A reference design for building an LCD TV or set-top box auxiliary power supply using the low-cost, high-efficiency synchronous buck converter MAX15026

1.5PF SOT23-6 Low Capacitance 5V Breakdown Voltage 6V SRV05

Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin

Single chip microcomputer STM32L151CCU6

MOS power IC full range

Summary:

This application note describes a reference design for building an LCD TV or set-top box auxiliary power supply using the low-cost, high-efficiency synchronous buck converter MAX15026. The reference design produces a 5V, 5A output from a 6.5V to 24V input voltage range.

The following is a list of the main specifications of the reference design, a detailed circuit diagram (Figure 1), and a list of required materials (Table 1).

specification

• Input voltage range: 6.5V to 24V
• Output voltage: 5V
• Output current: 5A
• Output voltage ripple (peak-to-peak): 50mV
• Converter switching frequency: 300kHz
• Overcurrent protection limit: 6A
• Efficiency: > 90% (standard operating mode)

Figure 1. Circuit diagram of the synchronous rectifier buck converter MAX15026 at 300kHz switching frequency

See the uploading documentation for details (click to download)