L99ASC03TR - 3-Phase BLDC Motor Pre-Driver | STMicroelectronics
MPN: L99ASC03TR ✓ AktifL99ASC03TR Ringkasan
A brushless DC (BLDC) motor pre-driver is a specialized motor control IC that sits between a microcontroller (MCU) and the external power stage (MOSFETs or IGBTs). It translates low-voltage logic-level signals from the MCU into high-current gate drive signals that control the commutation and speed of a BLDC motor. In the system hierarchy, a BLDC motor pre-driver is a type of motor driver IC, which falls under power management ICs, ultimately part of the broader semiconductor category. The L99ASC03TR integrates the gate driver, voltage regulation, and protection features, reducing external component count and simplifying PCB design.
Key features include a wide operating voltage range from 5.5V to 28V, a programmable gate drive current for optimized switching performance, and a built-in 5V LDO with 200 mA output capability. The device also provides a 3.3V/5V reference voltage with ±1% accuracy, SPI interface for configuration and diagnostics, and comprehensive protection features such as overcurrent, overvoltage, undervoltage, and thermal shutdown. These features ensure robust operation in harsh automotive environments.
The L99ASC03TR employs a flexible architecture that supports both sensored and sensorless BLDC motor control. The gate driver unit can be configured for different external MOSFET/IGBT combinations, and the SPI interface allows real-time adjustment of gate drive strength and protection thresholds. The integrated LDO and reference voltage eliminate the need for separate power management components, reducing system cost and board space.
Typical applications include automotive engine cooling fans, oil pumps, water pumps, HVAC blowers, and industrial BLDC motor drives. The wide input voltage range and automotive-grade robustness make it suitable for 12V and 24V systems. The device is AEC-Q100 qualified, ensuring reliability for automotive use.
When designing with the L99ASC03TR, ensure proper PCB layout with adequate copper area for thermal dissipation, and place decoupling capacitors close to the VCC and LDO output pins. The SPI interface should be configured correctly to set the desired gate drive current and protection thresholds for the specific motor application.
Alternatif penggantian untuk L99ASC03TR — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
L99ASC03
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L99ASC03TR
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Lihat Datasheet →L99ASC03
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L99ASC03TR Rating Maksimal & Karakteristik Listrik
| Motor Type | Brushless DC (BLDC) |
| Number of Phases | 3 |
| Supply Voltage Range | 5.5 V to 28 V |
| Output Current (LDO) | 200 mA |
| Tegangan Referensi | 3.3 V / 5 V (±1%) |
| Antarmuka | SPI |
| Gate Drive Current | Programmable |
| Paket | 48-TQFP-EP (7x7) |
| Tipe Mounting | Surface Mount |
| Rentang Suhu Kerja | -40°C to +150°C |
| AEC-Q100 Qualified | Yes |
| Protection Features | Overcurrent, Overvoltage, Undervoltage, Thermal Shutdown |
| Sensored/Sensorless | Both |
| Status RoHS | Compliant |
Konfigurasi Pin L99ASC03TR
| Pin produk 1 | VCC — Power supply input |
| Pin produk 2 | GND — Ground |
| Pin produk 3 | VREG — 5V LDO output |
| Pin produk 4 | VREF — 3.3V/5V reference output |
| Pin produk 5 | SPI_CS — SPI chip select |
| Pin produk 6 | SPI_CLK — SPI clock |
| Pin produk 7 | SPI_MOSI — SPI master out slave in |
| Pin produk 8 | SPI_MISO — SPI master in slave out |
| Pin produk 9 | GH1 — Gate drive high side phase 1 |
| Pin produk 10 | GL1 — Gate drive low side phase 1 |
| Pin produk 11 | GH2 — Gate drive high side phase 2 |
| Pin produk 12 | GL2 — Gate drive low side phase 2 |
| Pin produk 13 | GH3 — Gate drive high side phase 3 |
| Pin produk 14 | GL3 — Gate drive low side phase 3 |
| Pin produk 15 | CSA_OUT — Current sense amplifier output |
| Pin produk 16 | CSA_IN — Current sense amplifier input |
Aplikasi Umum
L99ASC03TR cocok untuk 6 aplikasis: Automotive Engine Cooling Fan, Automotive Oil Pump, Automotive Water Pump, Automotive HVAC Blower, Industrial BLDC Motor Drive, Automotive Electric Power Steering (EPS).
Automotive Engine Cooling Fan
The L99ASC03TR is ideal for automotive engine cooling fans, where its wide input voltage range (5.5V to 28V) and AEC-Q100 qualification ensure reliable operation in harsh under-hood environments. The integrated 5V LDO (200mA) powers the external MCU, while the gate driver unit controls the BLDC motor's power stage. The SPI interface allows real-time adjustment of gate drive strength to optimize switching performance and reduce EMI. The device's overcurrent, overvoltage, and thermal shutdown protections safeguard the fan motor and electronics against faults. Compared to discrete solutions, the L99ASC03TR reduces component count and PCB area, simplifying the design and improving overall system reliability.
