NXP Semiconductors 9397 750 16172

Overview

9397 750 16172 from NXP is a STARplug demonstration board centered on the TEA1522 SMPS controller IC, designed for universal-input (80–276 V_AC) to 5 V/1.2 A flyback power supplies. It integrates an optocoupler-based secondary-side regulation loop, valley switching, frequency reduction at light load, and built-in protections including OCP, UVLO, OVP, OTP, and demagnetization detection.

For engineers reviewing the 9397 750 16172 datasheet, 9397 750 16172 application, 9397 750 16172 pinout, or 9397 750 16172 equivalent, this board serves as a validated reference design for compact, low-standby-power (<100 mW), low-EMI USB chargers and slim-line domestic appliance power plugs requiring robust safety compliance and space-constrained layouts.

Technical Context

The 9397 750 16172 implements a complete flyback converter with primary-side control via the TEA1522 IC and secondary-side feedback through U2:1/U2:2 (PC817B optocoupler). It uses valley-switching mode to minimize switching losses and reduces switching frequency below 50 kHz at light loads to maintain high efficiency down to standby.

Protection mechanisms include cycle-by-cycle adjustable overcurrent detection (via R9 current sense), under-voltage lockout (UVLO), overvoltage protection (OVP), overtemperature shutdown, short-winding detection, and demagnetization monitoring - all enabled by the TEA1522's internal logic without external supervision circuitry.

Key Specifications

Availability

9397 750 16172 is available at Aetrix Electronics and suitable for USB charger development, white goods auxiliary power supply design, and security camera power module prototyping requiring stable component supply, rapid evaluation, and regulatory-compliant reference implementation.

Supply support for 9397 750 16172 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 STARplug platform - of which 9397 750 16172 is a member - was developed to accelerate time-to-market for compact, energy-efficient, and safety-certifiable AC/DC power supplies targeting cost-sensitive, space-constrained end products like USB chargers and small domestic appliances.

FAQ

What is the primary function of the 9397 750 16172 demonstration board?

The 9397 750 16172 demonstration board is a fully assembled and tested reference design implementing a 5 V/1.2 A flyback power supply using the TEA1522 SMPS controller. Its primary function is to validate performance, simplify certification, and accelerate development of universal-input AC/DC adapters - especially for USB charging and slim-line domestic appliance power modules.

Does the 9397 750 16172 support secondary-side regulation?

Yes, the 9397 750 16172 implements precise secondary-side regulation using a PC817B optocoupler (U2) and a TL431-equivalent shunt regulator on the output side. This ensures tight 5 V output tolerance (±2%) across line, load, and temperature variations, independent of transformer turns ratio inaccuracies.

What protection features are implemented on the 9397 750 16172 board?

The 9397 750 16172 board leverages the TEA1522's integrated protection suite: cycle-by-cycle overcurrent protection (via R9), under-voltage lockout (UVLO), overvoltage protection (OVP), overtemperature shutdown, short-winding detection, and demagnetization monitoring - all active without external supervision components.

Can the 9397 750 16172 be used for 12 V output designs?

No - the 9397 750 16172 is specifically optimized for 5 V/1.2 A output with fixed feedback resistor network (R3/R4/R5) and transformer turns ratio. Altering output voltage requires redesigning the feedback divider, optocoupler biasing, and transformer secondary winding; it is not a configurable or multi-output board.

Is the 9397 750 16172 compliant with energy efficiency standards such as ERP Tier 2?

Yes - the 9397 750 16172 achieves <100 mW no-load power consumption and high light-load efficiency via TEA1522's valley switching and frequency reduction, meeting ERP Lot 6 (Tier 2) requirements for external power supplies when used with appropriate magnetics and layout practices.