Overview
The TPSM8A29RDGR from Texas Instruments is a highly efficient buck power module designed for point-of-load applications. This module integrates a power inductor, MOSFETs, and basic passives, making it a compact and reliable solution for various high-current applications. The TPSM8A29 supports input voltages from 4 V to 16 V and can deliver up to 15 A of load current. It features Texas Instruments' proprietary D-CAP3™ control mode, which ensures fast load transient response and ease of use without requiring external phase-compensation networks.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4 V to 16 V | V |
| Output Voltage Range | 0.6 V to 5.5 V | V |
| Maximum Output Current | 15 A | A |
| Switching Frequency | 600 kHz, 800 kHz, 1 MHz | kHz |
| Package Type | B3QFN-RDG | - |
| Package Dimensions | 6.5 mm × 7.5 mm × 4.0 mm | mm |
| Junction-to-Ambient Thermal Resistance | 21.6 °C/W | °C/W |
| VCC Undervoltage-Lockout (UVLO) Threshold Voltage | 0.17 V | V |
| Soft-Start Time | 1 to 1.5 ms | ms |
Key Features
- D-CAP3™ control mode for fast load transient response and ease of use without external phase-compensation networks.
- Selectable Forced Continuous-Conduction Mode (FCCM) or auto-skip Eco-mode for high light-load efficiency.
- Programmable current limit with RTRIP.
- Pin-selectable switching frequency: 600 kHz, 800 kHz, 1 MHz.
- Differential remote sense for high output accuracy.
- Programmable soft-start time.
- External reference input for tracking applications.
- Prebiased start-up capability.
- Open-drain power-good output.
- Hiccup for overcurrent (OC) and undervoltage (UV) faults, latch-off for overvoltage (OV) faults.
- Fully RoHS compliant without exemption.
Applications
- Data center switches.
- Core routers.
- Single board computers.
- Optical modules.
Q & A
- What is the input voltage range of the TPSM8A29?
The input voltage range of the TPSM8A29 is from 4 V to 16 V.
- What is the maximum output current of the TPSM8A29?
The TPSM8A29 can deliver up to 15 A of load current.
- What are the available switching frequencies for the TPSM8A29?
The switching frequencies available are 600 kHz, 800 kHz, and 1 MHz.
- How is the switching frequency and operation mode selected on the TPSM8A29?
The switching frequency and operation mode are selected by connecting a resistor from the MODE pin to the AGND pin.
- What is the purpose of the D-CAP3™ control mode in the TPSM8A29?
The D-CAP3™ control mode ensures fast load transient response and ease of use without requiring external phase-compensation networks.
- Does the TPSM8A29 support external compensation networks?
No, the TPSM8A29 does not require external compensation networks due to its D-CAP3™ control mode.
- How is the output voltage set on the TPSM8A29?
The output voltage is set using a voltage-divider network connected to the FB pin.
- What is the function of the SS/REFIN pin on the TPSM8A29?
The SS/REFIN pin serves as both a soft-start function and an external reference input for tracking applications.
- What is the thermal resistance of the TPSM8A29 in the RDG package?
The junction-to-ambient thermal resistance is 21.6 °C/W.
- Is the TPSM8A29 RoHS compliant?
Yes, the TPSM8A29 is fully RoHS compliant without exemption.
