TPS61378QWRTERQ1 - 18.5V, 4.8A Sync Boost Converter | TI
料号： TPS61378QWRTERQ1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.57 | $25.70 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
| 3,000 | $1.61 | $4,830.00 |
TPS61378QWRTERQ1 概述
A boost (step-up) converter is a switched-mode DC-DC converter that produces an output voltage higher than its input voltage by storing energy in an inductor during one clock phase and releasing it into the output capacitor during the complementary phase. Boost converters sit in the broader DC-DC converter hierarchy alongside buck, buck-boost, and SEPIC topologies, and they belong to the Power Management IC family that conditions battery or bus voltages for downstream analog, RF, and digital loads.
Key features include integrated synchronous rectification (eliminating an external Schottky diode), an integrated P-MOSFET load-disconnect switch that prevents reverse current flow in shutdown, programmable peak current limit via external resistor, programmable switching frequency from 200kHz to 2.2MHz, internal soft-start, and thermal shutdown. The WQFN-16 RTE package provides a low thermal resistance path and the wettable flank enables automated optical inspection of solder joints.
The architecture combines a high-side synchronous rectifier with a peak-current-mode controller and an internal low-side power MOSFET, achieving high efficiency (>90% at moderate loads) while minimizing external component count. The load-disconnect feature is essential for automotive start-stop and battery-isolated systems where reverse leakage into the source must be blocked during shutdown.
Typical applications include automotive infotainment displays, USB Type-C power delivery boost rails, automotive camera modules, LED driver boost stages, and portable industrial equipment where a higher voltage rail must be generated from a 12V or 5V bus. The AEC-Q100 Grade 1 qualification (operating from -40C to +125C) makes the part specifically suited to harsh automotive environments.
When designing with this device, select the inductor based on the programmed switching frequency and current limit (typical 1.0uH to 4.7uH) and ensure the output ceramic capacitor meets the manufacturer's minimum ESR requirement for stable loop compensation. Pay attention to PCB layout: the input capacitor return, output capacitor return, and PGND pin should all connect to a single low-impedance ground pour directly under the exposed pad to minimize switching noise and thermal rise.
This page synthesizes distributor pricing, AEC-Q100 grade drop-in alternatives, and practical layout guidance not found in the bare manufacturer datasheet.
直接替换替代料： TPS61378QWRTERQ1 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： TPS61378QWRTERQ1 （相同外形与封装尺寸） ——差异在于 Input Voltage Range, Package, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
TPS61378WRTER
✅ 直接替换📋 参考替代料（不在目录中）
TPS61378RWTRQ1
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TPS61288RQQR
✅ 直接替换✓ 有现货
$1.55 / 个
查看数据手册 →TPS61378QWRTERQ1 最大额定值与电气特性
| 拓扑 | Synchronous Boost (Step-Up) |
| 输入电压范围 | 2.3 V to 14 V |
| Maximum Output Voltage | 18.5 V |
| Output Voltage Type | Adjustable (Positive) |
| 输出数量 | 1 |
| Programmable Switching Current Limit | 1 A to 4.8 A |
| Quiescent Current (VIN) | 25 uA |
| Switching Frequency Range | 200 kHz to 2.2 MHz (programmable) |
| Control Mode | Peak Current Mode |
| Load Disconnect | Integrated P-MOSFET |
| 软启动 | Internal |
| 工作温度范围 | -40 C to +125 C |
| 封装 | WQFN-16 (RTE) 3x3 mm wettable flank |
| 安装类型 | Surface Mount |
| Automotive Qualification | AEC-Q100 Grade 1 |
| RoHS 状态 | Compliant |
TPS61378QWRTERQ1 引脚配置
| 引脚 1 | VIN — Input supply voltage (2.3V to 14V) |
| 引脚 2 | EN — Active-high enable input |
| 引脚 3 | RT/FSET — Switching frequency programming resistor |
| 引脚 4 | ILIM — Peak current limit programming resistor |
| 引脚 5 | AGND — Analog ground |
| 引脚 6 | FB — Feedback voltage divider node |
| 引脚 7 | COMP — Compensation network node |
| 引脚 8 | SS — Soft-start programming |
| 引脚 9 | PGND — Power ground |
| 引脚 10 | SW — Switch node (to external inductor) |
| 引脚 11 | SW — Switch node (to external inductor) |
| 引脚 12 | VOUT — Regulated output voltage (up to 18.5V) |
| 引脚 13 | VOUT — Regulated output voltage |
| 引脚 14 | NC — Not connected (per datasheet) |
| 引脚 15 | PG — Power-good open-drain output |
| 引脚 16 | BST — Bootstrap supply for high-side gate driver |
| 引脚 EP | Thermal Pad — Exposed thermal pad - connect to PGND |
典型应用
TPS61378QWRTERQ1 适用于 6 应用s: Automotive Infotainment Display Power Supply, USB Type-C Power Delivery Boost Rail, Automotive Camera Module Power, Automotive LED Driver Boost Front-End, Industrial Portable Equipment Boost, Automotive Sensor and ADAS Power Rail.
