PMIC - Thermal Management

Image Part Number Description / PDF Quantity Rfq
MCP9843T-BE/ST

MCP9843T-BE/ST

Roving Networks / Microchip Technology

IC TEMP SENSOR DGTL 8TSSOP

3039

LTC2984HLX#PBF

LTC2984HLX#PBF

Analog Devices, Inc.

MULTI SENSOR HIGH ACCURACY DIGIT

0

LTC2990CMS#PBF

LTC2990CMS#PBF

Analog Devices, Inc.

IC TEMP/VOLT/CUR MONITOR 10MSOP

348

ADM1028ARQ

ADM1028ARQ

Analog Devices, Inc.

REMOTE THERMAL DIODE MONITOR W/L

11817

MAX6615AEE+

MAX6615AEE+

Maxim Integrated

IC TEMP MONITOR DL-CH 16-QSOP

401400

MAX6643LBBAEE+

MAX6643LBBAEE+

Maxim Integrated

IC CNTRLR FAN SPEED 16-QSOP

4841100

LM96194CISQX/NOPB

LM96194CISQX/NOPB

Texas Instruments

IC TRUTHERM HDWR MONITOR 48WQFN

0

AMC80AIPW

AMC80AIPW

Texas Instruments

IC TEMP MON CTRL 2WIRE 24TSSOP

366420

AD594AD

AD594AD

Analog Devices, Inc.

AMPLIFIER, BIPOLAR

16622

ADT7462ACPZ-REEL

ADT7462ACPZ-REEL

Sanyo Semiconductor/ON Semiconductor

IC TEMP/VOLT MONITOR 32-LFCSP

9923

ADT7473ARQZ

ADT7473ARQZ

SERIAL SWITCH/DIGITAL SENSOR

81

EMC2101-ACZT-TR

EMC2101-ACZT-TR

Roving Networks / Microchip Technology

IC FAN CTRLR I2C/SMBUS 8SOIC

2881

AMC6821SDBQ

AMC6821SDBQ

Texas Instruments

IC TEMP MONTR/PWM FANCTRL 16SSOP

39279975

MAX6641AUB92+

MAX6641AUB92+

Maxim Integrated

IC TEMP MONITOR SMBUS 10UMAX

154

AD595CDZ

AD595CDZ

Analog Devices, Inc.

IC THERMOCOUPLE INSTR AMP 14CDIP

365

MCP9844T-BE/MNYAA

MCP9844T-BE/MNYAA

Roving Networks / Microchip Technology

IC DIMM TEMP SENSOR 8TDFN

0

STTS2004B2DN3F

STTS2004B2DN3F

STMicroelectronics

MOD TEMP SENSOR 4KB EEP 8TDFN

70063

AD594ADZ

AD594ADZ

Analog Devices, Inc.

IC THERMOCOUPLE INSTR AMP 14CDIP

297

MAX31865ATP+

MAX31865ATP+

Maxim Integrated

IC RTD TO DIGITAL CONVERT 20QFN

7748

MCP98243-BE/MC

MCP98243-BE/MC

Roving Networks / Microchip Technology

IC TEMP SENSOR 3V 2WIRE 8-DFN

547

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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