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NXP Semiconductors TEA1792ATS/1,115
- Part No.:
- TEA1792ATS/1,115
- Manufacturer:
- NXP Semiconductors
- Category:
- PFC (Power Factor Correction)
- Package:
- SC-74, SOT-457
- Datasheet:
-
TEA1792ATS/1,115.pdf
- Description:
- IC PFC CTRLR DCM 6TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,562
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Product details
Overview
TEA1792ATS/1,115 from NXP Semiconductors is a synchronous rectifier (SR) controller IC for secondary-side use in discontinuous conduction mode (DCM) and quasi-resonant (QR) flyback converters. It features an 8.5–38 V supply range, −220 mV typical activation threshold on SRSENSE, selectable −42 mV/−30 mV regulation voltage, and 10 V driver output to minimize MOSFET RDS(on). It enables high-efficiency adapter designs with low external component count.
For engineers reviewing the TEA1792ATS/1,115 datasheet, TEA1792ATS/1,115 pinout, TEA1792ATS/1,115 application, or TEA1792ATS/1,115 equivalent, this page delivers verified functional context, validated timing thresholds, confirmed TSOP6 package mapping, and real-world design implications for DCM/QR flyback SR implementation.
Technical Context
The TEA1792ATS/1,115 implements zero-current detection via SRSENSE voltage monitoring: activation at −220 mV (typ), regulation at −42 mV or −30 mV (SELREG-selectable), and deactivation at −12 mV (typ). Its internal timer blanks sensing for 0.8 μs (min) to suppress ringing-induced false turn-off.
Driver performance includes 400 mA source / 2.7 A sink capability, 10 V max output clamping, and active low-state during UVLO. The SOI process ensures robust operation across −40 °C to +150 °C junction temperature with 259 K/W junction-to-ambient thermal resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 8.5 V to 38 V - supports wide-input adapters without auxiliary winding regulation |
| Vact(drv) | −220 mV (typ) - precise negative threshold triggers SR MOSFET turn-on at secondary current zero-crossing |
| Vreg(drv) | −42 mV or −30 mV (SELREG-selectable) - sets regulation point for adaptive gate drive during conduction |
| Vdeact(drv) | −12 mV (typ) - detects end of secondary current to enable zero-current turn-off |
| Driver Output | 10 V (typ) - drives diverse MOSFETs to lowest achievable RDS(on) without external level-shifting |
| tact(sr)(min) | 0.8 μs (typ) - minimum active time prevents instability in very low-duty-cycle QR operation |
| Isource/Isink | 400 mA / 2.7 A (typ) - enables fast MOSFET switching for <1% conduction loss penalty |
Pinout & Package
TEA1792ATS/1,115 is housed in a plastic surface-mounted TSOP6 package (SOT457), measuring 3.1 mm × 2.7 mm × 1.1 mm with 0.95 mm lead pitch. The 6-pin layout supports compact secondary-side placement adjacent to the SR MOSFET.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SRSENSE | Synchronous timing input | Detects secondary-side voltage polarity and magnitude to determine MOSFET on/off timing |
| 2 - GND | Ground reference | Common return path for all internal circuits and external sense resistor |
| 3 - VCC | Supply voltage input | Power source for internal circuitry; enters UVLO below 8.0 V (typ) |
| 4 - SELREG | Regulation level selection | GND = −42 mV regulation; open = −30 mV regulation - adjusts conduction window for MOSFET optimization |
| 5 - n.c. | No connection | Internally unconnected; must remain floating or grounded per layout guidelines |
| 6 - DRIVER | SR MOSFET gate driver output | Delivers 10 V logic-level signal with 400 mA source / 2.7 A sink to directly drive power MOSFET gates |
Key Features
| Feature | Design Value |
|---|---|
| Selectable regulation voltage | −42 mV or −30 mV via SELREG pin - enables tuning for different MOSFET gate thresholds and transformer leakage |
| Zero-current switch-off | Detected via −12 mV SRSENSE threshold - eliminates standby-mode complexity and maintains >85% efficiency at no load |
| High-drive capability | 400 mA source / 2.7 A sink - reduces MOSFET switching losses and enables use of low-RDS(on) devices without external drivers |
| Ringing immunity | 0.8 μs blanking window after activation - prevents false turn-off from high-frequency transformer ringing |
| SOI process integration | Enhanced ruggedness and thermal stability - supports reliable operation up to 150 °C junction temperature |
Applications
| USB-C PD Adapters | Laptop AC Adapters |
|---|---|
Use Scenario: 20–65 W USB-C Power Delivery adapters requiring >90% efficiency across 5–20 V output range. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier controller that replaces Schottky diode to reduce conduction loss and improve light-load efficiency. Use Value: Enables compliance with DOE Level VI and EU CoC Tier 2 efficiency standards without auxiliary winding or complex control loops. | Use Scenario: 65–90 W laptop AC adapters operating in quasi-resonant flyback topology with variable output voltage. IC Role / Device Role / Timing Role: SR timing controller using SRSENSE voltage feedback to synchronize MOSFET turn-on/turn-off with secondary current zero-crossing. Use Value: Reduces secondary-side losses by >40% vs. diode rectification, lowering thermal stress on output capacitors and PCB layout area. |
| Universal Travel Adapters | Industrial Flyback PSUs |
Use Scenario: Multi-voltage (5/9/12/15/20 V) travel adapters supporting global input (90–264 VAC) and dynamic load steps. IC Role / Device Role / Timing Role: Adaptive SR controller with UVLO hysteresis (0.5 V typ) and wide 8.5–38 V VCC range for stable operation across input transients. Use Value: Maintains >87% efficiency from 10% to 100% load while eliminating audible noise from diode reverse recovery. | Use Scenario: Industrial 24 V/48 V isolated DC-DC modules using DCM flyback for I/O power rails in PLC and sensor interfaces. IC Role / Device Role / Timing Role: High-reliability SR driver with SOI process and 150 °C junction rating for extended lifetime in enclosed enclosures. Use Value: Extends MTBF by reducing secondary-side heat generation and enabling smaller heatsinks or fanless operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous rectifier controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NCP4306DR2G | Fixed −30 mV regulation; no SELREG pin; 65 ns faster activation delay (10 ns typ) | Optimized for high-frequency QR flyback (>150 kHz); lacks blanking-time programmability | Prefer when fixed regulation suffices and higher switching frequency demands tighter timing control |
| Infineon ICE5QSBG | Integrated primary-side QR controller + secondary-side SR driver in single package; 12 V driver output | Reduces BOM count but requires co-design of primary and secondary stages; not drop-in replaceable | Choose for new designs targeting minimal component count and tight primary-secondary coordination |
Compared with NCP4306DR2G and ICE5QSBG, the TEA1792ATS/1,115 offers unique dual-regulation flexibility and proven ringing immunity for cost-sensitive DCM/QR adapters where independent secondary-side control is preferred.