Direkomendasikan
Automotive Oil Pump
The L99ASC03TR is well-suited for automotive oil pumps, providing precise control of the BLDC motor that drives the pump. Its sensorless control capability eliminates the need for Hall sensors, reducing system cost and improving reliability. The integrated 5V LDO (200mA) supplies the MCU, and the 3.3V/5V reference (±1%) ensures accurate analog sensing. The SPI interface enables configuration of gate drive current and protection thresholds, allowing optimization for different oil viscosity and temperature conditions. The device's wide operating temperature range (-40°C to +150°C) and AEC-Q100 qualification make it suitable for engine compartment applications. The compact 48-pin LQFP-EP package fits into space-constrained pump housings.
Direkomendasikan
Automotive Water Pump
The L99ASC03TR is an excellent choice for automotive water pumps, where its integrated gate driver and voltage regulator simplify the design. The device supports both sensored and sensorless BLDC control, allowing flexibility in system architecture. The 5V LDO (200mA) powers the MCU, and the SPI interface provides real-time diagnostics, enabling early detection of faults such as overcurrent or overtemperature. The wide input voltage range (5.5V to 28V) accommodates voltage fluctuations during engine start-stop. The AEC-Q100 qualification ensures long-term reliability in the demanding automotive environment. The compact package and integrated features reduce PCB size and BOM cost, making it a cost-effective solution for water pump applications.
Direkomendasikan
Automotive HVAC Blower
The L99ASC03TR is designed for automotive HVAC blowers, providing efficient and quiet BLDC motor control. Its programmable gate drive current allows optimization of switching speed to minimize acoustic noise and EMI. The integrated 5V LDO (200mA) powers the MCU, and the 3.3V/5V reference (±1%) ensures accurate speed sensing. The SPI interface enables configuration of protection thresholds, such as overcurrent and overtemperature, to protect the blower motor. The device's wide operating temperature range and AEC-Q100 qualification make it suitable for the passenger compartment and under-dash applications. The compact 48-pin LQFP-EP package fits into the limited space available in HVAC units.
Direkomendasikan
Industrial BLDC Motor Drive
The L99ASC03TR is also suitable for industrial BLDC motor drives, offering a wide input voltage range (5.5V to 28V) that accommodates various industrial power supplies. Its sensorless control capability reduces system cost and improves reliability in industrial environments. The integrated 5V LDO (200mA) powers the MCU, and the SPI interface provides real-time diagnostics for predictive maintenance. The device's protection features, including overcurrent, overvoltage, and thermal shutdown, ensure safe operation in demanding industrial settings. The compact package and integrated features simplify PCB design and reduce time-to-market. The AEC-Q100 qualification, while aimed at automotive, also indicates high reliability suitable for industrial applications.
Direkomendasikan
Automotive Electric Power Steering (EPS)
The L99ASC03TR can be used in automotive electric power steering (EPS) systems, where precise and reliable BLDC motor control is critical. Its wide input voltage range (5.5V to 28V) and AEC-Q100 qualification ensure reliable operation in the demanding automotive environment. The integrated 5V LDO (200mA) powers the MCU, and the SPI interface enables real-time adjustment of gate drive current for optimal motor control. The device's protection features, including overcurrent and thermal shutdown, safeguard the EPS motor and electronics. The compact 48-pin LQFP-EP package fits into the limited space available in the steering column. The sensorless control capability reduces system cost by eliminating Hall sensors.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk L99ASC03TR — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | L99ASC03 |
|---|---|---|
| Package | 48-TQFP-EP (7x7) | 48-TQFP-EP (7x7) - same |
| Brand | STMicroelectronics | STMicroelectronics |
| Supply Voltage Range | 5.5V to 28V | 5.5V to 28V |
| LDO Output Current | 200mA | 200mA |
| Reference Voltage | 3.3V/5V (±1%) | 3.3V/5V (±1%) |
| Interface | SPI | SPI |
| AEC-Q100 Qualified | Yes | Yes |
| Packaging | Tape & Reel | Tray |
Diferensiator Kunci
- Integrated 5V LDO with 200mA output (vsL99ASC03)
- Wide input voltage range (5.5V to 28V) (vsL99ASC03)
- AEC-Q100 qualified (vsL99ASC03)
Catatan Desain
Ensure proper PCB layout with adequate copper area for thermal dissipation. Place decoupling capacitors close to the VCC and LDO output pins. Use a 10uF ceramic capacitor on the VCC input and a 10uF ceramic capacitor on the VREG output. Add a 0.1uF ceramic capacitor in parallel for high-frequency noise bypass.
The L99ASC03TR is housed in a 48-pin LQFP-EP package with an exposed pad. For reliable operation, solder the exposed pad to a thermal pad on the PCB with multiple vias to the ground plane. This improves heat dissipation and reduces junction temperature, especially when driving high-current motors.
Do not exceed the maximum input voltage of 28V. Ensure the SPI interface is configured correctly to set the desired gate drive current and protection thresholds. Incorrect SPI settings can lead to inadequate gate drive or false triggering of protection features. Always refer to the datasheet for recommended configuration values.
Informasi Konformitas
RoHS compliant per STMicroelectronics product page. AEC-Q100 qualified for automotive applications.
