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The TPS9260x-Q1 family of devices comprises single-channel and dual-channel high-side current LED drivers.
With full protection and diagnostics, this family of devices is dedicated for and ideally suited to automotive front lighting. The base of each independent driver is a peak-current-mode boost controller. Each controller has two independent feedback loops, a current-feedback loop with a high-side current-sensing shunt, and a voltage-feedback loop with an external resistor-divider network. The controller delivers a constant output voltage or a constant output current. The connected load determines whether the device regulates a constant output current (if the circuit reaches the current set-point earlier than voltage set-point), or a constant output voltage (if the circuit reaches the voltage set-point first, for example, in an open-load condition). Each controller supports all typical topologies such as boost, boost-to-battery, SEPIC, or flyback. Uses of the high-side PMOS FET driver are for PWM dimming of the LED string and for cutoff in case of an external short circuit to GND to protect the circuit. Applications include automotive headlight LED drivers and high-brightness LED. TPS92602-Q1 has an input voltage of 4-40 and an output voltage of 4-75.
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