TPS54283

Name: TPS54283
Brand: TI
SKU: TPS54283
Price: 2.205 USD

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4.5V to 28V Input, Dual 2A Output, 300kHz Step-Down Converter with Internal Compensation

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Data sheet

document-pdfAcrobat 2-A DUAL NON-SYNCHRONOUS CONVERTER WITH INTEGRATED HIGH SIDE MOSFET datasheet (Rev. C)

TPS54283

ACTIVE

Data sheet

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Product details

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Topology

Buck

Type

Converter

Iout (max) (A)

2

Vin (min) (V)

4.5

Vin (max) (V)

28

Switching frequency (min) (kHz)

300

Switching frequency (max) (kHz)

300

Features

Enable, Phase Interleaving

Control mode

current mode

Vout (min) (V)

0.8

Vout (max) (V)

25.2

Iq (typ) (µA)

1800

Duty cycle (max) (%)

90

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Topology

Buck

Type

Converter

Iout (max) (A)

2

Vin (min) (V)

4.5

Vin (max) (V)

28

Switching frequency (min) (kHz)

300

Switching frequency (max) (kHz)

300

Features

Enable, Phase Interleaving

Control mode

current mode

Vout (min) (V)

0.8

Vout (max) (V)

25.2

Iq (typ) (µA)

1800

Duty cycle (max) (%)

90

HTSSOP (PWP)

14

32 mm² 5 x 6.4

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.

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.

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.

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.

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Technical documentation

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	Type	Title		Date
*	Data sheet	2-A DUAL NON-SYNCHRONOUS CONVERTER WITH INTEGRATED HIGH SIDE MOSFET datasheet (Rev. C)		16 Oct 2007
	User guide	TPS54383 Step-Down Converter Evaluation Module User's Guide (Rev. D)	PDF \| HTML	13 Oct 2021
	Selection guide	Power Management Guide 2018 (Rev. R)		25 Jun 2018

Design & development

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Evaluation board

TPS54383EVM — TPS54383 12V Input, Dual 5V and 3.3V Output, 2A Evaluation Module

The TPS54383EVM evaluation module (EVM) is a dual non-synchronous buck converter providing fixed 5.0 V and 3.3 V output at up to 2 A each from a 12 V input bus.

The EVM is designed to start up from a single supply, so no additional bias voltage is required for start-up. The module uses the TPS54383 (...)

User guide: PDF | HTML