製品概要
概要
The STACF01A and STACF01B ICs drive and control active clamp flyback converters with non-complementary driving of the active clamp (high-side, HS) switch. It is specifically intended for high performance AC-DC adapters with GaN HEMTS rated up to 100 W and beyond, which are aimed at high efficiency as well as high power density.
The ICs seamlessly change operating mode with loading conditions to optimize efficiency under an extremely wide range of loads: variable frequency with frequency foldback at heavy-medium load, bottom-clamped, load-proportional frequency at light load, burst mode at very light, and no-load.
An automatic adjustment mechanism ensures that the reverse primary current needed to achieve ZVS is properly set for any input/output voltage combination.
This ICs can achieve output voltage regulation from the secondary side via an optocoupler-based feedback.
The ICs are provided with an embedded high-voltage startup circuit that also implements the line voltage monitoring system. The STACF01A also discharges the X capacitors when the converter gets disconnected from the AC power line. The STACF01B is intended for use with DC input, like SMPS with PFC in front or supplied by a DC bus.
The ICs incorporate two low-side low-power drivers intended to drive the inputs of an external high-voltage half-bridge driver ICs or an SiP such as one of the MasterGaN families.
It also provides an extensive set of protection features against primary and secondary side faults (two-level overcurrent, overpower, overload, short circuit, brownout, output overvoltage). A general protection input (active low latch type and active high autorestart) helps implement an external OTP, an external input OVP, or a general-purpose protection.
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特徴
- Non-complementary control of active clamp flyback converter
- Multimode operation optimizes efficiency over a very wide load range
- Up to 500 kHz operating frequency with programmable deadtime
- Automatic reverse current control for ZVS of low-side switch
- ZCD circuit for demagnetization instant detection and OVP setting
- Embedded high-voltage startup and active x-cap discharge circuit
- Integrated buck-boost regulator for wide output voltage range
- Very low quiescent current enables ultra-low no-load input power
- Full set of protection features
- Interface with PFC controller
- Dual low-side driver and enable for easy pairing with MasterGaN family, other types of GaN power IC, or half-bridge driver IC
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STMicroelectronics - STACF01A
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品質 & 信頼性
| 製品型番 | マーケティング･ステータス | パッケージ | グレード | RoHSコンプライアンスグレード | 材料宣誓書** |
|---|---|---|---|---|---|
| STACF01A | 量産中 | QFN5X5X1.2 - 23L MULTIPLE PITCH | インダストリアル | Ecopack2 | |
| STACF01ATR | 量産中 | QFN5X5X1.2 - 23L MULTIPLE PITCH | インダストリアル | Ecopack2 | |
STACF01A
Package:
QFN5X5X1.2 - 23L MULTIPLE PITCHMaterial Declaration**:
STACF01ATR
Package:
QFN5X5X1.2 - 23L MULTIPLE PITCHMaterial 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 | 製品ステータス | Budgetary Price (US$)*/Qty | STから購入 | Order from distributors | パッケージ | 梱包タイプ | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | Transistor Breakdown Voltage (V) (min) | Drain Current (A) (nom) | RDS(on) (Ω) (max) | |
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| STACF01A | | | distributors 販売代理店に在庫がない場合は、STのセールス･オフィスまでお問い合わせください |
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| STACF01ATR | | | distributors 販売代理店に在庫がない場合は、STのセールス･オフィスまでお問い合わせください |
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STACF01A 量産中
販売代理店に在庫がない場合は、STのセールス･オフィスまでお問い合わせください
STACF01ATR 量産中
販売代理店に在庫がない場合は、STのセールス･オフィスまでお問い合わせください
（*）概算用の参考価格（US$）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。