TEA1995T/1J

Power Supply Controllers, Monitors Overview

The TEA1995T/1J is a dual synchronous rectifier controller from NXP's GreenChip series, designed for the secondary side of resonant converters. It operates within a supply voltage range of 4.5 V to 38 V and draws a maximum supply current of 160 µA. The device features two independent gate driver stages with differential sensing inputs for SR MOSFETs. Packaged in an 8-SOIC (SO-8) surface-mount housing, it supports logic-level MOSFETs for 5 V operation. The component functions across a temperature range of -40°C to 150°C.

Power Supply Controllers, Monitors Feature Summary

• Adaptive gate drive technology ensures maximum efficiency at all load levels by enabling fast turn-off at the end of conduction.
• Independent differential sensing inputs monitor each SR MOSFET drain-to-source voltage without requiring shortest on-time constraints.
• Ultra-low power consumption during no-load conditions maintains supply current below 200 µA.
• Active gate pull-down functionality supports robust under-voltage lockout protection.

Power Supply Controllers, Monitors Applications

• Secondary side synchronization for LLC resonant power supplies
• Synchronous rectification in multi-output flyback converters
• High-efficiency adapters and compact power systems

Power Supply Controllers, Monitors Procurement Notes

Verify that the ordering suffix '1J' corresponds to the specific reel or tape configuration required for your assembly line. Confirm RoHS3 compliance status prior to integration. Ensure the selected package variant matches the PCB footprint specifications for the 8-SOIC form factor. Cross-reference the manufacturer's latest documentation to validate any changes in environmental certifications or pin assignments before finalizing procurement orders.

Power Supply Controllers, Monitors Selection Notes

Select this controller when designing resonant topologies requiring dual synchronous rectification with minimal external components. It is suitable for applications demanding high efficiency across wide load ranges and low standby power. Ensure the external MOSFETs are compatible with the device's logic-level drive requirements and voltage ratings. This IC complements primary-side controllers like the TEA19161T to form complete, compliant power solutions.

Power Supply Controllers, Monitors Part Context

The TEA1995T belongs to NXP's GreenChip family, optimized for energy-efficient power conversion. It is typically paired with primary-side controllers such as the TEA19161T and TEA19162T to create integrated resonant power supplies. This combination helps designs meet stringent international energy regulations, including Energy Star and DoE standards, while minimizing system complexity and component count.

Power Supply Controllers, Monitors Replacement Considerations

Publicly documented pin-compatible alternatives include the LP3525C from Xinmao Microelectronics. Substitution requires adjusting external resistor values R1 and R2 to the 100–300 Ω range. Verify that the replacement component meets the same voltage and current specifications for the target application.

Power Supply Controllers, Monitors FAQ

Does the TEA1995T require a minimum on-time for the synchronous rectifiers?

No, the TEA1995T implements synchronous rectification control without a shortest on-time constraint, allowing for optimal efficiency.

How does the device handle gate drive adaptation?

It utilizes adaptive gate drive technology to ensure maximum efficiency at any load level, featuring fast turn-off capabilities at the end of conduction.