产品概述
描述
The STEVAL-A6986IV2 evaluation board is based on ST A6986I (automotive 38 V, 5 W synchronous iso-buck converter for isolated applications).
The primary output voltage can be accurately adjusted, whereas the isolated secondary output is generated by a transformer. No optocoupler is required.
The primary sink capability (typ. 1.9 A) allows a proper energy transfer to the secondary side as well as enables a tracked soft-start of the secondary output.
The control loop is based on a peak current mode architecture and the device operates in forced PWM.
The 300 ns blanking time filters oscillations generated by the transformer leakage inductance and makes the solution more robust.
Pulse by pulse current sensing on both power elements implements an effective constant current protection on the primary side. Due to the primary reverse current limit, the secondary output is protected against short-circuit events. The secondary voltage is stabilized over current by using a power transistor and a shunt voltage reference (TL431).
The evaluation board generates an isolated voltage (around 5 V, easily adjustable), especially suitable for applications requiring a single isolated supply.
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所有功能
- AEC-Q100 qualified
- Operating temperature range: -40 °C to 135 °C for Tj
- Designed for iso-buck topology
- 4 to 38 V operating input voltage
- Primary output voltage regulation
- No optocoupler required
- 1.9 A typical sink peak primary current capability
- Peak current mode architecture in forced PWM operation
- 300 ns blanking time
- 8 µA IQ-SHTDWN
- Adjustable fSW and synchronization
- Embedded primary output voltage supervisor
- Adjustable soft-start time
- Internal primary current limiting
- Overvoltage protection
- RDS(on) HS = 180 mΩ, RDS(on) LS = 150 mΩ
- Thermal shutdown
全部资源
| Resource title | 版本 | Latest update |
|---|
Board Manufacturing Specifications (1)
| Resource title | 版本 | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 07 Apr 2021 | 07 Apr 2021 |
物料清单 (1)
| Resource title | 版本 | Latest update | ||
|---|---|---|---|---|
| 1.0 | 07 Apr 2021 | 07 Apr 2021 |
Schematic Pack (1)
| Resource title | 版本 | Latest update | ||
|---|---|---|---|---|
| 1.0 | 07 Apr 2021 | 07 Apr 2021 |
质量与可靠性
| 产品型号 | Marketing Status | 符合RoHS级别 | WEEE Compliant | 材料声明** |
|---|---|---|---|---|
| STEVAL-A6986IV2 | 批量生产 | Ecopack2 | Yes | |
STEVAL-A6986IV2
Package:
Ecopack2Material 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 | Order from distributors | 从ST订购 | 核心产品 | 供货状态 | 供应商 | ECCN (US) | ECCN (EU) | Country of Origin | Budgetary Price (US$)*/Qty | |
|---|---|---|---|---|---|---|---|---|---|---|
| STEVAL-A6986IV2 | distributors 无法联系到经销商，请联系我们的销售办事处 | A6986I | 批量生产 | ST | EAR99 | NEC | ITALY | |
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