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STMicroelectronics E-L6598D013TR
- Part No.:
- E-L6598D013TR
- Manufacturer:
- STMicroelectronics
- Category:
- AC DC Converters, Offline Switches
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
E-L6598D013TR.pdf
- Description:
- IC OFFLINE SW HALF-BRIDGE 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,044
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Product details
Overview
E-L6598D013TR from STMicroelectronics is a high-voltage resonant controller IC designed for half-bridge LLC and series-resonant AC/DC power supplies. It integrates high-side and low-side gate drivers (450 mA sink / 250 mA source), a current-controlled oscillator (60–120 kHz soft-start, 58–62 kHz min), undervoltage lockout (10.7 V turn-on), and an integrated bootstrap diode - enabling compact 600 V-rated adapter designs with minimal external components.
For engineers reviewing the E-L6598D013TR datasheet, E-L6598D013TR pinout, E-L6598D013TR application in resonant SMPS, or E-L6598D013TR equivalent for half-bridge control, this device delivers dV/dt immunity of ±50 V/ns, 80/40 ns rise/fall times (1 nF load), and Zener-clamped Vs rail - critical for reliable operation in noisy offline environments.
Technical Context
The L6598 employs BCD™ offline technology to support 600 V floating supply (VBOOT) and withstand ±50 V/ns dV/dt transients across its full −40 °C to +125 °C operating range. Its dual CMOS enable inputs (EN1 latched shutdown at 0.6 V, EN2 soft-start restart at 1.2 V) provide robust fault recovery without external logic.
The timing section implements frequency-shifting soft-start via CSS ramping, where ISS charges CSS to linearly reduce oscillator current from Ifstart to Ifmin - enabling controlled startup without inrush stress. The integrated op amp (GBW = 1 MHz, Vio = ±10 mV) supports closed-loop current-mode control by modulating Rfmin with feedback voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max VBOOT | 618 V - supports 600 V-class MOSFETs in high-line AC/DC applications |
| dV/dt immunity | ±50 V/ns - prevents false triggering during fast transient events in resonant converters |
| Driver sink/source | 450 mA sink / 250 mA source - ensures <120 ns rise time driving 1 nF gate load |
| fmin / fstart | 58–62 kHz / 114–126 kHz - programmable via Rfmin/Rfstart/Cf for optimized light-load efficiency |
| Vs UVLO threshold | 10.7 V turn-on, 8.0 V turn-off - provides 2.7 V hysteresis for stable startup under brownout |
| Op amp GBW | 0.5–1 MHz - enables stable compensation of current-loop bandwidth up to ~100 kHz |
| Deadtime | 0.2–0.35 µs - prevents shoot-through in half-bridge while maintaining high duty-cycle capability |
Pinout & Package
Available in SO16N (small-outline 16-pin) package per ECOPACK® environmental compliance. Pin layout optimized for high-voltage isolation and thermal dissipation in offline power stages.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CSS) | Soft-start timing capacitor node | Charged by internal ISS current to generate linear frequency ramp during startup |
| 2 (Rfstart) | Soft-start frequency setting input | Low-impedance voltage source sets initial oscillator current (Ifstart = VREF/Rfstart) |
| 3 (Cf) | Oscillator timing capacitor | Forms RC network with Rfmin/Rfstart to define switching frequency (f ≈ 1.41/(R·C)) |
| 5 (OPout) | Sense op amp output | Low-impedance drive for closed-loop frequency modulation or overcurrent protection |
| 11 (LVG) | Low-side gate driver output | Drives N-channel MOSFET source-connected to GND; synchronized with bootstrap charging |
| 14 (OUT) | High-side reference node | Provides floating return path for HVG; clamped internally to avoid negative swing beyond −1 V |
| 15 (HVG) | High-side gate driver output | Drives N-channel MOSFET source-connected to resonant tank; referenced to OUT |
| 16 (VBOOT) | Bootstrap supply input | Charged via integrated DMOS+diode structure during LVG on-time; sustains HVG operation |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bootstrap diode | Replaces external HV fast-recovery diode, reducing BOM count and PCB area in SO16N layout |
| Zener clamping on Vs | 15.6 V internal clamp limits supply rail to safe level, eliminating need for external TVS |
| Programmable deadtime | Fixed 0.27 µs typical ensures cross-conduction prevention without external timing resistors |
| Two enable inputs | EN1 (latched shutdown) and EN2 (soft-start restart) enable hierarchical fault management |
| Current-controlled oscillator | Frequency accuracy ±3% over temperature enables precise resonant tank tuning without trimming |
Applications
| Server PSU | LED Driver |
|---|---|
|
Use Scenario: 1 kW resonant server power supply operating from 90–264 VAC input with >94% efficiency. IC Role / Device Role / Timing Role: Half-bridge resonant controller managing LLC topology timing, gate drive, and overcurrent protection. Use Value: Integrated bootstrap diode and 600 V VBOOT rating eliminate external HV diode and simplify primary-side layout. |
Use Scenario: Constant-current LED driver for street lighting with wide input range and dimming interface. IC Role / Device Role / Timing Role: Resonant controller regulating output current via op amp feedback to Rfmin pin. Use Value: Sense op amp (1 MHz GBW, ±10 mV offset) enables stable current loop response across 10:1 dimming range. |
| Laptop Adapter | Industrial Charger |
|
