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STMicroelectronics L6571BD013TR
- Part No.:
- L6571BD013TR
- Manufacturer:
- STMicroelectronics
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
L6571BD013TR.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,162
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Product details
Overview
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, programmable oscillator frequency (up to 200 kHz), 0.72 μs internal dead time (L6571B variant), ±50 V/ns dV/dt immunity, and 15.6 V Zener clamp on VS - used in compact AC-DC SMPS and electronic ballasts.
For engineers reviewing the L6571BD013TR datasheet, L6571BD013TR pinout, L6571BD013TR application, or L6571BD013TR equivalent, key selection criteria include bootstrap-based high-side drive capability, undervoltage lockout hysteresis (1 V), sink/source current specs (270 mA/170 mA), and SO-8 tape-and-reel availability for automated assembly.
Technical Context
The device integrates a self-oscillating timing circuit whose frequency is set by external RF and CF, supporting both free-running and externally synchronized operation via the CF pin. Internal logic enforces fixed dead time between high- and low-side outputs to prevent shoot-through during power switch transitions.
High-side drive operates from a bootstrap capacitor referenced to the OUT node, enabling operation with VBOOT up to 618 V and dVBOOT/dt tolerance of ±50 V/ns. The VS pin includes a 15.6 V Zener clamp and UVLO with 1 V hysteresis, ensuring robust start-up and brown-out protection.
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 (typ.) | 0.72 μs - fixed internal delay prevents cross-conduction in MOSFET/IGBT pairs |
| Oscillator freq. range | 200 kHz max - programmable via external RF/CF for flexible switching frequency tuning |
| Driver sink/source | 270 mA sink / 170 mA source - sufficient gate drive strength for fast turn-on/turn-off of power devices |
| dV/dt immunity | ±50 V/ns - ensures reliable operation under fast transient voltage conditions at high-side node |
| VS clamp voltage | 15.6 V (typ.) - internal Zener protects logic supply from overvoltage during startup or fault |
| UVLO hysteresis | 1 V (typ.) - provides stable enable/disable threshold with noise margin against supply ripple |
Pinout & Package
Package: SO-8 (Small Outline Integrated Circuit, 8-pin, surface-mount). Compliant with ECOPACK® environmental specifications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VS) | Clamped supply input | 15.6 V Zener-clamped rail for internal logic; requires external decoupling |
| 2 (RF) | Oscillator resistor interface | Buffers external timing resistor; can also drive secondary ICs in multi-driver systems |
| 3 (CF) | Oscillator capacitor / sync input | Accepts external timing capacitor or logic-level sync signal for forced oscillation control |
| 4 (GND) | Ground reference | Common return for low-side driver and logic circuitry; separate from power ground paths |
| 5 (LVG) | Low-side gate driver output | 170 mA source / 270 mA sink capability drives N-MOSFET gate directly |
| 6 (OUT) | High-side floating reference | Connects to source of high-side N-MOSFET; defines return path for HVG output |
| 7 (HVG) | High-side gate driver output | Drives gate of high-side N-MOSFET relative to OUT; bootstrapped supply required |
| 8 (BOOT) | Bootstrap supply input | Charged via diode/capacitor from VS; supplies high-side driver stage up to 618 V |
Key Features
| Feature | Design Value |
|---|---|
| Integrated oscillator | Programmable frequency (200 kHz max) eliminates need for external clock generator |
| Bootstrap high-side drive | Supports 600 V bridge operation without isolated supply; reduces BOM count and layout complexity |
| Fixed dead-time logic | 0.72 μs (L6571B) prevents simultaneous conduction - no external timing components needed |
| High dV/dt immunity | ±50 V/ns tolerance enables stable operation in noisy high-voltage switching environments |
| Low start-up current | 150 μA typical - minimizes power loss during initial charge of bootstrap capacitor |
Applications
| Compact Fluorescent Lamp (CFL) Ballast | LED Driver with Resonant Topology |
|---|---|
|
Use Scenario: Driving half-bridge in self-oscillating electronic ballast for 11–40 W CFL lamps. IC Role / Device Role / Timing Role: Half-bridge gate driver with built-in oscillator sets lamp ignition and run frequency (~50–70 kHz). Use Value: Eliminates external timing IC and reduces component count while maintaining precise dead-time control for safe lamp operation. |
Use Scenario: Controlling LLC resonant converter in constant-current LED drivers for street lighting. IC Role / Device Role / Timing Role: High-voltage half-bridge driver synchronizes MOSFET switching with resonant tank behavior using programmable oscillator. Use Value: Enables efficient zero-voltage switching (ZVS) across load range with minimal gate drive losses and EMI. |
| AC-DC Adapter with PFC + LLC Stage | Induction Heating Half-Bridge |
|
