TPS55165-Q1 - 36V 1A Buck-Boost Regulator | Texas Instruments
부품 번호: TPS55165QPWPRQ1 ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $5.1 | $5.10 |
| 10 | $4.59 | $45.90 |
| 100 | $3.98 | $398.00 |
| 500 | $3.42 | $1,710.00 |
| 1,000 | $3.05 | $3,050.00 |
TPS55165QPWPRQ1 개요
A buck-boost converter is a non-isolated DC-DC switching regulator within the broader voltage regulator and power management IC hierarchy that maintains a regulated output even when the input voltage crosses the output level. The TPS55165-Q1 uses four integrated switches and a single inductor, with TI's buck-boost overlap control ensuring automatic, seamless transition between step-down and step-up modes with optimal efficiency and minimal output ripple.
Key features include a wide input voltage range up to 36 V, fixed 5 V or 12 V output selection, 2 MHz switching frequency that allows small inductors and fast transient response, synchronous rectification for high efficiency, and a power-good (PG) pin for rail monitoring. The Q1 designation confirms AEC-Q100 qualification for automotive applications. The same TPS5516x-Q1 family includes the TPS55160-Q1 and TPS55162-Q1, which offer configurable outputs of 5.7 V to 9 V via an external resistive divider, sharing the same package and pinout.
Typical applications include automotive start-stop and cold-crank power conditioning, 12 V battery-rail stabilization, automotive infotainment and cluster displays, and renewable-energy harvesting modules such as the RAK WisBlock RAK19004 green power module, which uses the TPS55165-Q1 to convert solar or hydro power to a fixed 5 V rail.
Design consideration: because it is a boost-type topology, ensure the input pin cannot be shorted to output before the converter starts; TI datasheet SLVSDY1 provides layout and external component guidance.
드롭인 대체품: TPS55165QPWPRQ1 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
TPS55160QPWPRQ1
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TPS55162QPWPTQ1
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TPS55165QPWPRQ1 최대 정격 & 전기적 특성
| 토폴로지 | Single-inductor synchronous buck-boost |
| 입력 전압 범위 | Up to 36 V |
| 출력 전압 | Fixed 5 V or 12 V |
| Output Current | 1 A |
| 스위칭 주파수 | 2 MHz |
| 출력 수 | 1 |
| Control Scheme | Buck-boost overlap control |
| Power Good Pin | Yes (PG) |
| Automotive Qualification | AEC-Q100 (Q1) |
| 패키지 | 20-PowerTSSOP (PWP, 4.40 mm width) |
| 실장 유형 | Surface Mount |
| Family Variants | TPS55160-Q1 / TPS55162-Q1 adjustable 5.7 V to 9 V |
| Rectification | Synchronous |
| Polarity | Positive |
| Application Grade | Automotive |
TPS55165QPWPRQ1 핀 구성
| 핀 1 | BOOT — Bootstrap for high-side gate driver (via capacitor to SW) |
| 핀 2 | VIN — Input supply, up to 36 V |
| 핀 4 | EN — Enable input |
| 핀 5 | SS/TR — Soft-start / tracking |
| 핀 8 | SW1 — Switch node 1 |
| 핀 12 | SW2 — Switch node 2 |
| 핀 15 | VOUT — Regulated output (5 V or 12 V) |
| 핀 16 | VSET — Output voltage selection (5 V / 12 V) |
| 핀 18 | PG — Power-good open-drain output (requires pull-up) |
| 핀 20 | AGND — Analog ground |
일반적인 애플리케이션
TPS55165QPWPRQ1 적합 용도: 6 애플리케이션s: Automotive Start-Stop Power Conditioning, Automotive Infotainment and Display Rails, Solar and Green Energy Harvesting, Industrial 24 V Bus Regulation, USB and Test Equipment 5 V Supplies, Battery-Powered Portable Instruments.
Automotive Start-Stop Power Conditioning
The TPS55165-Q1 regulates a stable 5 V or 12 V rail from a 12 V automotive battery whose voltage swings from cold-crank lows to load-dump transients within its 36 V rating. Its AEC-Q100 qualification meets automotive temperature and reliability requirements, while 2 MHz switching keeps the single inductor small for space-constrained ECUs. The buck-boost overlap control maintains regulation seamlessly as the battery crosses the output threshold, making it ideal for start-stop clusters and body modules.
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Automotive Infotainment and Display Rails
Infotainment head units and digital clusters run from vehicle battery inputs that vary above and below the 5 V logic or 12 V backlight rail. The TPS55165-Q1's fixed 12 V output directly powers display bias rails, and its 1 A output plus power-good pin provides monitored, protected power for display controllers. The 36 V input margin absorbs alternator load-dump events without external surge protection, reducing system cost versus discrete protection circuits.
