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NXP Semiconductors TEA1993TS/1Z
- Part No.:
- TEA1993TS/1Z
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Supply Controllers, Monitors
- Package:
- SC-74, SOT-457
- Datasheet:
-
TEA1993TS/1Z.pdf
- Description:
- IC SYNC RECT CONTROLLER 6TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,094
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Product details
Overview
TEA1993TS/1Z from NXP Semiconductors is a GreenChip synchronous rectifier (SR) controller IC for flyback SMPS secondary-side operation, featuring adaptive gate drive for maximum efficiency across load range, drain sense capability up to 120 V, and self-supplying operation for low-output-voltage or high-side rectification applications in USB PD and quick-charge adapters.
For engineers reviewing the TEA1993TS/1Z datasheet, TEA1993TS/1Z pinout, TEA1993TS/1Z application, or TEA1993TS/1Z equivalent, key selection considerations include its TSOP6 (SOT457) package, 37 mV regulation threshold for SR MOSFET conduction control, 0.5 A source / 0.65 A sink gate drive strength, UVLO with active gate pull-down, and support for both standard and logic-level SR MOSFETs without auxiliary winding.
Technical Context
The TEA1993TS/1Z implements a voltage-mode synchronous rectification control architecture using differential sensing between DRAIN and SOURCE pins to regulate the SR MOSFET's VDS to −37 mV during conduction, with fast turn-off triggered when VDS exceeds +300 mV. Its adaptive gate driver dynamically adjusts output voltage (4.2 V to 12 V) based on XV pin configuration and supply conditions.
It operates across a 0 V to 120 V drain sense range and supports both low-side and high-side SR configurations via self-supplying CAP pin charging - either through DRAIN pin during positive voltage phase or via external XV input - eliminating need for auxiliary winding in battery charging or ultra-low-VOUT designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Architecture | Self-supplying via CAP pin charged from DRAIN or XV; enables operation down to 0 V output without auxiliary winding |
| Drain Sense Range | −0.8 V to +120 V - supports high-side rectification and robust flyback transient handling |
| VDS Regulation Threshold | −37 mV typical - precise conduction control minimizes SR MOSFET conduction loss |
| Gate Drive Strength | 0.50 A source / 0.65 A sink - ensures fast SR MOSFET switching with <65 ns activation delay |
| UVLO Threshold | 3.7 V start / 3.6 V stop on CAP pin - guarantees reliable startup and shutdown with active gate pull-down |
| Minimum Active Time | 1.5 μs - prevents false turn-off due to ringing while maintaining light-load efficiency |
| Package | TSOP6 (SOT457), 6-pin surface-mount - compact footprint compatible with high-density adapter PCB layouts |
Pinout & Package
TSOP6 (SOT457) plastic surface-mounted package with 6 leads; 3.1 mm × 2.7 mm body size, 0.95 mm pitch, and 1.1 mm max height per JEDEC SC-74 outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CAP (Pin 1) | Internal supply capacitor input | Charged via DRAIN or XV to generate internal VCC; enables self-supplying operation in low-VOUT or high-side configurations |
| GND (Pin 2) | Ground reference | Common return for all internal circuitry and gate driver sink path; must be low-inductance connection |
| XV (Pin 3) | External supply input | Selects gate driver output voltage: 4 V (logic-level MOSFETs), 9 V (standard MOSFETs), or 12 V (full-drive mode) |
| GATE (Pin 4) | SR MOSFET gate driver output | Delivers up to 0.65 A sink current; includes 7 Ω active pull-down to ensure fast, reliable turn-off |
| SOURCE (Pin 5) | SR MOSFET source sense input | Direct Kelvin connection point to SR MOSFET source; eliminates PCB trace IR drop error in VDS sensing |
| DRAIN (Pin 6) | SR MOSFET drain sense input | High-voltage input (up to 120 V) that initiates conduction when VDS goes negative and triggers turn-off at +300 mV |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive gate drive | Adjusts VG(max) from 4.2 V to 12 V based on XV pin voltage - optimizes RDS(on) utilization for both logic-level and standard SR MOSFETs |
