Power Supply and Accurate Current Monitor for Avalanche Photodiode (APD) Biasing Applications

Mar 28 2023
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Key specifications for this reference design are listed below, along with a detailed schematic (Figure 1) and bill of materials (Table 1) for the application.

Design Specifications and Setup

Figure 2

  • Wide, 2.7V to 11V input supply-voltage range
  • 70V output voltage
  • 4mA output current
  • Fixed, 400kHz switching frequency
  • -40°C to +125°C operating temperature range
  • Tiny, 8mm x 12mm circuit footprint

Schematic of the Reference Design

Figure 1. Schematic of the MAX15031 boost converter for FSW = 400kHz (fixed).

Figure

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