Overview
The TPSM846C24MOLR is a high-performance, 35-A synchronous buck power module designed by Texas Instruments. This module integrates the controller, power MOSFETs, inductor, and associated components into a rugged, thermally enhanced, surface-mount package. It is ideal for applications requiring high power density and minimal PCB area. The device operates with an input voltage range of 4.5 V to 15 V and can output voltages from 0.5 V to 2 V, making it versatile for various point-of-load requirements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4.5 V to 15 V | V |
| Output Voltage Range | 0.5 V to 2 V | V |
| Output Current | 35 A (single module), up to 70 A (two modules in parallel) | A |
| Switching Frequency | 300 kHz to 1 MHz | kHz |
| Output Voltage Accuracy | ±0.5% | % |
| Package Size | 15 mm × 16 mm (6.4 mm maximum height) | mm |
| Thermal Resistance (Junction to Ambient) | 8.7 °C/W | °C/W |
| Operating Temperature Range (IC Junction) | –40°C to +125°C | °C |
| Operating Temperature Range (Ambient) | –40°C to +105°C | °C |
Key Features
- Pin compatible with TPSM846C23 (PMBus)
- Stackable up to 70 A with current sharing
- Synchronization to an external clock to eliminate beat noise and reduce EMI and EMC
- Differential remote sense for excellent load regulation
- Power-good output and prebias output for monotonic start-up
- Fixed 3-ms soft-start / soft-stop time
- Overcurrent protection and current sensing for accurate current sharing
- Enhanced thermal performance with a junction-to-ambient thermal resistance of 8.7 °C/W
- Meets EN55022 Class A emissions standards
Applications
- Compact PCI / PCI Express / PXI Express
- Broadband and communications infrastructure
- Automated test and medical equipment
- DSP, FPGA, and ASIC point-of-load applications
Q & A
- What is the input voltage range of the TPSM846C24MOLR?
The input voltage range is from 4.5 V to 15 V.
- What is the maximum output current of a single TPSM846C24MOLR module?
The maximum output current of a single module is 35 A.
- Can multiple TPSM846C24MOLR modules be used in parallel?
Yes, two modules can be configured to work in parallel to provide up to a 70-A, two-phase power solution.
- What is the switching frequency range of the TPSM846C24MOLR?
The switching frequency range is from 300 kHz to 1 MHz.
- How accurate is the output voltage of the TPSM846C24MOLR?
The output voltage accuracy is as tight as ±0.5%.
- What is the package size of the TPSM846C24MOLR?
The package size is 15 mm × 16 mm with a maximum height of 6.4 mm.
- Does the TPSM846C24MOLR support synchronization to an external clock?
Yes, it can be synchronized to an external clock to eliminate beat noise and reduce EMI and EMC.
- What thermal performance can be expected from the TPSM846C24MOLR?
The junction-to-ambient thermal resistance is 8.7 °C/W.
- What are the operating temperature ranges for the TPSM846C24MOLR?
The IC junction operating temperature range is –40°C to +125°C, and the ambient operating temperature range is –40°C to +105°C.
- Does the TPSM846C24MOLR meet any specific emissions standards?
Yes, it meets EN55022 Class A emissions standards.
