PMIC - Thermal Management

Part Number	Description / PDF	Quantity
MAX6639FAEE+ Maxim Integrated	IC 2CH TEMP MONITOR 16-QSOP	1803
MAX6639AEE+T Maxim Integrated	IC TEMP MONITOR 2CH 16-QSOP	36
ADM1026JSTZ	POWER SUPPLY CIRCUIT, FIXED	663
ADM1023ARQ Analog Devices, Inc.	UPROCESSOR SYSTEM TEMP MONITOR	217
LM96000CIMTX/NOPB Texas Instruments	IC HDWR MON W/FAN CTRL 24-TSSOP	2540
ADT7473ARQZ-RL7	SERIAL SWITCH/DIGITAL SENSOR	14321
MAX6615AEE+T Maxim Integrated	IC TEMP MONITOR DL-CH 16-QSOP	4356
ADT7468ARQZ Analog Devices, Inc.	ANALOG CIRCUIT, 1 FUNC, PDSO24	5154
ADT7490ARQZ-R7	ANALOG CIRCUIT, 1 FUNC, PDSO24	1199
LTC2995CUD#TRPBF Analog Devices, Inc.	IC TEMP SENSOR VOLT MNTR 20QFN	0
EMC2101-R-ACZL-TR Roving Networks / Microchip Technology	IC FAN CTRLR I2C/SMBUS 8MSOP	2539
MCP98244T-BE/MNYAA Roving Networks / Microchip Technology	IC TEMP SENSOR SPD EEPROM 8TDFN	0
DS1629S+ Maxim Integrated	IC THERM/RTC/CALENDAR DIG 8-SOIC	362
LTC2986CLX-1#PBF Analog Devices, Inc.	IC SENSOR TEMP MEASUREMNT 48LQFP	218
ADT7473ARQZ-001	SERIAL SWITCH/DIGITAL SENSOR	686
MAX31865ATP+T Maxim Integrated	IC RTD TO DIGITAL CONVERT 20TQFN	2493
AD597AHZ Analog Devices, Inc.	IC THERMOCOUPLE COND TO-100-10	25
LTC2986ILX#PBF Analog Devices, Inc.	IC SENSOR TEMP MEASUREMNT 48LQFP	0
ADT7463ARQ Analog Devices, Inc.	ANALOG CIRCUIT, 1 FUNC, PDSO24	6775
LTC1392IN8#PBF Analog Devices, Inc.	IC DATA ACQ SYSTEM 10BIT 8-DIP	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

Type	Functional Characteristics	Application Examples
Temperature Monitoring PMIC	Continuous temperature sensing with alert thresholds	Smartphones, laptops
Thermal Protection PMIC	Automatic shutdown during critical temperature events	Industrial motors, battery systems
Dynamic Thermal Regulation PMIC	Adjusts power delivery based on real-time thermal feedback	High-performance computing (HPC), 5G base stations
Multi-Zone Thermal Control PMIC	Independent monitoring of multiple thermal zones	Automotive 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

Parameter	Description	Importance
Temperature Sensing Accuracy	1 C to 3 C tolerance range	Determines protection reliability
Thermal Protection Threshold	Configurable via registers (e.g., 80 C-150 C)	Prevents silicon degradation
Response Time	10 s-1ms for critical shutdown	Minimizes thermal damage risk
Operating Temperature Range	-40 C to +125 C standard	Ensures environmental stability
Power Consumption	10 A-100mA active mode	Impacts battery life in portable devices
Package Type	QFN, BGA, TSSOP	Affects 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

Manufacturer	Product Series	Key Features
Texas Instruments	TPS65000 Series	Multi-channel thermal regulation with 1 C accuracy
STMicroelectronics	STMPS Series	Integrated ADC and I2C interface for thermal monitoring
NXP Semiconductors	PF5000 Series	Digital temperature sensors with programmable thresholds
Infineon Technologies	OPTIREG Series	Automotive-grade thermal protection up to 150 C
Analog Devices	ADM1031 Hot Swap Controller	Dual-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)