전원 관리 AC/DC 및 DC/DC 컨버터(통합 FET)

TPS546B24S

활성

확장된 보안을 지원하는 2.95V~16V, 적층형 20A, 동기 SWIFT™ 스텝다운 PMBus 컨버터

제품 상세 정보

Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 20 Vin (min) (V) 2.95 Vin (max) (V) 16 Switching frequency (min) (kHz) 225 Switching frequency (max) (kHz) 1500 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, I2C/PMBus, Over Current Protection, Phase Interleaving, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable, Voltage Margining Control mode current mode Vout (min) (V) 0.25 Vout (max) (V) 5.5 Iq (typ) (µA) 9000 Duty cycle (max) (%) 85
Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 20 Vin (min) (V) 2.95 Vin (max) (V) 16 Switching frequency (min) (kHz) 225 Switching frequency (max) (kHz) 1500 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, I2C/PMBus, Over Current Protection, Phase Interleaving, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable, Voltage Margining Control mode current mode Vout (min) (V) 0.25 Vout (max) (V) 5.5 Iq (typ) (µA) 9000 Duty cycle (max) (%) 85
LQFN-CLIP (RVF) 40 35 mm² 7 x 5
  • Integrated extended security feature
  • Split rail support: 2.95-V to 18-V PVIN; 2.95-V to 18-V AVIN (4-V IN VDD5 for switching)
  • Integrated 5.5-mΩ/1.8-mΩ MOSFETs
  • Average current mode control with selectable internal compensation
  • 2 ×, 3 ×, 4 × stackable with current sharing up to 80 A, supporting a single address per output
  • Selectable 0.5-V to 5.5-V output through pin strap or 0.25-V to 5.5-V using PMBus VOUT_COMMAND
  • Extensive PMBus command set with telemetry for V OUT, I OUT, and internal die temperature
  • Differential remote sensing with an internal FB divider for < 1% V OUT error, –40°C to +150°C T J
  • AVS and margining capabilities through PMBus
  • MSEL pins pin programming PMBus defaults
  • 12 selectable switching frequencies from 225 kHz to 1.5 MHz (8 pin strap options)
  • Frequency sync in, sync out
  • Supports prebiased output
  • 7-mm × 5-mm × 1.5-mm, 40-pin QFN
  • Drop-in compatible with TPS546B24A
  • Create a Custom Design Using the TPS546B24S with WEBENCH Power Designer
  • Integrated extended security feature
  • Split rail support: 2.95-V to 18-V PVIN; 2.95-V to 18-V AVIN (4-V IN VDD5 for switching)
  • Integrated 5.5-mΩ/1.8-mΩ MOSFETs
  • Average current mode control with selectable internal compensation
  • 2 ×, 3 ×, 4 × stackable with current sharing up to 80 A, supporting a single address per output
  • Selectable 0.5-V to 5.5-V output through pin strap or 0.25-V to 5.5-V using PMBus VOUT_COMMAND
  • Extensive PMBus command set with telemetry for V OUT, I OUT, and internal die temperature
  • Differential remote sensing with an internal FB divider for < 1% V OUT error, –40°C to +150°C T J
  • AVS and margining capabilities through PMBus
  • MSEL pins pin programming PMBus defaults
  • 12 selectable switching frequencies from 225 kHz to 1.5 MHz (8 pin strap options)
  • Frequency sync in, sync out
  • Supports prebiased output
  • 7-mm × 5-mm × 1.5-mm, 40-pin QFN
  • Drop-in compatible with TPS546B24A
  • Create a Custom Design Using the TPS546B24S with WEBENCH Power Designer

The TPS546B24S is a highly integrated, non-isolated DC/DC converter that expands on the TPS546B24A by adding manufacturer-specific PMBus commands and Extended Write Protect and Passkey. This feature improves security against malicious access to the PMBus by restricting Write capability with greater resolution than the standard Write Protect command. TPS546B24S is capable of high frequency operation and 20-A current output from a 7-mm × 5-mm package. Two, three, and four TPS546B24S devices can be interconnected to provide up to 80 A on a single output. The device has an option to overdrive the internal 5-V LDO with an external 5-V supply through the VDD5 pin to improve efficiency and reduce power dissipation of the converter.

The TPS546B24S uses a proprietary fixed-frequency current-mode control with input feedforward and selectable internal compensation components for minimal size and stability over a wide range of output capacitances.

The PMBus interface with 1-MHz clock support gives a convenient, standardized digital interface for converter configuration as well as monitoring of key parameters including output voltage, output current, and internal die temperature. Response to fault conditions can be set to restart, latch off, or ignore, depending on system requirements. Back-channel communication between stacked devices enables all TPS546B24S converters powering a single output rail to share a single address to simplify system software/firmware design. Key parameters including output voltage, switching frequency, soft-start time, and overcurrent fault limits can also be configured through BOM selection without PMBus communication to support program free power up.

The TPS546B24S is a highly integrated, non-isolated DC/DC converter that expands on the TPS546B24A by adding manufacturer-specific PMBus commands and Extended Write Protect and Passkey. This feature improves security against malicious access to the PMBus by restricting Write capability with greater resolution than the standard Write Protect command. TPS546B24S is capable of high frequency operation and 20-A current output from a 7-mm × 5-mm package. Two, three, and four TPS546B24S devices can be interconnected to provide up to 80 A on a single output. The device has an option to overdrive the internal 5-V LDO with an external 5-V supply through the VDD5 pin to improve efficiency and reduce power dissipation of the converter.

The TPS546B24S uses a proprietary fixed-frequency current-mode control with input feedforward and selectable internal compensation components for minimal size and stability over a wide range of output capacitances.

The PMBus interface with 1-MHz clock support gives a convenient, standardized digital interface for converter configuration as well as monitoring of key parameters including output voltage, output current, and internal die temperature. Response to fault conditions can be set to restart, latch off, or ignore, depending on system requirements. Back-channel communication between stacked devices enables all TPS546B24S converters powering a single output rail to share a single address to simplify system software/firmware design. Key parameters including output voltage, switching frequency, soft-start time, and overcurrent fault limits can also be configured through BOM selection without PMBus communication to support program free power up.

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기술 자료

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유형 직함 날짜
* Data sheet TPS546B24S2.95-V to18-V,20-A, Up to 4 × Stackable, SynchronousSWIFTStep-Down Converter withPMBusand Extended Write Protection datasheet PDF | HTML 2023/11/14
Application brief Using the Security Features Inside the TPS546x24S Family of Step-Down Converters and Modules (Rev. A) PDF | HTML 2024/02/26
Certificate TPS546B24SEVM-1PH EU Declaration of Conformity (DoC) 2023/06/14
Certificate TPS546B24SEVM-2PH EU Declaration of Conformity (DoC) 2023/06/13

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

TPS546D24SEVM-2PH — TPS546D24S 평가 모듈 고정 주파수 동기 벅 컨버터 2상, 쓰기 잠금 기능 지원

TPS546D24SEVM-2PH 평가 모듈(EVM)은 TPS546D24S 디바이스 2개를 지원하는 2상 벅 컨버터로, 단일 0.8V 출력을 제공합니다. TPS546D24A 디바이스는 PMBus 인터페이스를 지원하는 적층형 동기 벅 컨버터로, 공칭 2.95V~16V 입력 공급으로 작동할 수 있습니다. 이 디바이스를 사용하면 PMBus 인터페이스를 통한 프로그래밍과 모니터링이 가능하며, 사용자 구성 가능한 쓰기 잠금 기능을 통해 보안을 향상시킬 수 있습니다.
사용 설명서: PDF | HTML
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주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

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