PMIC - Thermal Management

Image Part Number Description / PDF Quantity Rfq
ADT7460ARQZ-REEL7

ADT7460ARQZ-REEL7

Sanyo Semiconductor/ON Semiconductor

IC CTRLR TEMP MON/PWM FAN 16QSOP

0

ADM1030ARQZ-REEL7

ADM1030ARQZ-REEL7

Sanyo Semiconductor/ON Semiconductor

IC SNSR TEMP/FAN PWM CTRL 16QSOP

0

ADT7485AARMZ-R7

ADT7485AARMZ-R7

Sanyo Semiconductor/ON Semiconductor

IC TEMP/VOLT DGL SENS SST 10MSOP

0

ADM1033ARQZ-REEL

ADM1033ARQZ-REEL

Sanyo Semiconductor/ON Semiconductor

IC THERM/FAN SPEED CTRLR 16-QSOP

0

EMC6D102-CZC-TR

EMC6D102-CZC-TR

Roving Networks / Microchip Technology

IC FAN CTRLR 24QSOP

0

SE98PW,118

SE98PW,118

NXP Semiconductors

IC TEMP SENSOR I2C 8TSSOP

0

ADT7476ARQZ

ADT7476ARQZ

Sanyo Semiconductor/ON Semiconductor

IC REMOTE THERMAL CTLR 24QSOP

0

ADT7467ARQZ-R7

ADT7467ARQZ-R7

Sanyo Semiconductor/ON Semiconductor

IC REMOTE THERMAL CTLR 16QSOP

0

LTC2986ILX

LTC2986ILX

Analog Devices, Inc.

IC PWR SUPPLY MGR

0

W83781G

W83781G

Nuvoton Technology Corporation America

IC MONITOR H/W 48-LQFP

0

W83783G

W83783G

Nuvoton Technology Corporation America

IC MONITOR H/W 24-SOIC

0

LTC2984CLX

LTC2984CLX

Analog Devices, Inc.

IC PWR SUPPLY MGR

0

W83L786G

W83L786G

Nuvoton Technology Corporation America

IC H/W MONITOR 28-SSOP

0

MCP9805T-BE/MNY

MCP9805T-BE/MNY

Roving Networks / Microchip Technology

IC TEMP SENSOR 2WIRE 8-TDFN

0

MCP98243T-BE/MCAB

MCP98243T-BE/MCAB

Roving Networks / Microchip Technology

IC TEMP SENSOR 2WIRE 3V 8-DFN

0

ADM1033ARQZ

ADM1033ARQZ

Sanyo Semiconductor/ON Semiconductor

IC THERM/FAN SPEED CTRLR 16-QSOP

0

W83L761G

W83L761G

Nuvoton Technology Corporation America

IC MONITOR H/W SOT-23-5

0

ADT7476ARQZ-R7

ADT7476ARQZ-R7

Sanyo Semiconductor/ON Semiconductor

IC REMOTE THERMAL CTLR 24-QSOP

0

MCP98242T-BE/MNYBAA

MCP98242T-BE/MNYBAA

Roving Networks / Microchip Technology

IC TEMP SENSOR 2WIRE 8-TDFN

0

LM81CIMTX-3

LM81CIMTX-3

Texas Instruments

IC MPU SYSTEM HDWR MON 24-TSSOP

0

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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