Automotive Infotainment Display Power Supply
The TPS61378QWRTERQ1 generates 15V to 18V bias rails for TFT-LCD and OLED automotive displays from the 12V vehicle bus. With up to 18.5V output capability, the part directly drives display bias circuits and LED backlight boost stages without an additional stage. AEC-Q100 Grade 1 qualification ensures reliable operation across -40C to +125C ambient, including under-hood thermal stress. The integrated load-disconnect switch prevents reverse leakage during cold-crank events when the 12V bus can drop below the display rail voltage.
推荐
USB Type-C Power Delivery Boost Rail
The TPS61378QWRTERQ1 boosts a 5V USB VBUS input to the 9V, 12V, or 15V needed for USB-PD 3.0 fixed-mode negotiation. Its 2.3V to 14V input range accommodates the USB-C source input range, while the programmable switching frequency from 200kHz to 2.2MHz allows AM-band avoidance in automotive infotainment systems. The 25uA quiescent current keeps standby drain low on always-powered USB ports, and the integrated synchronous rectification reaches >90% efficiency at moderate loads.
推荐
Automotive Camera Module Power
The TPS61378QWRTERQ1 supplies a clean 12V to 15V rail to surround-view and front-camera image-sensor boards from the 12V automotive bus. Its load-disconnect feature prevents backflow during key-off, which is critical for modules that must not drain the battery when the vehicle is parked. The compact WQFN-16 RTE 3x3 mm footprint fits inside the camera housing alongside the imager PCB. AEC-Q100 Grade 1 qualification supports automotive EMI and thermal stress requirements.
推荐
Automotive LED Driver Boost Front-End
The TPS61378QWRTERQ1 provides the boost front-end that raises the 12V automotive bus to 18V to 20V for high-brightness LED strings used in headlamp and daytime-running-light applications. The 4.8A programmable current limit supports multi-string LED loads at PWM dimming frequencies up to 1kHz. The wettable-flank WQFN-16 package allows automated optical inspection required by Tier-1 automotive lighting OEMs. Synchronous rectification minimizes thermal dissipation at high boost ratios.
推荐
Industrial Portable Equipment Boost
The TPS61378QWRTERQ1 generates a 15V or 18V rail from a single-cell Li-ion (3.0V to 4.2V) for industrial handheld instruments such as barcode scanners, portable test meters, and IoT gateways. The 25uA quiescent current extends battery life during sleep periods, while the integrated load-disconnect prevents reverse leakage into the battery when the device is off. The exposed-pad WQFN-16 package allows thermal dissipation up to 2W on standard 4-layer FR4 without external heatsinking.
推荐
Automotive Sensor and ADAS Power Rail
The TPS61378QWRTERQ1 powers radar, lidar, and ADAS sensor modules that require a stable 12V or 15V rail above the 12V automotive bus to compensate for voltage drops across long harness runs. Its peak-current-mode control provides fast transient response to step-load changes caused by sensor scan pulses, and AEC-Q100 Grade 1 qualification meets the reliability requirements of safety-critical ADAS systems. The integrated soft-start prevents inrush transients on the 12V bus.
