Product description: D30V30F9 - step-down converter - 9 V 2.9 A - Pololu 4895
The D30V30F9 step-down converter from Pololu converts an input voltage in the range of 9 V to 45 V to a constant output voltage of 9 V. This module can deliver a continuous output current of up to 2.9 A , with typical efficiency ranging from 80% to 95% , depending on the input voltage and load. Thanks to the switching mode converter (SMPS) technology, the module is much more efficient than traditional linear regulators , especially with large differences between the input and output voltage. The D30V30F9 has built-in protection against reverse polarity up to 40 V, input undervoltage, overcurrent and short circuit, as well as a thermal shutdown function. The module is equipped with a soft start function that limits the starting current and gradually increases the output voltage. Thanks to its compact dimensions (17.8 x 20.3 x 9 mm) and a breadboard-compatible pinout, the controller is easy to integrate into various projects.
D30V30F9 - step-down converter - 9 V 2.9 A - Pololu 4895.
D30V30F9 converter pins.
D30V30F9 converter pins
- VOUT - output voltage 9 V
- GND - system ground
- VIN - input voltage from 9 V to 45 V
- EN - allows you to control the regulator's operation by setting it to low or high
- PG - "Power Good" open-drain pin. Goes low when the regulator output voltage increases more than 7.5% above or drops more than 9% below the nominal voltage (with hysteresis). If this pin is used, a pull-up resistor must be connected.
The set includes a goldpin strip for self-soldering. Using it, you can plug the module directly into the contact plate .
Maximum continuous output current
The maximum output current achieved by the converter depends on the input voltage as well as other factors such as ambient temperature, air flow and heat absorption. The graph shows the maximum output currents that the controller can deliver continuously at room temperature, without air flow and additional heat dissipation.
Maximum output current graph.
Pololu converter efficiency.
Efficiency of the converter system
Efficiency is defined as the ratio of output power to input power (Power out) / (Power in). It is one of the most important parameters of the converter, especially when working with portable energy sources. The D30V30F9 provides typical efficiencies of 80% to 95% , depending on input voltage and load. Thanks to this, you can be sure that the converter operates with the highest possible efficiency, which translates into longer battery life or less heat generation in the system.
Technical specifications of the D30V30F9 converter
- Input voltage: 9V to 45V
- Output voltage: 9V (with an accuracy of 4%)
- Maximum output current: 2.9 A
- Output current in continuous mode: 2 A to 3.5 A
- System efficiency: 80% to 95%
- Switching frequency: ~700 kHz at high loads
- Power good output
- Protections: against overheating, short circuit, overcurrent, soft start function, undervoltage lock, energy saving function
- Two 0.086'' mounting holes for M2 screws
- Dimensions: 17.8 x 20.3 x 9 mm
- Weight: 3.3 g
Set contents
- D30V30F9 - step-down converter - 9 V 2.9 A - Pololu 4895
- Goldpin connectors for contacts
Elements included in the set.
