Product description: D30V30F7 - step-down converter - 7.5 V 3 A - Pololu 4894
The Pololu step-down converter operates with an input voltage ranging from 7.5 V to 45 V. Thanks to the use of pulse converter technology (SMPS), this regulator is much more efficient than traditional linear regulators, especially with large differences between the input and output voltage. The D30V30F7 provides a constant output voltage of 7.5 V with an accuracy of 4% and a typical maximum continuous current capacity of 2 A to 3.5 A , depending on operating conditions. This module is equipped with a range of protection functions such as reverse voltage protection up to 40V, undervoltage lockout, overcurrent protection, short circuit protection and thermal shutdown. Additionally, the soft start function limits the starting current by gradually increasing the output voltage at startup. The regulator also has an integrated "power good" indicator, which informs about the stability of the output voltage. With compact dimensions of 17.8 x 20.3 x 9 mm, the D30V30F7 is easy to integrate into a variety of electronics projects. The set includes a goldpin strip for self-soldering. Using it, you can plug the module directly into the contact plate .
D30V30F7 - step-down converter - 7.5 V 3 A - Pololu 4894.
D30V30F7 converter pins.
D30V30F7 converter pins
- VOUT - output voltage 7.5 V
- GND - system ground
- VIN - input voltage from 7.5 V to 45 V
- EN - allows you to control the regulator's operation by setting it to low or high
- PG - open-drain "Power Good" 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.
Efficiency and output current
Efficiency is defined as the ratio of output power to input power (Power out) / (Power in). This is a very important parameter when working with portable energy sources (batteries and accumulators), where the operating time on one charging cycle is important.
System efficiency chart.
Drop-out voltage chart for the D30V30F7 system.
Typical drop-out voltage
The drop-out voltage in a step-down converter is the minimum difference between the input voltage and the target output voltage that ensures that the intended output voltage is achieved. For example, if a 5V converter has a drop-out voltage of 1V, the input voltage must be at least 6V to guarantee the full 5V output. Generally, the drop-out voltage increases as the output current increases.
Technical specifications of the D30V30F7 converter
- Input voltage: 7.5V to 45V
- Output voltage: 15V (with an accuracy of 4%)
- Maximum output current: 3 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
- D30V30F7 - step-down converter - 7.5 V 3 A - Pololu 4894
- Goldpin connectors for contacts
Elements included in the set.
