TPS54283PWPR

Product Summary

The TPS54283PWPR is a dual output non-synchronous buck converter capable of supporting 2A output applications that operate from a 4.5-V to 28-V input supply voltage, and require output voltages between 0.8 V and 90% of the input voltage. With internally determined operating frequency, soft start time, and control loop compensation, the TPS54283PWPR provides many features with a minimum of external components. Channel 1 overcurrent protection is set at 3 A, while Channel 2 overcurrent protection level is selected by connecting a pin to ground, to BP, or left floating. The setting levels are used to allow for scaling of external components for applications not needing the full load capability of both outputs. The outputs may be enabled independently, or may be configured to allow either ratiometric or sequential startup sequencing. Additionally, the two outputs may also be powered from different sources.

Parametrics

TPS54283PWPR absolute maximum ratings: (1)PVDD1, PVDD2, EN1, EN2: 30V; (2)BOOT1, BOOT2: VSW+ 7V; (3)SW1, SW2: -2 to 30V; (4)Input voltage range SW1, SW2 transient (< 50ns): -3 to 31 V; (5)BP: 6.5V; (6)SEQ, ILIM2: -0.3 to 6.5V; (7)FB1, FB2: -0.3 to 3V; (8)SW1, SW2 output current: 7 A; (9)BP load current: 35 mA; (10)Tstg Storage temperature: -55 to +165; (11)TJ Operating temperature: -40 to +150 ℃; (12)Soldering temperature: +260 ℃.

Features

TPS54283PWPR features: (1)4.5-V to 28-V Input Range; (2)Output Voltage Range 0.8 V to 90% of Input Voltage; (3)Output Current Up to 2 A; (4)Two Fixed Switching Frequency Versions: TPS54283: 300 kHz; TPS54286: 600 kHz; (5)Two Selectable Levels of Overcurrent Protection (Output 2); (6)0.8-V 1.5% Voltage Reference; (7)2.1-ms Internal Soft Start; (8)Dual PWM Outputs 180° Out-of-Phase; (9)Ratiometric or Sequential Startup Modes Selectable by a Single Pin; (10)100-mΩ Internal High-Side MOSFETs; (11)Current Mode Control; (12)Internal Compensation (See Page 16); (13)Pulse-by-Pulse Overcurrent Protection; (14)Thermal Shutdown Protection at 148℃; (15)14-Pin PowerPAD. HTSSOP package.

Diagrams