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STMicroelectronics VB326SP13TR
- Part No.:
- VB326SP13TR
- Manufacturer:
- STMicroelectronics
- Package:
- PowerSO-10 Exposed Bottom Pad
- Datasheet:
-
VB326SP13TR.pdf
- Description:
- IC PWR DRVR BIPOLAR 1:1 PWRSO10
- Quantity:
- Payment:
- Shipping:
Inventory:2,251
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Product details
Overview
VB326SP13TR from STMicroelectronics is a high-voltage ignition coil driver IC built on VIPower™ M1-3 technology, featuring vertical Darlington output stage, logic-level input compatibility, internally set 360 V collector clamp voltage, 10 A coil current limit, and thermal shutdown at 150 °C. It serves as a smart interface between microcontroller and primary ignition coil in electronic ignition systems.
For engineers reviewing the VB326SP13TR datasheet, VB326SP13TR pinout, VB326SP13TR application, or VB326SP13TR equivalent, key selection criteria include high-voltage clamping (320–420 V), quasi-proportional base drive, low-voltage clamp during overtemperature, open-emitter diagnostic flag output, and PowerSO-10™ package thermal performance (Rthj-case = 1 °C/W).
Technical Context
The VB326SP13TR integrates a vertically structured power Darlington with embedded current-limiting and voltage-clamping protection. Its enable pin allows external blocking of the switch while input remains active, and its diagnostic flag outputs high when coil current exceeds 6.5 A - a threshold stable across temperature (±0.35 A drift).
Operation relies on internal sensing of collector current to regulate dwell time and initiate controlled turn-off. During desaturation, the device self-clamps primary coil voltage to ≤420 V and activates low-voltage clamp (30–50 V) if junction temperature reaches thermal shutdown (150 °C), preventing uncontrolled spark generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Collector Clamp Voltage (Vcl) | 320–420 V - limits primary coil flyback voltage to protect downstream circuitry and ensure repeatable spark energy. |
| Coil Current Limit (Icl) | 9–11 A - sets maximum dwell current for consistent ignition timing and coil saturation without overheating. |
| Thermal Shutdown Threshold | 150 °C - triggers safe current reduction before silicon damage, enabling robust operation in under-hood environments. |
| Flag Output Threshold | 6.15–6.85 A - provides real-time coil current monitoring via open-emitter signal synchronized to ignition event timing. |
| Turn-off Time (tOFF) | 15–25 µs - ensures rapid coil de-energization for precise spark timing control in high-RPM engine applications. |
| Power Dissipation (Tc=25°C) | 125 W - supports high-energy ignition pulses with externally heatsinked PowerSO-10™ package. |
| ESD Rating (HVC pin) | ±4 kV - withstands automotive-level electrostatic discharge during handling and assembly. |
Pinout & Package
VB326SP13TR is housed in PowerSO-10™ package - a surface-mount, thermally enhanced 10-pin power package with exposed metal tab for direct heatsinking. Pin 1–5 are LGND (signal ground); Pins 2–4 and Pin 5 must be externally shorted to Pins 1 and 5 per layout guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,5 LGND | Signal Ground Reference | Low-noise reference for internal logic and diagnostic circuitry; must be externally connected to Pins 2–4. |
| 2–4 GND | Emitter Power Ground | High-current return path for coil current; requires low-inductance PCB routing and thermal connection to heatsink. |
| 6 E | Enable Input | Active-low enable: grounding disables output regardless of INPUT state; floating forces OFF condition. |
| 7 VCC | Logic Supply | 5 V ±10% supply for internal driver circuitry; decoupling capacitor required near pin. |
| 8 BD | Darlington Base Drive | Internally generated quasi-proportional base current - eliminates need for external base resistor network. |
| 9 INPUT | Logic-Level Input | CMOS-compatible input with internal pull-down; ≥4 V enables coil charging, ≤0.8 V initiates turn-off. |
| 10 FLAG | Diagnostic Output | Open-emitter flag asserting high when Icoil > 6.5 A; requires external pull-up for logic-level interfacing. |
| TAB HVC | High-Voltage Collector Output | Main switching node connected to ignition coil primary; electrically isolated from package tab for safe mounting. |
Key Features
| Feature | Design Value |
|---|---|
| Internally Set Coil Current Limit | 9–11 A tolerance across -40 to +125 °C - eliminates external sense resistor and calibration, reducing BOM count and layout complexity. |
| Self-Clamped Inductive Switching | 360 V typical clamp with 275 mJ single-pulse avalanche energy rating - sustains repeated high-energy coil discharges without external snubber. |
| Low-Voltage Clamp During Overtemperature | 30–50 V clamping activated at Tj = 150 °C - prevents uncontrolled secondary spark while maintaining system diagnostics. |
| Quasi-Proportional Base Drive | Base current scales with collector current - improves efficiency and reduces thermal stress vs. fixed-base-drive topologies. |
| Integrated Diagnostic Flag | Current-threshold-triggered open-emitter output with ±0.35 A tempco - enables real-time coil health monitoring and misfire detection. |
Applications
| Automotive Ignition Control | Motorcycle Electronic Ignition |
|---|---|
|
Use Scenario: Microcontroller-driven dwell control and spark timing in 4-cylinder gasoline engines with distributorless ignition systems. IC Role / Device Role / Timing Role: High-side primary coil driver with integrated current regulation and thermal protection. Use Value: Enables precise dwell time adjustment across battery voltage range (5.3–24 V) and ambient temperatures (-40 to +125 °C) without external compensation. |
Use Scenario: Compact, high-reliability ignition module for dual-spark motorcycle engines operating in vibration-prone environments. IC Role / Device Role / Timing Role: Smart coil interface with diagnostic flag feedback for ECU-based misfire detection. Use Value: Reduces component count by integrating current limiting, voltage clamping, and thermal shutdown - critical for space-constrained designs. |