| Self-supplying capability | Eliminates auxiliary winding requirement in battery chargers and ultra-low-VOUT flybacks by charging CAP from DRAIN pin |
| Drain-source differential sensing | Uses dedicated SOURCE and DRAIN pins with Kelvin routing - rejects PCB parasitic inductance errors during high dI/dt switching |
| UVLO with active gate pull-down | Forces GATE low during undervoltage condition - prevents erratic SR MOSFET behavior and improves system safety |
| No-load supply current | <200 μA - reduces standby power loss critical for Energy Star and EU CoC Tier 2 compliance |
Applications
| USB PD Fast Charging Adapter | Low-Voltage Battery Charger |
|---|---|
Use Scenario: 20–100 W USB Power Delivery adapter with variable 5–20 V output and tight efficiency requirements at light and full load. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier controller managing SR MOSFET conduction timing and gate drive in flyback topology. Use Value: Enables >94% efficiency at 10% load and >96% at full load by replacing output diode with actively controlled MOSFET, reducing conduction loss by >60% vs. Schottky. | Use Scenario: 5–12 V lithium-ion battery charger for portable medical devices requiring zero-voltage startup and no auxiliary winding. IC Role / Device Role / Timing Role: Self-powered SR controller operating directly from transformer secondary with output as low as 0 V. Use Value: Eliminates auxiliary winding and associated component count/cost while maintaining stable SR operation down to 0 V output - critical for CC/CV battery charging profiles. |
| High-Side Rectified Flyback | Quick-Charge Wall Adapter |
Use Scenario: Compact 30 W wall adapter using high-side SR configuration to simplify secondary-side layout and reduce transformer leakage inductance impact. IC Role / Device Role / Timing Role: High-side synchronous rectifier controller sourcing gate drive from CAP pin charged via DRAIN node. Use Value: Achieves 0.5% higher peak efficiency vs. low-side configuration by minimizing common-source inductance and enabling faster SR turn-on/turn-off transitions. | Use Scenario: Multi-protocol quick-charge adapter supporting QC3.0, AFC, and VOOC with dynamic output voltage ranging from 3.6 V to 12 V. IC Role / Device Role / Timing Role: Adaptive SR controller adjusting gate drive voltage and regulation threshold to maintain optimal efficiency across wide VOUT range. Use Value: Maintains ≥93% efficiency from 5 W to 30 W across all supported protocols - meets IEC 62368-1 and DOE Level VI standby loss requirements. |
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 5 V gate drive; no XV pin for voltage selection; requires external supply or auxiliary winding | Limited to low-to-mid power adapters with stable VOUT ≥5 V; not suitable for 0 V startup or high-side rectification | Choose when cost sensitivity outweighs flexibility; verify auxiliary winding availability and VOUT stability |
| Infineon IRS11682PBF | Higher 150 V drain rating; integrated bootstrap diode; no self-supplying CAP charging from DRAIN | Better suited for high-input-voltage industrial flybacks; lacks low-VOUT self-start capability of TEA1993TS/1Z | Prefer for universal-input 85–265 VAC systems where auxiliary winding is acceptable and VOUT ≥5 V |
Compared with NCP4306DR2G and IRS11682PBF, the TEA1993TS/1Z uniquely combines self-supplying operation, programmable gate drive voltage via XV pin, and −37 mV precision VDS regulation - making it the only option among the three capable of zero-voltage startup and high-side rectification without auxiliary components.
Availability
TEA1993TS/1Z is available at Aetrix Electronics and suitable for USB PD fast charging adapters, low-voltage battery chargers, and high-side rectified flyback power supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TEA1993TS/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, automotive processors, and energy-efficient power management ICs.
The TEA1993TS/1Z belongs to NXP's GreenChip family of high-efficiency AC-DC controller ICs, designed specifically to replace lossy output diodes in flyback converters with intelligent synchronous rectification - targeting ultra-low standby power and high light-load efficiency in consumer and portable power applications.
