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Texas Instruments DRV591VFPR
- Part No.:
- DRV591VFPR
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 32-LQFP Exposed Pad
- Datasheet:
-
DRV591VFPR.pdf
- Description:
- IC PWM PWR DRVR HI-EFF 32-HLQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,599
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Product details
Overview
DRV591VFPR from Texas Instruments is a high-efficiency, ±3-A bridge-tied load (BTL) power amplifier optimized for thermoelectric cooler (TEC) and laser diode biasing in 2.8 V–5.5 V systems. It features fixed 2.34 V/V gain, dual selectable PWM switching frequencies (100 kHz / 500 kHz), over-current/thermal/under-voltage fault reporting via open-drain FAULT0/FAULT1 pins, and integrated protection with automatic reset on over-current events.
For engineers reviewing the DRV591VFPR datasheet, DRV591VFPR pinout, DRV591VFPR application, or DRV591VFPR equivalent, this device delivers precise current-controlled TEC driving with low rDS(on) (65 mΩ typical at 5 V), minimal output offset (14–100 mV), and EMI-optimized PWM architecture - critical for optical module thermal stabilization and precision laser biasing.
Technical Context
The DRV591VFPR implements a fully integrated H-bridge power stage with internal gate drivers, ramp generator, and analog input stage configured for differential or single-ended control. Its closed-loop architecture uses fixed-gain amplification (2.1–2.6 V/V) without external feedback components, simplifying layout while maintaining stability across 60 kHz full-power bandwidth.
Thermal and current protection are implemented via real-time junction sensing and output-stage current monitoring, with fault status decoded into two logic-level open-drain outputs (FAULT0/FAULT1). Switching frequency is set either by internal oscillator (ROSC/COSC) or external clock (INT/EXT mode), supporting synchronization in multi-device systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Output Current | ±3 A continuous - supports high-power TECs up to ~10 W dissipation with proper heatsinking. |
| Supply Voltage Range | 2.8 V to 5.5 V - enables direct operation from single-cell Li-ion or regulated 3.3 V/5 V rails. |
| rDS(on) (High/Low Side) | 65 mΩ typical at 5 V, 25°C - minimizes conduction loss and self-heating during sustained current delivery. |
| Fixed Closed-Loop Gain | 2.34 V/V (2.1–2.6 V/V range) - eliminates external gain-setting resistors and ensures predictable output scaling. |
| Switching Frequencies | 100 kHz or 500 kHz - selectable via FREQ pin; higher frequency reduces filter size, lower frequency improves efficiency at light loads. |
| Fault Reporting | Dual open-drain FAULT0/FAULT1 outputs decode over-current, under-voltage (≤2.8 V), and over-temperature (≥130°C) - enables system-level safety response before thermal shutdown. |
| Input Offset Voltage | 14–100 mV differential - defines minimum resolvable input signal swing for precision bias control. |
Pinout & Package
DRV591VFPR is housed in a 32-pin HLQFP (VFP) package with exposed PowerPAD™ thermal pad (9 mm × 9 mm footprint), rated for –40°C to +85°C ambient operation. The PowerPAD must be soldered to AGND and isolated from PGND per TI layout guidelines to ensure thermal reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT+ (Pins 24–27) | Positive BTL output (4 parallel pins) | Carries high-side switched current to load anode; paralleling reduces trace resistance and thermal stress. |
| OUT– (Pins 14–17) | Negative BTL output (4 parallel pins) | Carries low-side switched current to load cathode; shared routing enables balanced drive for TEC/laser diodes. |
| PGND (Pins 18–23) | High-current power ground (6 pins) | Return path for output current; multiple pins minimize ground bounce and voltage drop under 3-A transients. |
| PVDD (Pins 11–13, 28–30) | High-current supply input (6 pins) | Distributes input power across six connections to reduce IR drop and improve decoupling effectiveness. |
| IN+, IN– (Pins 6, 7) | Differential analog input | Accepts DC or low-frequency control voltage; common-mode range shifts with supply (1.2–3.8 V at 5 V). |
| FAULT0, FAULT1 (Pins 10, 9) | Open-drain fault indicators | Encode three fault states (over-current, under-voltage, over-temperature); require external pull-up ≥5 kΩ. |
