产品概述
描述
The L99MH94 and L99MH92 integrate respectively a quad and a dual half-bridge pre-driver dedicated to control up to eight and four N-channel MOSFETs.
It is intended for DC motor control applications such as automotive power seat control or other applications.
A 24-bit serial peripheral interface (SPI) is used for configuring and controlling the eight half-bridges or four H‑bridge. SPI status registers provide high-level diagnostic information such as supply voltage monitoring, the charge pump voltage monitoring, temperature warning and overtemperature shutdown.
Each gate driver monitors independently its external MOSFET drain-source voltage for fault conditions.
The L99MH94 / L99MH92 support indirect current measurement on external MOSFETs, allowing cost saving and lower system complexity, avoiding the usage of shunt resistors.
A more efficient gate current control of the external MOSFETs, called “three stages gate current”, decreases and optimizes electromagnetic interference (EMI).
Protection features (drain-source monitoring for short circuit detection, overtemperature warning and shutdown, timeout watchdog for MCU control, detailed off-state diagnostic via SPI) ensure the ASIL-B achievement according to ISO 26262 standard.
The L99MH94 is housed in VFQFN48L and VFQFN32L packages with an exposed pad, the L99MH92 is housed in a VFQFN32L package with exposed pad. These packages have wettable flanks for easy visual inspection of the solder joint.
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所有功能
- AEC-Q100 qualified
- ISO26262 compliant, covering ASIL-B safety integrity level
- Quad (L99MH94) and dual (L99MH92) half-bridge, or dual (L99MH94) and single (L99MH92) H-Bridge, pre-driver
- Independent channel driver up to 4 (L99MH94) and 2 (L99MH92) high-side or 4 (L99MH94) and 2 (L99MH92) low-side
- Driving logic permits any H-bridge configuration, pairing different half-bridges, using the internal gate drivers (GHx/SHx/GLx can be associated to any GHy/SHy/GLy)
- Support logic level and standard level MOSFETs
- Control of reverse battery protection MOSFET
- Fully configurable half-bridge driver in case of fault occurrence
- Generator mode for power trunk/tailgate applications
- Supporting indirect current measurement of external MOSFETs
- SPI configurable overvoltage threshold
- Adaptive MOSFET gate control
- Three steps gate control of external HS/LS
- Improved electromagnetic emission
- Programmable gate current up to 120 mA
- Reduced switching losses in PWM mode
- Vds monitoring
- Low IQ (1.05 μA) in reset mode
- High-side and low-side capable of protection and diagnosis
- Two external diodes control, needed for assisting calibration of indirect current measurement, can be used for steady - temperature monitoring
- Drain-source monitoring for short circuit detection
- Overtemperature warning and shutdown
- Timeout watchdog for MCU control
- Detailed off-state diagnostic (open load, short circuit to battery or short circuit to GND) via SPI
- Three PWM inputs
- High-side and low-side PWM capable
- Active freewheeling
- Up to 50 kHz PWM frequency
- Out-of-frame serial peripheral interface (SPI), 24 bits
- QFN package with wettable flanks
- Green product (RoHS compliant)
EDA符号、封装和3D模型
意法半导体 - L99MH92
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符号
封装
3D模型
质量与可靠性
| 产品型号 | Marketing Status | 包 | 等级规格 | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | 材料声明** |
|---|---|---|---|---|---|---|---|
| L99MH92Q5-TR | 批量生产 | VFQFN 5X5X0.9 32+4L WETT. FLANKS | Automotive Safety | Ecopack2 | - | - | |
L99MH92Q5-TR
Package:
VFQFN 5X5X0.9 32+4L WETT. FLANKSMaterial Declaration**:
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
样片和购买
| 产品型号 | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | 包 | 包装类型 | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L99MH92Q5-TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
L99MH92Q5-TR 批量生产