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STMicroelectronics VB027SP-E
- Part No.:
- VB027SP-E
- Manufacturer:
- STMicroelectronics
- Package:
- PowerSO-10 Exposed Bottom Pad
- Datasheet:
-
VB027SP-E.pdf
- Description:
- IC PWR DRVR BIPOLAR 1:1 PWRSO10
- Quantity:
- Payment:
- Shipping:
Inventory:4,756
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Product details
Overview
VB027SP-E from STMicroelectronics is a high-voltage ignition coil driver power IC built with VIPower™ vertical Darlington technology, designed for automotive electronic ignition systems. It integrates logic-level input compatibility, internal 300 V collector voltage clamping, 9 A collector current limiting, and dual-threshold diagnostic flagging for coil current monitoring. Used as a smart interface between microcontroller and primary ignition coil.
For engineers reviewing the VB027SP-E datasheet, VB027SP-E pinout, VB027SP-E application, or VB027SP-E equivalent, key selection considerations include its AEC-qualified automotive grade rating, internally set Vcl and Icl thresholds, thermal derating behavior of diagnostic flags, and PowerSO-10 package thermal resistance (Rthj-case = 1.12 °C/W).
Technical Context
The VB027SP-E implements a monolithic high-side Darlington switch with integrated current-sense resistor and dual-threshold diagnostic comparator. Its operation relies on internal desaturation detection to trigger two discrete collector current thresholds (IC(diag1) = 4.5 A typ, IC(diag2) = 5.8 A typ), each with temperature-dependent drift profiles shown in Figures 4 and 5.
Overvoltage protection uses internal Zener clamping at Vcl = 360 V typ, with ±20 V overshoot tolerance during coil flyback. The device features overtemperature detection that shifts IC(diag1) downward by ~1 A above 125 °C, enabling microcontroller-based thermal mitigation without hard shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Vcl | 300 V min clamping voltage ensures safe flyback energy dissipation in 12 V automotive ignition coils. |
| Icl | 9 A max collector current limit prevents coil overheating and supports high-energy spark generation. |
| Id(on) | 130 mA typical supply current during conduction enables low-power controller interfacing. |
| VINH / VINL | 4–5.5 V high-level / 0–0.8 V low-level input thresholds ensure robust logic-level compatibility with MCU GPIOs. |
| Rthj-case | 1.12 °C/W junction-to-case thermal resistance supports >10 W continuous power dissipation with proper heatsinking. |
| td(off) | 25 µs turn-off delay allows precise dwell time control in engine management timing windows. |
| IC(diag1) | 4.5 A first diagnostic threshold triggers early fault warning before reaching full Icl limit. |
Pinout & Package
VB027SP-E is housed in a PowerSO-10 surface-mount package with exposed thermal pad (TAB) for enhanced heat transfer. The package features five parallel GND pins (1–5) for low-inductance emitter return, dedicated signal ground (pin 6), driving stage supply (pin 7), no-connect (pin 8), logic input (pin 9), and diagnostic output (pin 10). The TAB connects directly to the high-voltage collector (HVC) node.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–5 GND | Emitter power ground | Low-impedance return path for high-current coil discharge; must be connected externally to pin 6. |
| 6 GND | Control ground | Reference for logic input and diagnostic output; requires external connection to pins 1–5. |
| 7 Vd | Driving stage supply voltage | 5 V ±0.5 V supply for internal logic and gate drive circuitry. |
| 8 N.C. | No connect | Internally unconnected; must remain floating or grounded per layout guidelines. |
| 9 INPUT | Logic input channel | CMOS-compatible enable signal controlling Darlington conduction state. |
| 10 DIAG | Diagnostic output signal | Open-drain flag indicating IC(diag1) or IC(diag2) crossing; requires external pull-up. |
| TAB HVC | Primary coil output signal | High-voltage collector terminal delivering switched coil current; electrically tied to package thermal pad. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-threshold diagnostic flagging | Two independent current thresholds (4.5 A and 5.8 A) enable progressive fault detection and controlled shutdown. |
| Internally clamped 300 V flyback voltage | Eliminates need for external snubber diodes while maintaining safe operating area during coil de-energization. |
| AEC-Q100 qualified automotive grade | Validated for -40 °C to 150 °C junction operation and automotive transient immunity (±100 V battery line spikes). |
| VIPower™ vertical Darlington architecture | Enables high current density (9 A) and low saturation voltage (1.5 V at 6 A) in compact PowerSO-10 footprint. |
| Thermal derating of diagnostic thresholds | IC(diag1) shifts down ~1 A above 125 °C, providing early thermal warning without disabling functionality. |
Applications
| Gasoline Engine Ignition Control | Motorcycle Electronic Ignition |
|---|---|
|
Use Scenario: Microcontroller-driven dwell time and spark timing in 4-cylinder gasoline engines. IC Role / Device Role / Timing Role: High-side Darlington switch controlling primary coil current; diagnostic flags feed back real-time current status to ECU. Use Value: Enables precise spark energy control via Icl-limited coil charging and eliminates external current sensing components. |
Use Scenario: Compact, vibration-resistant ignition module for single- or twin-cylinder motorcycles. IC Role / Device Role / Timing Role: Logic-level driven high-voltage switch interfacing directly to ignition coil; DIAG pin provides stall/fault indication. Use Value: Reduces BOM count by integrating clamping, current limiting, and diagnostics in one AEC-qualified package. |
| Small Engine Ignition Systems | Aftermarket Ignition Controllers |
|