| FREQ, INT/EXT (Pins 32, 31) | Frequency selection/control inputs | FREQ sets 100/500 kHz; INT/EXT selects internal oscillator or external clock sync (250 kHz nominal). |
| SHUTDOWN (Pin 8) | Logic-level enable/disable | TTL-compatible; low = shutdown (Iq ≤ 50 µA), high = active; must not float. |
Key Features
| Feature | Design Value |
|---|---|
| High-Efficiency PWM Operation | Reduces power dissipation vs linear amplifiers - e.g., >85% efficiency at 2 W output into 1 Ω load (5 V supply, 500 kHz). |
| Integrated Thermal & Over-Current Protection | Prevents latch-up or damage: FAULT0 asserts at 130°C junction temp; over-current detection trips at >4 A, auto-resets after 3–5 µs. |
| EMI-Optimized Switching Architecture | Dual-frequency PWM with internal ramp generator and external LC filter support (10 µH/10 µF typical) suppresses conducted emissions. |
| PowerPAD™ Thermal Enhancement | 9×9 mm exposed pad connected to AGND lowers θJA to 29.4°C/W - enables 4.1 W power rating on JEDEC 4-layer PCB. |
| Robust Input Stage | ZI = 100 kΩ input impedance; ±1 µA max input bias current; 40 µV integrated noise (1 Hz–10 kHz) - preserves signal integrity in precision bias loops. |
Applications
| Thermoelectric Cooler (TEC) Control | Laser Diode Biasing |
|---|---|
|
Use Scenario: Stabilizing temperature of fiber-optic transceivers or spectroscopic sensors using Peltier elements. IC Role / Device Role / Timing Role: High-current, low-noise BTL driver delivering bidirectional ±3 A to TEC terminals with fast transient response. Use Value: Maintains <±0.1°C thermal stability via precise current control, leveraging 2.34 V/V gain and <100 mV offset for accurate DAC-to-TEC mapping. |
Use Scenario: Providing stable forward bias current to edge-emitting laser diodes in telecom modules. IC Role / Device Role / Timing Role: Low-ripple, high-bandwidth current source with programmable switching frequency to minimize optical noise. Use Value: Enables <0.11% current ripple (at 3 A) using 10 µH/10 µF LC filter - critical for reducing relative intensity noise (RIN) in DFB lasers. |
| Optical Transceiver Thermal Management | Portable Medical Laser Systems |
|
Use Scenario: Compact SFP+/QSFP modules requiring low-profile, high-efficiency TEC control within tight thermal envelopes. IC Role / Device Role / Timing Role: Integrated H-bridge amplifier with PowerPAD thermal interface and shutdown control for space-constrained PCBs. Use Value: Eliminates need for discrete MOSFETs and gate drivers - reduces BOM count by ≥8 components while achieving 4.1 W power rating in 9×9 mm footprint. |
Use Scenario: Battery-powered dermatology or ophthalmic lasers needing safe, responsive current limiting and fault signaling. IC Role / Device Role / Timing Role: Fault-aware current driver with undervoltage lockout (2.8 V threshold) and thermal flagging for patient-safety interlocks. Use Value: FAULT0/FAULT1 status decoding allows microcontroller to halt laser emission within microseconds upon over-temperature or supply brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current BTL amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV592VFPR | Higher 5-A peak current rating; identical pinout and feature set; adds spread-spectrum clocking for enhanced EMI reduction. | Better suited for larger TECs (>15 W) or higher-speed laser modulation where spectral noise suppression is critical. | Select DRV592VFPR when >3 A continuous output or stricter EMI compliance (e.g., CISPR 22 Class B) is required. |
| TPS546D24RVFT | 6-V, 6-A synchronous buck converter with PMBus interface; no integrated H-bridge or analog input - requires external op-amp and MOSFETs for TEC control. | Used in digitally controlled, multi-rail power systems where telemetry and dynamic margining are prioritized over analog simplicity. | Choose TPS546D24RVFT only when system-level digital control, telemetry, and programmable loop response outweigh the added design complexity. |
Compared with DRV592VFPR and TPS546D24RVFT, the DRV591VFPR provides optimal balance of analog simplicity, thermal robustness, and fault visibility for mid-power TEC and laser biasing - requiring no external power switches or digital infrastructure while delivering deterministic ±3-A performance in a production-proven 32-pin QFP.
