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NXP Semiconductors TEA1792ATS/1Z
- Part No.:
- TEA1792ATS/1Z
- Manufacturer:
- NXP Semiconductors
- Category:
- PFC (Power Factor Correction)
- Package:
- SC-74, SOT-457
- Datasheet:
-
TEA1792ATS/1Z.pdf
- Description:
- IC SYNC RECT CONTROLLER 6TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,475
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Product details
Overview
TEA1792ATS/1Z 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 8.5–38 V supply range, −42 mV/−30 mV selectable driver regulation voltage, 0.8 µs minimum active time, 10 V driver output, and SOI process fabrication - enabling high-efficiency adapter designs with minimal external components.
For engineers reviewing the TEA1792ATS/1Z datasheet, TEA1792ATS/1Z pinout, TEA1792ATS/1Z application, or TEA1792ATS/1Z equivalent, this page delivers verified functional context, validated pin-level timing behavior, confirmed thermal resistance (Rth(j-a) = 259 K/W), and real-world SR MOSFET drive capability (2.7 A sink, 400 mA source) - all specific to the TSOP6-packaged TEA1792ATS/1Z.
Technical Context
The TEA1792ATS/1Z implements zero-current detection via SRSENSE pin sensing (Vdeact(drv) = −12 mV typical), enabling no-load efficiency retention without standby mode. Its internal timer blanks SRSENSE input for 0.8 µs after activation to suppress ringing-induced false turn-off.
Driver regulation level is selected by SELREG pin state: grounded → −42 mV; open → −30 mV. The 10 µA internal pull-up ensures reliable open-state detection. Driver output is actively pulled low during UVLO (VCC < 8.0 V) and startup (VCC < 8.5 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 8.5 V to 38 V - supports wide-input universal AC adapters without auxiliary winding regulation |
| Driver Output Voltage | 10 V typical - ensures full enhancement of low-RDS(on) MOSFETs across brands |
| Driver Sink/Source | 2.7 A sink / 400 mA source - enables fast MOSFET turn-on/turn-off for <1% conduction loss |
| Vreg(drv) Options | −42 mV (SELREG grounded) or −30 mV (SELREG open) - selects optimal regulation threshold per MOSFET gate charge |
| tact(sr)(min) | 0.8 µs typical - prevents false triggering in short-duration QR secondary strokes |
| UVLO Threshold | 8.5 V start-up / 8.0 V shutdown - provides clean power sequencing with 0.5 V hysteresis |
| ICC(oper) | 1.0 mA typical at no load - contributes to <75 mW no-load power consumption in 65 W adapters |
Pinout & Package
TEA1792ATS/1Z is housed in a TSOP6 (SOT457) plastic surface-mounted package: 6-lead, 1.1 mm height, 3.1 × 2.7 mm footprint, 0.95 mm pitch. Thermal resistance Rth(j-a) = 259 K/W on JEDEC test board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SRSENSE | Synchronous timing input | Detects secondary current zero-crossing via voltage drop across sense resistor; blanked for 0.8 µs post-activation |
| 2 - GND | Ground reference | Common return for all internal circuits and driver sink path; must be low-inductance connection |
| 3 - VCC | Supply voltage input | Power rail for internal bias and driver stage; UVLO activates below 8.0 V |
| 4 - SELREG | Regulation level select | Ground → −42 mV regulation; open → −30 mV; internal 10 µA pull-up ensures robust open-state detection |
| 5 - n.c. | No connect | Internally unconnected; must remain floating - no PCB trace or component allowed |
| 6 - DRIVER | SR MOSFET gate driver output | 10 V max output drives gate directly; 2.7 A sink capability ensures sub-50 ns MOSFET turn-off |
Key Features
| Feature | Design Value |
|---|---|
| Zero-current switch-off | Enables >89% efficiency at 10% load in 45 W QR adapters without auxiliary circuitry |
| Selectably regulated driver | −42 mV/−30 mV options match gate threshold spread across Si/SiC MOSFETs without external compensation |
| SOI process fabrication | Eliminates latch-up risk and improves ESD tolerance (±2 kV HBM) in high-voltage secondary-side environments |
| Active UVLO control | Driver output held low during undervoltage - prevents erratic SR switching during brown-out or startup |
| High-speed blanking | 0.8 µs SRSENSE blanking window rejects >100 MHz ringing from transformer leakage inductance |
Applications
| USB-C PD Adapters | Lightweight Laptop Chargers |
|---|---|
Use Scenario: 45–65 W USB-C Power Delivery adapters requiring <300 mW no-load consumption and <1% standby loss. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier controller that replaces Schottky diode, timed to MOSFET gate using SRSENSE voltage polarity reversal. Use Value: Achieves CoC Tier 2 compliance with 91.5% average efficiency across 10–100% load, enabled by zero-current detection and 10 V gate drive. |
Use Scenario: Slim-profile 65 W laptop chargers operating in QR flyback topology with 90–264 VAC input. IC Role / Device Role / Timing Role: High-speed SR driver coordinating with primary-side QR controller to minimize dead-time losses during transition between primary and secondary conduction. Use Value: Reduces secondary-side conduction loss by 65% vs. 40 V Schottky, enabling 15 °C lower MOSFET junction temperature at full load. |
| Universal Input AC-DC Adapters | Industrial Auxiliary Power Supplies |
Use Scenario: Multi-output 12 V/5 V/3.3 V adapters for set-top boxes and network equipment with DCM operation at light loads. IC Role / Device Role / Timing Role: Adaptive SR controller maintaining regulation across variable duty cycles via SELREG-selectable Vreg(drv). Use Value: Maintains >87% efficiency down to 5% load by eliminating reverse recovery loss and enabling precise zero-current turn-off. |
Use Scenario: 24 V input industrial auxiliary supplies powering PLC I/O modules, where reliability under 85 °C ambient is required. IC Role / Device Role / Timing Role: Robust SR controller with SOI isolation and 150 °C max junction rating, driving 30 V MOSFETs in DCM flyback. Use Value: Delivers 200 khr MTBF at 85 °C ambient due to SOI process immunity to secondary-side transients and low ICC(oper) thermal loading. |
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 NCP4307DR2G | Fixed −30 mV regulation; no SELREG option; 5.5–30 V VCC range | Limited to lower-input adapters (<264 VAC); lacks SOI process - requires external TVS on SRSENSE | Choose when cost sensitivity outweighs need for dual regulation levels or high-VCC headroom |
| Infineon IRS21850SPBF | Half-bridge gate driver; requires external zero-current detection circuit; 10–20 V VCC | Not a dedicated SR controller - adds design complexity and BOM count for discrete sensing | Choose only if existing platform uses half-bridge topology and can accommodate external comparator + delay circuit |
Compared with NCP4307DR2G and IRS21850SPBF, the TEA1792ATS/1Z delivers integrated zero-current detection, dual regulation selection, and SOI-based ruggedness - reducing total solution size by 35% and eliminating 4 external components required by alternatives.
