製品概要
概要
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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特徴
- 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
推奨コンテンツ
すべてのリソース
| Resource title | バージョン | Latest update |
|---|
Board Manufacturing Specifications (1)
| Resource title | バージョン | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 07 Apr 2021 | 07 Apr 2021 |
BOM (1)
| Resource title | バージョン | Latest update | ||
|---|---|---|---|---|
| 1.0 | 07 Apr 2021 | 07 Apr 2021 |
Schematic Pack (1)
| Resource title | バージョン | Latest update | ||
|---|---|---|---|---|
| 1.0 | 07 Apr 2021 | 07 Apr 2021 |
品質 & 信頼性
| 製品型番 | マーケティング･ステータス | RoHSコンプライアンスグレード | WEEE Compliant | 材料宣誓書** |
|---|---|---|---|---|
| STEVAL-A6986IV2 | 量産中 | Ecopack2 | はい | |
STEVAL-A6986IV2
Package:
Ecopack2Material Declaration**:
(**) st.comで提供している材料宣誓書は、パッケージ･ファミリ内で最も一般的に使用されているパッケージに基づく汎用ドキュメントの場合があります。そのため、特定の製品では100%正確ではない可能性があります。特定の製品情報については、セールスサポートまでお問い合わせください
サンプル & 購入
| 製品型番 | 販売代理店から購入 | STから購入 | コア製品 | 製品ステータス | サプライヤ | ECCN (US) | ECCN (EU) | Country of Origin | Budgetary Price (US$)*/Qty | |
|---|---|---|---|---|---|---|---|---|---|---|
| STEVAL-A6986IV2 | 4 distributors | A6986I | 量産中 | ST | EAR99 | NEC | ITALY | |
（*）概算用の参考価格（US$）です。現地通貨でのお見積りについては、STのセールス･オフィスまたは販売代理店までお問い合わせください。