| Small Engine Ignition Systems | Aftermarket Ignition Modules |
|
Use Scenario: Solid-state replacement for mechanical breaker points in lawnmowers, generators, and marine outboard motors. IC Role / Device Role / Timing Role: Logic-level-controlled high-voltage switch with built-in overvoltage and overtemperature protection. Use Value: Eliminates contact wear and timing drift; withstands battery transients up to +100 V/0.2 ms and -100 V/2 ms. |
Use Scenario: Programmable ignition controller upgrade kits requiring plug-and-play integration with legacy coil hardware. IC Role / Device Role / Timing Role: Drop-in compatible driver supporting both OEM and custom coil inductance (3.75 mH typical). Use Value: Simplifies redesign with validated electrical interface (VCC=5 V, INPUT=CMOS, FLAG=open-emitter) and known thermal profile (Rthj-case=1 °C/W). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage ignition coil driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STGD3HF60L | 600 V MOSFET-based driver with external current sense; no integrated clamp or thermal shutdown. | Requires external gate driver, sense resistor, and protection circuitry - higher design effort but greater flexibility in coil energy tuning. | Choose when programmable current limit or variable clamp voltage is required; not suitable for cost-sensitive or space-constrained modules. |
| UC2907DW | Analog PWM controller with external N-channel MOSFET drive; no integrated power stage or diagnostic flag. | Needs discrete high-side switch and current-sense amplifier; lacks built-in fault reporting or thermal foldback. | Prefer for multi-coil systems where centralized timing control and independent channel modulation are needed. |
Compared with STGD3HF60L and UC2907DW, VB326SP13TR delivers fully integrated protection, diagnostic feedback, and thermal management in a single PowerSO-10™ package - reducing bill-of-materials, PCB area, and validation effort for dedicated single-coil ignition applications.
Availability
VB326SP13TR is available at Aetrix Electronics and suitable for automotive ignition control, motorcycle electronic ignition, and small-engine ignition systems requiring stable component supply and long-term lifecycle support.
Supply support for VB326SP13TR 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, designing and manufacturing analog, mixed-signal, power, and microcontroller solutions for automotive, industrial, and consumer markets.
The VB326SP belongs to ST's VIPower™ family of intelligent power ICs, engineered specifically for high-reliability, high-energy automotive and industrial switching applications where integration of protection, diagnostics, and thermal resilience is critical.
FAQ
What is the function of the ENABLE pin on VB326SP13TR?
The ENABLE pin (Pin 6) is an active-low control input that overrides the INPUT signal: when grounded, it forces the output OFF regardless of INPUT state; when left floating, it defaults to OFF. This provides fail-safe disable capability for safety-critical ignition sequencing and allows external watchdog or ECU supervision of driver activation.
Does VB326SP13TR require an external current-sense resistor?
No. VB326SP13TR implements internal current sensing and limiting - the 9–11 A coil current threshold is set and trimmed during manufacture. No external sense resistor is needed, simplifying layout and eliminating associated power loss, calibration drift, and board space requirements.
How does the FLAG output behave during normal operation?
The FLAG pin (Pin 10) is an open-emitter output that goes high (pulls up via external resistor) when coil current exceeds 6.5 A, and returns low when current falls below threshold. It remains asserted until INPUT transitions low, providing precise dwell completion indication for ECU timing synchronization and misfire detection.
Can VB326SP13TR drive coils with inductance values outside 3.75 mH?
Yes - the datasheet specifies operation with Lcoil = 3.75 mH, but electrical characteristics (e.g., tON, tOFF, clamp energy) are validated across 1–6 mH per Figure 2 and Figure 6. For non-standard inductances, verify single-pulse avalanche energy (Es/b ≥ 180 mJ) and thermal margin using actual load conditions.
VB326SP13TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- PowerSO-10 Exposed Bottom Pad
- Series:
- VIPower™
- Packaging:
- Tape & Reel (TR)
- 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:
- 30V (Max)
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Current - Output (Max):
- 11A
- 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
VB326SP13TR FAQ
1.How can I place an order for VB326SP13TR through Aetrix?
Please submit a Request for Quotation (RFQ) for VB326SP13TR 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 VB326SP13TR reliable?
The price and inventory of VB326SP13TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VB326SP13TR is usually 5 days.
3.What payment methods are accepted for VB326SP13TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VB326SP13TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VB326SP13TR?
VB326SP13TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VB326SP13TR 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 VB326SP13TR?
For technical support, including VB326SP13TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VB326SP13TR requirements.
6.How does Aetrix verify that VB326SP13TR is sourced from the original manufacturer or authorized distributors?
All VB326SP13TR 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 VB326SP13TR meets industry standards.
7.What is the process for return or replacement of VB326SP13TR?
All VB326SP13TR units undergo pre-shipment inspection (PSI). If there is an issue with VB326SP13TR, 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 VB326SP13TR part is unused and in its original packaging.
Return procedure for VB326SP13TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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