Texas Instruments LM25184EVM-S12 Converter Evaluation Module (EVM)

Texas Instruments LM25184EVM-S12 Converter Evaluation Module (EVM) is designed to showcase the performance of the LM25184-Q1 PSR flyback converter with a wide input voltage range. The design is packaged in a miniature footprint with a low component count. It operates over a wide input voltage range of 6V to 42V to deliver a fixed 12V output with better than 1.5% setpoint accuracy and currents up to 1A. The Texas Instruments LM25184-Q1 operates without an auxiliary winding or optocoupler and provides very tight output voltage regulation, better than 1%. The LM25184-Q1 offers a full suite of protection features to ensure the protection of the regulator during fault conditions. These include undervoltage lockout (UVLO) to ensure proper operation during voltage-sag conditions, programmable soft-start (SS) to reduce inrush current, hiccup-mode overcurrent protection (OCP) and thermal shutdown. A precision enable (EN), and output voltage thermal compensation (TC) features are also provided.

Features

6V to 42V input voltage range
12V output voltage with 1.5% setpoint accuracy
Resistor divider to EN/UVLO to facilitate programmable input voltage UVLO

Rated for 1A of load current
Fully assembled, tested, and proven PCB layout with a small footprint

Applications

Automotive powertrain systems
Traction inverter and motor drives: IGBT and SiC gate drive supplies

Sub-AM band automotive body electronics
Isolated field transmitters and field actuators
Isolated bias power rails

Required Equipment

Voltage Source - The input voltage source V_IN must be a 0–42V variable DC source capable of supplying 2A
Multimeters
- Voltmeter 1 - Input voltage at V_IN+ to V_IN– (set the voltmeter to an input impedance of 100MΩ)
- Voltmeter 2 - Output voltage at VO+ to VO– (set the voltmeter to an input impedance of 100MΩ)
- Ammeter 1 - Input current (set the ammeter to 1-second aperture time)
- Ammeter 2 - Output current (set the ammeter to 1-second aperture time)