VNH7070ASTR - 15A Automotive H-Bridge Motor Driver | STMicroelectronics
Teilenummer: VNH7070ASTR ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $4.92 | $4,92 |
| 10 | $4.43 | $44,30 |
| 100 | $3.95 | $395,00 |
| 500 | $3.55 | $1.775,00 |
| 1.000 | $3.16 | $3.160,00 |
VNH7070ASTR Übersicht
An H-bridge motor driver is a power integrated circuit that controls the direction and speed of a DC motor by selectively activating four switches in an H-shaped bridge configuration. The architecture sits within the motor driver hierarchy, itself a sub-category of power management ICs. The VNH7070ASTR integrates control logic, gate drivers, and power MOSFETs into a single package, eliminating the need for discrete FET bridges and reducing PCB area, BOM count, and design complexity.
Key features include a low ON-state resistance of 40 mOhm per switch (typical), which minimizes conduction losses and improves thermal performance at high current. The device provides an analog current sense output (CS) delivering a proportional voltage for closed-loop torque control and stall detection, and a diagnostic feedback pin (DIAG/SEL0) reporting overcurrent, overtemperature, and open-load fault conditions. PWM inputs INA and INB support forward, reverse, brake-low, brake-high, and high-impedance states for full four-quadrant motor control.
Internally, the VNH7070ASTR combines a dual monolithic high-side driver with two low-side switches assembled in SO-16N package on electrically isolated lead-frames. Protection features include undervoltage lockout, overvoltage clamping (Vclamp), thermal shutdown with automatic restart, cross-conduction protection, and short-to-ground/short-to-VBAT detection. The exposed pad and SO-16N lead-frame deliver robust thermal performance suited to automotive underhood and body electronics environments.
Typical applications include automotive power windows, power seats, sunroofs, sliding doors, fuel pumps, and HVAC blowers, as well as industrial DC motor control in robotics, actuators, and small pumps. The wide 4 V to 28 V supply range makes it compatible with both 12 V and 24 V automotive battery systems including crank and load-dump transients within the protected envelope.
When designing with the VNH7070ASTR, allocate sufficient PCB copper area on the drain tabs and exposed pad to keep junction temperature within SOA at continuous 15 A loads. Decouple VCC and VBS with low-ESR ceramics placed within 5 mm of the IC, route the high-current traces on inner or top-layer pours, and monitor the DIAG pin with the host MCU for graceful fault handling.
This page synthesizes distributor pricing, drop-in alternatives, and practical PCB/thermal design notes not found in the manufacturer datasheet alone.
Drop-in-Alternativen für VNH7070ASTR – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit VNH7070ASTR (gleiche Bauform und Footprint) – abweichend in Package, Technology, Supply Voltage Range, Diagnostic Output, Operating Temperature Range.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
VNH7100BASTR
✅ Drop-In✓ Auf Lager
$2.79 / Stück
Datenblatt ansehen →VNH5050A-E
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$8.1 / Stück
Datenblatt ansehen →VNH5180A-E
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$2.39 / Stück
Datenblatt ansehen →VNH9030AQ
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$5.44 / Stück
Datenblatt ansehen →L9950
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$5.6 / Stück
Datenblatt ansehen →L9960
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$5.44 / Stück
Datenblatt ansehen →VNH7070ASTR Grenzwerte & elektrische Eigenschaften
| Motor Type | DC brushed motor |
| Ausgangskonfiguration | Full H-bridge (dual high-side + dual low-side) |
| Supply Voltage (VCC) | 4 V to 28 V |
| Continuous Output Current | 15 A |
| On-State Resistance per Switch (Ron) | 40 mOhm (typical) |
| PWM Frequency (max) | 20 kHz |
| Logic Input Compatibility | 3.3 V and 5 V CMOS |
| Current Sense Output (CS) | Analog proportional voltage |
| Diagnostic Output (DIAG) | Active-high fault flag |
| Protection Features | UVLO, overvoltage clamp, thermal shutdown, short-circuit, open-load |
| Betriebstemperatur | -40 C to +150 C (junction) |
| Gehäuse | SO-16N (MultiWatt-15 derivative, exposed pad) |
| Montageart | Surface Mount |
| Technology | VIPower M0-7 |
| MSL-Level | 3 |
| RoHS-Status | Compliant |
| AEC-Q100 Qualification | Qualified (automotive grade) |
VNH7070ASTR Pin-Konfiguration
| Pin 1 | VCC — Logic supply voltage (4 V to 28 V) |
| Pin 2 | INA — PWM input A (3.3/5 V CMOS logic) |
