PMIC - Power Supply Controllers, Monitors

Part Number	Description / PDF	Quantity
MAX4971EWC+T Analog Devices, Inc.	SURGE PROTECTION CIRCUIT, BICMOS	12500
ADM1041ARQ-2 Analog Devices, Inc.	CONTROLLER WITH CURRENT SHARE	548
LTC2945HMS#TRPBF Analog Devices, Inc.	IC POWER MONITOR I2C 12MSOP	0
FAN7687AMX	POWER SUPPLY CIRCUIT, FIXED	26324
APR346K6TR-G1 Zetex Semiconductors (Diodes Inc.)	ACDC SYNCH RECT CONT SOT26	2990
LTC2954CDDB-1#TRPBF Analog Devices, Inc.	IC PUSH BUTTON ON/OFF CTRLR 8DFN	0
NCP4306DAHZZAASNT1G Sanyo Semiconductor/ON Semiconductor	SECONDARY SIDE SYNCHRONOU	54019000
MAX16050ETI+ Maxim Integrated	IC POWER MONITR/SEQUENCER 28TQFN	640450
ISL9501CVZ Intersil (Renesas Electronics America)	IC REG CTRLR BUCK 38TSSOP	0
MAX786EAI Analog Devices, Inc.	MAX786 DUAL-OUTPUT POWER-SUPPLY	0
NCP4353BSNT1G Sanyo Semiconductor/ON Semiconductor	IC SECONDARY CTLR SMPS	294536000
ISPPAC20-01JI Lattice Semiconductor	ANALOG CIRCUIT, 1 FUNC PQCC44	4690
LTM4671EY#PBF Analog Devices, Inc.	QUAD DC/DC ΜMODULE REGULATOR WIT	240
LM3880MF-1AD/NOPB Texas Instruments	IC PWR SUPPLY SEQUENCER SOT23-6	7656
L6599AD STMicroelectronics	IC RESONANT CONVRTR CTRLR 16SOIC	343
ISL88550AIRZ-T7 Intersil (Renesas Electronics America)	IC PWM CONTROLLER 28TQFN	0
NCP362CMUTBG	TRANS VOLTAGE SUPPRESSOR DIODE	3000
NCP367DPMUEETBG Sanyo Semiconductor/ON Semiconductor	IC VOLT PROTECTRION OCP OVP 8DFN	15000
LM3880QMF-1AD/NOPB Texas Instruments	IC PWR SUPPLY SEQUENCER SOT23-6	950
LM3880MFX-1AD/NOPB Texas Instruments	IC PWR SUPPLY SEQUENCER SOT23-6	0

PMIC - Power Supply Controllers, Monitors

1. Overview

Power Supply Controllers and Monitors (PSCMs) are critical subcategories of Power Management Integrated Circuits (PMICs) that manage voltage regulation, current control, power sequencing, and system monitoring in electronic devices. These components ensure stable power delivery, optimize energy efficiency, and protect against faults such as overvoltage, undervoltage, and overheating. Their importance spans across consumer electronics, industrial systems, automotive electronics, and IoT devices, where precise power management is essential for performance and reliability.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Multi-Channel Controllers	Supports multiple independent or synchronized power rails; integrated MOSFET drivers	Smartphones, FPGA power supplies
Single-Channel Controllers	Optimized for dedicated DC-DC or AC-DC conversion; high precision regulation	Wearable devices, sensor modules
Power Monitors	Measures voltage, current, power, and temperature; I C/SMBus communication	Server power management, battery monitoring
Digital Power Controllers	Programmable via PMBus; real-time adaptive control	Data centers, telecom infrastructure

3. Structure and Components

A typical PSCM integrates analog and digital modules within a compact semiconductor package (e.g., QFN, BGA). Key components include:

Reference Voltage Generator: Provides stable voltage references for regulation.
PWM Controller: Adjusts duty cycles for DC-DC converters.
ADC/DAC Modules: Enable analog-to-digital conversion for feedback loops.
Communication Interface: I C, PMBus, or SPI for system integration.
Fault Detection Circuits: Overcurrent, undervoltage, and thermal shutdown protection.

4. Key Technical Parameters

Parameter	Description
Input Voltage Range	Determines compatibility with power sources (e.g., 2.7V 24V for portable devices).
Output Channels	Number of independent or grouped power rails managed.
Monitoring Accuracy	Typical error margin (e.g., 1% for voltage measurements).
Switching Frequency	Impacts efficiency and component size (e.g., 300kHz 2MHz).
Communication Protocol	Defines interface type (e.g., PMBus for digital power systems).

5. Application Fields

Consumer Electronics: Mobile phones, notebooks, gaming consoles.
Industrial: PLCs, motor drives, automation equipment.
Automotive: Battery Management Systems (BMS), ADAS sensors.
Telecom/Data Centers: Servers, networking switches, 5G base stations.
Medical Devices: Portable diagnostics, imaging equipment.

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
Texas Instruments	TPS404x Series	Multi-phase controllers with PMBus interface
STMicroelectronics	L499x Series	High-efficiency synchronous buck controllers
Analog Devices	ADM127x Series	Digital power monitors with fault logging
Infineon Technologies	IRPS5401	Integrated DrMOS solution for servers

7. Selection Guidelines

Key considerations for selecting PSCMs:

Power Requirements: Match input/output voltage/current specifications to system needs.
Integration Level: Choose between standalone controllers and highly integrated PMICs.
Thermal Management: Evaluate package thermal resistance and derating curves.
Communication Needs: Select protocols compatible with host processors (e.g., I C vs. PMBus).
Environmental Conditions: Ensure operating temperature range and reliability meet application demands.
Cost vs. Performance: Balance precision and features against budget constraints.

8. Industry Trends

Emerging trends in PSCM development include:

Higher Integration: Combining controllers, drivers, and monitoring in single chips.
Digitalization: Expansion of PMBus-enabled devices for real-time telemetry.
Wide Bandgap Semiconductors: GaN/SiC compatibility for high-frequency applications.
AI-Driven Optimization: Machine learning algorithms for dynamic power adjustment.
Functional Safety: Enhanced fault diagnostics for ISO 26262/IEC 61508 compliance.