FAQ
What is the primary function of the TEA1993TS/1Z in a flyback power supply?
The TEA1993TS/1Z serves as a dedicated synchronous rectifier controller on the secondary side of flyback converters, replacing the output diode with an actively driven MOSFET. It senses the drain-source voltage of the external SR MOSFET and drives its gate to minimize conduction losses. The TEA1993TS/1Z achieves this through adaptive gate drive, precise −37 mV VDS regulation, and self-supplying operation - enabling high efficiency across full load range including no-load conditions.
How does the TEA1993TS/1Z achieve self-supplying operation without an auxiliary winding?
The TEA1993TS/1Z charges its internal supply capacitor (connected to CAP pin) directly from the DRAIN pin during the positive voltage phase of the SR MOSFET's drain node. This allows the TEA1993TS/1Z to operate in battery charging applications with output voltages as low as 0 V or in high-side rectification topologies - eliminating the need for an auxiliary winding or external bias supply. When XV pin voltage exceeds 4.7 V, the internal diode routes charge to CAP, further enhancing startup reliability.
What is the significance of the XV pin on the TEA1993TS/1Z?
The XV pin on the TEA1993TS/1Z selects the maximum gate driver output voltage: grounded for 9 V (standard SR MOSFETs), tied to output for 4 V (logic-level MOSFETs below 4.7 V), or supplied with 12–38 V for full 12 V drive. This programmability allows the TEA1993TS/1Z to optimize RDS(on) utilization across diverse MOSFET types without redesigning gate drive circuitry - a key differentiator versus fixed-voltage SR controllers like NCP4306DR2G.
Can the TEA1993TS/1Z be used in high-side rectification configurations?
Yes, the TEA1993TS/1Z supports high-side rectification by leveraging its self-supplying CAP pin charging and dedicated SOURCE/DRAIN sensing architecture. In high-side configurations, the CAP pin is charged from the DRAIN node of the high-side SR MOSFET, and the SOURCE pin connects directly to the transformer secondary return - enabling accurate VDS sensing without ground-referenced limitations. This eliminates the need for level-shifting circuits required by many competing SR controllers.
What protection features does the TEA1993TS/1Z include?
The TEA1993TS/1Z integrates UnderVoltage LockOut (UVLO) with active gate pull-down, ensuring the GATE pin is held low during insufficient supply voltage - preventing erratic SR MOSFET switching. It also features built-in blanking and minimum on-time (1.5 μs) to suppress false turn-off from voltage ringing, plus 7 Ω active gate pull-down activated when drain voltage exceeds +300 mV. These protections collectively enhance system reliability and EMI performance in high-dI/dt flyback environments.
TEA1993TS/1Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- GreenChip™
- Package/Case:
- SC-74, SOT-457
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- Secondary-Side Controller, Synchronous Rectifier
- Voltage - Input:
- -
- Voltage - Supply:
- -
- Current - Supply:
- 200 µA
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-74
TEA1993TS/1Z FAQ
1.How can I place an order for TEA1993TS/1Z through Aetrix?
Please submit a Request for Quotation (RFQ) for TEA1993TS/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 TEA1993TS/1Z reliable?
The price and inventory of TEA1993TS/1Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TEA1993TS/1Z is usually 5 days.
3.What payment methods are accepted for TEA1993TS/1Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TEA1993TS/1Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TEA1993TS/1Z?
TEA1993TS/1Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TEA1993TS/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 TEA1993TS/1Z?
For technical support, including TEA1993TS/1Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TEA1993TS/1Z requirements.
6.How does Aetrix verify that TEA1993TS/1Z is sourced from the original manufacturer or authorized distributors?
All TEA1993TS/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 TEA1993TS/1Z meets industry standards.
7.What is the process for return or replacement of TEA1993TS/1Z?
All TEA1993TS/1Z units undergo pre-shipment inspection (PSI). If there is an issue with TEA1993TS/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 TEA1993TS/1Z part is unused and in its original packaging.
Return procedure for TEA1993TS/1Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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