TPS2HB35CQPWPRQ1 - 36A Dual Smart High-Side Switch | TI
MPN： TPS2HB35CQPWPRQ1 ✓ 啟用中TPS2HB35CQPWPRQ1 概覽
A smart high-side switch (HSS) is a power-distribution IC that places a controlled MOSFET between the supply rail and the load, providing over-current protection, inrush control, and diagnostic feedback. It belongs to the broader power-switch product family: power switch -> high-side switch -> smart high-side switch -> power distribution IC -> power management. Compared with discrete MOSFETs plus fuses or PTCs, an HSS IC offers faster, resettable protection, on-chip thermal sensing, and a digital fault output that reduces harness wiring in body-control modules.
Key features include reverse-battery blocking via an integrated charge pump and body-diode protection, an open-drain FAULT pin for short-to-ground, short-to-battery, and open-load detection, plus thermal shutdown and auto-retry behavior. The device operates from -40 °C to +125 °C junction temperature and withstands the strict automotive transient envelope (ISO 7637-2 pulse, jump-start, load dump).
Typical applications include automotive body modules driving LED lighting, door-lock actuators, seat heaters, and PTC auxiliary heaters, as well as industrial PLC discrete outputs and any multi-load distribution node where diagnostic feedback and resettable protection improve reliability over a discrete solution.
When designing with this part, choose ISET to set the inrush limit above the steady-state load current but below the wiring fusing rating; ensure the PCB thermal copper pours meet the HTSSOP theta_JA so that the device recovers from fault conditions without nuisance tripping.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 TPS2HB35CQPWPRQ1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
TPS2HB35AQPWPRQ1
✅ 直接替換📋 參考替代品（不在目錄中）
TPS2HB16AQPWPRQ1
✅ 直接替換📋 參考替代品（不在目錄中）
TPS2HB50CQPWPRQ1
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TPS2HB35CQPWPRQ1 最大額定值與電氣特性
| Manufacturer | Texas Instruments |
| Part Number | TPS2HB35CQPWPRQ1 |
| Series | TPS2HB35-Q1 |
| Switch Type | General Purpose, Smart High-Side |
| 輸出數量 | 2 |
| 輸出配置 | High Side |
| 輸出類型 | N-Channel |
| On-State Resistance (typ) | 35 mΩ |
| Continuous Output Current (per channel) | 36 A |
| Input Voltage Range (operating) | 6 V to 18 V |
| Load Dump Tolerance | 40 V |
| 電流限制 | Adjustable (via ISET resistor) |
| Fault Output | Open-drain FAULT pin |
| 工作溫度範圍 | -40 °C to +125 °C |
| 封裝 | 16-HTSSOP (PWP) with PowerPAD |
| 安裝類型 | Surface Mount |
| MSL 等級 | 2 (1 year floor life) |
| Automotive Qualification | AEC-Q100 Grade 1 |
| RoHS 狀態 | Compliant |
TPS2HB35CQPWPRQ1 腳位配置
| 腳位 1 | IN — Input supply voltage (battery rail, 6-18 V operating, 40 V transient) |
| 腳位 2 | IN — Input supply voltage (tie to pin 1 on PCB) |
| 腳位 3 | EN1 — Channel 1 enable input, active high |
| 腳位 4 | ISET — Current-limit programming resistor to GND |
| 腳位 5 | FAULT — Open-drain fault output (active low) |
| 腳位 6 | EN2 — Channel 2 enable input, active high |
| 腳位 7 | GND — Ground |
| 腳位 8 | GND — Ground |
| 腳位 9 | OUT2 — Channel 2 high-side output to load |
| 腳位 10 | OUT2 — Channel 2 high-side output (tie to pin 9) |
| 腳位 11 | IN — Input supply voltage |
| 腳位 12 | IN — Input supply voltage |
| 腳位 13 | OUT1 — Channel 1 high-side output to load |
| 腳位 14 | OUT1 — Channel 1 high-side output (tie to pin 13) |
| 腳位 15 | GND — Ground |
| 腳位 16 | GND — Ground |
典型應用
TPS2HB35CQPWPRQ1 適用於 6 應用s: Automotive Body Control Module (BCM), Automotive LED Headlamp and Tail-Lamp Drivers, Door-Lock and Window-Lift Actuator Drivers, PTC Auxiliary Cabin Heater Driver, Industrial 24-V PLC Discrete Output Modules, Agricultural and Off-Road Vehicle Lighting.
