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TPS54338

アクティブ
ご注文はこちら
データシート

TPS54338

アクティブ
データシート ご注文はこちら

製品詳細

Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 28 Vin (min) (V) 3.8 Vout (max) (V) 22 Vout (min) (V) 0.6 Features Adjustable soft start, Adjustable switching frequency, Enable, External Sync, Light-load efficiency, Low Quiescent Current, Phase Interleaving, UVLO adjustable EMI & noise features Fixed-frequency control, Low parasitic packaging, Mitigated interference & noise technology – architecture 1 (MINT 1), Pinout optimization Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000028 Duty cycle (max) (%) 98
Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 28 Vin (min) (V) 3.8 Vout (max) (V) 22 Vout (min) (V) 0.6 Features Adjustable soft start, Adjustable switching frequency, Enable, External Sync, Light-load efficiency, Low Quiescent Current, Phase Interleaving, UVLO adjustable EMI & noise features Fixed-frequency control, Low parasitic packaging, Mitigated interference & noise technology – architecture 1 (MINT 1), Pinout optimization Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000028 Duty cycle (max) (%) 98
VQFN-HR (RQF) 9 3 mm² (2 mm × 1.5 mm)
  • Mitigated interference and noise technology - architecture 1 (MINT 1)
    • Facilitates CISPR 25 Class 5 Compliance
    • Good electromagnetic interference (EMI) performance with frequency spread spectrum and optimized pinout
  • Configured for a wide range of applications
    • 3.8V to 28V input voltage range
    • 0.6V to 22V output voltage range
    • Up to 5A (TPS54538), 4A (TPS54438), 3A (TPS54338) continuous output current
    • 0.6V ±1% reference voltage (–40°C to 150°C)
    • 70ns and 114ns minimum switching on and off-time
    • 8us maximum switching on-time
    • 98% maximum duty cycle
  • High efficiency
    • Integrated 47mΩ and 21mΩ MOSFETs
    • Low quiescent current of 28uA (typical)
  • Ease of use and small design size
    • Peak current control mode with internal compensation
    • 200kHz to 2.2MHz selectable frequency
    • Synchronizable to an external clock (support phase shift): 200kHz to 2.2MHz
    • Selectable PFM / FCCM at light load condition
    • Selectable adjustable soft-start time, power-good indicator function
    • Hiccup OC limit for both high-side and low-side MOSFETs
    • Non-latched protections for OTP, OCP, OVP, UVP, and UVLO
    • Integrated bootstrap capacitor to support single-layer PCB layout
    • –40°C to 150°C operating junction temperature
    • 1.5mm × 2.0mm QFN package
  • Create a custom design with the TPS54x38 using the WEBENCH Power Designer
  • Mitigated interference and noise technology - architecture 1 (MINT 1)
    • Facilitates CISPR 25 Class 5 Compliance
    • Good electromagnetic interference (EMI) performance with frequency spread spectrum and optimized pinout
  • Configured for a wide range of applications
    • 3.8V to 28V input voltage range
    • 0.6V to 22V output voltage range
    • Up to 5A (TPS54538), 4A (TPS54438), 3A (TPS54338) continuous output current
    • 0.6V ±1% reference voltage (–40°C to 150°C)
    • 70ns and 114ns minimum switching on and off-time
    • 8us maximum switching on-time
    • 98% maximum duty cycle
  • High efficiency
    • Integrated 47mΩ and 21mΩ MOSFETs
    • Low quiescent current of 28uA (typical)
  • Ease of use and small design size
    • Peak current control mode with internal compensation
    • 200kHz to 2.2MHz selectable frequency
    • Synchronizable to an external clock (support phase shift): 200kHz to 2.2MHz
    • Selectable PFM / FCCM at light load condition
    • Selectable adjustable soft-start time, power-good indicator function
    • Hiccup OC limit for both high-side and low-side MOSFETs
    • Non-latched protections for OTP, OCP, OVP, UVP, and UVLO
    • Integrated bootstrap capacitor to support single-layer PCB layout
    • –40°C to 150°C operating junction temperature
    • 1.5mm × 2.0mm QFN package
  • Create a custom design with the TPS54x38 using the WEBENCH Power Designer

The TPS54x38 is a high-efficiency, high-voltage input, and easy-to-use synchronous buck converter with high design flexibility. With the wide operating input voltage range of 3.8V to 28V, the TPS54x38 is designed for systems powered from 5V, 12V, 19V, 24V power-bus rails. The device supports up to 5A, 4A, 3A continuous output current and 98% maximum duty cycle.

