BPM Series

BPM series is
A series of energy-saving switching power modules with
  • built-in Switching Transformers
  • controls IC
  • control Circuits and Switching Elements (FET)
High full-load efficiency reduces stand-by power requirements.
Attaching the input noise filter, the input rectifier diode and the output smoothing capacitor externally enables the easy creation of power switching with high-efficiency , low standby power.

  1. Most Suitable for 40W or less applications
  2. Easy to design compact AC/DC due to small number of external components
  3. Potential design evaluation time savings ; EMC, open/short circuit testing, etc.
  4. Enables significant reduction in power consumption of no-load and light load
  5. Unique Tamura design insures significant reduction in "buzz" under light conditions for lower noise level
Sample Available

1. Quasi-resonant operations for high efficiency
2. Operations using both frequency reduction and bursts for generation of low-standby power
3. Supports worldwide input and PFC output voltage (Vin: DC110V to 450V)
4. Reinforced insulation between Primary and Secondary (AC3000V guaranteed for one minute)
5. Resin filling is available to reduce audible noise
6. Various built-in protection functions (over-current, over-voltage and over-heating protection)

Standard Compliance
Compliant with required safety standards for information equipment, AV equipment, Industrial equipment and home appliance equipment.


Application Notes (sample)

External Dimensions / Pin Assignment

For detailed information on Tamura's Power Module Technology(Hand Book)

Product Line Up

BPM Part No. Output Voltage Rated Load Output Tolerance Output (Single or Multi) External Type RoHS Compliant Data Sheets Insulation (between Pri-Sec)
BPM0390SJ 3.3V 9A ± 5% Single B32S Y * Reinforced Insulation
BPM0508SJ 5V 8A *
BPM1234SJ 12V 3.4A *
BPM1527SJ 15V 2.7A *
BPM2417SJ 24V 1.7A *
*Data Sheets Coming Soon

Tamura's Power Module Series

SPM series

EPM series

BPM series

Power Module
Product List
- All Series






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