Product overview
XBL4005 is a 40V/5A PWM synchronous buck converter launched by Xinbolao, which adopts 300kHz fixed frequency control.
Integrated high-efficiency power MOSFET and multiple protection mechanisms. Its 0.8V~37V output and maximum 100% duty cycle characteristics,
It can cope with complex voltage scenarios in industrial sites and significantly improve the power supply reliability of communication base stations and vehicle power systems. 93% conversion efficiency + short circuit protection enables zero-downtime operation of equipment under severe working conditions.
Product selection and design advantages
4.5V~40V wide voltage input
The wide voltage input has strong compatibility and can adapt to different power supply environments; it provides high flexibility in system design and can effectively cope with voltage fluctuations.
93% peak conversion efficiency
Excellent energy efficiency can significantly reduce cooling requirements during operation, which not only improves long-term service life, but also improves overall system performance and reliability.
Short circuit protection + 8A peak current limit
Short-circuit protection can quickly cut off the power supply when the circuit is short-circuited, preventing excessive short-circuit current from causing damage to the wires, components and equipment in the circuit, effectively protecting the circuit and equipment, and reducing the dangerous situation caused by short-circuit.
Application scenarios
communication equipment
5G micro base station power supply/fiber optic transceiver
energy storage system
Lithium battery buck conversion
Application scenarios
PLC module/sensor power supply
Vehicle electronics
Driving recorder/navigation host power supply center
Pin configuration
(TO2635L package top view)
引脚 | 名称 | Function description |
1 | GND | Low noise grounding: need to be kept away from the freewheeling diode loop independently |
2 | FB | Feedback terminal: external resistor sets the output voltage |
3 | SW | Power output: Connect the inductor and freewheeling diode |
4 | EN |
|
5 | VIN |
|
metal substrate | SW | High current heat dissipation channel: PCB heat dissipation copper required |
Functional block diagram
Typical application circuit
5V/5A industrial sensor power supply solution
This circuit is a typical application circuit of XBL4005. The input voltage is filtered by CIN (220μF/50V) and then connected to the VIN pin of the XBL4005 chip. The chip controls the switching action of the SW pin through the internal circuit, with inductor L1 (33μH/5A) and diode. D1, the output capacitor COUT (330μF/25V) implements the boost function. The output voltage VOUT is divided by the feedback resistors R1 and R2 and then fed back to the FB pin. It is set by the formula VOUT=0.8*(1+R2/R1). It also has overcurrent, overheating and other protection functions.
Efficiency curve
总结
In the field of power management, XinbolexXBL4005 stands out for its excellent performance and wide application prospects.
This 300kHz step-down DC/DC converter can achieve 5A high current and efficient output in a wide voltage range of 4.5V~40V.
Provides engineers with powerful power management solutions. Peak conversion efficiency of up to 93% effectively reduces heat dissipation requirements.
Extend service life and improve system reliability. At the same time, it has short-circuit protection, 8A peak current limit and thermal shutdown functions to ensure the safe operation of the circuit in all aspects.
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