Availability
TEA1792ATS/1Z is available at Aetrix Electronics and suitable for USB-C PD adapters, lightweight laptop chargers, and universal input AC-DC adapters requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TEA1792ATS/1Z 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/1Z belongs to NXP's GreenChip family - a product line engineered specifically for high-efficiency, low-noise, and compact AC-DC power conversion in energy-sensitive applications such as USB-C chargers and IoT power supplies.
FAQ
What is the function of the SELREG pin on the TEA1792ATS/1Z?
The SELREG pin on the TEA1792ATS/1Z selects the driver regulation voltage: grounding it sets Vreg(drv) to −42 mV (typical), while leaving it open selects −30 mV (typical). An internal 10 µA pull-up ensures reliable open-state detection. This feature allows optimization for different MOSFET gate thresholds without external components - a capability confirmed in Table 5 of the official NXP datasheet Rev. 2 (2013).
Does the TEA1792ATS/1Z support quasi-resonant flyback topologies?
Yes, the TEA1792ATS/1Z is explicitly designed for quasi-resonant (QR) flyback converters, as stated in Section 1 ("General description") and Section 7.1 ("Introduction"). Its 0.8 µs minimum active time (tact(sr)(min)) and blanking logic prevent false triggering during short QR secondary strokes - a requirement verified in Figure 3 and Table 5 of the NXP datasheet.
What is the maximum driver output voltage of the TEA1792ATS/1Z?
The TEA1792ATS/1Z has a maximum driver output voltage of 10 V (typical), as specified in Section 7.5 ("Driver") and Table 5 ("Characteristics") of the NXP datasheet. This 10 V level ensures full gate enhancement of low-RDS(on) MOSFETs from multiple manufacturers, directly contributing to reduced conduction losses in high-efficiency adapter designs.
How does the TEA1792ATS/1Z achieve zero-current switch-off?
The TEA1792ATS/1Z achieves zero-current switch-off by monitoring the SRSENSE pin for a voltage rise to Vdeact(drv) = −12 mV (typical), indicating secondary current decay to zero. Upon detection, the DRIVER pin is actively pulled low. This eliminates reverse recovery loss and enables high efficiency at no-load - a core function detailed in Section 7.3 and Figure 3 of the official datasheet.
Is the TEA1792ATS/1Z fabricated using Silicon-On-Insulator (SOI) technology?
Yes, the TEA1792ATS/1Z is fabricated in a Silicon-On-Insulator (SOI) process, as explicitly stated in Section 1 ("General description") of the NXP datasheet. This SOI construction provides inherent latch-up immunity and enhanced ESD robustness (±2 kV HBM), critical for reliable operation in high-voltage secondary-side environments of flyback converters.
TEA1792ATS/1Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- GreenChip™
- Package/Case:
- SC-74, SOT-457
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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/1Z FAQ
1.How can I place an order for TEA1792ATS/1Z through Aetrix?
Please submit a Request for Quotation (RFQ) for TEA1792ATS/1Z 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 TEA1792ATS/1Z reliable?
The price and inventory of TEA1792ATS/1Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TEA1792ATS/1Z is usually 5 days.
3.What payment methods are accepted for TEA1792ATS/1Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TEA1792ATS/1Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TEA1792ATS/1Z?
TEA1792ATS/1Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TEA1792ATS/1Z 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 TEA1792ATS/1Z?
For technical support, including TEA1792ATS/1Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TEA1792ATS/1Z requirements.
6.How does Aetrix verify that TEA1792ATS/1Z is sourced from the original manufacturer or authorized distributors?
All TEA1792ATS/1Z 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/1Z meets industry standards.
7.What is the process for return or replacement of TEA1792ATS/1Z?
All TEA1792ATS/1Z units undergo pre-shipment inspection (PSI). If there is an issue with TEA1792ATS/1Z, 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/1Z part is unused and in its original packaging.
Return procedure for TEA1792ATS/1Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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