TPS65263QRHBTQ1

The TPS65263-Q1 contains three synchronous buck converters with a wide input voltage range of 4.0V to 18V. The converters feature constant-frequency peak current mode control, designed to simplify the application while enabling designers to optimize the system for their target application. The switching frequency is adjustable via an external resistor over the range of 200kHz to 2.3MHz. 180° out-of-phase operation between buck1, buck2, and buck3 (buck2 and buck3 operate in phase) minimizes input filter requirements. The initial startup voltage of each buck converter can be set via external feedback resistors. A 7-bit VID controlled via I²C allows dynamic adjustment of buck2's output voltage from 0.68V to 1.95V in 10mV steps. The VID slew rate can be programmed via 3-bit I²C control to optimize overshoot/undershoot during VID transitions. Each buck converter in the TPS65263-Q1 can be controlled via I²C to: enable/disable output voltage, set pulse skip mode (PSM) or forced continuous conduction mode (FCM) under light load conditions, and read power-good status, overcurrent warnings, and temperature warnings. The TPS65263-Q1 features overvoltage protection, overcurrent protection, short-circuit protection, and overtemperature protection.

Key features

• Feedback reference voltage meeting automotive application requirements, updated from 0.6V ±2% to 0.6V ±1%
• AEC-Q100 qualified with the following results: Device Temperature Grade 1: -40°C to 125°C operating junction temperature range; Device Human Body Model (HBM) ESD classification level H2; Device Charged Device Model (CDM) ESD classification level C4B
• Operating input voltage range: 4.0V to 18V
• Maximum continuous output current: 3A/2A/2A
• Buck2 I²C-controlled 7-bit VID programmable output voltage range: 0.68V to 1.95V, 10mV step size
• I²C readback of power good status, overcurrent warning, and die temperature warning
• I²C-compatible interface supporting Standard Mode (100kHz) and Fast Mode (400kHz)
• Feedback reference voltage 0.6V ±1%