The TPS65286 is a full featured 4.5-V to 28-V VIN, 6-A output current synchronous step down DCDC converter, which is optimized for small designs through high efficiency and integrating the high-side and low-side MOSFETs. The device also incorporates dual N-channel MOSFET power switches for power distribution systems. This device provides a total power distribution solution, where precision current limiting and fast protection response are required.
●A dual 100-m&937; independent power distribution switch limits the output current to a programmable current limit threshold between typical 50 mA~2.7 A by using an external resistor. The current limit accuracy can be achieved as tightly as ±6% at typical 1.2 A. The nFAULT output asserts low under over-current and reverse-voltage conditions.
●Constant frequency peak current mode control in the DCDC converter simplifies the compensation and optimizes transient response. Cycle-by-cycle over-current protection and operating in hiccup mode limit MOSFET power dissipation. When die temperature exceeds thermal over loading threshold, the over temperature protection shuts down the device.
● Integrated Dual Power Distribution Switches:
● 2.5 V to 6 V Operating Input Voltage Range
● Integrated Back-to-Back Power MOSFETs With
●Typical 100-mΩ On-Resistance
● Adjustable Current Limiting from 75 mA to
●2.7 A
● ±6% Current-Limit Accuracy at 1.2 A (Typical)
● Latch-off Over Current Protection Versions
● Reverse Input-Output Voltage Protection
● Built-In Soft-Start
● Integrated Buck DCDC Converter:
● 4.5 V to 28 V Wide Input Voltage Range
● Maximum Continuous 6-A Output Load Current
● Feedback Reference Voltage 0.6 V ±1%
● Fixed 500-kHz Switching Frequency
● Built-In Internal Soft-Start Time: 1 ms
● Cycle-by-Cycle Current Limit
● Adjustable Current Limit Threshold
● Output Over-Voltage Protection
● External Clock Synchronization
● Over Temperature Protection
