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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Motor Drivers, Controllers

STMicroelectronics VNH5050A-E

Name: VNH5050A-E
Brand: STMicroelectronics
SKU: VNH5050A-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VNH5050A-E

Manufacturer:: STMicroelectronics

Category:: Motor Drivers, Controllers

Package:: 36-PowerBFSOP (0.295", 7.50mm Width)

Datasheet:: VNH5050A-E.pdf

Description:: IC MTR DRVR 5.5V-18V 36POWERSSO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

VNH5050A-E from STMicroelectronics is an automotive-grade fully integrated H-bridge motor driver with dual monolithic high-side drivers and two low-side switches built using VIPower® M0 technology. It delivers up to 30 A DC output current, supports 41 V maximum supply voltage, and enables PWM speed control up to 20 kHz. It is used in power seat actuators, HVAC blower control, and electric power steering auxiliary modules.

For engineers reviewing the VNH5050A-E datasheet, VNH5050A-E pinout, VNH5050A-E application, or VNH5050A-E equivalent, key selection criteria include R_DS(on) per leg (50 mΩ max), thermal shutdown threshold (150–200 °C), current sense accuracy (±14% drift over temperature), and fault diagnostics via open-drain ENA/DIAGA and ENB/DIAGB pins.

Technical Context

The device integrates three dies-two high-side drivers and one dual low-side switch-in a PowerSSO-36 TP package with electrically isolated lead frames and exposed die pads for enhanced thermal dissipation. Its logic control block implements truth-table-based direction/brake selection via INA/INB, while PWM modulates low-side FETs during on-phase for precise speed regulation.

Protection architecture includes independent undervoltage (3–5 V) and overvoltage (24–30 V) shutdown, high-side/low-side clamp circuits limiting V_CLP to 41–52 V, thermal shutdown with 16 °C hysteresis, and dynamic cross-conduction current limitation (≤1 A). Fault detection pulls ENA/DIAGA or ENB/DIAGB low to signal short-to-ground, short-to-VCC, or thermal overload.

Key Specifications

Parameter	Value and Actual Design Meaning
Output current	30 A DC continuous - supports high-torque automotive motors without external heatsinking under defined PCB copper area
R_DS(on) (per leg)	50 mΩ max - ensures ≤1.2 W conduction loss at 30 A, enabling efficient operation in 12 V systems
V_CC max	41 V - withstands load-dump transients per ISO 7637-2 Pulse 5a, suitable for 24 V commercial vehicle applications
PWM frequency	Up to 20 kHz - eliminates audible noise in motor drive while maintaining gate drive efficiency
Current sense gain	K = 4100–6270 A/A - provides scalable analog feedback for closed-loop current control with ±14% full-temperature drift
Thermal shutdown	150–200 °C junction - latches off affected half-bridge to prevent irreversible die damage during overload
Supply current (standby)	3–10 µA - enables always-on functionality in battery-sensitive automotive modules

Pinout & Package

Package: PowerSSO-36 TP - thermally enhanced surface-mount package with three electrically isolated heat slugs (Slug1: VCC/HS drains; Slug2: OUTA/HS-A drain & LS-A source; Slug3: OUTB/HS-B drain & LS-B source) and exposed die pads for direct PCB thermal coupling.

Pin/Terminal	Circuit Role	Design Meaning
INA, INB	Direction control inputs	CMOS-compatible with hysteresis; select clockwise/counter-clockwise/brake modes per truth table without external level-shifting
PWM	Low-side modulation input	Directly gates LS-FETs during on-phase; 0 V disables both LSA/LSB regardless of INA/INB state
ENA/DIAGA, ENB/DIAGB	Enable/fault reporting pins	Open-drain bidirectional pins; pulled high externally to enable half-bridge; pulled low internally on fault (thermal, short, UV/OV)
CS, CS_DIS	Current sense interface	CS outputs proportional current (I_OUT/K); CS_DIS high disables CS (high-Z), enabling shared ADC channel usage
OUTA, OUTB	Motor power terminals	High-current outputs tied to HS sources and LS drains; each connected to dedicated heat slug for thermal isolation
GND_A, GND_B	Low-side return paths	Separate ground returns per half-bridge minimize ground bounce and improve fault localization

Key Features

Feature	Design Value
Integrated VIPower® M0 technology	Monolithic integration of Power MOSFET + protection logic on single die per switch, eliminating discrete gate-driver layout complexity
Cross-conduction protection	Hardware-enforced dead-time and dynamic current monitoring prevent shoot-through even during fast PWM transitions
Loss-of-ground/VCC detection	Dedicated sensing circuitry independently monitors continuity of GND_A, GND_B, and VCC paths to trigger immediate shutdown
Overvoltage clamp (41–52 V)	Active clamping limits transient energy dissipation in HS/LS devices, reducing need for external TVS diodes
ECOPACK® compliance	Lead-free, RoHS-compliant packaging with halogen-free molding compound meeting automotive environmental requirements

Applications

Power Seat Actuation

HVAC Blower Control

Use Scenario: Bidirectional linear actuator driving seat fore/aft and recline motion in premium vehicles.

IC Role / Device Role / Timing Role: Full-bridge driver controlling 12 V DC brushed motor; INA/INB set direction, PWM regulates speed, CS monitors stall current for position feedback.

Use Value: Integrated current sense and thermal protection eliminate need for external shunt + op-amp, reducing BOM count by 4 components per axis.

Use Scenario: Variable-speed centrifugal blower in automotive climate control system.

IC Role / Device Role / Timing Role: H-bridge driver operating in forward/reverse mode for airflow reversal; PWM at 15–20 kHz avoids acoustic resonance in ductwork.

Use Value: 30 A rating supports peak startup torque; standby current <10 µA extends battery life during vehicle sleep mode.

