PMIC - Thermal Management

Image Part Number Description / PDF Quantity Rfq
ADM1034ARQ-REEL7

ADM1034ARQ-REEL7

Analog Devices, Inc.

THERMAL MONITOR AND FAN SPEED (R

2000

MCP9805-BE/ST

MCP9805-BE/ST

Roving Networks / Microchip Technology

IC SENSOR THERMAL 3.0V 8TSSOP

667

LTC2995CUD#PBF

LTC2995CUD#PBF

Analog Devices, Inc.

IC TEMP SENSOR VOLT MNTR 20QFN

87

LM81CIMT-3/NOPB

LM81CIMT-3/NOPB

Texas Instruments

IC MONITOR SYS HARDWAR 24-TSSOP

649943

MAX6643LBFAEE+T

MAX6643LBFAEE+T

Maxim Integrated

IC CTLR PWM FAN-SPEED 16QSOP

0

LM96063CISD/NOPB

LM96063CISD/NOPB

Texas Instruments

IC DIODE/DGTL TEMP SENSOR 10WSON

248910000

MCP9843T-BE/MC

MCP9843T-BE/MC

Roving Networks / Microchip Technology

IC TEMP SENSOR DGTL 8-DFN

3607

NCT7491MNTXG

NCT7491MNTXG

Sanyo Semiconductor/ON Semiconductor

IC REMOTE THERMAL MONITOR 24QFN

0

ADT7488AARMZ-RL7

ADT7488AARMZ-RL7

Analog Devices, Inc.

TEMP. SENSOR WITH SST INTERFACE

10950

MAX6616AEG+

MAX6616AEG+

Analog Devices, Inc.

DUAL-CHANNEL TEMPERATURE MONITOR

4623

MCP98243-BE/ST

MCP98243-BE/ST

Roving Networks / Microchip Technology

IC TEMP SENSOR 3V 2WIRE 8-TSSOP

455

MAX6641AUB94+

MAX6641AUB94+

Maxim Integrated

IC TEMP MONITOR SMBUS 10UMAX

3711000

LM81CIMTX-3/NOPB

LM81CIMTX-3/NOPB

Texas Instruments

IC MPU SYSTEM HDWR MON 24-TSSOP

1162310000

EMC6W201-EZ-TR

EMC6W201-EZ-TR

Fluke Electronics

TEMPERATURE MONITOR FOR PROCESSO

8200

MAX6652AUB+

MAX6652AUB+

Maxim Integrated

IC TEMP SENS/MON 10-UMAX

681

TMP513AIDR

TMP513AIDR

Texas Instruments

IC TEMP SNSR TRIPL REMOTE 16SOIC

9242500

ADM1026JSTZ-R7

ADM1026JSTZ-R7

POWER SUPPLY CIRCUIT, FIXED

1407

ADM1031ARQ-REEL7

ADM1031ARQ-REEL7

Analog Devices, Inc.

TEMP MONITOR AND FAN CONTROL

16735

ADM1023ARQ-REEL

ADM1023ARQ-REEL

Analog Devices, Inc.

ACPI-COMPLIANT, HIGH ACCURACY MI

114350

LM80CIMTX-3/NOPB

LM80CIMTX-3/NOPB

Texas Instruments

IC MPU SYSTEM HDWR MON 24-TSSOP

10000

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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