TPS65283

Name: TPS65283
Brand: TI
SKU: TPS65283
Price: 0.924 USD

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Convertidor reductor síncrono doble con entrada de 4.5 V a 18 V y 3.5 A/2.5 A en modo FCCM

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document-pdfAcrobat TPS65283, TPS65283-1 4.5-V to 18-V Input Voltage, Maximum 3.5-A and 2.5-A Current, Synchronous Dual Buck Converter With Power Distribution Switch datasheet (Rev. E) (Inglés) PDF | HTML

TPS65283

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Hoja de datos

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Detalles del producto

Iout (max) (A)

3.5

Vin (min) (V)

4.5

Vin (max) (V)

18

Topology

Buck

Switching frequency (min) (kHz)

200

Switching frequency (max) (kHz)

600

Features

Adjustable current limit, Enable, Frequency synchronization, Power good, Soft-start fixed, Synchronous rectification, UVLO adjustable

Vout (min) (V)

0.6

Vout (max) (V)

0.5

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.0005

Iout (max) (A)

3.5

Vin (min) (V)

4.5

Vin (max) (V)

18

Topology

Buck

Switching frequency (min) (kHz)

200

Switching frequency (max) (kHz)

600

Features

Adjustable current limit, Enable, Frequency synchronization, Power good, Soft-start fixed, Synchronous rectification, UVLO adjustable

Vout (min) (V)

0.6

Vout (max) (V)

0.5

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.0005

VQFN (RGE)

24

16 mm² 4 x 4

Buck Converter
- Wide input voltage range 4.5 to 18 V
- Integrated dual buck converter, maximum continuous current 3.5 A (Buck1) / 2.5 A (Buck2)
- Feedback reference voltage 0.6 V ±1%
- Adjustable switching frequency 200 kHz to
  2 MHz
- Internal built soft start time 2.4 ms
- External clock synchronization
- Cycle-by-cycle current limit
- Power good indicator for each buck
- Continuous current mode (TPS65283) or pulse skipping mode (PSM) (TPS65283-1) at light load
Power distribution switch
- Integrated a power distribution switch with on-resistance 60 mΩ
- Operating input voltage range 2.4 to 6 V
- Adjustable current limiting up to 2.7 A
- Current-limit accuracy ±10% at 1.25 A (typical)
- Auto recovery overcurrent protection
- Reverse input to output voltage protection
- Overtemperature protection
- 24-lead VQFN (RGE) 4-mm × 4-mm package

Buck Converter
- Wide input voltage range 4.5 to 18 V
- Integrated dual buck converter, maximum continuous current 3.5 A (Buck1) / 2.5 A (Buck2)
- Feedback reference voltage 0.6 V ±1%
- Adjustable switching frequency 200 kHz to
  2 MHz
- Internal built soft start time 2.4 ms
- External clock synchronization
- Cycle-by-cycle current limit
- Power good indicator for each buck
- Continuous current mode (TPS65283) or pulse skipping mode (PSM) (TPS65283-1) at light load
Power distribution switch
- Integrated a power distribution switch with on-resistance 60 mΩ
- Operating input voltage range 2.4 to 6 V
- Adjustable current limiting up to 2.7 A
- Current-limit accuracy ±10% at 1.25 A (typical)
- Auto recovery overcurrent protection
- Reverse input to output voltage protection
- Overtemperature protection
- 24-lead VQFN (RGE) 4-mm × 4-mm package

The TPS65283, TPS65283-1 in thermally-enhanced 4-mm × 4-mm VQFN package is a full featured
4.5- to 18-V Vin, 3.5-A/2.5-A output current synchronous step down DC-DC converter, which is optimized for small designs through high efficiency and integrating the high-side and low-side MOSFETs. The device also incorporates one 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.

The 60-mΩ independent power distribution switch limits the output current to a programmable current limit threshold by using an external resistor. The current limit accuracy can be achieved as tight as ±10% at typical 1.25 A. The nFAULT output asserts low under overcurrent and reverse-voltage conditions.

Constant frequency peak current mode control in DC-DC converter simplifies the compensation and optimizes transient response. Cycle-by-cycle overcurrent protection and operating in hiccup mode limit MOSFET power dissipation during buck output short circuit or over loading conditions. When die temperature exceeds thermal over loading threshold, the overtemperature protection shuts down the device.

The TPS65283, TPS65283-1 in thermally-enhanced 4-mm × 4-mm VQFN package is a full featured
4.5- to 18-V Vin, 3.5-A/2.5-A output current synchronous step down DC-DC converter, which is optimized for small designs through high efficiency and integrating the high-side and low-side MOSFETs. The device also incorporates one 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.

The 60-mΩ independent power distribution switch limits the output current to a programmable current limit threshold by using an external resistor. The current limit accuracy can be achieved as tight as ±10% at typical 1.25 A. The nFAULT output asserts low under overcurrent and reverse-voltage conditions.

Constant frequency peak current mode control in DC-DC converter simplifies the compensation and optimizes transient response. Cycle-by-cycle overcurrent protection and operating in hiccup mode limit MOSFET power dissipation during buck output short circuit or over loading conditions. When die temperature exceeds thermal over loading threshold, the overtemperature protection shuts down the device.

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Documentación técnica

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	Tipo	Título		Fecha
*	Data sheet	TPS65283, TPS65283-1 4.5-V to 18-V Input Voltage, Maximum 3.5-A and 2.5-A Current, Synchronous Dual Buck Converter With Power Distribution Switch datasheet (Rev. E)	PDF \| HTML	27 ene 2019

Diseño y desarrollo

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Placa de evaluación

TPS65283EVM-646 — Módulo de evaluación TPS65283EVM

The TPS65283EVM-646 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS65283. The max DC output current of this EVM is 3.5A and 2.5A. -The EVM contains input and output connectors as well as control jumpers to ease evaluation of device features. -It also has EN1, (...)

Guía del usuario: PDF