PMIC - Power Distribution Switches, Load Drivers

Part Number	Description / PDF	Quantity
TPS22902YFPR Texas Instruments	IC PWR SWITCH P-CHAN 1:1 4DSBGA	3211
TPS2063DRG4 Texas Instruments	IC PWR SWTCH N-CH 1:2/1:1 16SOIC	0
BD82044FVJ-GE2 ROHM Semiconductor	2.5A CURRENT LIMIT HIGH SIDE SWI	2136
BTS41K0SMENHUMA1 IR (Infineon Technologies)	BTS41K0 - PROFET - SMART HIGH SI	47690
MIC2548-1YMM Roving Networks / Microchip Technology	IC PWR SWITCH N-CHAN 1:1 8MSOP	127
ISO1H801GAUMA1 IR (Infineon Technologies)	IC PWR DRIVER N-CHAN 1:1 DSO-36	7
DB002-02E NVE Corporation	IC PWR SWITCH BIPOLAR 1:1 8SOIC	18000
AP2822CKBTR-G1 Zetex Semiconductors (Diodes Inc.)	IC PWR SWITCH N-CHAN 1:1 SOT23-5	1491
MP62171EK-LF-Z MPS (Monolithic Power Systems)	IC PWR SWITCH 1:1 8MSOP	0
TCK22971G,LF Toshiba Electronic Devices and Storage Corporation	IC PWR SWITCH P-CHAN 1:1 WCSP6E	4809
TPS2034DG4 Texas Instruments	IC PWR SWITCH N-CHAN 1:1 8SOIC	0
AP2142AFGEG-7 Zetex Semiconductors (Diodes Inc.)	IC PWR SWITCH P-CHAN 1:2 8UDFN	6234
NX20P3483UKAZ NXP Semiconductors	IC PWR SWITCH 1:1 42WLCSP	3977
TPS22918TDBVRQ1 Texas Instruments	TPS22918-Q1 5.5V, 2A, 52MOHM AUT	0
VND7050AJ12TR STMicroelectronics	IC PWR DRVR N-CHAN 1:1 PWRSSO12	1135
TPS2231RGPR Texas Instruments	TPS2231 EXPRESSCARD SINGLE POWER	7128
AP2401S-13 Zetex Semiconductors (Diodes Inc.)	IC PWR SWITCH P-CHANNEL 1:1 8SO	0
FPF1006 Sanyo Semiconductor/ON Semiconductor	IC PWR SWITCH P-CH 1:1 6MICROFET	1977
TPS22986YFPR Texas Instruments	IC PWR SUP SELECT 1:2 16DSBGA	0
TPS22961DNYR Texas Instruments	IC PWR SWITCH N-CHAN 1:1 8WSON	0

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)