TPS40304A

Name: TPS40304A
Brand: TI
SKU: TPS40304A
Price: 0.411 USD

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3-V- bis 20-V-, 25-A-, 600-kHz-Synchron-Abwärtsregler mit FSS und weitem Betriebstemperaturbereich

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Datenblatt

document-pdfAcrobat 3-V TO 20-V INPUT SYNCHRONOUS BUCK CONTROLLER. datasheet (Englisch)

TPS40304A

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Datenblatt

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Produktdetails

Vin (min) (V)

3

Vin (max) (V)

20

Iout (max) (A)

25

Operating temperature range (°C)

-40 to 145

Control mode

Voltage mode

Rating

Catalog

Vout (min) (V)

0.6

Vout (max) (V)

18

Features

Enable, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification

Iq (typ) (µA)

2500

Duty cycle (max) (%)

90

Number of phases

1

Vin (min) (V)

3

Vin (max) (V)

20

Iout (max) (A)

25

Operating temperature range (°C)

-40 to 145

Control mode

Voltage mode

Rating

Catalog

Vout (min) (V)

0.6

Vout (max) (V)

18

Features

Enable, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification

Iq (typ) (µA)

2500

Duty cycle (max) (%)

90

Number of phases

1

VSON (DRC)

10

9 mm² 3 x 3

Input Voltage Range from 3 V to 20 V
Fixed 600-kHz Switching Frequency
High- and Low-Side FET R_DS(on) Current Sensing
Programmable Thermally Compensated OCP Levels
Programmable Soft-Start
591-mV, 1% Reference Voltage
Voltage Feed-Forward Compensation
Supports Pre-Biased Output
Frequency Spread Spectrum
Thermal Shutdown Protection at 145°C
10-Pin 3 mm × 3 mm SON Package with Ground
Connection to Thermal Pad
APPLICATIONS
- POL Modules
- Printer
- Digital TV
- Telecom

Input Voltage Range from 3 V to 20 V
Fixed 600-kHz Switching Frequency
High- and Low-Side FET R_DS(on) Current Sensing
Programmable Thermally Compensated OCP Levels
Programmable Soft-Start
591-mV, 1% Reference Voltage
Voltage Feed-Forward Compensation
Supports Pre-Biased Output
Frequency Spread Spectrum
Thermal Shutdown Protection at 145°C
10-Pin 3 mm × 3 mm SON Package with Ground
Connection to Thermal Pad
APPLICATIONS
- POL Modules
- Printer
- Digital TV
- Telecom

The TPS40304A is a cost-optimized synchronous buck controller that operates from 3-V to 20-V input. The controller implements a voltage-mode control architecture with input-voltage feed-forward compensation that responds instantly to input voltage change. The switching frequency is fixed at 600 kHz.

Frequency Spread Spectrum feature adds dither to the switching frequency, significantly reducing the peak EMI noise and making it much easier to comply with EMI standards.

The TPS40304A offers design with a variety of user programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation.

The OCP level is programmed by a single external resistor connected from LDRV pin to circuit ground. During initial power on, the TPS40304A enters a calibration cycle, measures the voltage at the LDRV pin, and sets an internal OCP voltage level. During operation, the programmed OCP voltage level is compared to the voltage drop across the low-side FET when it is on to determine whether there is an overcurrent condition. The TPS40304A then enters a shutdown and restart cycle until the fault is removed.

The TPS40304A is a cost-optimized synchronous buck controller that operates from 3-V to 20-V input. The controller implements a voltage-mode control architecture with input-voltage feed-forward compensation that responds instantly to input voltage change. The switching frequency is fixed at 600 kHz.

Frequency Spread Spectrum feature adds dither to the switching frequency, significantly reducing the peak EMI noise and making it much easier to comply with EMI standards.

The TPS40304A offers design with a variety of user programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation.

The OCP level is programmed by a single external resistor connected from LDRV pin to circuit ground. During initial power on, the TPS40304A enters a calibration cycle, measures the voltage at the LDRV pin, and sets an internal OCP voltage level. During operation, the programmed OCP voltage level is compared to the voltage drop across the low-side FET when it is on to determine whether there is an overcurrent condition. The TPS40304A then enters a shutdown and restart cycle until the fault is removed.

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	Typ	Titel		Datum
*	Data sheet	3-V TO 20-V INPUT SYNCHRONOUS BUCK CONTROLLER. datasheet		27 Jan 2010

Design und Entwicklung

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Evaluierungsplatine

TPS40304EVM-353 — 8–14 V Vin, 1,2 V Vout, Synchron-Abwärtswandler-Evaluierungsmodul mit NexFET™-Leistungs-MOSFETs

The TPS40304EVM-353 evaluation module is a synchronous buck controller providing a 1.2-V output at up to 20 A from a nominal 12-V input bus. The EVM is designed to start-up from a single supply, and no additional bias voltage is required. The module uses our NexFET™ high performance MOSFETs (...)

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TPS40304A

3-V- bis 20-V-, 25-A-, 600-kHz-Synchron-Abwärtsregler mit FSS und weitem Betriebstemperaturbereich

TPS40304A

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