TPS1HB08BQPWPRQ1 - 40V 8mΩ Smart High-Side Switch | TI
料号： TPS1HB08BQPWPRQ1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.1 | $5.10 |
| 10 | $4.62 | $46.20 |
| 100 | $4.05 | $405.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.1 | $3,100.00 |
| 2,500 | $2.78 | $6,950.00 |
TPS1HB08BQPWPRQ1 概述
A high-side switch is a power-distribution topology that places the switching element between the supply rail and the load, allowing the load to be tied to chassis ground and providing inherent short-to-ground protection. Smart high-side switches extend this with on-die diagnostics and protection. In the system hierarchy, the TPS1HB08BQPWPRQ1 sits inside the power-management subsystem (load driver -> high-side switch -> power distribution IC -> automotive PMIC), enabling ECU designers to replace discrete MOSFETs, fuses, and sense resistors with a single AEC-Q100 qualified device.
Key features include an adjustable current limit (6.4 A to 70 A depending on variant), integrated thermal shutdown, reverse-battery and load-dump protection, open-load detection in on and off states, short-to-ground and short-to-battery diagnostics, and a current-sense analog feedback output. The exposed thermal pad and 8 mΩ on-resistance minimize conduction loss and junction-temperature rise at heavy loads. The device operates across -40°C to +125°C ambient, satisfying under-hood automotive requirements.
Architecturally, the TPS1HB08-Q1 combines a vertical N-channel power MOSFET with charge pump, gate driver, current-sense mirror, and an SPI-compatible or PWM-friendly control interface. The charge pump maintains gate enhancement at low VIN, while the analog CSN pin provides a ground-referenced current proportional to load current for closed-loop monitoring and fault detection.
Typical applications include automotive body electronics such as headlight LED drivers, HVAC blower and fan control, seat and mirror actuators, infotainment power rails, and front-camera heater supplies. It is also used in zone-architect 12-V domain controllers where each high-current rail requires independent protection and diagnostics.
When designing with this device, allocate sufficient PCB copper area to the PowerPAD to keep junction temperature below 150°C under worst-case VIN and ILOAD, and bypass VIN with at least 100 nF plus 10 µF ceramic placed within 5 mm of the pin. Use the CSN sense resistor value to set the analog current-limit threshold for your load.
This page synthesizes distributor pricing, drop-in alternatives, and practical thermal/diagnostic notes that complement the manufacturer datasheet for AEC-Q100 design reviews.
直接替换替代料： TPS1HB08BQPWPRQ1 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
TPS1HB08AQPWPRQ1
✅ 直接替换📋 参考替代料（不在目录中）
TPS1HB08CQPWPRQ1
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TPS1HB16BQPWPRQ1
✅ 直接替换📋 参考替代料（不在目录中）
TPS1HB16AQPWPRQ1
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TPS1HB35BQPWPRQ1
✅ 直接替换📋 参考替代料（不在目录中）
TPS1HB08BQPWPRQ1 最大额定值与电气特性
| Product Type | Smart High-Side Switch |
| Number of Channels | 1 |
| On-Resistance (Rdson) Typical | 8 mΩ |
| Load Current (DigiKey) | 70 A |
| Operating Voltage (Nominal) | 4 V to 18 V |
| Absolute Maximum Load Voltage | 40 V |
| 限流 | Adjustable, 6.4 A to 70 A (variant dependent) |
| 接口 | Logic-level enable, analog CSN current-sense output |
| 封装 | 16-pin HTSSOP (PWP) with PowerPAD |
| 安装类型 | Surface Mount |
| 工作温度 | -40 °C to +125 °C |
| AEC-Q100 Qualification | Qualified (Grade 1) |
| MSL 等级 | MSL Level-3, 260 °C, 168 h |
| RoHS 状态 | RoHS-Exempt / Green |
TPS1HB08BQPWPRQ1 引脚配置
| 引脚 1 | IN — Input voltage / battery supply |
| 引脚 2 | IN — Input voltage / battery supply |
| 引脚 3 | EN — Logic-level enable (active high) |
| 引脚 4 | ILIM — Current-limit threshold setting resistor |
| 引脚 5 | CSN — Analog current-sense output |
| 引脚 6 | FLT — Fault flag (open-drain) |
| 引脚 7 | GND — Ground |
| 引脚 8 | OUT — Switch output to load |
| 引脚 9 | OUT — Switch output to load |
| 引脚 10 | OUT — Switch output to load |
| 引脚 11 | NC — Not connected (per datasheet) |
| 引脚 12 | NC — Not connected (per datasheet) |
| 引脚 13 | NC — Not connected (per datasheet) |
| 引脚 14 | NC — Not connected (per datasheet) |
| 引脚 15 | NC — Not connected (per datasheet) |
| 引脚 16 | PAD — Exposed thermal pad (PowerPAD), tie to GND |
典型应用
TPS1HB08BQPWPRQ1 适用于 6 应用s: Automotive LED Headlight Driver, HVAC Blower and Fan Control, Seat and Mirror Actuator Power, Infotainment Head-Unit Power Rail, Front Camera Heater and ADAS Sensor Power, Zone-Controller 12-V Distribution.