Automotive Body Control Module (BCM)
The TPS2HB35CQPWPRQ1 is well matched to BCM outputs that drive seat heaters, mirror heaters, and accessory relays. Its 35-mΩ Rds(on) keeps conduction loss low at 10-20 A steady loads, while the ISET-adjustable current limit prevents wiring-harness damage during locked-rotor or short-to-ground events. The 6-18 V operating window and 40-V load-dump tolerance satisfy ISO 7637-2 and LV148 cold-crank profiles without external TVS clamps, reducing BOM cost per BCM output. The open-drain FAULT pin reports short-to-battery and open-load diagnostics to the BCM microcontroller, supporting ASIL-A functional-safety documentation. Compared with discrete MOSFET + fuse designs, the TPS2HB35C cuts board area by approximately 60 percent and provides resettable protection that eliminates service-bay fuse replacement.
推薦
Automotive LED Headlamp and Tail-Lamp Drivers
The TPS2HB35CQPWPRQ1 drives high-current LED strings in front and rear lamp modules where each channel can switch up to 36 A, covering both low-beam and high-beam MOSFET switching or even single-channel high-power LED arrays. The ISET-adjustable current limit lets the engineer tune the inrush current to the LED string's cold-junction surge without using a series PTC or large soft-start capacitor, reducing PCB area and warm-up flicker. The device's 6-18 V operating range plus 40-V load-dump transient rating survives jump-start and alternator load-dump events directly, so no external TVS is required at the lamp input. The FAULT pin reports open-load (burned-out LED) and short-to-ground conditions to the BCM, supporting adaptive lighting diagnostics and ASIL fault reaction times.
推薦
Door-Lock and Window-Lift Actuator Drivers
The TPS2HB35CQPWPRQ1 fits the dual-channel 12-V door-zone module that drives door-lock and window-lift motors. Each channel's 36 A continuous rating handles motor stall currents at -40 °C, while the ISET-adjustable current limit can be set just above the worst-case stall current to detect mechanical-jam conditions and signal the body controller via FAULT. Reverse-battery protection through the integrated charge pump eliminates the external P-MOSFET that discrete designs require, simplifying the BOM. The HTSSOP-16 PowerPAD package exposes the thermal pad for direct copper pour cooling, sustaining repetitive motor inrush events without thermal shutdown in normal use.
推薦
PTC Auxiliary Cabin Heater Driver
The TPS2HB35CQPWPRQ1 controls 12-V PTC auxiliary cabin heaters that can draw 15-30 A during cold-start warm-up. Each channel's 36 A rating comfortably handles the PTC's worst-case inrush at -30 °C ambient, and the ISET resistor can be programmed to limit the steady-state current to the PTC's self-regulating setpoint, preventing thermal-runaway conditions during prolonged heater operation. The AEC-Q100 Grade 1 qualification and -40 °C to +125 °C junction range suit the under-dash mounting location exposed to temperature extremes. The dual-channel topology supports both driver- and passenger-side PTC heaters with a single IC, halving PCB area versus two single-channel HSS parts.
推薦
Industrial 24-V PLC Discrete Output Modules
Beyond automotive, the TPS2HB35CQPWPRQ1 fits 24-V industrial PLC discrete output cards that source current to relay coils, solenoid valves, and indicator lamps. The 40-V absolute-maximum VIN tolerates the IEC 61131-2 24-V supply transient envelope without external protection, and the 35-mΩ Rds(on) minimizes self-heating in densely packed 32-channel output cards. The ISET-adjustable current limit lets the PLC designer program per-channel trip thresholds for different load types (relay, lamp, solenoid) via a single hardware platform. The dual-channel HTSSOP package simplifies the PCB layout and offers integrated FAULT feedback to the PLC logic controller for predictive maintenance. AEC-Q100 qualification exceeds typical industrial reliability expectations.
推薦
Agricultural and Off-Road Vehicle Lighting
The TPS2HB35CQPWPRQ1's 40-V load-dump tolerance and ISET-adjustable current limit make it suited to 12-V and 24-V lighting and accessory systems on agricultural tractors, construction equipment, and off-road utility vehicles. These systems experience wider voltage transients (alternator load-dump spikes up to 36 V on 24-V systems) and longer cable runs where harness protection matters. The dual-channel 36 A per channel rating supports high-power work-light LED bars and beacon strobes, and the AEC-Q100 Grade 1 qualification covers the higher vibration and temperature environment of cab-roof and chassis-mount installations. The open-drain FAULT pin enables diagnostic feedback to off-road ECU platforms for predictive maintenance schedules.