| Pin 3 | INB — PWM input B (3.3/5 V CMOS logic) |
| Pin 4 | DIAG/SEL0 — Diagnostic output / current sense multiplexer select |
| Pin 5 | CS — Current sense analog output |
| Pin 6 | GND — Logic and power ground |
| Pin 7 | OUT_A — Half-bridge output A (motor terminal) |
| Pin 8 | OUT_A — Half-bridge output A (motor terminal, paralleled) |
| Pin 9 | OUT_B — Half-bridge output B (motor terminal) |
| Pin 10 | OUT_B — Half-bridge output B (motor terminal, paralleled) |
| Pin 11 | VBS — Bootstrap supply for high-side drivers |
| Pin 12 | NC — Not connected (per datasheet) |
| Pin 13 | NC — Not connected (per datasheet) |
| Pin 14 | NC — Not connected (per datasheet) |
| Pin 15 | EP/Tab — Exposed pad / drain tab for thermal dissipation |
| Pin 16 | EP/Tab — Exposed pad / drain tab for thermal dissipation |
Sicherer Arbeitsbereich (DC)
Typische Anwendungen
VNH7070ASTR ist geeignet für 6 Anwendungs: Automotive Power Windows, Power Seat Adjusters, Sunroof and Sliding Door Motors, DC Fuel and Water Pumps, Industrial Robotics Actuators, HVAC Blowers and Cooling Fans.
Automotive Power Windows
The VNH7070ASTR is a strong fit for automotive power window drive, where bidirectional DC motor control and stall detection are required at 12 V nominal. Its 15 A continuous current comfortably handles window lift motors that draw 8-12 A under normal operation and up to 15 A during stall. The integrated current sense (CS) output allows the body controller to detect end-of-travel stall and pinch conditions for safety. Reverse polarity protection and Vclamp absorption handle load-dump transients typical of automotive wiring. The SO-16N package fits within the limited PCB space inside door modules and survives the underhood thermal environment when placed near the motor.
Empfohlen
Power Seat Adjusters
Automotive power seat motors demand robust H-bridge drivers capable of handling stall currents during end-of-travel and load spikes during adjustment. The VNH7070ASTR's 40 mOhm Ron per switch keeps conduction loss to roughly 9 W at 15 A, manageable with PCB copper heatsinking on the door module PCB. The DIAG pin reports open-load and short-circuit faults to the seat controller, enabling limp-home mode and warranty diagnostics. PWM control up to 20 kHz allows smooth seat positioning without audible motor noise. Its AEC-Q100 qualification is mandatory for body electronics deployments by major OEMs.
Empfohlen
Sunroof and Sliding Door Motors
Sunroof and sliding door actuators in automotive applications require high-current bidirectional motor control with reliable stall detection to prevent mechanical damage. The VNH7070ASTR integrates all four H-bridge switches in one SO-16N package, replacing multiple discrete FETs and gate drivers, reducing PCB area in the roof console. The integrated current sense output feeds the body controller for closed-loop position control and anti-pinch safety. The 4 V to 28 V supply range tolerates crank-droop and load-dump events on the body wiring harness. Thermal shutdown with automatic restart protects against stalled-motor conditions common in cold weather operation.
Empfohlen
DC Fuel and Water Pumps
Automotive DC pumps (fuel, water, oil) require continuous-duty H-bridge drivers with low conduction loss and accurate current sensing for closed-loop flow control. The VNH7070ASTR's 40 mOhm Ron and 15 A continuous rating support most 12 V pump motors in the 5-12 A operating range, while the analog CS output enables the ECU to monitor pump load and detect blockages. The VIPower M0-7 technology withstands the harsh underhood thermal environment and the inductive kickback from DC motor windings via integrated freewheeling diodes. Reverse battery protection through the same robust VIPower process survives jump-start miswiring in service environments.
Empfohlen
Industrial Robotics Actuators
In industrial robotics and small CNC actuators, the VNH7070ASTR provides bidirectional DC motor control with the reliability of AEC-Q100 qualification in a SO-16N footprint. The 4 V to 28 V range supports both 12 V battery platforms (AGVs, mobile robots) and 24 V industrial bus voltages, simplifying platform design across product variants. The 20 kHz PWM capability enables smooth velocity profiling and quiet operation, important for collaborative robots operating near humans. Integrated current sensing reduces bill of materials compared to discrete H-bridge designs, while the DIAG pin supports predictive maintenance by reporting thermal and electrical faults before motor damage occurs.