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Solar and Green Energy Harvesting
The RAK WisBlock RAK19004 Green Power Module uses the TPS55165-Q1 to convert harvested solar, hydro, or wind energy into a fixed 5 V output for ESP32-class and other microcontroller boards. Photovoltaic panel voltage varies with irradiance above and below 5 V, which is exactly where buck-boost overlap control keeps the output regulated. The 2 MHz switching frequency allows a compact inductor suited to small IoT module footprints.
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Industrial 24 V Bus Regulation
Industrial control systems powered from 24 V or unstable rectified DC buses need regulated 5 V and 12 V auxiliary rails. The TPS55165-Q1 accepts inputs up to 36 V and delivers a clean fixed output at 1 A, tolerating bus droop below the output voltage without losing regulation thanks to its buck-boost topology. The PG pin enables supply monitoring in PLC I/O modules, sensors, and field transmitters where rail supervisory reporting is required.
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USB and Test Equipment 5 V Supplies
Test instruments, USB-powered adapters, and bench accessories often draw from sources between 4 V and 36 V, including 12 V wall adapters and vehicle outlets. The TPS55165-Q1 fixed 5 V output at 1 A with synchronous rectification delivers high efficiency and low ripple, while the 2 MHz switching frequency places noise above sensitive analog bands for easy filtering. Its PWP exposed-pad package simplifies thermal design in enclosed adapters.
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Battery-Powered Portable Instruments
Portable instruments powered by 2S-3S Li-ion packs or 12 V SLA batteries benefit from the TPS55165-Q1's ability to regulate 5 V or 12 V as the pack discharges through the output voltage. The fixed-output option removes the feedback divider, and the power-good flag supports low-battery detection in the host MCU. Efficiency from synchronous operation extends runtime, critical for handheld meters and dataloggers used in field service.
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추천 제품 요약
엔지니어링 참조 데이터: TPS55165QPWPRQ1 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | TPS55160QPWPRQ1 | TPS55162QPWPTQ1 | TPS63070QRNMTQ1 |
|---|---|---|---|---|
| Package | 20-PowerTSSOP (PWP) | 20-PowerTSSOP (PWP) - same | 20-PowerTSSOP (PWP) - same | VQFN-HR-9 - different |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Voltage | Fixed 5 V or 12 V | 5.7 V to 9 V adjustable | 5.7 V to 9 V adjustable | 2 V to 22 V adjustable |
| Input Voltage Max | 36 V | 36 V | 36 V | 16 V |
| Output Current | 1 A | 1 A | 1 A | 2 A |
| Automotive Grade (AEC-Q100) | Yes (Q1) | Yes (Q1) | Yes (Q1) | Yes (Q1) |
| Output Configuration | Fixed (no divider needed) | External resistor divider | External resistor divider | External resistor divider |
주요 차별점
- Fixed output, no feedback divider required (vs TPS55160QPWPRQ1)
- 36 V input covers automotive load-dump (vs TPS63070QRNMTQ1)
- Single-inductor buck-boost with overlap control (vs TPS55162QPWPTQ1)
설계 노트
Place the BOOT capacitor close between BOOT and SW1, and keep the four-switch power loop (VIN caps, inductor, VOUT caps) as tight as possible on the PWP package's exposed PowerPAD. TI datasheet SLVSDY1 layout section recommends low-ESR 10 uF-plus ceramic input and output capacitors rated for the 36 V input and solid ground pour under the PowerPAD for thermal relief.
The PG pin is open-drain and needs a pull-up to a valid bias supply; TI E2E forum thread 840709 documents issues when users omit this pull-up for 12 V designs. Also confirm the VSET pin resistor selection for 5 V vs 12 V output - incorrect VSET configuration is the most common bring-up failure. Do not exceed 36 V input including transients.
At high step-down ratios (e.g., 24 V to 5 V at 1 A), synchronous buck-boost conduction through four switches increases losses versus a single buck. Verify junction temperature using theta-JA for the 20-pin PWP with the exposed pad soldered to a copper area per datasheet thermal information; use at least 2x2 via array to ground plane under the PowerPAD.
The 2 MHz switching frequency is above AM band and simplifies input filtering for automotive CISPR-class designs, but still use a small RC snubber on SW nodes if ringing exceeds device ratings. Route the sensitive SS/TR and FB/VSET nodes away from SW traces per the TPS55165Q1-EVM reference layout.
규정 준수 정보
Q1 suffix confirms AEC-Q100 automotive qualification per TI. Detailed RoHS/REACH substance declarations should be obtained from TI product page material certificates.
