TPS54283 - 2A DUAL NON-SYNCHRONOUS CONVERTER

TPS54283是TI德州仪器公司的一款转换器（集成开关）产品，TPS54283是2A DUAL NON-SYNCHRONOUS CONVERTER，本站介绍了TPS54283的封装应用图解、特点和优点、功能等，并给出了与TPS54283相关的TI元器件型号供参考。

TPS54283 - 2A DUAL NON-SYNCHRONOUS CONVERTER - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品描述

TPS54283 and TPS54286 are dual output non-synchronous buck converters capable of supporting 2-A 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, these converters provide 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.

产品特性

4.5-V to 28-V Input Range
Output Voltage Range 0.8 V to 90% of Input Voltage
Output Current Up to 2 A
Two Fixed Switching Frequency Versions:
- TPS54283: 300 kHz
- TPS54286: 600 kHz
Two Selectable Levels of Overcurrent Protection (Output 2)
0.8-V 1.5% Voltage Reference
2.1-ms Internal Soft Start
Dual PWM Outputs 180° Out-of-Phase
Ratiometric or Sequential Startup Modes Selectable by a Single Pin
100-m Internal High-Side MOSFETs
Current Mode Control
Internal Compensation (See Page 16)
Pulse-by-Pulse Overcurrent Protection
Thermal Shutdown Protection at 148°C
14-Pin PowerPAD™ HTSSOP package
APPLICATIONS
- Set Top Box
- Digital TV
- Power for DSP
- Consumer Electronics

PowerPAD Is a trademark of Texas Instruments. All other trademarks are the property of their respective owners.

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