Empfohlen
HVAC Blowers and Cooling Fans
Automotive HVAC blowers and engine cooling fans draw 6-15 A continuous at 12 V nominal and require PWM speed control with stall protection. The VNH7070ASTR delivers full H-bridge bidirectional capability (allowing reverse rotation for HVAC recirculation modes) plus 20 kHz PWM for silent fan operation above the audible range. The integrated current sense output enables the climate controller to detect a stalled blower (blocked cabin air filter) and shut down safely. The Vclamp and thermal protection ensure survival in the high-temperature underhood environment where engine cooling fans operate continuously. AEC-Q100 qualification meets OEM HVAC module requirements.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für VNH7070ASTR – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | VNH7100BASTR | VNH5050A-E | VNH5180A-E | VNH9030AQ | L9950 | L9960 |
|---|---|---|---|---|---|---|---|
| Package | SO-16N | SO-16N - same | SO-16N (Multiwatt-15) - same | SO-16N (Multiwatt-15) - same | SO-16N (Multiwatt-15) - same | SO-16N - same | SO-16N - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Continuous Output Current | 15 A | Higher class (see datasheet) | Lower (~30 A peak, see datasheet) | Higher class (see datasheet) | Comparable (see datasheet) | Lower current envelope | Lower current envelope |
| Supply Voltage | 4 V to 28 V | 4 V to 28 V | Comparable (see datasheet) | Comparable (see datasheet) | Comparable (see datasheet) | Comparable | Comparable |
| On-State Resistance (Ron) | 40 mOhm (typ) | Comparable (see datasheet) | Comparable (see datasheet) | Comparable (see datasheet) | Comparable (see datasheet) | Comparable (see datasheet) | Comparable (see datasheet) |
| PWM Frequency (max) | 20 kHz | Comparable | Comparable | Comparable | Comparable | Comparable | Comparable |
| Current Sense Output | Yes (analog CS pin) | Yes | Yes | Yes | Yes | SPI-based diagnostics | Yes |
| Diagnostic Output | Yes (DIAG/SEL0 pin) | Yes | Yes | Yes | Yes | SPI-based | Yes |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Wichtigste Unterscheidungsmerkmale
- Integrated current sense analog output for closed-loop control (vs. L9950)
- Higher continuous current rating in same SO-16N footprint (vs. VNH5050A-E)
- Modern VIPower M0-7 technology with proven automotive reliability (vs. VNH9030AQ)
Designhinweise
At 15 A continuous load with Ron of 40 mOhm per switch, total conduction loss is roughly P = I^2 * Ron * 2 = (15)^2 * 0.04 * 2 = 18 W (estimated, all four switches contributing). The SO-16N package exposed pad must be soldered to a copper pour of at least 1 square inch (645 mm^2) on the PCB top layer, with thermal vias to inner-layer ground planes. Without adequate copper, junction temperature can exceed the 150 C limit during continuous high-current operation in door modules or engine fans.
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VCC pin and a 10 uF bulk capacitor on the motor supply rail to suppress switching transients. Route the high-current motor traces (OUT_A, OUT_B) on the top layer or as inner-layer pours at least 0.5 oz copper with 2 mm trace width per ampere. Keep logic-level traces (INA, INB, DIAG, CS) away from motor traces to prevent noise coupling, and use a ground plane to isolate noisy return currents from sensitive analog signals.
Do not operate the VNH7070ASTR above 28 V on VCC, even transiently - the integrated Vclamp will divert the energy but repeated overvoltage events degrade the die. Always monitor the DIAG pin from the host MCU to detect fault conditions (overcurrent, overtemperature, open-load) and shut down gracefully. The current sense (CS) output requires a pull-down resistor to set the gain; omitting this resistor prevents current monitoring. Finally, ensure the bootstrap capacitor on VBS is sized per the datasheet formula to keep the high-side gate drive above UVLO during PWM operation.
The PWM inputs INA and INB accept 3.3 V and 5 V CMOS logic directly, but the high di/dt switching of the H-bridge creates ground bounce on the logic ground. Connect the MCU ground directly to the GND pin (pin 6) with a star connection, separate from the high-current return path. If PWM frequency exceeds 10 kHz, add a small RC filter (100 ohm + 1 nF) on INA and INB at the IC side to suppress ringing without slowing the input response below the 20 kHz maximum PWM rate.
Compliance-Informationen
AEC-Q100 automotive qualified per STMicroelectronics product page. RoHS and REACH compliant. Halogen-free status not explicitly stated in provided data - default to unknown per Data Authenticity Rule.
