PMIC - Thermal Management

Part Number	Description / PDF	Quantity
MCP9843-BE/ST Roving Networks / Microchip Technology	IC TEMP SENSOR DGTL 8-TSSOP	283
LM94CIMT/NOPB Texas Instruments	IC HARDWARE MONITOR 56-TSSOP	2312
AD595ADZ Analog Devices, Inc.	IC THERMOCOUPLE INSTR AMP 14CDIP	163
ADM1030ARQ-REEL7 Analog Devices, Inc.	TEMP MONITOR AND FAN CONTROL	56000
ADT7463ARQZ-REEL	ADT7463 - DBCOOL REMOTE THERMAL	2607
MCP9844T-BE/MNY Roving Networks / Microchip Technology	IC DIMM TEMP SENSOR 8TDFN	3806
ADT7490ARQZ-REEL Sanyo Semiconductor/ON Semiconductor	IC THERM MON FAN CTLR 24QSOP	582
LM96000CIMTX	POWER SUPPLY SUPPORT CIRCUIT, AD	2500
ADT7516ARQZ Analog Devices, Inc.	IC TEMP SNSR QUAD DAC 16-QSOP	424
ADT7460ARQ-REEL7	ANALOG CIRCUIT, 1 FUNC, PDSO16	4000
ADM1031ARQ Analog Devices, Inc.	TEMPERATURE MONITOR	860
AD594CD Analog Devices, Inc.	INSTRUMENTATION AMPLIFIER	113
TMP512AIRSAR Texas Instruments	IC TEMP SNSR DUAL REMOTE 16QFN	9000
AMC6821SDBQR Texas Instruments	IC TEMP MONTR/PWM FANCTRL 16SSOP	2268
ADM1021AARQZ-R Sanyo Semiconductor/ON Semiconductor	IC TEMP SENSOR DUAL3/5.5V 16QSOP	1093
MAX6683AUB+T Maxim Integrated	IC TEMP SENSOR MON 10-UMAX	7500
AMC6821SDBQRG4 Texas Instruments	IC TEMP MONTR/PWM FANCTRL 16SSOP	0
MCP98243T-BE/MCAA Roving Networks / Microchip Technology	IC TEMP SENSOR 2WIRE 3V 8-DFN	0
MAX6641AUB94+T Maxim Integrated	IC TEMP MONITOR SMBUS 10UMAX	2500
UC1730J Texas Instruments	ANALOG CIRCUIT, 1 FUNC, BIPOLAR	173

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)