Availability
DRV591VFPR is available at Aetrix Electronics and suitable for thermoelectric cooler control, laser diode biasing, and optical transceiver thermal management requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial and medical electronics.
Supply support for DRV591VFPR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-reliability power management solutions, with decades of expertise in precision amplifiers and thermal control ICs.
The DRV591VFPR belongs to TI's high-efficiency power amplifier product line, designed specifically for precision current-driven applications like TEC and laser diode control in optical communications and instrumentation systems.
FAQ
What is the maximum continuous output current specification for the DRV591VFPR?
The DRV591VFPR is rated for ±3 A continuous output current under recommended operating conditions (TA = –40°C to 85°C, PVDD = 5 V, proper PCB thermal design). This is confirmed in the Electrical Characteristics table (SLOS389A, p.3) and validated by the PACKAGE DISSIPATION RATINGS (4.1 W at TA = 25°C). Exceeding 3 A triggers over-current fault protection.
Does the DRV591VFPR support both internal and external clock synchronization?
Yes, the DRV591VFPR supports both modes via the INT/EXT pin (Pin 31). When pulled high, it uses the internal oscillator (ROSC/COSC network); when pulled low, it accepts an external 250 kHz clock signal on COSC (Pin 4). This is explicitly defined in the Terminal Functions table (p.4) and APPLICATION INFORMATION section (p.12–13) of the datasheet.
How does the DRV591VFPR report fault conditions, and what do the FAULT0 and FAULT1 pins indicate?
The DRV591VFPR uses two open-drain outputs - FAULT0 (Pin 10) and FAULT1 (Pin 9) - to encode three fault states: over-current (0,0), under-voltage (0,1), and over-temperature (1,0). Normal operation is indicated by (1,1). Each pin requires an external pull-up resistor ≥5 kΩ. This decoding is specified in Table 2 (p.13) and functional block diagram (p.5).
What is the purpose of the PowerPAD in the DRV591VFPR package, and how must it be connected?
The PowerPAD is an exposed thermal pad on the underside of the DRV591VFPR's VFP package, electrically connected to AGND (Pin 2). It must be soldered to a dedicated AGND copper area on the PCB - isolated from PGND - to achieve the rated θJA = 29.4°C/W and 4.1 W power dissipation. Layout guidance is provided in the PCB LAYOUT CONSIDERATIONS section (p.14).
Can the DRV591VFPR operate from a 3.3 V supply, and how does performance change versus 5 V?
Yes, the DRV591VFPR operates from 2.8 V to 5.5 V. At 3.3 V, rDS(on) increases (80–140 mΩ vs. 65 mΩ at 5 V), quiescent current decreases (2–8 mA vs. 2–12 mA), and common-mode input range narrows (1.2–2.1 V vs. 1.2–3.8 V at 5 V). Efficiency curves (Figures 2–3) and rDS(on) vs. temperature plots (Figures 5–6) confirm these trade-offs.
DRV591VFPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-LQFP Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Thermoelectric Cooler
- Current - Supply:
- -
- Voltage - Supply:
- 2.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-HLQFP (7x7)
DRV591VFPR FAQ
1.How can I place an order for DRV591VFPR through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV591VFPR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DRV591VFPR reliable?
The price and inventory of DRV591VFPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV591VFPR is usually 5 days.
3.What payment methods are accepted for DRV591VFPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV591VFPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV591VFPR?
DRV591VFPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV591VFPR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DRV591VFPR?
For technical support, including DRV591VFPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV591VFPR requirements.
6.How does Aetrix verify that DRV591VFPR is sourced from the original manufacturer or authorized distributors?
All DRV591VFPR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DRV591VFPR meets industry standards.
7.What is the process for return or replacement of DRV591VFPR?
All DRV591VFPR units undergo pre-shipment inspection (PSI). If there is an issue with DRV591VFPR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DRV591VFPR part is unused and in its original packaging.
Return procedure for DRV591VFPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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