Overview
The DRV591VFPR is a high-efficiency, high-current power amplifier designed by Texas Instruments. It is ideal for driving a wide variety of thermoelectric cooler elements in systems powered from 2.8 V to 5.5 V. The device features PWM operation and low output stage on-resistance, significantly reducing power dissipation. It is internally protected against thermal and current overloads, with logic-level fault indicators for over-current, thermal, and under-voltage conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Minimum Supply Voltage | 2.8 | V |
| Maximum Supply Voltage | 5.5 | V |
| Nominal Supply Voltage | 3.3 | V |
| Maximum Output Current | ±3 | A |
| Operating Temperature Range | -40 to 85 | °C |
| Package Type | 32-LQFP Exposed Pad | |
| Number of Pins | 32 | |
| Terminal Form | Gull Wing | |
| Terminal Pitch | 0.8 mm | |
| Peak Reflow Temperature | 260 °C | |
| Moisture Sensitivity Level (MSL) | 3 | |
| Built-in Protections | Over Current, Thermal, Under Voltage |
Key Features
- ±3-A Maximum Output Current
- Low Supply Voltage Operation: 2.8 V to 5.5 V
- High Efficiency Generates Less Heat
- Over-Current and Thermal Protection
- Fault Indicators for Over-Current, Thermal and Under-Voltage Conditions
- Two Selectable Switching Frequencies (500 kHz or 100 kHz)
- Internal or External Clock Sync
- PWM Scheme Optimized for EMI
- 9×9 mm PowerPAD Quad Flatpack
Applications
- Thermoelectric Cooler (TEC) Driver
- Laser Diode Biasing
Q & A
- What is the operating voltage range of the DRV591VFPR?
The DRV591VFPR operates from 2.8 V to 5.5 V.
- What is the maximum output current of the DRV591VFPR?
The maximum output current is ±3 A.
- What types of protections are built into the DRV591VFPR?
The device includes over-current, thermal, and under-voltage protections.
- Can the switching frequency of the DRV591VFPR be adjusted?
Yes, the PWM switching frequency can be set to either 500 kHz or 100 kHz.
- How does the DRV591VFPR handle thermal overloads?
The device has logic-level fault indicators that signal when the junction temperature reaches approximately 130°C, allowing for system-level shutdown before internal thermal shutdown.
- What is the package type of the DRV591VFPR?
The package type is 32-LQFP Exposed Pad.
- What is the terminal form of the DRV591VFPR?
The terminal form is Gull Wing.
- What is the peak reflow temperature for the DRV591VFPR?
The peak reflow temperature is 260 °C.
- Is the DRV591VFPR RoHS compliant?
Yes, the DRV591VFPR is RoHS3 compliant and lead-free.
- What are the primary applications of the DRV591VFPR?
The primary applications include driving thermoelectric cooler elements and laser diode biasing.