Use Scenario: Secondary-side half-bridge in LLC resonant DC-DC stage of universal-input 65 W adapter. IC Role / Device Role / Timing Role: Gate driver with bootstrap supply and 0.72 μs dead time ensures clean switching of 600 V GaN FETs. Use Value: Supports high-frequency operation (>150 kHz) with low propagation delay and tight timing control for efficiency optimization. |
Use Scenario: Driving 20–50 kHz half-bridge in domestic induction cooktops using discrete IGBTs. IC Role / Device Role / Timing Role: High-current gate driver with ±50 V/ns dV/dt immunity withstands rapid voltage transients during coil current reversal. Use Value: Prevents false triggering and shoot-through under harsh EMI conditions common in high-power induction loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar half-bridge gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IR2153(D)(S) | Fixed 50% duty cycle; no programmable oscillator; 600 V rating; lower sink current (200 mA) | Lacks frequency programming and adjustable dead time; suited for fixed-frequency flyback or push-pull | Select when cost sensitivity outweighs flexibility needs and system timing is fixed |
| UCC27201A | No integrated oscillator; 120 V max VBS; higher peak current (4 A); requires external PWM controller | Designed for synchronous buck or motor control; not suitable for bootstrap-based 600 V bridges | Choose only if external controller exists and high-speed, high-current drive is prioritized over integration |
Compared with IR2153D and UCC27201A, L6571BD013TR uniquely combines oscillator programmability, 600 V bootstrap capability, and fixed dead time in SO-8 - making it optimal for cost-sensitive, self-oscillating half-bridge SMPS where integration reduces board area and BOM count.
Availability
L6571BD013TR is available at Aetrix Electronics and suitable for compact fluorescent ballasts, resonant LED drivers, and AC-DC adapters requiring stable component supply, consistent SO-8 tape-and-reel delivery, and long-term industrial lifecycle support.
Supply support for 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, delivering innovative solutions across automotive, industrial, power, and analog markets since 1987.
L6571BD013TR belongs to ST's high-voltage analog & power IC portfolio, engineered specifically for cost-effective, self-contained half-bridge driver applications in lighting and offline power conversion.
FAQ
What is the function of the RF and CF pins on L6571BD013TR?
Pin 2 (RF) connects to an external resistor that sets oscillator frequency alongside CF; it also buffers current to drive additional ICs. Pin 3 (CF) accepts an external timing capacitor or logic-level sync signal - enabling either self-oscillation or external control of switching timing without modifying hardware.
Can L6571BD013TR drive IGBTs directly?
Yes - its 270 mA sink and 170 mA source gate drive capability meets typical IGBT gate charge requirements for devices up to ~30 A rated current. The 0.72 μs dead time and ±50 V/ns dV/dt immunity further ensure safe commutation in hard-switched IGBT half-bridges.
How does the VS pin Zener clamp protect the IC?
The internal 15.6 V Zener on VS limits voltage applied to internal logic during startup surges or bootstrap charging transients. This eliminates need for external clamping diodes and prevents latch-up or damage when VS is driven from unregulated sources like rectified mains.
Is L6571BD013TR pin-compatible with L6571AD013TR?
Yes - both share identical SO-8 package, pinout, and electrical characteristics except for internal dead time (0.72 μs vs. 1.25 μs). No PCB redesign is needed when substituting between L6571B and L6571A variants for frequency or timing optimization.
L6571BD013TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
L6571BD013TR FAQ
1.How can I place an order for L6571BD013TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 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 L6571BD013TR reliable?
The price and inventory of L6571BD013TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6571BD013TR is usually 5 days.
3.What payment methods are accepted for L6571BD013TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6571BD013TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for L6571BD013TR?
L6571BD013TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 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 L6571BD013TR?
For technical support, including L6571BD013TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6571BD013TR requirements.
6.How does Aetrix verify that L6571BD013TR is sourced from the original manufacturer or authorized distributors?
All 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 L6571BD013TR meets industry standards.
7.What is the process for return or replacement of L6571BD013TR?
All L6571BD013TR units undergo pre-shipment inspection (PSI). If there is an issue with 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 L6571BD013TR part is unused and in its original packaging.
Return procedure for L6571BD013TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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