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STMicroelectronics L9907 | Demoboard STEVAL-TTM001V1
5 kW low voltage high current inverter for automotive motor control applications
Overview
| Topology | Other Topology |
| Switching frequency | 20 kHz |
| IC revision | 1 |
Description
L9907 is a smart power device realized in STMicroelectronics advanced BCD-6s technology. It is able to drive all PowerMOS transistors for 3-phase BLDC motor applications. The circuit is suitable to operate in environments with high supply voltage such as double battery. Supply related pins are capable of withstanding up to 90 V. Moreover, the device is able to control the six pre-driver channels independently. In this way it is possible to implement all kinds of electric motor control strategy.The integrated boost regulator provides sufficient gate charge for all PowerMOS down to a battery voltage of 6 V. All pre-drivers have dedicated connections with the MOSFET sources. The device offers programmability for a base gate output current via an external resistor. Moreover, via SPI, it is possible to select among 4 gate output current levels even while the application is running. All channels are protected against short circuit and the device is protected against overtemperature conditions. Moreover, the boost converter implements an over voltage protection to allow safe functionality of pre-drivers in all battery voltage conditions. During over voltage conditions, BST_C voltage is limited by temporarily switching off the boost regulator and pre-drivers are allowed to operate. Boost will be self re-enabled as soon as the output voltage decreases to an acceptable value.The device is equipped with 2 current sense amplifiers. Both have SPI selectable amplifier gain (10, 30, 50 and 100) and output offset voltage level in order to allow max flexibility for phase or ground current sense strategy. All I/O pins are 35 V compatible. Full diagnostic is available through SPI. The device is available in TQFP64. The device is protected against Shoot Through events.
Features
- Low voltage, high current inverter kit with the following boards (not available separately)
- Insulated metal substrate (IMS) for efficient cooling
- Hosts 36 STH315N10F7 power MOSFETs in the H²PAK-6 (6 switch) package
- Decoupling gate resistors (2.2 Ω)
- 3-shunt resistors ground referred for current sensing (optional)
- 3 NTCs for thermal protection
- Based on L9907 three phase gate driver AEC-Q100 qualified
- 34-pin Motor Control connector
- Full diagnostic via SPI
- Current sense amplifiers
- overvoltage, undervoltage and overcurrent with VDS drop monitoring, overtemperature and shutdown
- Programmable gate current capability
- Bulk capacitor board
- Current sensing board
Typical applications
- 3-phase BLDC motor applications
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | ISAT(A) | RDC(mΩ) | fres(MHz) | Size | Version | Mount | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(Ω) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-LQS SMT Power Inductor, 3.3 µH, 2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LQS SMT Power Inductor | Inductance3.3 µH | Rated Current2 A | Saturation Current2.9 A | DC Resistance55 mΩ | Self Resonant Frequency56 MHz | Size4018 | – | MountSMT | – | – | – | – | – | – | ||||
| WE-LQS SMT Power Inductor, 15 µH, 1.45 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LQS SMT Power Inductor | Inductance15 µH | Rated Current1.45 A | Saturation Current1.9 A | DC Resistance125 mΩ | Self Resonant Frequency24 MHz | Size6028 | – | MountSMT | – | – | – | – | – | – | ||||
 | WE-PD4 SMT Power Inductor, 47 µH, 1.8 A | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD4 SMT Power Inductor | Inductance47 µH | Rated Current1.8 A | Saturation Current2.14 A | – | Self Resonant Frequency10 MHz | SizeL | – | MountSMT | – | – | – | – | DC Resistance0.19 Ω | – | |||
 | WE-PD SMT Power Inductor, 68 µH, 1.9 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Inductance68 µH | Rated Current1.9 A | Saturation Current2.2 A | – | Self Resonant Frequency8 MHz | Size1050 | VersionPerformance | MountSMT | – | – | – | – | DC Resistance0.132 Ω | – | ||||
 | WE-CBF SMT EMI Suppression Ferrite Bead, –, 1.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | Rated Current1.5 A | – | – | – | Size0603 | VersionSMT | MountSMT | Impedance @ 100 MHz120 Ω | Maximum Impedance180 Ω | Maximum Impedance400 MHz | Rated Current 22000 mA | DC Resistance0.05 Ω | TypeHigh Current | ||||
 | WE-CBF SMT EMI Suppression Ferrite Bead, –, 2 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | Rated Current2 A | – | – | – | Size0805 | VersionSMT | MountSMT | Impedance @ 100 MHz30 Ω | Maximum Impedance55 Ω | Maximum Impedance1000 MHz | Rated Current 23000 mA | DC Resistance0.025 Ω | TypeHigh Current |