TPS54x38 uses fixed frequency peak current control with internal compensation for fast transient response and good line and load regulation. With the optimized internal loop compensation, the device eliminates the need for external compensation over a wide output voltage range and switching frequency. Integrated bootstrap capacitor helps achieve single layer PCB and reduce external component count.

TPS54x38 allows high design flexibility with wide supported switching frequency of 200kHz – 2.2MHz set by the RT/SYNC pin. The device has the option for pulse frequency modulation (PFM), forced continuous conduction modulation (FCCM) at light load condition and adjustable soft-start (SS) time / power-good (PG) indicator with different configuration of the MODE pin.

TPS54x38 provides protection functions including thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection. TPS54x38 is available in 9-pin 1.5mm × 2.0mm QFN package and the pinout is available for single-layer PCB layout and the junction temperature is specified from –40°C to 150°C.

The TPS54x38 is designed with mitigated interference and noise technology using architecture 1 features (MINT 1) to quickly and easily implement a low-EMI design.

The TPS54x38 is a high-efficiency, high-voltage input, and easy-to-use synchronous buck converter with high design flexibility. With the wide operating input voltage range of 3.8V to 28V, the TPS54x38 is designed for systems powered from 5V, 12V, 19V, 24V power-bus rails. The device supports up to 5A, 4A, 3A continuous output current and 98% maximum duty cycle.

TPS54x38 uses fixed frequency peak current control with internal compensation for fast transient response and good line and load regulation. With the optimized internal loop compensation, the device eliminates the need for external compensation over a wide output voltage range and switching frequency. Integrated bootstrap capacitor helps achieve single layer PCB and reduce external component count.

TPS54x38 allows high design flexibility with wide supported switching frequency of 200kHz – 2.2MHz set by the RT/SYNC pin. The device has the option for pulse frequency modulation (PFM), forced continuous conduction modulation (FCCM) at light load condition and adjustable soft-start (SS) time / power-good (PG) indicator with different configuration of the MODE pin.

TPS54x38 provides protection functions including thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection. TPS54x38 is available in 9-pin 1.5mm × 2.0mm QFN package and the pinout is available for single-layer PCB layout and the junction temperature is specified from –40°C to 150°C.

The TPS54x38 is designed with mitigated interference and noise technology using architecture 1 features (MINT 1) to quickly and easily implement a low-EMI design.
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上位の文書 タイプ タイトル フォーマットオプション 最新の英語版をダウンロード 日付
* データシート TPS54x38 3.8V to 28V, 5A, 4A, 3A, Synchronous Buck Converter With User Selectable Mode and Mitigated Interference and Noise Technology (MINT) データシート (Rev. D) PDF | HTML 2026/11/02
アプリケーション概要 Application Brief DDR5、LPDDR5、LPDDR5X メモリへの電力供給用として推奨さ れる DC/DC コンバータと PMIC PDF | HTML PDF | HTML 2026/02/20

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評価ボード

TPS54538EVM — TPS54538 評価基板

TPS54538EVM は、TPS54538 コンバータの評価を目的とする、包括的な組み立てとテスト実施済みの回路です。この評価基板は 3.8V ～ 28V の入力電圧範囲で動作する構成を採用しており、5V のレギュレーション済み出力で最大 5A の負荷電流を供給します。動作モード、ソフトスタート時間、スイッチング周波数など、このデバイスのほとんどの設定は、ジャンパを使用して簡単に調整または設定できます。
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