Electric Power Steering Assist

Engine Cooling Fan Control

Use Scenario: Auxiliary 12 V motor providing torque assist in column-assist EPS systems.

IC Role / Device Role / Timing Role: Motor driver with real-time current feedback (CS) for torque estimation; ENA/DIAGA signals thermal faults to ECU within 10 µs.

Use Value: 50 mΩ R_DS(on) minimizes I²R losses during sustained assist, improving system efficiency by ≥8% vs. discrete solutions.

Use Scenario: Dual-speed radiator fan driven by 24 V commercial vehicle electrical system.

IC Role / Device Role / Timing Role: High-side controlled bridge enabling reverse rotation for debris clearing; V_CC max = 41 V sustains operation during 28 V load dump events.

Use Value: Overvoltage clamp (41–52 V) absorbs transient energy without external clamping, reducing PCB area by 25 mm².

Equivalent & Alternatives

The following parts are listed as comparable options for similar H-bridge motor driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DRV887x-Q1 (TI)	Higher R_DS(on) (70 mΩ typ), integrated current sense amplifier (not raw current output), no separate EN/DIAG pins	Requires external op-amp for analog current scaling; lacks independent half-bridge disable capability	Prefer when integrated amplification and SPI diagnostics outweigh need for discrete current scaling flexibility
BTS71620 (Infineon)	Lower current rating (15 A), single half-bridge per package, requires dual ICs for full bridge	Increases PCB area and interconnect complexity; no shared thermal slug architecture	Choose only when lower power (≤15 A) and modular design justify doubled component count and footprint

Compared with DRV887x-Q1 and BTS71620, the VNH5050A-E uniquely combines 30 A full-bridge integration, raw current-sense output for custom scaling, and per-leg diagnostic enable/disable-making it optimal for space-constrained, high-reliability automotive actuators requiring deterministic fault response.

Availability

VNH5050A-E is available at Aetrix Electronics and suitable for automotive power seat modules, HVAC blower systems, electric power steering assist units, and engine cooling fan control requiring stable component supply across extended temperature and lifetime requirements.

Supply support for VNH5050A-E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management ICs with vertical manufacturing and AEC-Q100 qualification expertise.

The VNH5050A-E belongs to ST's VIPower® automotive motor driver product line, engineered specifically for robust, high-current DC motor control in harsh environments where thermal resilience, fault transparency, and ISO 7637-2 compliance are mandatory.

FAQ

What is the recommended PCB layout for thermal management of the VNH5050A-E?

Use minimum 200 mm² of 2-oz copper per heat slug (Slug1, Slug2, Slug3), connected via ≥8 thermal vias (0.3 mm diameter) to inner/ground planes. Maintain ≥1.5 mm clearance between slugs and isolate GND_A/GND_B pours. Follow Figure 15 in Doc ID 16009 Rev 11 for copper area vs. R_thj-amb optimization.

How does the current sense output (CS) interface with a microcontroller ADC?

Connect CS to a precision resistor (e.g., 800 Ω) tied to ground; measure voltage across it. At I_OUT = 10 A, V_SENSE ≈ 1.6 V (K2 typ). Ensure CS_DIS = 0 V for active mode. ADC input must tolerate up to 5 V (max V_SENSE) and resolve ≤10 mV steps for ±1% current measurement accuracy.

Can VNH5050A-E operate with a 5 V logic supply while VCC is 24 V?

Yes. INA, INB, PWM, CS_DIS, and ENA/DIAGA/ENB/DIAGB are 3 V CMOS-compatible and tolerate VIH ≥ 2.1 V. No level shifters needed. However, ENA/DIAGA/ENB/DIAGB require external pull-up to VCC (not 5 V) to ensure proper fault signaling and enable functionality.

What fault conditions cause ENA/DIAGA to go low, and how is recovery handled?

ENA/DIAGA pulls low on thermal shutdown of HS-A/LS-A, short-to-ground on OUTA, short-to-VCC on OUTA, or undervoltage on VCC. Recovery is automatic after fault removal and T_j drops below reset threshold (135 °C) - no reset pulse required. The truth table in Section 13 confirms latched behavior until thermal/electrical conditions normalize.

VNH5050A-E Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: ECOPACK®, VIPower™

Package/Case:: 36-PowerBFSOP (0.295", 7.50mm Width)

Packaging:: Tube

Product Status:: Obsolete

Motor Type - Stepper:: -

Motor Type - AC, DC:: Brushed DC

Function:: Driver - Fully Integrated, Control and Power Stage

Output Configuration:: Half Bridge (2)

Interface:: Parallel, PWM

Technology:: Power MOSFET

Step Resolution:: -

Applications:: -

Current - Output:: 30A

Voltage - Supply:: 5.5V ~ 18V

Voltage - Load:: 5.5V ~ 18V

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerSSO-36 TP

VNH5050A-E FAQ

1.How can I place an order for VNH5050A-E through Aetrix?

Please submit a Request for Quotation (RFQ) for VNH5050A-E on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for VNH5050A-E reliable?

The price and inventory of VNH5050A-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VNH5050A-E is usually 5 days.

3.What payment methods are accepted for VNH5050A-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VNH5050A-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VNH5050A-E?

VNH5050A-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VNH5050A-E order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for VNH5050A-E?

For technical support, including VNH5050A-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VNH5050A-E requirements.

6.How does Aetrix verify that VNH5050A-E is sourced from the original manufacturer or authorized distributors?

All VNH5050A-E products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that VNH5050A-E meets industry standards.

7.What is the process for return or replacement of VNH5050A-E?

All VNH5050A-E units undergo pre-shipment inspection (PSI). If there is an issue with VNH5050A-E, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The VNH5050A-E part is unused and in its original packaging.

Return procedure for VNH5050A-E:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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