Automotive LED Headlight Driver
The TPS1HB08BQPWPRQ1 is ideally suited for automotive LED headlight and DRL driver power distribution. Its 8 mΩ Rdson minimizes thermal dissipation at typical 5-15 A LED string currents, while the adjustable current limit protects the harness against shorts. The AEC-Q100 Grade 1 qualification and 16-pin HTSSOP PowerPAD package allow placement near the lamp housing. Integrated open-load and short-to-ground diagnostics feed the BCM over LIN or CAN, enabling matrix-LED fault reporting. Placed between the 12-V battery rail and the LED constant-current driver, the high-side switch provides cold-crank ride-through down to 4 V and load-dump survival to 40 V. Designers should de-rate the load to 50% of the 70-A maximum to keep junction rise under 50 °C with a 1-oz copper pour.
推荐
HVAC Blower and Fan Control
The TPS1HB08BQPWPRQ1 serves as a reliable high-side driver for HVAC blower motors, radiator fans, and seat-cooling fans in 12-V body-domain architectures. With 8 mΩ Rdson and a 70-A continuous rating, it handles the inrush current of brushless DC blower motors at startup without external components. The CSN analog output allows closed-loop speed feedback to the HVAC ECU, while adjustable ILIM prevents wiring-harness fires during stalled-rotor events. AEC-Q100 Grade 1 operation from -40 °C to +125 °C supports under-hood mounting. Place the device as close as possible to the connector, with a 100-nF plus 10-µF ceramic bypass on VIN, and use the PowerPAD as the primary heatsink with 1-oz copper pour of at least 200 mm².
推荐
Seat and Mirror Actuator Power
The TPS1HB08BQPWPRQ1 powers seat-adjustment motors, mirror-fold actuators, and sunroof drives in body-electronic modules. Its 8 mΩ Rdson handles peak stall currents up to 30 A while the adjustable current limit clamps inductive kick energy. Reverse-battery and load-dump protection eliminate the need for external TVS diodes on each actuator branch. The 16-pin HTSSOP footprint fits standard body-controller PCBAs, and AEC-Q100 Grade 1 supports passenger-compartment thermal profiles. The CSN output enables stall detection to trigger ECU fault recovery, while the open-load diagnostic verifies harness continuity at every wake-up cycle. This page synthesizes distributor pricing, drop-in alternatives, and practical thermal/diagnostic notes that complement the manufacturer datasheet.
推荐
Infotainment Head-Unit Power Rail
The TPS1HB08BQPWPRQ1 protects infotainment power rails feeding amplifiers, displays, and USB-PD controllers in connected-car head units. Its 8 mΩ Rdson and 70-A continuous current capability support multi-rail distribution up to 12 V at heavy transient loads from audio amplifiers. CSN feedback to the head-unit MPU enables real-time current monitoring and brown-out recovery, while AEC-Q100 qualification satisfies OEM automotive EMC requirements. Place the device upstream of the buck regulators with a 100-nF X7R bypass and 10-µF bulk electrolytic; the PowerPAD exposed thermal pad must be soldered to a continuous 1-oz copper pour for thermal dissipation. The 40-V abs-max rating covers 12-V load-dump transients without external TVS.
推荐
Front Camera Heater and ADAS Sensor Power
The TPS1HB08BQPWPRQ1 powers ADAS front-camera heaters, radar sensor heaters, and lidar window defrosters, where reliable cold-weather operation is critical. AEC-Q100 Grade 1 operation from -40 °C ambient supports the harsh thermal envelope of windshield-mounted camera modules. The 8 mΩ Rdson minimizes voltage drop to the heater element, while the CSN output enables the ADAS ECU to verify heater current during the camera-warming pre-sequence. Integrated short-to-ground protection prevents harness damage from chafed windshield wires. Use a 4-V minimum VIN rating to survive cold-crank events down to 3 V on a 12-V battery, and pair with a dedicated 12-V reverse-polarity FET for full redundant safety.
