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STMicroelectronics E-L6571BD013TR
- Part No.:
- E-L6571BD013TR
- Manufacturer:
- STMicroelectronics
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
E-L6571BD013TR.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,089
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Product details
Overview
E-L6571BD013TR from STMicroelectronics is a high-voltage half-bridge gate driver IC with integrated oscillator, designed to drive external N-channel MOSFETs and IGBTs in resonant or hard-switched topologies. It features 600 V high-side floating supply capability, 0.72 μs typical internal dead time (L6571B variant), ±50 V/ns dV/dt immunity, and programmable oscillator frequency via external RF/CF. Used in compact AC-DC adapters and offline SMPS.
For engineers reviewing the E-L6571BD013TR datasheet, E-L6571BD013TR pinout, E-L6571BD013TR application, or E-L6571BD013TR equivalent, key selection criteria include bootstrap-based high-side drive capability, undervoltage lockout hysteresis (1 V), Zener-clamped VS rail (15.6 V typ.), sink/source current asymmetry (270 mA/170 mA), and SO-8 tape-and-reel packaging for automated assembly.
Technical Context
The device integrates a self-oscillating timing circuit whose frequency (200 kHz max) is set by external RF and CF, while also accepting external logic signals on CF pin for synchronous control. Internal logic enforces fixed dead time (0.72 μs typ.) between high- and low-side outputs to prevent shoot-through.
High-side drive operates from a bootstrap capacitor referenced to OUT, supporting up to 618 V VBOOT and ±50 V/ns slew rate immunity. The VS pin includes an internal 15.6 V Zener clamp, requiring current-limited biasing - not direct connection to low-impedance DC rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max VBOOT | 618 V - supports high-voltage half-bridge operation up to 600 V DC bus |
| Dead time | 0.72 μs (typ.) - fixed internal delay prevents cross-conduction in power stage |
| Driver sink/source | 270 mA sink / 170 mA source - sufficient gate drive for ≤1 nF MOSFET/IGBT gates at 60 kHz |
| VS clamp voltage | 15.6 V (typ.) - internal Zener protects bias rail; requires current-limiting resistor |
| dV/dt immunity | ±50 V/ns - robust against fast transient coupling in high-noise SMPS environments |
| Startup current | 150 μA (max) - enables low-power auxiliary supply design without dedicated startup circuit |
| Oscillator range | 200 kHz (max) - suitable for compact flyback and resonant LLC converters |
Pinout & Package
Package: SO-8 (Small Outline, 150 °C/W junction-to-ambient thermal resistance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VS) | Clamped supply input | Internal 15.6 V Zener reference; must be current-limited to avoid damage |
| 2 (RF) | Oscillator timing resistor node | Buffers external RF; can drive secondary ICs (e.g., second L6571 for full bridge) |
| 3 (CF) | Oscillator timing capacitor / sync input | Accepts external CF or logic-level shutdown signal (low = LS on, HS off) |
| 4 (GND) | Power ground reference | Common return for low-side driver and oscillator circuitry |
| 5 (LVG) | Low-side gate driver output | 170 mA source / 270 mA sink; drives N-MOSFET gate directly |
| 6 (OUT) | High-side floating reference | Source node of high-side switch; boot capacitor connects between BOOT and OUT |
| 7 (HVG) | High-side gate driver output | 170 mA source / 270 mA sink; referenced to OUT, not GND |
| 8 (BOOT) | Bootstrap supply input | Charged via diode during LS conduction; supplies HVG stage during HS conduction |
Key Features
| Feature | Design Value |
|---|---|
| Integrated oscillator | Programmable 200 kHz max via RF/CF; eliminates need for external clock generator |
| Bootstrap-compatible high-side drive | Supports 618 V VBOOT and ±50 V/ns dV/dt - enables cost-effective high-voltage half-bridge without level shifters |
| UVLO with hysteresis | 9.0 V turn-on / 8.0 V turn-off (1 V hysteresis) - prevents erratic switching during brown-out conditions |
| Low start-up current | 150 μA - allows use of high-value startup resistors, reducing standby power loss |
| ESD protection | 900 V HBM on pins 6–8 - improves handling robustness during PCB assembly |
Applications
| Compact AC-DC Adapters | LED Driver Power Stages |
|---|---|
|
Use Scenario: 12 W–30 W isolated flyback converter with primary-side regulation. IC Role / Device Role / Timing Role: Half-bridge driver controlling QR flyback MOSFET; oscillator sets switching frequency at 60–100 kHz. Use Value: Integrated oscillator and bootstrap drive reduce BOM count by 3–4 components versus discrete gate driver + clock IC solutions. |
Use Scenario: Constant-current LED driver for commercial lighting using buck-boost topology. IC Role / Device Role / Timing Role: High-side gate driver for N-channel MOSFET in high-side buck configuration; UVLO ensures safe restart after overvoltage fault. Use Value: 15.6 V VS clamp and 0.72 μs dead time enable stable operation with minimal external protection components. |
| Industrial SMPS Modules | Appliance Motor Control |
|
Use Scenario: 48 V input, 12 V/5 A industrial DC-DC module with synchronous rectification. IC Role / Device Role / Timing Role: Dual-driver for half-bridge in active clamp forward topology; CF pin used for external synchronization. Use Value: ±50 V/ns dV/dt immunity maintains reliable timing under high EMI conditions common in factory-floor power systems. |
Use Scenario: Brushless DC motor driver in HVAC blower or washing machine pump. IC Role / Device Role / Timing Role: Gate driver for 3-phase inverter half-bridge legs; low 150 μA startup current reduces no-load consumption. Use Value: SO-8 package and tape-and-reel delivery support automated SMT placement in high-volume appliance manufacturing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage half-bridge driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IR21531PBF | No integrated oscillator; requires external RC or crystal timing; higher 600 mA peak drive | Better suited for designs needing precise frequency stability or >200 kHz operation | Select when external clock synchronization or higher gate drive strength is required |
| UCC27712DR | 600 V high-side rating but no internal oscillator; 4 A peak drive; faster propagation delay (<100 ns) | Targeted at high-frequency GaN or SiC half-bridges where timing precision dominates | Choose for >300 kHz resonant converters or GaN-based designs demanding sub-100 ns timing control |
Compared with IR21531PBF and UCC27712DR, E-L6571BD013TR trades higher peak drive and timing flexibility for integration simplicity - its built-in oscillator, Zener-clamped VS, and 0.72 μs dead time make it optimal for cost-sensitive, medium-frequency offline SMPS where component count reduction is critical.
