARQZ

SERIAL SWITCH/DIGITAL SENSOR

0

AD594CDZ

AD594CDZ

Analog Devices, Inc.

IC THERMOCOUPLE INSTR AMP 14CDIP

11

MAX6684ESA+T

MAX6684ESA+T

Maxim Integrated

IC DETECTOR FAN FAIL 8-SOIC

1173

MAX6644LBAAEE+T

MAX6644LBAAEE+T

Maxim Integrated

IC CNTRLR FAN SPEED 16-QSOP

0

ADT7476AARQZ-R/BKN

ADT7476AARQZ-R/BKN

T VER OF THE ADT7476

1176

NCT7904D

NCT7904D

Nuvoton Technology Corporation America

IC H/W MONITOR

0

MCP9844T-BE/MNYAB

MCP9844T-BE/MNYAB

Roving Networks / Microchip Technology

IC DIMM TEMP SENSOR 8TDFN

0

MAX6639ATE+

MAX6639ATE+

Maxim Integrated

IC TEMP MONITOR 2CH 16-TQFN

217180

TMP512AID

TMP512AID

Texas Instruments

TEMPERATURE AND POWER SUPPLY SYS

23220

ADT7518ARQ-REEL

ADT7518ARQ-REEL

Analog Devices, Inc.

SERIAL TEMPERATURE SENSOR

5000

ADT7468ARQZ-RL7

ADT7468ARQZ-RL7

Analog Devices, Inc.

CPU THERMAL AND VOLTAGE MONITOR

6265

LM87CIMTX/NOPB

LM87CIMTX/NOPB

Texas Instruments

IC MONITOR SYS HARDWARE 24TSSOP

238210000

PMIC - Thermal Management

1. Overview

Power Management ICs (PMICs) with Thermal Management are integrated circuits responsible for regulating power distribution and monitoring thermal conditions in electronic systems. These devices prevent overheating through active temperature sensing, dynamic power adjustment, and thermal protection mechanisms. Their importance grows with increasing power density in modern electronics like smartphones, servers, and automotive systems, ensuring reliability and longevity.

2. Major Types & Functional Classification

TypeFunctional CharacteristicsApplication Examples
Temperature Monitoring PMICContinuous temperature sensing with alert thresholdsSmartphones, laptops
Thermal Protection PMICAutomatic shutdown during critical temperature eventsIndustrial motors, battery systems
Dynamic Thermal Regulation PMICAdjusts power delivery based on real-time thermal feedbackHigh-performance computing (HPC), 5G base stations
Multi-Zone Thermal Control PMICIndependent monitoring of multiple thermal zonesAutomotive ECUs, data center servers

3. Structure & Technical Composition

A typical PMIC thermal management system consists of: - **Temperature Sensors**: Built-in thermistors or diodes for precise thermal detection - **Analog-to-Digital Converters (ADC)**: Convert analog temperature signals to digital values - **Control Logic**: Implements thermal algorithms (e.g., PID controllers) - **Power Switching Elements**: MOSFETs for load control during thermal events - **Communication Interfaces**: I2C/SPI for system integration - **Protection Circuits**: Over-temperature shutdown (OTP) and hysteresis mechanisms

4. Key Technical Specifications

ParameterDescriptionImportance
Temperature Sensing Accuracy 1 C to 3 C tolerance rangeDetermines protection reliability
Thermal Protection ThresholdConfigurable via registers (e.g., 80 C-150 C)Prevents silicon degradation
Response Time10 s-1ms for critical shutdownMinimizes thermal damage risk
Operating Temperature Range-40 C to +125 C standardEnsures environmental stability
Power Consumption10 A-100mA active modeImpacts battery life in portable devices
Package TypeQFN, BGA, TSSOPAffects thermal dissipation capability

5. Application Fields

  • Consumer Electronics: Smartphones (thermal throttling), tablets, VR headsets
  • Industrial Equipment: PLCs, motor drives, factory automation systems
  • Automotive: Battery Management Systems (BMS), ADAS processors
  • Telecommunications: 5G base stations, optical transceivers
  • Computing: Laptops, servers, AI accelerators

6. Leading Manufacturers & Representative Products

ManufacturerProduct SeriesKey Features
Texas InstrumentsTPS65000 SeriesMulti-channel thermal regulation with 1 C accuracy
STMicroelectronicsSTMPS SeriesIntegrated ADC and I2C interface for thermal monitoring
NXP SemiconductorsPF5000 SeriesDigital temperature sensors with programmable thresholds
Infineon TechnologiesOPTIREG SeriesAutomotive-grade thermal protection up to 150 C
Analog DevicesADM1031 Hot Swap ControllerDual-zone temperature monitoring with fan control

7. Selection Guidelines

Key considerations when selecting PMIC thermal management solutions: - **Operating Environment**: Industrial vs. consumer temperature requirements - **Thermal Response Speed**: Critical for high-power systems (e.g., GPUs) - **Integration Level**: Combined voltage regulation + thermal management vs. discrete solutions - **Package Thermal Resistance**: Lower R JA improves heat dissipation - **System Compatibility**: Communication interface (I2C vs. PMBus) and voltage range - **Certifications**: Automotive (AEC-Q), Industrial (IEC 60750) standards compliance

8. Industry Trends

Future developments in PMIC thermal management include: - **Advanced Process Nodes**: 28nm/40nm technologies for lower quiescent current - **AI-Driven Thermal Prediction**: Machine learning algorithms for proactive cooling - **GaN/SiC Integration**: Wide-bandgap semiconductor compatibility for high-temperature operation - **Ultra-Small Packaging**: 0.4mm pitch WLCSP for wearable devices - **Standardization Efforts**: Emerging PMIC thermal interface standards (e.g., JEDEC JESD51)

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