AC to DC Constant Power Modules

Designed to power today’s most demanding wireless / IoT applications.

Very different from conventional switch-mode power supplies, the small and durable Bias Power BP constant power modules are a product designer’s dream. They have the widest input and temperature ranges of their class, making them able to tolerate virtually any power line or environmental condition. The output is equally strong & won’t hiccup or shut down when pushed, which means no need to over-specify/add headroom to get the performance that your circuit demands. This means you may be able to use a smaller, less costly power supply than you first thought. 

With no additional EFI/RFI suppression required in most designs, BP modules are the most cost-effective and complete, drop-in solution, ideal for today’s demanding control / wireless / IoT applications.  

  • 100% complete drop-in modular solution, no other engineering or sourcing required!
  • Ultra compact size, saves space
  • No de-rating over full temperature range
  • 30mW no-load power consumption
  • Patented design passes FCC Part 15 / EN55022 Class B EMI / RFI without external filtering
  • Truly universal input voltage – “one SKU for your world” 85VAC up to 375VAC
  • No de-rating over entire operating temperature range (–40C to +85C)
  • UL recognized/CB report available
  • Class II (double insulated)
  • Dual output available with additional 3.3V or 5V for control circuitry

Constant Power Module Matrix

Output Power
Output Voltage #1 (Vo)
at Rated Power
Output Current #1 (Io)
at Rated Power, Amps
Output Current (Ir) for
Voltage #2 (Vr)
If Vr= 3.3V
Output Current (Ir) for
Voltage #2 (Vr)
If Vr= 5.0V
Maximum Current Io + Ir
at Rated Power, Amps
DimensionsAvailable Models
(Click Links Below for Data Sheet)
VAC Input
* Custom order available85 - 265 VAC90 - 308 VAC100 - 375 VAC
12*0.0830.0230.0280.083Contact UsContact UsContact Us

Typical Dimensions: L x W x H : 

  • A: 1.08 x 0.90 x 0.55 in / 27.5 x 22.6 x 13.5mm   
  • B: 1.35 x 1.09 x 0.58 in / 34.3 x 27.7 x 14.7mm   
  • C: 1.90 x 1.31 x 0.78 in / 48.3 x 33.3 x 19.8mm


BPS and BPW Series Exclusive Application Benefits

  • Use the same module worldwide without changes
  • Excellent match for wireless, Internet of Things (IoT) and power-line carrier
  • Speed time to market for your product with agency approved power
  • Design for average load, not peak in applications with duty cycles
  • Ability to charge supercaps without shutdowns
  • “Last gasp” power-down enabling with a supercap, without a battery
  • Fully encapsulated, drop-in modular solution for PCB mounting
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