PMIC - Thermal Management

Image	Part Number	Description / PDF	Quantity	Rfq
	DS1629S-C05+T&R Maxim Integrated	IC THERM/RTC/CALENDAR DGTL 8SOIC	0
	ADM1021ARQZ-R7 Sanyo Semiconductor/ON Semiconductor	IC TEMP SENSOR DUAL3/5.5V 16QSOP	0
	LTC2984HLX Analog Devices, Inc.	IC PWR SUPPLY MGR	0
	ADM1026JST-REEL Sanyo Semiconductor/ON Semiconductor	IC CNTRL SYS REF/EEPROM 48LQFP	0
	ADM1033ARQ-REEL7 Sanyo Semiconductor/ON Semiconductor	IC THERM/FAN SPEED CTRLR 16-QSOP	0
	ADT7473ARQZ-1REEL Sanyo Semiconductor/ON Semiconductor	IC THERM MON FAN CTRLR 16-QSOP	0
	SE97TL,147 NXP Semiconductors	IC TEMP SENSOR DDR 3.3V 8-HXSON	0
	MAX6604ATA+T Maxim Integrated	IC TEMP SENSOR DDR MEMORY 8TDFN	0
	ADT7490ARQZ Sanyo Semiconductor/ON Semiconductor	IC MON/FAN CTRLR REMOTE 24-QSOP	0
	W83L771G Nuvoton Technology Corporation America	IC H/W MONITOR 8-TSSOP	0
	ADT7462ACPZ-REEL7 Sanyo Semiconductor/ON Semiconductor	IC TEMP/VOLT MONITOR 32-LFCSP	0
	LM63DIMA Texas Instruments	IC TEMP SENSOR REMOTE FAN 8-SOIC	0
	MCP98242T-BE/MCBAA Roving Networks / Microchip Technology	IC TEMP SENSOR 2WIRE 8-DFN	0
	TSE2002B3CNRG8 Renesas Electronics America	IC TEMP SENS EEPROM DFN-8	0
	ADT7485AARMZ-REEL7 Sanyo Semiconductor/ON Semiconductor	IC TEMP/VOLT DGL SENS SST 10MSOP	0
	ADT7463ARQZ-R7 Sanyo Semiconductor/ON Semiconductor	IC CTLR REMOTE THERMAL 24-QSOP	0
	MAX6604ATA+TW Maxim Integrated	IC TEMP SENSOR DDR MEMORY 8TDFN	0
	MAX6645BAFAUB+T Maxim Integrated	IC CNTRLR FAN SPEED 10-UMAX	0
	ADM1027ARQZ-REEL7 Sanyo Semiconductor/ON Semiconductor	IC REMOTE THERMAL CTRLR 24QSOP	0
	ADT7473ARQZ-REEL7 Sanyo Semiconductor/ON Semiconductor	IC REMOTE THERMAL CTRLR 16QSOP	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)