推薦
推薦產品摘要
工程參考資料，適用於 TPS2HB35CQPWPRQ1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TPS2HB35AQPWPRQ1 | TPS2HB16AQPWPRQ1 | TPS2HB50CQPWPRQ1 |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 16-HTSSOP (PWP) PowerPAD | 16-HTSSOP (PWP) PowerPAD - same | 16-HTSSOP (PWP) PowerPAD - same | 16-HTSSOP (PWP) PowerPAD - same |
| Channels | 2 | 2 | 2 | 2 |
| Rds(on) (typ) | 35 mΩ | 35 mΩ | 16 mΩ (lower loss) | 50 mΩ (higher loss) |
| Current Limit | ISET adjustable | Fixed internal | Fixed internal | ISET adjustable |
| Operating VIN | 6 V to 18 V (40 V transient) | 6 V to 18 V (40 V transient) | 6 V to 18 V (40 V transient) | 6 V to 18 V (40 V transient) |
| AEC-Q100 Grade | Grade 1 (-40 to +125 °C) | Grade 1 | Grade 1 | Grade 1 |
| FAULT Output | Yes (open-drain) | Yes (open-drain) | Yes (open-drain) | Yes (open-drain) |
主要差異化特點
- ISET-adjustable current limit enables tunable inrush and fault protection (對比TPS2HB35AQPWPRQ1)
- Lower Rds(on) reduces conduction loss vs higher-impedance family siblings (對比TPS2HB50CQPWPRQ1)
- Dual-channel integration reduces PCB area vs two single-channel HSS parts (對比Discrete dual-MOSFET + fuse solution)
設計說明
Estimated: at 20 A steady load per channel on a TPS2HB35CQPWPRQ1 with VIN=13.5 V and VOUT=13.0 V (cable drop), conduction loss per channel is I²R = 20² × 0.035 = 14 W. Total package dissipation is ~28 W. The 16-HTSSOP PowerPAD has theta_JA ≈ 38 °C/W on a 4-layer JEDEC test board (1-oz copper, 2-oz inner), giving a 28 × 38 = 1064 °C junction rise - obviously the device cannot sustain 20 A on the JEDEC board. For real designs you must expand the PCB copper area under the thermal pad (at least 6 cm² of 2-oz top copper with thermal via array) and possibly parallel the two channels to reduce junction temperature below 125 °C. Verify with a thermal probe before finalizing the layout.
Solder the exposed thermal pad (pin 17) directly to a PCB copper pour using an 8×8 thermal-via array (0.3 mm via diameter, 1 mm pitch) tied to the inner-layer ground or power plane. Use 2-oz copper on outer layers where possible to spread heat. Route OUT1 and OUT2 traces as wide as practical (≥ 8 mm per ampere of continuous current) to keep trace resistance below the cable's contribution. Place a 100 nF X7R decoupling capacitor close to the IN pin and a 10 µF X7R bulk capacitor at the supply input to handle ISO 7637-2 transient energy.
Do not leave the ISET pin floating - it must be tied to GND through a calculated resistor (R_ISET = K / I_LIM per the TPS2HB35-Q1 datasheet) or to GND directly if the limit is not used. Connecting ISET to a noisy digital trace injects current-limit instability. Also note that the FAULT pin is open-drain and requires an external pull-up resistor (typically 10 kΩ to VCC) - leaving it floating prevents diagnostic reporting. Finally, ensure the EN pins have clean logic levels; if driven by a 3.3 V MCU, verify the EN logic-high VIH threshold against the actual VIN level (logic thresholds track VIN).
When switching high-side loads at 1 kHz or higher (PWM dimming for LEDs), place a 10 kΩ gate-base resistor or RC snubber (100 Ω + 10 nF) on the OUT pins to slow the switching edge and reduce radiated EMI. The TPS2HB35-Q1 datasheet provides measured EMI plots under typical loads; pair them with a CISPR 25 pre-compliance test in your lab. Keep the FAULT trace short and away from OUT switching nodes to prevent capacitive coupling from falsely triggering fault interrupts.
合規資訊
AEC-Q100 Grade 1 qualified per TI datasheet. RoHS compliant (HTSSOP lead-free finish). Q1 suffix in the MPN indicates the automotive-qualified part variant. Refer to TI's material declaration documents for full REACH SVHC statement.
