TPS92512 features: integrated 200mΩ high-side MOSFET; 0V to 300mV adjustable reference voltage; switching frequency range from 100kHz to 2MHz; proprietary PWM dimming input
TPS92512 typical application range: street light; emergency channel / exit lighting; general industrial and commercial lighting;
TPS92512 reference design application circuit:
Figure 1 TPS92512 internal structure diagram
The TPS92512 is a high voltage, up to 2.5-A, step-down (buck) regulator with an integrated high-side N-channel MOSFET. To improve performance during line and load transients the device implements a constant frequency,peak-current mode Control which reduces output capacitance and simplifies external frequency compensation design.
Figure 2 TPS92512 reference design
The TPS92512 contains an internal under-voltage lockout circuit on the VIN pin of the device. However, the internal UVLO is for device protection only and does not contain hysteresis. The UVLO pin of the device should always be used to set the minimum VIN voltage That the circuit operates at. This level should be set using the minimum input voltage expected for the application with a minimum setting of 4.5 V.
TPS92512 Chinese data sheet: Click to download
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