DRV594
- 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.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | DRV593, DRV594 - +/-3 A High-Efficiency PWM Power Driver datasheet (Rev. C) | 2010年 7月 1日 | |
| User guide | DRV593 and DRV594 PWM Power Driver Evaluation Module (Rev. A) | 2003年 5月 1日 |
設計與開發
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DRV594EVM — DRV594 評估模組 (EVM)
The DRV594 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 (...)
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
| 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
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
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。