推荐
Zone-Controller 12-V Distribution
The TPS1HB08BQPWPRQ1 is the building block of next-generation zone-architect 12-V power distribution modules, where each high-current rail requires independent protection and diagnostics. With 8 mΩ Rdson and an adjustable 6.4-70 A current limit, it replaces discrete MOSFETs, fuses, and shunt resistors, reducing BOM by up to 30%. The CSN analog output enables the zone controller to monitor current on each rail without a dedicated AFE chip, while AEC-Q100 Grade 1 and 40-V abs-max cover all automotive transient events. Daisy-chain the high-side switches via the EN/SYNC pins for sequenced power-up, and use the TI Smart-Hub graphical tool to design fault-tree diagnostics. This application is central to software-defined vehicle electrical architectures.
推荐
推荐产品汇总
工程参考数据： TPS1HB08BQPWPRQ1 ——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 | TPS1HB08AQPWPRQ1 | TPS1HB16BQPWPRQ1 | TPS1HB35BQPWPRQ1 |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | HTSSOP-16 (PWP) | HTSSOP-16 (PWP) - same | HTSSOP-16 (PWP) - same | HTSSOP-16 (PWP) - same |
| On-Resistance (Rdson) | 8 mΩ | 8 mΩ | 16 mΩ | 35 mΩ |
| Operating Voltage (nominal) | 4 V to 18 V | 4 V to 18 V | 4 V to 18 V | 4 V to 18 V |
| Absolute Max Load Voltage | 40 V | 40 V | 40 V | 40 V |
| AEC-Q100 Grade | Grade 1 (-40 °C to +125 °C) | Grade 1 | Grade 1 | Grade 1 |
| CSN Current-Sense Output | Yes (analog) | Yes | Yes | Yes |
关键差异点
- Lowest on-resistance in the TPS1HBxx-Q1 family （对比 TPS1HB16BQPWPRQ1)
- AEC-Q100 Grade 1 with full automotive transient immunity （对比 Commercial-grade LDO replacements)
- Analog CSN current-sense eliminates external shunt resistor （对比 TPS1H100BQPWPRQ1 (older 100 mΩ family))
设计说明
Estimated: at 50 A continuous load with 8 mΩ Rdson, conduction loss is P = I² × R = 50² × 0.008 = 20 W. The HTSSOP-16 PowerPAD has a θJA of approximately 35 °C/W on a 1-oz copper pour of 200 mm², yielding a junction rise of 700 °C above ambient which exceeds the 150 °C max. De-rate to ≤35 A continuous on a 1-oz pour, or use a 2-oz 4-layer board with θJA ~20 °C/W to reach 50 A. Always solder the PowerPAD to a continuous ground pour with at least 8 thermal vias to the inner ground plane.
Place a 100-nF X7R ceramic bypass capacitor directly on the IN pins within 5 mm, plus a 10-µF X7R or tantalum bulk capacitor on the same trace. Connect the CSN sense resistor directly to the CSN pin and ADC ground reference to avoid ground-loop errors. Use wide 2-oz copper traces on the IN, OUT, and GND paths to minimize parasitic resistance and inductance. The exposed thermal pad must be soldered to a contiguous copper pour with thermal vias for rated performance.
Do not exceed the 40-V absolute-maximum load voltage even during transient load-dump events above 35 V; place a TVS diode or PTC fuse upstream if your harness is exposed to >40 V surges. Ensure the EN pin is tied high through a 10 kΩ pull-up — floating it can cause indeterminate start-up states. The CSN pin is not a rail — it sources current and must drive a sense resistor to GND, not a high-impedance ADC input directly. Verify ILIM resistor value per the variant-specific table in the datasheet before production.
Route the high-current OUT traces on the top or bottom layer with 2-oz copper and minimum 5 mm width to carry 70 A continuous. Keep the analog CSN trace short and away from switching IN/OUT traces to minimize capacitive coupling. Place the FLT pull-up resistor close to the MPU input and route it on an inner layer surrounded by ground. Add a 100-nF X7R between ILIM and GND if long wires connect to the current-limit setting resistor, to prevent oscillation in noisy environments.
合规信息
RoHS-Exempt / Green per partgenie.ai listing. AEC-Q100 Grade 1 qualified per TI datasheet. REACH status and halogen-free status marked unknown — not present in verified web data.
