PMIC - Power Management

PMIC - Power Management - Specialized

Image	Part Number	Description / PDF	Quantity	Rfq
	RT5112HWSC Richtek	IC PMIC FOR CAMERA WL-CSP-25	0
	RT5112WSC Richtek	IC PMIC FOR CAMERA WL-CSP-25	0
	RT1650WSC Richtek	WIRELESS PWR RECEIVER WLCSP48	0
	RT9953GQW Richtek	IC 4CH POWER MANAGEMENT	0
	RT9595GQW Richtek	IC PHOTOFLASH CAP CHRGR 10WDFN	0
	RT9945GQW Richtek	IC LI-ION CHARGE MGMT 40WQFN	0
	RT9941GQW Richtek	IC LI-ION CHARGE MGMT 40WQFN	0
	RT9297AGQW Richtek	IC POWER MGMT 10WDFN	0
	RT9921DGQV Richtek	IC POWER MGMT VQFN	0
	RT9911GQV Richtek	IC DC-DC CONV 6CH 40VQFN	0
	RT5002AZQW Richtek	IC POWER MANAGEMENT	0
	RT9595PGQW Richtek	IC PHOTOFLASH CAP CHARGER DFN	0
	RT5025AGQW Richtek	IC POWER MANAGEMENT	0
	RT9919GQW Richtek	IC POWER MANAGEMENT	0
	RT1650BWSC-2 Richtek	IC WIRELESS PWR RCVR WLCSP	0

PMIC - Power Management - Specialized

1. Overview

Specialized Power Management ICs (PMICs) are application-specific integrated circuits designed to optimize power distribution and management in electronic systems. These devices provide tailored solutions for voltage regulation, battery management, power sequencing, and energy efficiency optimization. Their importance in modern technology lies in enabling compact designs, reducing power consumption, and improving reliability for applications ranging from mobile devices to automotive systems.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Battery PMICs	Integrate battery charging, fuel gauging, and protection circuits	Smartphones, wearable devices
DC-DC Controllers	Regulate voltage conversion with external MOSFETs	High-performance computing (HPC) systems
AC-DC Controllers	Convert AC to DC with power factor correction (PFC)	Server power supplies, industrial equipment
LED Drivers	Provide constant current for LED arrays	Automotive lighting, display backlighting
Multi-Channel PMICs	Support multiple regulated outputs with sequencing	Medical imaging equipment, IoT gateways

3. Structure and Components

Typical physical structure includes:

QFN/BGA packages for compact PCB integration
Internal blocks: Voltage regulators (LDOs, DC-DC converters), ADC/DAC modules, I2C/SPI interfaces
Protection circuits: Overcurrent (OCP), Overvoltage (OVP), Thermal shutdown (OTP)

4. Key Technical Specifications

Parameter	Importance
Input Voltage Range	Determines compatibility with power sources (e.g., 2.7V-24V for battery systems)
Output Current Capability	Defines maximum load support (e.g., 0.5A-10A per channel)
Efficiency (Typical >90%)	Impacts thermal performance and battery life
Quiescent Current	Crucial for low-power standby modes (<10 A typical)
Protection Features	Ensures reliability under fault conditions
Operating Temperature	Industrial (-40 C to +125 C) or automotive (-40 C to +150 C) grades

5. Application Areas

Consumer Electronics: Mobile phones, tablets, AR/VR headsets
Automotive: ADAS systems, electric vehicle (EV) battery management
Industrial: PLC systems, robotics actuators
Healthcare: Portable diagnostic devices, MRI gradient coil drivers
IoT: Edge sensors, smart meters

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
Texas Instruments	TPS65912	6-channel PMIC for AMOLED displays
STMicroelectronics	STM32L4 Series PMIC	Ultra-low-power with dynamic voltage scaling
ON Semiconductor	NCP185x	High-current battery charger with JEITA compliance
Analog Devices	LTC297x	Digital power system management (PSM) IC
Infineon	PSoC 6 PMIC	Integrated with microcontroller for IoT applications

7. Selection Guidelines

Define system power rails and sequencing requirements
Match input voltage range with source characteristics (battery, AC adapter, etc.)
Evaluate thermal performance under maximum load
Prioritize protection features for critical applications
Consider digital monitoring capabilities for smart systems

8. Industry Trends

Key trends shaping PMIC development:

Integration of wide-bandgap (SiC/GaN) drivers in power stages
AI-enabled dynamic power optimization for edge computing
48V direct-to-load architectures for data centers
Functional safety compliance (ISO 26262) for automotive systems
Sub-1 A leakage current management for battery-free IoT devices