Availability
E-L6571BD013TR is available at Aetrix Electronics and suitable for compact AC-DC adapters, LED driver power stages, and industrial SMPS modules requiring stable component supply, consistent SO-8 tape-and-reel delivery, and long-term lifecycle support.
Supply support for E-L6571BD013TR 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 power management, analog, microcontrollers, and automotive-grade ICs.
E-L6571BD013TR belongs to ST's high-voltage gate driver product line, engineered specifically for cost-optimized, self-oscillating offline power conversion in consumer and industrial applications up to 600 V.
FAQ
What is the function of the VS pin and how should it be biased?
The VS pin supplies internal circuitry and features a 15.6 V Zener clamp. It must be driven through a current-limiting resistor - direct connection to a low-impedance DC rail risks exceeding the 25 mA absolute maximum supply current and damaging the clamp. Typical bias uses a 100 kΩ–1 MΩ resistor from bulk DC to VS, sized to deliver ~1 mA at startup.
Can the E-L6571BD013TR drive both MOSFETs and IGBTs?
Yes - its 270 mA sink / 170 mA source capability and 14.6 V LVG/HVG output swing are compatible with standard N-channel MOSFETs and IGBTs having gate thresholds below 5 V. For IGBTs with higher gate charge, ensure gate resistor values limit peak current within the driver's 270 mA sink limit during turn-off.
How is oscillator frequency programmed, and what is the minimum external component value?
Frequency is set by RF (pin 2) and CF (pin 3) per fosc ≈ 1/(RF × CF). With RF = 12 kΩ and CF = 1 nF, typical fosc = 60 kHz. Minimum recommended CF is 100 pF to ensure stable oscillation; smaller values increase sensitivity to noise and layout parasitics.
What happens if the CF pin is pulled low externally?
Pulling CF low forces shutdown mode: the low-side driver remains ON while the high-side driver stays OFF. This state is used for fault recovery or soft-start control. However, forced discharge of CF must exceed 1 μs duration - achieved by limiting discharge current with R × CF > 1 μs - to avoid unintended oscillation or latch-up.
E-L6571BD013TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Synchronous
- Number of Drivers:
- 2
- Gate Type:
- IGBT, N-Channel MOSFET
- Voltage - Supply:
- 10V ~ 16.6V
- Logic Voltage - VIL, VIH:
- -
- Current - Peak Output (Source, Sink):
- 170mA, 270mA
- Input Type:
- RC Input Circuit
- High Side Voltage - Max (Bootstrap):
- 600 V
- Rise / Fall Time (Typ):
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
E-L6571BD013TR FAQ
1.How can I place an order for E-L6571BD013TR through Aetrix?
Please submit a Request for Quotation (RFQ) for E-L6571BD013TR 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 E-L6571BD013TR reliable?
The price and inventory of E-L6571BD013TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for E-L6571BD013TR is usually 5 days.
3.What payment methods are accepted for E-L6571BD013TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for E-L6571BD013TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for E-L6571BD013TR?
E-L6571BD013TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your E-L6571BD013TR 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 E-L6571BD013TR?
For technical support, including E-L6571BD013TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your E-L6571BD013TR requirements.
6.How does Aetrix verify that E-L6571BD013TR is sourced from the original manufacturer or authorized distributors?
All E-L6571BD013TR 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 E-L6571BD013TR meets industry standards.
7.What is the process for return or replacement of E-L6571BD013TR?
All E-L6571BD013TR units undergo pre-shipment inspection (PSI). If there is an issue with E-L6571BD013TR, 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 E-L6571BD013TR part is unused and in its original packaging.
Return procedure for E-L6571BD013TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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