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STMicroelectronics VN31(011Y)
- Part No.:
- VN31(011Y)
- Manufacturer:
- STMicroelectronics
- Package:
- Pentawatt-5 (Horizontal, Bent and Staggered Leads)
- Datasheet:
-
VN31(011Y).pdf
- Description:
- IC PWR DRVR N-CH 1:1 5PENTAWATT
- Quantity:
- Payment:
- Shipping:
Inventory:2,123
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Product details
Overview
VN31(011Y) from STMicroelectronics is a high-side smart power solid-state relay in PENTAWATT (horizontal) package, designed for automotive ISO-compliant load switching with 31 A continuous output current at Tc = 85 °C, 60 V drain-source breakdown voltage, and 0.03 Ω on-state resistance at 25 °C. It drives grounded resistive or inductive loads in engine control units, body electronics, and lighting modules.
For engineers reviewing the VN31(011Y) datasheet, VN31(011Y) pinout, VN31(011Y) application, or VN31(011Y) equivalent, key selection criteria include thermal shutdown behavior (140 °C trip), open-drain diagnostic output timing (5 ms filtering), inductive demagnetization clamp (–18 V typical), and ISO 7637-2 Pulse 5 Level II surge immunity without external components.
Technical Context
The VN31(011Y) integrates a VIPower MOSFET with embedded protection logic, operating as a single-channel high-side switch controlled by 5 V logic-level input. Its internal architecture includes thermal sensing adjacent to the power die, undervoltage lockout (5 V threshold), and status output decoding for open-load, overtemperature, and VCC-short faults.
Inductive load handling relies on active fast demagnetization via negative clamp voltage generation (–14 to –24 V), reducing energy dissipation during turn-off. Diagnostic functionality implements 5 ms digital filtering on open-load detection and sub-10 µs status delay for overtemperature events, fully complying with ISO 16750-2 and ISO 7637-2 requirements for automotive high-side drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 60 V - Withstands battery transients up to ISO Pulse 5 Level II (46.5 V) without external clamping. |
| IOUT (cont.) | 31 A @ Tc = 85 °C - Sustains full load current in under-hood environments without self-protection activation. |
| RDS(on) | 0.03 Ω @ Tj = 25 °C - Enables <0.5 V drop at 11.5 A nominal current, meeting ISO-defined high-side switch voltage drop limits. |
| Vdemag | –18 V typical - Limits inductive kickback energy dissipation and enables faster current decay (di/dtoff up to 3 A/µs). |
| TTSD / TR | 140 °C / 125 °C - Thermal hysteresis ensures stable re-enable after fault clearance without oscillation. |
| VSTAT (low) | 0.4 V @ ISTAT = 1.6 mA - Compatible with standard CMOS/TTL logic inputs for direct microcontroller interface. |
| t1(on) | 1–10 ms - Configurable open-load detection window prevents false triggers from brief connector bounce or noise. |
Pinout & Package
PENTAWATT (horizontal) package: 5-pin, surface-mountable thermally enhanced plastic housing with exposed metal tab for heatsink mounting; Rthj-case = 1.2 °C/W max supports high-power operation in constrained automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Power ground reference | Common return path for load current and internal protection circuitry; electrically tied to exposed metal tab. |
| 2 - IN | Logic input control | 5 V compatible TTL/CMOS input with internal 6 V clamp; accepts 0.8 V low / 2 V high thresholds with 0.5 V hysteresis. |
| 3 - VCC | Supply input | Accepts 5.5–26 V battery rail; includes undervoltage lockout at 5 V and reverse polarity protection capability. |
| 4 - OUT | High-side switched output | Drives grounded loads; features integrated fast demagnetization clamp and short-circuit current limiting. |
| 5 - STAT | Open-drain diagnostic output | Signals open load (on/off), VCC-short, or overtemperature; requires external pull-up resistor. |
Key Features
| Feature | Design Value |
|---|---|
| ISO-compliant high-side switching | Meets ISO 16750-2 and ISO 7637-2 Pulse 5 Level II without external components; supports Level III with 150 Ω + 1000 µF filter. |
| Integrated fast demagnetization | Generates –18 V clamp during inductive turn-off, reducing dissipation and enabling reliable solenoid/relay control. |
| Diagnostic output with filtering | 5 ms digital filter on open-load detection prevents false alarms from transient disconnections; no delay for overtemperature reporting. |
| Thermal protection with hysteresis | Shuts down at 140 °C junction temperature and auto-recovers at 125 °C, eliminating need for external reset circuitry. |
| Reverse battery resilience | Withstands –26 V continuous reverse supply when protected by Schottky diode between Pin 1 and chassis ground. |
Applications
| Engine Control Module (ECM) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Driving fuel injector solenoids and ignition coil primaries in 12 V gasoline engines. IC Role / Device Role / Timing Role: High-side switch providing precise current-controlled turn-on/turn-off with fast demagnetization to minimize dwell time errors. Use Value: –18 V demagnetization clamp reduces coil energy loss by >40% vs passive snubbers, improving fuel metering accuracy and thermal margin. |
Use Scenario: Controlling headlamp, fog lamp, and interior lighting loads in centralized body electronics. IC Role / Device Role / Timing Role: ISO-certified high-side driver with open-load diagnostics for fail-safe lamp monitoring and CAN-based error reporting. Use Value: 5 ms filtered STAT output enables reliable lamp-open detection without false alerts from vibration-induced contact bounce. |
| Transmission Control Unit (TCU) | Electric Power Steering (EPS) |
|
