产品概述
描述
The VNF9D5SF is a device made using STMicroelectronics VIPower technology. It is intended for driving resistive or inductive loads directly connected to the ground.
The device is protected against voltage transients on the VCC pin. Programming, control, and diagnostics are implemented via the SPI bus. A digital current sense feedback for each channel is provided through an integrated 10-bit ADC. Dedicated trimming bits allow adjusting the ADC reference current.
The device is equipped with 2 outputs controllable via SPI or 2-OTP assignable direct inputs. In whatever operating situation it is always possible to turn off channels quickly by relevant DIx (FAST_OFF < tDIx_off). Real-time diagnostic is available through the SPI bus (open-load, output short to VCC, overtemperature, communication error, power limitation or latch off). The device detects open-load in OFF-state conditions.
The VNF9D5SF embeds the STMicroelectronics proprietary I²t functionality, featuring an intelligent circuit breaking aimed at protecting PCB traces, connectors and wire harness from overheating, with no impact on load transients like inrush currents and capacitance charging. This function is set by two parameters called INOM and tNOM: there are 3 dedicated bits, per each parameter, to set respectively INOM (nominal current) and tNOM (nominal timing). The I²t curve parameters can be individually set per each channel.
The VNF9D5SF can limit the dissipated power to a safe level up to thermal shutdown intervention. Thermal shutdown can be configured as latched off or programmable time limited auto restart.
The output current limitation protects the device in case of overload.
The device enters a fail-safe mode in case of communication loss with the microcontroller, reset of digital memory or watchdog monitoring time-out event. In fail-safe mode, the 2 outputs can be directly controlled by dedicated, assignable direct inputs.
It is also possible to configure the VNF9D5SF in parallel mode (CH0//CH1) through a dedicated OTP bit.
The VNF9D5SF features an operative condition called capacitive charging mode (CCM), which is available in both fail-safe and normal device states and with channels configured in bulb mode.
During the sleep mode, the device is able to support the parking mode functionality. In case one or more OUTPUT pins are pulled up to battery by an external secondary switch (for instance the L99SP08 which is delivering the requested current to the load) the device offers a very low current consumption (ISOFF2). For further information refer to the application note AN6371 - Interaction of L99SP08 with dual (VNF9DxxSF) and quad (VNF9Q20SF) M09 monolithic eFuses.
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所有功能
- AEC-Q100 qualified
- General
- Dual channel with 24-bit ST-SPI for full diagnostic and digital current sense feedback
- Integrated 10-bit ADC for digital current sense
- Integrated PWM engine with independent phase shift and frequency generation (for each channel)
- Standby-on functionality for parking mode - ISOFF2 < 15 μA per channel
- Programmable Bulb/LED mode for all channels
- Advanced limp-home functions for robust fail-safe system
- Very low standby current
- Control through direct inputs and/or SPI
- Compliant with European directive 2002/95/EC
- Capacitive loads charging mode
- QFN 6x6 package with wettable flanks
- Diagnostic functions
- Digital proportional load current sense
- Synchronous diagnostic of overload, short to GND and harness protection
- Asynchronous diagnostic of output shorted to VCC and OFF-state open-load
- Built In Self-Test for ADC and harness protection
- Programmable case overtemperature warning
- Protections
- Full configurable wire harness protection (STi²Fuse)
- Programmable shut off current for overload
- Fast off by DIx
- Load current limitation
- Self-limiting of fast thermal transients
- Latch-off or programmable time limited auto restart (power limitation and overtemperature shutdown)
- Undervoltage shutdown
- Overvoltage clamp
- Load dump protected
- Protection against loss of ground
EDA符号、封装和3D模型
意法半导体 - VNF9D5SF
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符号
封装
3D模型
质量与可靠性
| 料号 | Marketing Status | 包 | 等级规格 | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | 材料声明** |
|---|---|---|---|---|---|---|---|
| VNF9D5SFTR | 批量生产 | VFQFPN 6X6X1 32L P0.5 | 汽车应用 | Ecopack2 | - | - | |
VNF9D5SFTR
Package:
VFQFPN 6X6X1 32L P0.5Material 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。
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样片和购买
| 料号 | 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) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VNF9D5SFTR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
VNF9D5SFTR 批量生产