DRV593
- Operation Reduces Output Filter Size and Cost
by 50% Compared to DRV591 - ±3-A Maximum Output Current
- Low Supply Voltage Operation: 2.8 V to 5.5 V
- High Efficiency Generates Less Heat
- Overcurrent and Thermal Protection
- Fault Indicators for Overcurrent, Thermal and
Undervoltage Conditions - Two Selectable Switching Frequencies
- Internal or External Clock Sync
- PWM Scheme Optimized for EMI
- 9×9 mm PowerPAD™ Quad Flatpack Package
- APPLICATIONS
- Thermoelectric Cooler (TEC) Driver
- Laser Diode Biasing
PowerPAD is a trademark of Texas Instruments
The DRV593 and DRV594 are high-efficiency, high-current power amplifiers ideal for driving a wide variety of thermoelectric cooler elements in systems powered from 2.8 V to 5.5 V. The operation of the device requires only one inductor and capacitor for the output filter, saving significant printed-circuit board area. Pulse-width modulation (PWM) operation and low output stage on-resistance significantly decrease power dissipation in the amplifier.
The DRV593 and DRV594 are internally protected against thermal and current overloads. Logic-level fault indicators signal when the junction temperature has reached approximately 128°C to allow for system-level shutdown before the amplifier’s internal thermal shutdown circuitry activates. The fault indicators also signal when an overcurrent event has occurred. If the overcurrent circuitry is tripped, the devices automatically reset (see application information section for more details).
The PWM switching frequency may be set to 500 kHz or 100 kHz depending on system requirements. To eliminate external components, the gain is fixed at 2.3 V/V for the DRV593. For the DRV594, the gain is fixed at 14.5 V/V.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | DRV593, DRV594 - +/-3 A High-Efficiency PWM Power Driver datasheet (Rev. C) | 2010/7/1 | |||
| EVM User's guide | DRV593 and DRV594 PWM Power Driver Evaluation Module (Rev. A) | 2003/5/1 |
設計與開發
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DRV593EVM — DRV593 評估模組 (EVM)
The DRV593 is a high-efficiency, high-current power amplifier ideal for driving a wide variety of thermo-electric cooler elements in systems powered from 2.8 V to 5.5 V. The operation requires only one inductor and capacitor for the output filter, saving significant printed-circuit board area. PWM (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HLQFP (VFP) | 32 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。