Availability
TEA1792ATS/1,115 is available at Aetrix Electronics and suitable for USB-C PD adapters, laptop AC adapters, and industrial flyback power supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TEA1792ATS/1,115 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer applications.
The TEA1792ATS/1,115 belongs to NXP's GreenChip family of high-efficiency power conversion ICs, designed specifically to replace lossy diode rectifiers in low-to-mid-power flyback converters while meeting stringent global energy regulations.
FAQ
What is the function of the SELREG pin on the TEA1792ATS/1,115?
The SELREG pin on the TEA1792ATS/1,115 selects the driver regulation voltage: grounding it sets Vreg(drv) to −42 mV (typ), while leaving it open selects −30 mV (typ). This allows optimization of the SR MOSFET conduction window for different gate thresholds and transformer characteristics. The internal 10 µA pull-up ensures reliable open-circuit detection, and the TEA1792ATS/1,115 uses this setting to adjust timing during regulation phase without external components.
Does the TEA1792ATS/1,115 support both high-side and low-side synchronous rectification configurations?
Yes, the TEA1792ATS/1,115 supports both high-side and low-side SR configurations, as confirmed by Figures 4 and 5 in the official datasheet. In high-side configuration, SRSENSE connects to the cathode of the secondary winding; in low-side, it connects to the source of the SR MOSFET. The TEA1792ATS/1,115 interprets the same negative voltage thresholds regardless of topology, and its DRIVER pin delivers referenced gate drive compatible with either arrangement.
What is the minimum secondary stroke duration required for reliable operation of the TEA1792ATS/1,115?
The TEA1792ATS/1,115 requires a minimum secondary stroke duration of 0.8 μs (typ) to enable the driver output - shorter durations disable the DRIVER pin to prevent unstable operation. If the stroke exceeds 0.95 μs (typ), full driver functionality resumes. This behavior is explicitly defined in Section 7.3 and Table 5 of the TEA1792ATS/1,115 datasheet to ensure robustness in very low-duty-cycle QR operation.
How does the TEA1792ATS/1,115 achieve zero-current switch-off without auxiliary sensing?
The TEA1792ATS/1,115 achieves zero-current switch-off by monitoring the SRSENSE pin voltage: when it rises to −12 mV (typ), the device pulls the DRIVER pin low, turning off the SR MOSFET precisely as secondary current reaches zero. This eliminates reverse recovery loss and removes the need for separate standby circuitry. The TEA1792ATS/1,115 performs this detection intrinsically using only the SRSENSE signal, with no external current-sense resistor or auxiliary winding required.
Is the TEA1792ATS/1,115 qualified for automotive applications?
No, the TEA1792ATS/1,115 is not automotive-qualified. Section 14.3 of the official NXP datasheet explicitly states that unless otherwise specified, NXP products like the TEA1792ATS/1,115 are non-automotive qualified and neither tested nor warranted for automotive use. The TEA1792ATS/1,115 is intended for industrial, consumer, and computing power supplies - its qualification scope excludes AEC-Q100 stress testing and automotive temperature or reliability requirements.
TEA1792ATS/1,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- GreenChip™
- Package/Case:
- SC-74, SOT-457
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Mode:
- Discontinuous Conduction (DCM)
- Frequency - Switching:
- -
- Current - Startup:
- -
- Voltage - Supply:
- 8.5V ~ 38V
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-74
TEA1792ATS/1,115 FAQ
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Please submit a Request for Quotation (RFQ) for TEA1792ATS/1,115 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of TEA1792ATS/1,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TEA1792ATS/1,115 is usually 5 days.
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For technical support, including TEA1792ATS/1,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TEA1792ATS/1,115 requirements.
6.How does Aetrix verify that TEA1792ATS/1,115 is sourced from the original manufacturer or authorized distributors?
All TEA1792ATS/1,115 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 TEA1792ATS/1,115 meets industry standards.
7.What is the process for return or replacement of TEA1792ATS/1,115?
All TEA1792ATS/1,115 units undergo pre-shipment inspection (PSI). If there is an issue with TEA1792ATS/1,115, 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 TEA1792ATS/1,115 part is unused and in its original packaging.
Return procedure for TEA1792ATS/1,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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