PMIC - Full, Half-Bridge Drivers

Image	Part Number	Description / PDF	Quantity	Rfq
	VN5770AK-E STMicroelectronics	IC MOTOR DRIVER PAR 28SO	0
	NJW4301M New Japan Radio (NJR)	IC BRIDGE DRIVER 2CH 4V 30-SDMP	0
	M81705FP Powerex, Inc.	HVIC 600V 150-125MA 8-SOP	0
	E-L6204 STMicroelectronics	IC BRIDGE DRIVER PAR 20POWERDIP	0
	BTS7741GNUMA1 IR (Infineon Technologies)	IC BRIDGE DRIVER PAR 28DSO	0
	ATA6828-T2SY Roving Networks / Microchip Technology	IC DRIVER TRPL HALFBRIDGE 14PSOP	0
	M81703FP Powerex, Inc.	HVIC 600V 2A 16-SOP	0
	BTN7973BAUMA1 IR (Infineon Technologies)	IC NOVALITHIC 1/2 BRIDGE TO263-7	0
	NCV7703D2R2G Sanyo Semiconductor/ON Semiconductor	IC DRVR HALF BRIDGE TRPL 14-SOIC	0
	LB1940U-TLM-E Sanyo Semiconductor/ON Semiconductor	IC MOTOR DRIVER PAR 20MSOP	0
	ATA6832C-PIQW-1 Roving Networks / Microchip Technology	IC HALF-BRIDGE DRVR SPI 18QFN	0
	M81713FP Powerex, Inc.	HVIC DRVR 600V 500MA 8-SOP	0
	BTS7710GPNTMA1 IR (Infineon Technologies)	IC SW TRILITHIC 110MOHM TO263-15	0
	IR3551MTRPBF IR (Infineon Technologies)	IC REG BUCK SYNC ADJ 50A 28PQFN	0
	LA6586FA-AH Sanyo Semiconductor/ON Semiconductor	IC MOTOR DRIVER ON/OFF 10MICRO	0
	E-L6207D013TR STMicroelectronics	IC BRIDGE DRIVER PAR 24SOIC	0
	LA6588MC-BH Sanyo Semiconductor/ON Semiconductor	IC BRIDGE DRIVER ON/OFF MFP10SK	0
	IRSM516-076DA2 IR (Infineon Technologies)	IC MICRO MCM DRIVER 23DIP	0
	BA6218 ROHM Semiconductor	IC BRIDGE DRIVER PAR SIP9	0
	U6820BM-MFP Roving Networks / Microchip Technology	IC DRIVER BCDMOS DUAL/QD 16-SOIC	0

PMIC - Full, Half-Bridge Drivers

1. Overview

Full and Half-Bridge Drivers are critical components in power management integrated circuits (PMICs), designed to control power transistors in high-side and low-side configurations. These drivers enable precise switching of MOSFETs or IGBTs in power conversion systems, playing a pivotal role in motor control, DC-DC converters, and motorized industrial equipment. Their ability to manage high-voltage/current loads with minimal switching losses makes them indispensable in modern electrification and automation systems.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Full-Bridge Driver	Controls four power transistors in H-bridge configuration, enabling bidirectional current flow	Brushed DC motor control, servo actuators, resonant converters
Half-Bridge Driver	Drives high-side and low-side transistors in complementary mode	DC-DC converters, BLDC motor drives, Class-D amplifiers

3. Structure and Composition

Typical physical construction includes:

Multi-layer QFN/TSSOP packaging with thermal pad
Internal level shifters for high-side gate driving
Dead-time control logic to prevent shoot-through
Integrated protection circuits (OCP, OTP, UVLO)
Bootstrap circuitry for high-side power supply

Technical composition combines CMOS control logic with high-voltage DMOS output stages.

4. Key Technical Specifications

Parameter	Typical Range	Importance
Operating Voltage	4.5V-100V	Determines system compatibility
Peak Drive Current	0.2A-4.0A	Affects switching speed and efficiency
Switching Frequency	100kHz-2MHz	Impacts system size and EMI
RDS(on)	50m -300m	Directly affects conduction loss
Propagation Delay	5ns-100ns	Critical for high-frequency synchronization

5. Application Areas

Industrial automation (servo drives, robotic arms)
Electric vehicles (on-board chargers, DC-DC converters)
Consumer electronics (BLDC motor drives in appliances)
Medical equipment (precision actuator control)
Renewable energy systems (solar inverters, energy storage)

6. Leading Manufacturers and Products

Manufacturer	Product Series	Key Features
TI	DRV8703D	Three-phase gate driver with current sensing
STMicro	L6398	High-voltage half-bridge driver with bootstrap
Infineon	IRS2003	300V half-bridge driver for Class-D audio
ON Semi	NCP5911B	Single-channel high-side driver with diagnostics
Renesas	ISL78692	Automotive full-bridge controller with PWM

7. Selection Guidelines

Key considerations:

Match voltage rating with system bus voltage (1.5x safety margin)
Calculate RMS current requirements vs. package thermal capability
Evaluate dead-time adjustability for specific switching frequency
Select appropriate protection features for operating environment
Consider package size vs. cooling requirements

Example: For 48V motor drives, select drivers with 80V rating, >1A peak current, and thermal shutdown.

Industry Trend Analysis

Future development focuses on:

Integration with current sensing and protection circuits
Adoption of wide-bandgap device drivers (SiC/GaN compatibility)
Intelligent drivers with digital interfaces (PWM/PWM with feedback)
Reduced on-resistance (<50m ) for high-current applications
AEC-Q100 automotive qualification becoming standard

The market is shifting towards higher integration and smarter power management solutions driven by EV and IoT applications.