TPSM33625 Synchronous Buck Power Module
Texas Instruments' module is designed to meet low standby power requirements for always-on industrial applications
Texas Instruments' TPSM33625 is a 1.5 A or 2.5 A, 36 V input synchronous step-down DC/DC power module that combines flip chip on lead (FCOL) packaging, power MOSFETs, an integrated inductor, and a boot capacitor in a compact and easy-to-use 3.5 mm x 4.5 mm x 2 mm 11-pin HotRod™ QFN package. The small package technology enhances thermal performance, ensuring high ambient temperature operation. In conjunction with spread spectrum, the device provides excellent EMI performance and can be configured to an output range of 1 V to 15 V with a feedback divider and an operator.
The TPSM33625 is designed to meet low standby power requirements for always-on industrial applications. The auto mode enables frequency foldback when operating at light loads, allowing a no-load current consumption of 1.5 µA at 13.5 V VIN and high light-load efficiency. A seamless transition between the PWM and PFM modes along with low MOSFET ON resistance provide exceptional efficiency across the entire load range. The module uses peak-current-mode architecture with internal compensation to maintain stable operation with minimal output capacitance. The dual random spread spectrum (DRSS) can reduce the external components of the input EMI filter. The RT-pin variant can synchronize or set the frequency between 200 kHz and 2.2 MHz to avoid noise-sensitive frequency bands.
- Functional safety-capable: documentation is available to aid the functional safety system design
- Versatile synchronous buck DC/DC module:
- Integrated MOSFETs, an inductor, a CBOOT capacitor, and a controller
- Wide input voltage range: 3 V to 36 V
- Input transient protection: up to 40 V
- Junction temperature range: -40°C to +125°C
- Package: 4.5 mm x 3.5 mm x 2 mm overmolded
- Frequency adjustable range: 200 kHz to 2.2 MHz using the RT pin
- Suitable for scalable power supplies:
- Pin-compatible with the TPSM365R6 (65 V, 600 mA)
- Ultra-high efficiency across the full load range:
- Efficiency: >88% at 12 V VIN, 5 VOUT, 1 MHz, and 2.5 IOUT
- Efficiency: >87% at 24 VIN, 5 VOUT, 1 MHz, and 2.5 IOUT
- Standby IQ: >1.5 µA at 13.5 VIN
- Optimized for ultra-low EMI requirements:
- DRSS
- FCOL
- Integrated inductor and boot capacitor
- CISPR 11, Class B compliant-capable
- Output voltage and current options:
- Adjustable output voltage range: 1 V to 15 V
- Create a custom design with the WEBENCH® Power Designer
- Factory automation
- Test and measurement