Use Scenario: Ignition control in lawnmowers, generators, and marine outboard motors with 12 V battery supply. IC Role / Device Role / Timing Role: Primary coil driver with built-in overvoltage and overcurrent protection; withstands harsh environmental transients. Use Value: Survives +100 V/0.2 ms and -100 V/2 ms battery line transients without external protection circuitry. |
Use Scenario: Programmable ignition timing modules used in racing or custom vehicle builds. IC Role / Device Role / Timing Role: High-reliability interface between programmable controller and high-energy ignition coil. Use Value: Dual diagnostic thresholds allow configurable fault response (e.g., soft limiter vs. immediate cutoff) based on engine load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage ignition driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STGD3HF60S | 600 V, 3 A IGBT with separate gate driver; no integrated diagnostics or current limiting. | Requires external current sense, clamping, and fault logic; suitable for higher-voltage but lower-current systems. | Select when >300 V clamping or discrete control architecture is required. |
| BD9882FV | 40 V max Vce, 2 A max Ic; integrated pre-driver only-no high-side Darlington or HV clamp. | Designed for low-voltage DC-DC or motor drivers-not rated for ignition coil flyback voltages. | Not suitable as direct replacement; only for non-ignition, low-voltage switching applications. |
Compared with STGD3HF60S and BD9882FV, the VB027SP-E uniquely combines AEC-qualified 300 V clamping, 9 A current limiting, dual diagnostic flags, and logic-level input in a single PowerSO-10 package-making it purpose-built for automotive and small-engine ignition systems where integration, reliability, and fault visibility are critical.
Availability
VB027SP-E is available at Aetrix Electronics and suitable for gasoline engine ignition control, motorcycle electronic ignition, and small engine ignition systems requiring stable component supply across automotive production and industrial repair channels.
Supply support for VB027SP-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 broad manufacturing and quality certification coverage.
The VB027SP-E belongs to ST's VIPower™ family of intelligent power ICs, engineered specifically for high-reliability automotive actuation-including ignition, fuel injection, and solenoid control-with integrated protection and diagnostic capability.
FAQ
What is the maximum allowable primary coil inductance for stable VB027SP-E operation?
The VB027SP-E is characterized with Lcoil = 7 mH and Rcoil = 510 mΩ per datasheet Table 5 test conditions. Stable operation is confirmed up to 7 mH; higher inductance increases dwell time and thermal stress. For inductances >7 mH, verify td(off) < 25 µs and junction temperature remains ≤150 °C under worst-case ambient and current conditions.
How does the DIAG pin behave during coil current transitions?
The DIAG pin outputs an open-drain signal that goes high when IC exceeds IC(diag1) = 4.5 A and switches low when IC exceeds IC(diag2) = 5.8 A. It has 1 µs delay (td(diag)) and fast edge times (tr/diag, tf/diag ≤ 1 µs), enabling real-time current-state feedback to the controller without external filtering.
Can VB027SP-E drive coils with supply voltages above 13.5 V?
The device operates with VCC up to 16 V per automotive specification, but electrical characteristics (e.g., Vcl, Icl) are guaranteed only at VCC = 13.5 V. At higher VCC, Vcl clamping remains effective, but power dissipation rises linearly-thermal design must accommodate increased Pd = Vce × Ic during saturation and switching.
Is external current sensing required when using VB027SP-E?
No. VB027SP-E incorporates internal current sensing via Rsense and dual-threshold comparators. The DIAG pin provides direct digital feedback of coil current status relative to IC(diag1) and IC(diag2), eliminating need for external shunt resistors, op-amps, or ADC sampling in standard ignition applications.
VB027SP-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- PowerSO-10 Exposed Bottom Pad
- Series:
- VIPower™
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- Low Side
- Output Type:
- Bipolar
- Interface:
- Parallel
- Voltage - Load:
- 4.5V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 8A
- Rds On (Typ):
- -
- Input Type:
- Non-Inverting
- Features:
- Status Flag
- Fault Protection:
- Over Temperature
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-PowerSO
VB027SP-E FAQ
1.How can I place an order for VB027SP-E through Aetrix?
Please submit a Request for Quotation (RFQ) for VB027SP-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 VB027SP-E reliable?
The price and inventory of VB027SP-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VB027SP-E is usually 5 days.
3.What payment methods are accepted for VB027SP-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VB027SP-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VB027SP-E?
VB027SP-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VB027SP-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 VB027SP-E?
For technical support, including VB027SP-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VB027SP-E requirements.
6.How does Aetrix verify that VB027SP-E is sourced from the original manufacturer or authorized distributors?
All VB027SP-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 VB027SP-E meets industry standards.
7.What is the process for return or replacement of VB027SP-E?
All VB027SP-E units undergo pre-shipment inspection (PSI). If there is an issue with VB027SP-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 VB027SP-E part is unused and in its original packaging.
Return procedure for VB027SP-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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