产品概述
描述
The STEVAL-ISA207V1 evaluation board is a step-down switching power supply based on the A7987 regulator in an HTSSOP16 package. It is designed for automotive system battery-powered applications. The output voltage can be set starting from 0.8 V. Almost low drop-out operation, due to the advanced integrated switch management, can be achieved.
The A7987 is a 61 V, 3 A step-down asynchronous switching regulator with embedded high-side power MOSFET is capable of delivering up to 3 A of current, depending on the application conditions.
The embedded switchover feature on the VBIAS pin and the light load management (pulse skipping) are included to maximize power conversion efficiency across the entire load range, and the soft-start current limit threshold and switching frequency can be adjusted according to specific application requirements.
The device includes an internal 250 kHz oscillator that can be set up to 1.5 MHz by changing an on-board resistor. Two A7987 regulators can be synchronized in a 180° out-of-phase configuration for reduced total input RMS current.
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所有功能
- 4.5 V to 60 V input voltage
- Step-down (buck) conversion
- 3.3 V output voltage
- Up to 3 A DC output current
- 500 kHz switching frequency
- 3.5 ms programmed soft-start
- Compliant with ceramic output capacitors
- 180° out-of-phase synchronization available
- Auto recovery overcurrent and thermal protection
- RoHS and China RoHS compliant
- WEEE compliant (2012/19/UE RAEE II)
特别推荐
全部资源
| Resource title | 版本 | Latest update |
|---|
Board Manufacturing Specifications (1)
| Resource title | 版本 | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 12 Apr 2019 | 12 Apr 2019 |
物料清单 (1)
| Resource title | 版本 | Latest update | ||
|---|---|---|---|---|
| 1.0 | 12 Apr 2019 | 12 Apr 2019 |
Schematic Pack (1)
| Resource title | 版本 | Latest update | ||
|---|---|---|---|---|
| 1.0 | 12 Apr 2019 | 12 Apr 2019 |
质量与可靠性
| 产品型号 | Marketing Status | 符合RoHS级别 | WEEE Compliant | 材料声明** |
|---|---|---|---|---|
| STEVAL-ISA207V1 | 批量生产 | Ecopack2 | Yes | |
STEVAL-ISA207V1
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-ISA207V1 | distributors 无法联系到经销商，请联系我们的销售办事处 | A7987 | 批量生产 | ST | EAR99 | NEC | ITALY | |