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[B0505S-1WR3] 5V Input, 5V Output 1W Isolated Power Supply
[B0505S-1WR3] 5V Input, 5V Output 1W Isolated Power Supply - Image 2

[B0505S-1WR3] 5V Input, 5V Output 1W Isolated Power Supply

B0505S-1W-6510V-3990K  is isolated 1W DC-DC converter open-frame power module with a fixed input voltage (5V ±10% ), and a un-regulated output of 5V. Featuring a compact open-frame SIP-4 package, this high-efficiency module operates over a wide -40°C to +85°C temperature range with comprehensive protection including short-circuit auto-recovery, over-current, and over-temperature detection. Its ultra-small PCB footprint makes it ideal for space-constrained applications such as isolated RS-485, CAN, and ADC power supplies.

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Introduction

B0505S-1W-6510V-3990K  is isolated 1W DC-DC converter open-frame power module with a fixed input voltage (5V ±10% ), and a un-regulated output of 5V. Featuring a compact open-frame SIP-4 package, this high-efficiency module operates over a wide -40°C to +85°C temperature range with comprehensive protection including short-circuit auto-recovery, over-current, and over-temperature detection. Its ultra-small PCB footprint makes it ideal for space-constrained applications such as isolated RS-485, CAN, and ADC power supplies.

Functional Block Diagram

B0505S-1W-6510V-3990K module utilizes an isolated push-pull topology,  consisting primarily of a push-pull driver IC,  a center-tapped transformer, and input/ output capacitors. This open-frame product provides an low cost alternative to moulded counterparts.

During operation, the two switching devices conduct alternately in a complementary fashion. When one switch turns on, the input voltage VIN is applied across the corresponding primary half-winding; when the opposing switch conducts, VIN is applied across the other primary half-winding. This alternating excitation magnetizes the transformer core in opposite polarities each half-cycle, transferring energy from the primary to the secondary through magnetic coupling. The induced voltage is then rectified by secondary-side diodes and smoothed by the output filter capacitor to supply the load.

Features

  • Ultra compact SIP package
  • Cost-effective open-frame solution
  • Isolation test voltage: 1.5kVDC
  • Short circuit protection (Auto-recovery)
  • Integrated over-current and over-temperature protection

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