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AC/DC 和 DC/DC 轉換器 (整合式 FET)

TPS54388C-Q1

現行

車用 2.95-V 至 6-V、3-A、2-MHz 同步降壓轉換器

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產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但引腳輸出與所比較的裝置不同
TPS62813-Q1 現行 具有固定 Fsw 和 SYNC 並採用 2 mm x 3 mm 可潤濕側翼封裝的車用 2.75V 至 6V、3A 降壓轉換器 Improved performance: Fixed-frequency, spread-spectrum in smaller 2-mm x 3-mm QFN with wettable flanks.

TPS54388C-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 2.95 Vin (max) (V) 6 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2000 Features Enable, Forced PWM, Frequency synchronization, Power good Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 4.5 Iq (typ) (µA) 515 Duty cycle (max) (%) 100
Rating Automotive Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 2.95 Vin (max) (V) 6 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2000 Features Enable, Forced PWM, Frequency synchronization, Power good Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 4.5 Iq (typ) (µA) 515 Duty cycle (max) (%) 100
WQFN (RTE) 16 9 mm² 3 x 3
  • AEC-Q100-qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Two 12-mΩ (typical) MOSFETs for high efficiency at 3-A loads
  • 200-kHz to 2-MHz switching frequency
  • 0.8 V ± 1% voltage reference over temperature (–40°C to +150°C)
  • Synchronizes to external clock
  • Adjustable slow start and sequencing
  • UV and OV power-good output
  • –40°C to +150°C operating junction temperature range
  • Thermally enhanced 3-mm × 3-mm 16-pin WQFN
  • Pin compatible to TPS54418
  • Newer product available: TPS62813-Q1, 6-V step-down converter in 2-mm x 3-mm QFN package with wettable flanks
  • AEC-Q100-qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Two 12-mΩ (typical) MOSFETs for high efficiency at 3-A loads
  • 200-kHz to 2-MHz switching frequency
  • 0.8 V ± 1% voltage reference over temperature (–40°C to +150°C)
  • Synchronizes to external clock
  • Adjustable slow start and sequencing
  • UV and OV power-good output
  • –40°C to +150°C operating junction temperature range
  • Thermally enhanced 3-mm × 3-mm 16-pin WQFN
  • Pin compatible to TPS54418
  • Newer product available: TPS62813-Q1, 6-V step-down converter in 2-mm x 3-mm QFN package with wettable flanks

The TPS54388C-Q1 device is a full-featured 6-V, 3-A, synchronous step-down current-mode converter with two integrated MOSFETs.

The TPS54388C-Q1 device enables small designs by integrating the MOSFETs, implementing current-mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the IC footprint with a small 3-mm × 3-mm thermally enhanced QFN package.

The TPS54388C-Q1 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (Vref) over temperature.

The integrated 12-mΩ MOSFETs and 515-µA typical supply current maximize efficiency. Entering shutdown mode using the enable pin reduces shutdown supply current to 5.5 µA, typical.

The internal undervoltage lockout setting is at 2.45 V, but programming the threshold with a resistor network on the enable pin can increase the setting. The slow-start pin sets the output-voltage start-up ramp. An open-drain power-good signal indicates when the output is within 93% to 107% of its nominal voltage.

Frequency foldback and thermal shutdown protect the device during an overcurrent condition.

The TPS54388C-Q1 device is a full-featured 6-V, 3-A, synchronous step-down current-mode converter with two integrated MOSFETs.

The TPS54388C-Q1 device enables small designs by integrating the MOSFETs, implementing current-mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the IC footprint with a small 3-mm × 3-mm thermally enhanced QFN package.

The TPS54388C-Q1 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (Vref) over temperature.

The integrated 12-mΩ MOSFETs and 515-µA typical supply current maximize efficiency. Entering shutdown mode using the enable pin reduces shutdown supply current to 5.5 µA, typical.

The internal undervoltage lockout setting is at 2.45 V, but programming the threshold with a resistor network on the enable pin can increase the setting. The slow-start pin sets the output-voltage start-up ramp. An open-drain power-good signal indicates when the output is within 93% to 107% of its nominal voltage.

Frequency foldback and thermal shutdown protect the device during an overcurrent condition.
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類型 標題 日期
* Data sheet TPS54388C-Q1 Automotive 2.95-V to 6-V, 3-A , 2-MHz Synchronous Buck Converter datasheet (Rev. B) PDF | HTML 2021年 6月 24日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
Functional safety information TPS54388C-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. A) PDF | HTML 2020年 11月 30日
Technical article Minimize the impact of the MLCC shortage on your power application PDF | HTML 2019年 3月 29日
Technical article How to power next-generation ADAS camera modules PDF | HTML 2018年 9月 11日
Technical article Use a low-quiescent-current switcher for high-voltage conversion PDF | HTML 2018年 8月 28日
Technical article Let’s break it down: how buck converters make your power supply more flexible PDF | HTML 2017年 12月 13日
Application note TPS57112-Q1 High Frequency (2.35 MHz) Operation 2016年 5月 31日
Application note Enable Functionality and Adjusting Under Voltage Lockout for TPS57112-Q1 Device 2016年 5月 5日
Application note Interfacing TPS57xxx-Q1 and TPS65320-Q1 Family Devices With Low Impendence Exter 2015年 12月 8日
EVM User's guide TPS54388EVM User's Guide 2013年 11月 14日

設計與開發

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開發板

TPS54388EVM — TPS54388EVM：2.95V-6V 輸入、3A、2MHz 同步降壓 SWIFTT DCDC 轉換器評估模組

The TPS54388-Q1 DC/DC converter is designed to provide up to a 3-A output from an input voltage source of 2.95 V to 6 V. This evaluation module is designed to demonstrate the small printed-circuit-board (PCB) areas that may be achieved when designing with the TPS54388-Q1 regulator. The switching (...)

使用指南: PDF
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模擬型號

TPS54388 IBIS Model

SLVMAF3.ZIP (11 KB) - IBIS Model
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模擬型號

TPS54388-Q1 TINA-TI Average Reference Design

SLVM992.TSC (57 KB) - TINA-TI Reference Design
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模擬型號

TPS54388-Q1 TINA-TI Transient Reference Design

SLVM860.TSC (179 KB) - TINA-TI Reference Design
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模擬型號

TPS54388-Q1 TINA-TI Transient Spice Model

SLVM859.ZIP (57 KB) - TINA-TI Spice Model
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模擬型號

TPS54388-Q1 Unencrypted PSpice Average Model Package (Rev. A)

SLVM780A.ZIP (37 KB) - PSpice Model
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模擬型號

TPS54388-Q1 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM821A.ZIP (59 KB) - PSpice Model
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