Product details

Audio input type PWM Load (Min) (ohms) 1 Iq (Typ) (mA) 4.6 Control interface Shutdown Mode Closed/open loop Closed Analog supply (Min) (V) 2.8 Analog supply (Max) (V) 5.5 Sampling rate (Max) (kHz) 500 Operating temperature range (C) -40 to 85
Audio input type PWM Load (Min) (ohms) 1 Iq (Typ) (mA) 4.6 Control interface Shutdown Mode Closed/open loop Closed Analog supply (Min) (V) 2.8 Analog supply (Max) (V) 5.5 Sampling rate (Max) (kHz) 500 Operating temperature range (C) -40 to 85
HLQFP (VFP) 32 81 mm² 9 x 9
  • ±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
  • Internal or External Clock Sync
  • PWM Scheme Optimized for EMI
  • 9×9 mm PowerPAD™ Quad Flatpack
  • APPLICATIONS
    • Thermoelectric Cooler (TEC) Driver
    • Laser Diode Biasing

PowerPAD is a trademark of Texas Instruments.

  • ±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
  • Internal or External Clock Sync
  • PWM Scheme Optimized for EMI
  • 9×9 mm PowerPAD™ Quad Flatpack
  • APPLICATIONS
    • Thermoelectric Cooler (TEC) Driver
    • Laser Diode Biasing

PowerPAD is a trademark of Texas Instruments.

The DRV591 is a high-efficiency, high-current power amplifier ideal for driving a wide variety of thermoelectric cooler elements in systems powered from 2.8 V to 5.5 V. PWM operation and low output stage on-resistance significantly decrease power dissipation in the amplifier.

The DRV591 is internally protected against thermal and current overloads. Logic-level fault indicators signal when the junction temperature has reached approximately 130°C to allow for system-level shutdown before the amplifier’s internal thermal shutdown circuitry activates. The fault indicators also signal when an over-current event has occurred. If the over-current circuitry is tripped, the DRV591 automatically resets (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 approximately 2.3 V/V.

The DRV591 is a high-efficiency, high-current power amplifier ideal for driving a wide variety of thermoelectric cooler elements in systems powered from 2.8 V to 5.5 V. PWM operation and low output stage on-resistance significantly decrease power dissipation in the amplifier.

The DRV591 is internally protected against thermal and current overloads. Logic-level fault indicators signal when the junction temperature has reached approximately 130°C to allow for system-level shutdown before the amplifier’s internal thermal shutdown circuitry activates. The fault indicators also signal when an over-current event has occurred. If the over-current circuitry is tripped, the DRV591 automatically resets (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 approximately 2.3 V/V.

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Type Title Date
* Data sheet +/-3 A High-Efficiency PWM Power Driver datasheet (Rev. A) 09 May 2002
User guide DRV591 PWM Power Driver Evaluation Module User's Guide (Rev. A) 01 May 2003

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DRV591EVM — DRV591 Evaluation Module (EVM)

The DRV591 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. PWM operation and low output stage on-resistance significantly decrease power dissipation in the amplifier.

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