Texas Instruments TPSM8683x 8A Synchronous Buck Modules
Texas Instruments TPSM8683x 8A Synchronous Buck Modules are high-efficiency, high-voltage input, easy-to-use synchronous buck power modules. The devices integrate power MOSFETs, a shielded inductor, and basic passives, minimizing the design size. With a wide operating input voltage range of 4.5V to 28V, this device is an excellent choice for systems powered by 12V, 19V, and 24V power-bus rails. TPSM8683x supports up to 8A continuous output current, whose output voltage is between 0.6V and 5.5V.
The TPSM8683x uses DCAP3 control mode to provide a fast transient response, good line and load regulation, and no requirement for external compensation. It supports low equivalent series resistance (ESR) output capacitors like MLCC. During light load, the TPSM8683x operates in forced continuous conduction mode (FCCM). It provides complete non-latched OV (Undervoltage), UV (Undervoltage), OC (Overcurrent), OT (Overtemperature), and UVLO (Undervoltage lockout) protections combined with power-good indicator and output discharge function features.
The Texas Instruments TPSM8683x are available in a 19-pin 5.0mm × 5.5mm HotRod QFN package, and the junction temperature is specified from –40°C to 150°C.
Features
- 4.5V to 28V input voltage range
- 0.6V to 5.5V output voltage range
- 8A continuous output current capability
- Integrated MOSFETs, inductors, and basic passives
- 0.6V ±1% reference voltage at 25°C
- D-CAP3™ control mode for fast transient response
- FCCM for pseudo-fixed frequency with lower output ripple
- Adjustable soft-start time by SS capacitor
- Built-in output discharge function
- Selectable 800kHz and 1200kHz switching frequency
- Power-good indicator to monitor output voltage
- Supports up to 98% duty operation
- Non-latched protections for UV, OV, OT, and UVLO
- –40°C to +150°C operating junction temperature
- 19-pin 5.0mm×5.5mm QFN HotRod™ package
Applications
- Industrial applications
- Medical applications
- Factory automation and control (IPC, robotics)
- Test and measurements
- Pro audio video
- Space constrained POL for 12V,19V, and 24V power-bus applications
Functional Block Diagram
Related Development Tools
Texas Instruments TPSM86837EVM Evaluation Module (EVM)
The module helps designers evaluate the operation and performance of the TPSM86837 buck regulator.
Texas Instruments TPSM86838EVM Evaluation Module
Configured to evaluate the operation of the TPSM86838 synchronous buck power module.