推荐
推荐产品汇总
工程参考数据： TPS61378QWRTERQ1 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TPS61378WRTER | TPS61378RWTRQ1 | TPS61288RQQR | TPS61194PWPRQ1 |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | WQFN-16 (RTE) 3x3 mm | WQFN-16 (RTE) 3x3 mm | WQFN-16 (RTE) 3x3 mm | WQFN-16 (RQQ) 3x3 mm | HTSSOP-20 (PWP) - different footprint |
| AEC-Q100 Grade 1 | Yes | No (commercial) | Yes | Yes | Yes |
| Input Voltage Range | 2.3V to 14V | 2.3V to 14V | 2.3V to 14V | 2.7V to 13V | 4.5V to 24V |
| Max Output Voltage | 18.5V | 18.5V | 18.5V | 20V | 45V (LED driver) |
| Peak Current Limit | 1A to 4.8A (programmable) | 1A to 4.8A | 1A to 4.8A | Up to 5.5A | 0.5A per channel |
| Quiescent Current | 25 uA | 25 uA | 25 uA | 60 uA | 200 uA |
| Load Disconnect | Integrated P-MOSFET | Integrated P-MOSFET | Integrated P-MOSFET | True load disconnect | No |
| Switching Frequency Range | 200 kHz to 2.2 MHz | 200 kHz to 2.2 MHz | 200 kHz to 2.2 MHz | 400 kHz to 4 MHz | 100 kHz to 2.5 MHz |
关键差异点
- Integrated load-disconnect P-MOSFET for true output isolation （对比 TPS61194PWPRQ1)
- Programmable 1A to 4.8A peak current limit （对比 TPS61288RQQR)
- Lowest quiescent current in TI boost family （对比 TPS61194PWPRQ1)
设计说明
Place the input ceramic capacitor (X7R, 10uF minimum) within 2mm of the VIN pin and PGND pin. The exposed thermal pad (EP) MUST be soldered to a copper pour of at least 25mm x 25mm on the top layer with at least 8 thermal vias to the inner/ground plane for adequate heat extraction. The SW node traces should be short and wide to minimize EMI and switching loss. According to TI layout guidelines, the AGND and PGND should connect at a single point under the exposed pad to avoid ground bounce coupling into the sensitive feedback node.
Estimated: At VIN=12V, VOUT=18V, IOUT=1A, the TPS61378QWRTERQ1 dissipates approximately (VOUT - VIN) * IOUT / efficiency = 6W * 0.85 efficiency = ~7W. With a WQFN-16 RTE package theta_JA of approximately 35 C/W on a 4-layer 1oz PCB, the junction temperature would rise ~245C above ambient - well above the 125C automotive limit. For sustained high-power operation, the input voltage must be close to the output voltage (boost ratio near 1:1) or significant copper thermal relief is required. The WQFN-16 RTE package is intended for moderate-power designs where VIN approaches VOUT.
Common pitfalls when using the TPS61378QWRTERQ1: (1) Exceeding the 18.5V VOUT absolute maximum will damage the internal synchronous rectifier and load-disconnect FET - verify feedback divider resistor values before power-up. (2) Using an inductor with insufficient saturation current rating causes the ILIM comparator to mis-trigger at high transients; choose an inductor with Isat >= 1.3x the programmed ILIM. (3) Omitting the bootstrap capacitor on the BST pin prevents high-side drive and causes no switching; always place a 100nF ceramic from BST to SW. (4) Not connecting the exposed thermal pad to PGND results in poor thermal performance and may trigger thermal shutdown at lower than expected power levels.
To minimize EMI in automotive AM-band-sensitive applications, program the switching frequency above 1.8MHz or below 540kHz using the RT/FSET resistor. According to TI application guidance, a small RC snubber (2.2 ohm + 1nF) across the low-side FET can reduce SW-node ringing by 30-40%. Use a shielded inductor and keep the SW node loop area (SW-to-inductor-to-output-cap) to a minimum to limit radiated emissions.
合规信息
AEC-Q100 Grade 1 qualified per TI product page. RoHS and REACH compliant per TI product specifications. WQFN-16 RTE package uses wettable flank for automotive AOI.
