PMIC - Thermal Management

Part Number	Description / PDF	Quantity
ADT7517ARQZ Analog Devices, Inc.	SERIAL TEMPERATURE SENSOR	150
MCP98244T-BE/MNY Roving Networks / Microchip Technology	IC TEMP SENSOR SPD EEPROM 8TDFN	8644
ADM1027ARQZ Analog Devices, Inc.	DBCOOL REMOTE THERMAL CONTROLLER	50
LTC1392CN8#PBF Analog Devices, Inc.	IC DATA ACQ SYSTEM 10BIT 8-DIP	0
MAX1805MEE Analog Devices, Inc.	REMOTE/LOCAL TEMPERATURE SENSOR	661
LM81BIMT-3/NOPB Texas Instruments	IC MONITOR SYS HARDWARE 24TSSOP	6039943
UC2730N Texas Instruments	ANALOG CIRCUIT, 1 FUNC, BIPOLAR	3423
AD597AR Analog Devices, Inc.	TEMP SENSOR ANALOG	1830
LTC2995IUD#TRPBF Analog Devices, Inc.	IC TEMP SENSOR VOLT MNTR 20QFN	0
ADM1030ARQ-REEL Analog Devices, Inc.	INTELLIGENT TEMPERATURE MONITOR	0
ADM1021ARQ-REEL Analog Devices, Inc.	MICROPROCESSOR SYSTEM TEMPERATUR	13440
EMC2103-2-AP-TR Roving Networks / Microchip Technology	IC RPM FAN CTRLR 16QFN	1022
SE98ATP,547 NXP Semiconductors	IC TEMP SENSOR DDR 8-HWSON	18726
ADT7476AARQZ	SERIAL SWITCH/DIGITAL SENSOR	25693
LM96163CISDX/NOPB Texas Instruments	IC TEMP SENSOR DGTL REMOTE 10SON	0
EMC2101-ACZL-TR Roving Networks / Microchip Technology	IC FAN CTRLR I2C/SMBUS 8MSOP	4817
MAX31865AAP+T Maxim Integrated	IC RTD TO DIGITAL CONVERT 20SSOP	8556
LM81BIMTX-3/NOPB Texas Instruments	IC MPU SYSTEM HDWR MON 24-TSSOP	589110000
MAX1669EEE Analog Devices, Inc.	FAN CONTROLLER	2476
MAX6645ABFAUB+ Maxim Integrated	IC CNTRLR FAN SPEED 10-UMAX	47

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)