Use Scenario: 65 W ultra-thin laptop adapter requiring high power density and low no-load consumption. IC Role / Device Role / Timing Role: High-voltage resonant controller implementing frequency-shifted soft-start and burst-mode light-load control. Use Value: Soft-start timing constant (0.15 s/µF) ensures inrush current <1 A with 330 nF CSS capacitor. |
Use Scenario: 300 W industrial battery charger with universal AC input and thermal foldback protection. IC Role / Device Role / Timing Role: Fault-tolerant resonant controller using EN1 latched shutdown and EN2 restart for overtemperature recovery. Use Value: ±50 V/ns dV/dt immunity maintains stable operation in electrically noisy factory environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage resonant controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC256301 | Higher integration: includes PFC controller, digital frequency control, and adaptive deadtime | Targeted at integrated PFC+LLC systems; requires firmware configuration | Choose when combining PFC and resonant control reduces system cost and footprint |
| IR21531 | Analog oscillator only; no soft-start, no op amp, no integrated bootstrap diode | Used in simpler fixed-frequency half-bridge inverters without closed-loop regulation | Choose for cost-sensitive, non-resonant applications where frequency stability is less critical |
Compared with UCC256301, E-L6598D013TR offers analog simplicity and proven reliability in mature resonant designs; compared with IR21531, it adds essential features like soft-start, protection comparators, and integrated bootstrap - reducing design risk in high-efficiency AC/DC adapters.
Availability
E-L6598D013TR is available at Aetrix Electronics and suitable for server PSUs, LED drivers, and laptop adapters requiring stable component supply, long-term manufacturability, and RoHS-compliant SO16N packaging.
Supply support for E-L6598D013TR 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 specializing in power management, analog, and microcontroller technologies for industrial, automotive, and consumer markets.
The L6598 product line targets high-efficiency offline resonant power conversion - specifically engineered to simplify half-bridge LLC and series-resonant SMPS designs with integrated gate drive, timing, and protection functions.
FAQ
What is the maximum recommended switching frequency for E-L6598D013TR?
The datasheet specifies a maximum switching frequency of 400 kHz under recommended operating conditions. However, practical use is limited to ≤200 kHz due to bootstrap driver voltage drop scaling with frequency and MOSFET gate charge - at 200 kHz with 30 nC Qg, the drop reaches ~2.6 V, impacting high-side drive strength and efficiency.
Can E-L6598D013TR drive IGBTs directly?
Yes - the high-side and low-side drivers deliver 450 mA sink and 250 mA source into 1 nF load, sufficient for most 30–60 A IGBTs used in resonant topologies. However, gate resistor selection must ensure turn-on/turn-off times remain within the 0.27 µs deadtime window to prevent shoot-through.
How does the integrated bootstrap diode affect PCB layout?
The integrated bootstrap diode eliminates the need for an external HV fast-recovery diode between LVG and VBOOT, reducing component count and simplifying routing. Layout must still maintain tight coupling between LVG, VBOOT, and the external bootstrap capacitor to minimize parasitic inductance and ringing.
Is E-L6598D013TR qualified for automotive applications?
No - ST explicitly states L6598 devices are not designed or authorized for automotive, safety-critical, or aerospace applications. They are rated for industrial and commercial use only, with operating ambient temperature up to +125 °C but no AEC-Q100 qualification or automotive-grade screening.
E-L6598D013TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Isolation:
- Isolated
- Internal Switch(s):
- No
- Voltage - Breakdown:
- -
- Topology:
- Half-Bridge
- Voltage - Start Up:
- 10.7 V
- Voltage - Supply (Vcc/Vdd):
- 8V ~ 16.6V
- Duty Cycle:
- 50%
- Frequency - Switching:
- 400kHz
- Power (Watts):
- -
- Fault Protection:
- -
- Control Features:
- EN
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-SO
- Mounting Type:
- Surface Mount
E-L6598D013TR FAQ
1.How can I place an order for E-L6598D013TR through Aetrix?
Please submit a Request for Quotation (RFQ) for E-L6598D013TR 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-L6598D013TR reliable?
The price and inventory of E-L6598D013TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for E-L6598D013TR is usually 5 days.
3.What payment methods are accepted for E-L6598D013TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for E-L6598D013TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for E-L6598D013TR?
E-L6598D013TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your E-L6598D013TR 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-L6598D013TR?
For technical support, including E-L6598D013TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your E-L6598D013TR requirements.
6.How does Aetrix verify that E-L6598D013TR is sourced from the original manufacturer or authorized distributors?
All E-L6598D013TR 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-L6598D013TR meets industry standards.
7.What is the process for return or replacement of E-L6598D013TR?
All E-L6598D013TR units undergo pre-shipment inspection (PSI). If there is an issue with E-L6598D013TR, 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-L6598D013TR part is unused and in its original packaging.
Return procedure for E-L6598D013TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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