Product overview
描述
The VNI8200XP is a monolithic 8-channel driver featuring a very low supply current, with integrated SPI interface and high efficiency 100 mA micropower step-down switching regulator peak current control loop mode. The IC, realized in STMicroelectronics™ VIPower™ technology, is intended to drive any kind of load with one side connected to ground. Active channel current limitation combined with thermal shutdown, independent for each channel, and automatic restart, protect the device against overload.Additional embedded functions are: loss of GND protection that automatically turns off the device outputs in case of ground disconnection, undervoltage shutdown with hysteresis, Power Good diagnostic for valid supply voltage range recognition, output enable function for immediate power outputs ON/OFF, and programmable watchdog function for microcontroller safe operation; case overtemperature protection to control the IC case temperature.
The device embeds a four-wire SPI serial peripheral with selectable 8 or 16-bit operations; through a select pin the device can also operate with a parallel interface.
Both the 8-bit and 16-bit SPI operations are compatible with daisy chain connection.
The SPI interface allows command of the output driver by enabling or disabling each channel featuring, in 16-bit format, a parity check control for communication robustness. It also allows the monitoring of the status of the IC signaling Power Good, overtemperature condition for each channel, IC pre-warning temperature detection.
Built-in thermal shutdown protects the chip from overtemperature and short-circuit. In overload condition, the channel turns OFF and ON again automatically after the IC temperature decreases below a threshold fixed by a temperature hysteresis so that junction temperature is controlled. If this condition makes case temperature reaching case temperature limit, TCSD, overloaded channels are turned OFF and restart, non-simultaneously, when case and junction temperature decrease below their own reset threshold. If the case of thermal reset, the channels loaded are not switched on until the junction temperature reset event. Non-overloaded channels continue to operate normally. Case temperature above TCSD is reported through the TWARN open drain pin.
An internal circuit provides a not latched common FAULT indicator reporting if one of the following events occurs: channel OVT (overtemperature), parity check fail. The Power Good diagnostic warns the controller that the supply voltage is below a fixed threshold.
The watchdog function is used to detect the occurrence of a software fault of the host controller. The watchdog circuitry generates an internal reset on expiry of the internal watchdog timer. The watchdog timer reset can be achieved by applying a negative pulse on the WD pin. The watchdog function can be disabled by the WD_EN dedicated pin. This pin also allows the programming of a wide range of watchdog timings.
An internal LED matrix driver circuitry (4 rows, 2 columns) allows the detection of the status of the single outputs. An integrated step-down voltage regulator provides supply voltage to the internal LED matrix driver and logic output buffers and can be used to supply the external optocouplers if the application requires isolation. The regulator is protected against short-circuit or overload conditions by means of pulse-by-pulse current limit with a peak current control loop.
-
All features
- Output current: 0.7 A per channel
- Serial/parallel selectable interface
- Short-circuit protection
- 8-bit and 16-bit SPI Interface for IC command and control diagnostic
- Channel overtemperature detection and protection
- Thermal independence of separate channels
- Drives all type of loads (resistive, capacitive, inductive load)
- Loss of GND protection
- Power Good diagnostic
- Undervoltage shutdown with hysteresis
- Overvoltage protection (VCC clamping)
- Very low supply current
- Common fault open drain output
- IC warning temperature detection
- Channel output enable
- 100 mA high efficiency step-down switching regulator with integrated boot diode
- Adjustable regulator output
- Switching regulator disable
- 5 V and 3.3 V compatible I/Os
- Channel output status LED driving 4x2 multiplexed array
- Fast demagnetization of inductive loads
- ESD protection
- Designed to meet IEC61131-2, IEC61000-4-4, and IEC61000-4-5
电路原理图
You might also like...
精选 视频
Smart drivers with embedded galvanic isolation
Fail-safe digital output drivers for safety critical applications
All tools & software
All resources
| Resource title | Latest update |
|---|
产品规格 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 03 Aug 2015 |
03 Aug 2015
|
工具/软件相关的应用笔记 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 24 May 2016 |
24 May 2016
|
宣传册 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 22 Sep 2020 |
22 Sep 2020
|
手册 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 09 Nov 2020 |
09 Nov 2020
|
EDA Symbols, Footprints and 3D Models
STMicroelectronics - VNI8200XP
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Symbols
Footprints
3D models
质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| VNI8200XP |
批量生产
|
PowerSSO 36 | 工业 | Ecopack2 | |
| VNI8200XPTR |
批量生产
|
PowerSSO 36 | 工业 | Ecopack2 |
(**) 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 | 从分销商订购 | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||
| VNI8200XP | 2 distributors |
批量生产
|
EAR99 | NEC | Tube | PowerSSO 36 | - | - | MALAYSIA | 3.834 / 1k | ||
| VNI8200XPTR | 3 distributors | Free Sample Buy Direct |
批量生产
|
EAR99 | NEC | Tape And Reel | PowerSSO 36 | - | - | MALAYSIA | 3.834 / 1k | |
供货状态
批量生产ECCN (US)
EAR99Budgetary Price (US$)*/Qty
3.834 / 1k