PMIC - Power Distribution Switches, Load Drivers

Part Number	Description / PDF	Quantity
TPS22945DCKRG4 Texas Instruments	IC PWR SWITCH P-CHAN 1:1 SC70-5	0
TPS2062DRG4 Texas Instruments	IC PWR SWITCH N-CHAN 1:2 8SOIC	0
TPS2047BD Texas Instruments	IC PWR SWTCH N-CH 1:2/1:1 16SOIC	280
TPS2543RTET Texas Instruments	IC PWR SWITCH N-CHAN 1:1 16WQFN	1109
TPS2226DBG4 Texas Instruments	IC PWR SWITCH 3:4 30SSOP	0
TPS2051ADR Texas Instruments	POWER SUPPLY SUPPORT CIRCUIT, FI	27750
TPS22976NDPUR Texas Instruments	IC PWR SWITCH N-CHAN 1:1 14WSON	4191
TPS2042BDGNR Texas Instruments	IC PWR SWITCH N-CHAN 1:2 8MSOP	0
TPS2224ADBG4 Texas Instruments	IC PWR SWITCH 3:4 24SSOP	0
TPS2206IDAPR Texas Instruments	POWER SUPPLY CIRCUIT, FIXED	30000
TPS2001DDBVR Texas Instruments	IC PWR SWITCH N-CHAN 1:1 SOT23-5	0
TPS2561QDRCRQ1 Texas Instruments	IC PWR SWITCH N-CHAN 1:2 10VSON	4920
TPS2216ADAP Texas Instruments	TPS2216A 1A DUAL-SLOT PC CARD PO	8485
TPS2061CDGNR Texas Instruments	TPS2061C SINGLE CHANNEL, CURRENT	112500
TPS2561DRCR Texas Instruments	IC PWR SWITCH N-CHAN 1:2 10VSON	354
TPS22971YZPR Texas Instruments	IC PWR SWITCH N-CHAN 1:1 8DSBGA	1497
TPS2051AD Texas Instruments	IC PWR SWITCH N-CHAN 1:1 8SOIC	150
TPS2068DR Texas Instruments	IC PWR SWITCH N-CHAN 1:1 8SOIC	0
TPS2044DRG4 Texas Instruments	IC PWR SWITCH N-CH 2X1:2 16SOIC	0
TPS2062ADR Texas Instruments	TPS2062A CURRENT-LIMITED, POWER	3419

PMIC - Power Distribution Switches, Load Drivers

1. Overview

Power Management Integrated Circuits (PMICs) featuring Power Distribution Switches and Load Drivers are critical components in modern electronic systems. These devices manage power routing, load control, and protection functions in applications ranging from portable devices to industrial equipment. Power Distribution Switches handle voltage/current path selection, while Load Drivers provide controlled driving capability for high-current loads. Their integration improves system efficiency, reduces component count, and enhances reliability.

2. Main Types & Functional Classification

Type	Functional Characteristics	Application Examples
Load Switches	Low R_DS(on), fast turn-on/off, inrush current control	Smartphones, laptops, servers
Distribution Switches	Multi-channel power path management, fault isolation	Automotive systems, industrial PLCs
Smart Load Drivers	Integrated FETs + protection logic, current sensing	Robotics, motor controls, LED lighting
Hot Swap Controllers	Controlled startup, overcurrent/voltage protection	Data center servers, telecom equipment

3. Structure & Composition

Typical components include:

Power MOSFETs (usually NMOS/PMOS) with low on-resistance
Gate drivers and control logic circuits
Protection modules (OCP, OVP, OTP, UVLO)
Current sensing elements (shunt resistors or amplifiers)
Thermal management structures (heat spreaders, thermal vias)

Common packaging: QFN, TSSOP, BGA with exposed thermal pads

4. Key Technical Specifications

Parameter	Description	Importance
R_DS(on)	On-state resistance (1-50 m range)	Directly affects conduction loss
I_MAX	Maximum continuous current (0.5-10A typical)	Determines load capacity
V_SUPPLY	Operating voltage range (2.7-40V typical)	System compatibility factor
t_ON/OFF	Switching transition time (1-100 s)	Affects EMI and power efficiency
Quiescent Current	Standby power consumption ( A range)	Battery life consideration

5. Application Fields

Consumer Electronics: Smartphones (display/backlight drivers), notebooks (peripheral power control)
Automotive: Electric vehicle power distribution, ADAS sensor power management
Industrial: PLCs, motor drives, test equipment
Telecom/Datacom: Server power rails, PoE systems, base stations
Medical: Portable diagnostic devices, imaging equipment

6. Leading Manufacturers & Products

Manufacturer	Product Series	Key Features
Texas Instruments	TPS229xx family	18m R_DS(on), 6A rating, load current monitoring
STMicroelectronics	VN7000 series	Smart high-side switches, automotive qualified
Infineon	BTS7xx series	Integrated diagnostics, 24V operation
ON Semiconductor	NCP380 series	40V tolerant, fast overcurrent protection

7. Selection Recommendations

Key consideration factors:

Current/voltage requirements with safety margins (>20% over spec)
Thermal performance: Junction-to-ambient thermal resistance
Protection features matching application environment
Control interface compatibility (GPIO, I2C, PWM)
Package size vs. board space constraints

Case Study: For a 12V/3A motor driver in an industrial robot, select a device with:

R_DS(on) < 30m to limit loss to <0.27W
Operating temperature range -40 C to 125 C
Integrated current sensing for feedback control

8. Industry Trends

Integration of GaN/SiC FETs for higher efficiency (2024-2030)
Development of bidirectional switches for energy recovery systems
Increasing adoption of digital control interfaces (PMBus compliance)
Tighter functional safety compliance (ISO 26262 for automotive)
Advanced thermal packaging (double-sided cooling, copper pillar technology)