Use Scenario: Switching hydraulic valve solenoids and shift actuators in automatic transmissions. IC Role / Device Role / Timing Role: Robust high-current switch with short-circuit current limiting and thermal shutdown for safety-critical actuation. Use Value: 140 °C thermal trip point and 1.2 °C/W junction-to-case resistance ensure sustained 31 A operation under hood ambient up to 85 °C. |
Use Scenario: Managing motor phase enable/disable and auxiliary pump control in EPS systems. IC Role / Device Role / Timing Role: High-side power switch with integrated diagnostics supporting ASIL-B functional safety requirements via status feedback. Use Value: STAT output reports overtemperature and open-load faults within <10 µs, enabling real-time torque derating and system-level fault containment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side automotive switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STSPIN250 | Lower current rating (2.8 A), integrated current sense, SPI interface, no demagnetization clamp. | Suitable for low-power motor control, not for high-current solenoid or lamp loads. | Select only for digitally controlled, current-monitored applications where VN31(011Y)'s 31 A capacity is excessive. |
| TPS27082L | 36 V max VCC, 8 A continuous, 10 mΩ RDS(on), no integrated demagnetization, smaller SOIC-8 package. | Lacks ISO Pulse 5 Level II immunity and inductive load optimization; requires external flyback diode. | Prefer for space-constrained non-automotive industrial loads where thermal performance and automotive compliance are secondary. |
Compared with STSPIN250 and TPS27082L, VN31(011Y) uniquely delivers 31 A automotive-grade switching with built-in –18 V demagnetization, ISO Pulse 5 Level II immunity, and diagnostic filtering-making it irreplaceable for high-power, safety-critical vehicle subsystems requiring minimal external components.
Availability
VN31(011Y) is available at Aetrix Electronics and suitable for engine control modules, body control modules, and transmission control units requiring stable component supply across extended automotive product lifecycles.
Supply support for VN31(011Y) 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 capabilities and AEC-Q100 qualified processes.
VN31(011Y) belongs to ST's VIPower high-side driver family, engineered specifically for ISO-compliant automotive load switching with integrated diagnostics, thermal protection, and inductive load management.
FAQ
What is the maximum inductive load energy the VN31(011Y) can safely demagnetize?
The VN31(011Y) sustains safe demagnetization for inductive loads up to 1 mH at 11.5 A, producing a typical clamp voltage of –18 V. Energy dissipation is governed by Pdem = 0.5 × L × I² × [(VCC + Vdemag) / Vdemag] × f; exceeding this limit risks thermal shutdown at switching frequencies above 100 Hz without adequate heatsinking.
Does VN31(011Y) require external components to pass ISO 7637-2 Pulse 5 testing?
No external components are required to meet ISO 7637-2 Pulse 5 Level II (46.5 V). For Level III (61 V), ST specifies a 150 Ω resistor between Pin 1 (GND) and chassis ground plus a 1000 µF capacitor between Pin 3 (VCC) and ground-only when RLOAD ≤ 20 Ω.
How does the open-load diagnostic behave during brief load interruptions?
The STAT output applies 5 ms digital filtering to open-load detection: disconnections shorter than 1 ms do not trigger the fault signal, and reconnections lasting less than 5 ms during an open state do not clear the fault. This prevents false alarms from mechanical vibration or connector micro-breaks.
Can VN31(011Y) drive loads directly from a 24 V truck battery system?
Yes-its VCC range is 5.5–26 V, and absolute maximum VBRDSS is 60 V. It operates reliably across 12 V passenger and 24 V commercial vehicle systems, provided thermal design accommodates higher I²R losses at elevated voltage and current.
VN31(011Y) Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- Pentawatt-5 (Horizontal, Bent and Staggered Leads)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 5.5V ~ 26V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 31A
- Rds On (Typ):
- 30mOhm (Max)
- Input Type:
- Non-Inverting
- Features:
- Status Flag
- Fault Protection:
- Open Load Detect, Over Temperature
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 5-PENTAWATT
VN31(011Y) FAQ
1.How can I place an order for VN31(011Y) through Aetrix?
Please submit a Request for Quotation (RFQ) for VN31(011Y) 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 VN31(011Y) reliable?
The price and inventory of VN31(011Y) are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN31(011Y) is usually 5 days.
3.What payment methods are accepted for VN31(011Y)?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN31(011Y) transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VN31(011Y)?
VN31(011Y) orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VN31(011Y) 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 VN31(011Y)?
For technical support, including VN31(011Y) datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN31(011Y) requirements.
6.How does Aetrix verify that VN31(011Y) is sourced from the original manufacturer or authorized distributors?
All VN31(011Y) 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 VN31(011Y) meets industry standards.
7.What is the process for return or replacement of VN31(011Y)?
All VN31(011Y) units undergo pre-shipment inspection (PSI). If there is an issue with VN31(011Y), 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 VN31(011Y) part is unused and in its original packaging.
Return procedure for VN31(011Y):
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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