PMIC - Thermal Management

Part Number	Description / PDF	Quantity
MAX6644LBAAEE+ Maxim Integrated	IC CNTRLR FAN SPEED 16-QSOP	5369100
ADT7468ARQ Analog Devices, Inc.	ANALOG CIRCUIT, 1 FUNC, PDSO24	8352
LM64CILQ-F/NOPB Texas Instruments	LM64 1 REMOTE AND LOCAL TEMP SEN	900
ADT7518ARQZ-REEL7 Analog Devices, Inc.	SERIAL TEMPERATURE SENSOR	2497
NCT7718W TR Nuvoton Technology Corporation America	IC SMBUS TEMP SENSOR 8MSOP	0
ADT7467ARQ-REEL7 Analog Devices, Inc.	ANALOG CIRCUIT, 1 FUNC, PDSO16	2000
AMC6821SDBQG4 Texas Instruments	IC TEMP MONTR/PWM FANCTRL 16SSOP	9975
ADT7476ARQZ-REEL7 Analog Devices, Inc.	CPU THERMAL AND VOLTAGE MONITOR	3869
AMC80AIPWR Texas Instruments	IC TEMP MON CTRL 2WIRE 24TSSOP	6000
ADT7473ARQZ-1RL Sanyo Semiconductor/ON Semiconductor	IC REMOTE THERMAL CTLR 16QSOP	0
MCP98242T-CE/MUY Roving Networks / Microchip Technology	IC TEMP SENSOR 2WIRE 8-UDFN	3259
LM80CIMT-5/NOPB	POWER SUPPLY MANAGEMENT CIRCUIT	1821
SE97BTP,547 NXP Semiconductors	IC TEMP SENSOR DIMM 8HWSON	12258
AD594CQ Analog Devices, Inc.	IC THERMOCOUPLE A W/COMP 14CDIP	0
TMP512AIRSAT Texas Instruments	IC TEMP SNSR DUAL REMOTE 16QFN	18910000
LM96194CISQ/NOPB	LM96194 4 REMOTE, 1 LOCAL TEMP S	829
MAX6684ESA+ Maxim Integrated	IC DETECTOR FAN FAIL 8-SOIC	273612900
MAX6663AEE+T Maxim Integrated	IC TEMP MON FAN CNTRL 16-QSOP	0
ADM1021AARQZ	ANALOG CIRCUIT, 1 FUNC, PDSO16	8428
LM87CIMTX Texas Instruments	POWER SUPPLY CIRCUIT, FIXED	2500

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)