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PMIC - LED Drivers

The TPS61160ADRVR is an advanced LED driver for either buck boost or boost mode, providing a simple solution for the rapid development of high efficiency and advanced feature sets required for constant current LED drivers. Featuring a wide (4.5V to 42V) input voltage range, the device is well suited for high input voltage requirements, such as automotive lighting applications. It is supported by a wide (6 to 80V) output voltage range, so it can provide any output voltage required.The device supports programmable constant current operation that is adjustable via an external resistor, meaning it delivers a highly regulated and adjustable constant current drive to the LED. Its current accuracy and PWM dimming provide a high performance, flexible architecture that is suitable for a range of application conditions, such as automotive headlamp lighting, general display lighting, and automotive rear-view mirror lighting. It can also be used with other LED drivers, such as LED drivers featuring inductors.

Features

• Wide (4.5V to 42V) input voltage range
• Wide (6 to 80V) output voltage range
• Configurable architecture featuring current accuracy and PWM dimming
• Space-saving chip-scale packaging

Application field

The TPS61160ADRVR is ideal for a number of applications, including automotive lighting and automotive rear-view mirror lighting. It can also be used for industrial, general display, and building lighting applications. Additionally, it is suitable for a range of application conditions, such as those featuring a high input voltage.

Working principle

The TPS61160ADRVR features a proprietary Buck-Boost mode that ensures a highly regulated, adjustable, and current controllable LED drive. The device comprises two external control pins, BST and EXTC, that can be used to adjust the output voltage and current accuracy, respectively. When the external capacitor (CNZ) is charged, the draining of the charge through the EXTC pin adjusts the output voltage and current accuracy. Using the current sense resistor (RSENSE), the current can be accurately regulated.

The TPS61160ADRVR also features soft-start and jump-start protection circuitry which provides dynamic current protection for the LEDs. The soft-start feature ensures the device starts at low current and gradually ramps up to the set current, reducing the stress on the LEDs. Similarly, the jump-start protection feature ensures an abnormal jump in LED current does not occur if the LED short circuits. This ensures the highest level of safety when using the device in LED lighting applications.

Conclusion

The TPS61160ADRVR is an advanced LED driver that features a wide input voltage range and high output current accuracy. Its proprietary Buck-Boost mode is ideal for a range of applications, including automotive lighting and automotive rear-view mirror lighting. Additionally, the protection circuitry it employs provides a high level of safety when used in LED lighting applications. As such, the TPS61160ADRVR is a highly flexible, efficient, and cost-effective solution for the rapid development of constant current LED drivers.

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