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Developed Standby Power Module Drastically Reducing Power Loss
Standby Power Module
STM2
Announced on February 15, 2006
STM2
§ Overview
Many home appliances consume certain amount of electricity when their main power is off (or standing by for remote control signal), because their power on/off is switched by their remote controls. The electricity consumed in such status is called "standby power consumption", and power used for this is called "standby power". Standby power efficiency at standby load conventionally has been 40~50% approximately (*1), consuming twice as much power as necessary load.
The power supply circuit technology for this standby power module has changed the idea from the conventional method of "commutating and smoothing AC input, and switching to gain output voltage directly", and by combining 2 power supply circuits and ideally operating the power of each circuit, low loss and high efficiency is enabled. Also, by incorporating into the control unit our in-house-manufactured IC with our original process optimal for reducing power consumption, loss at the control circuit is suppressed to the minimum, and 2mW (*2) consumption power at no load status is made possible.
MITSUMI intend to promote research and development of this circuit technology, and to apply for various power supplies.
*1 Compared with MITSUMI's previous technology/products.
*2 With AC100V/50Hz input

§ Features
1.
Supports worldwide input
2.
Efficiency with light load: 75% or higher
3.
Insulated type and low ripple (50mVp-p or less)
4.
Being in resin case, other parts can be implemented closely.

§ Main specifications
Input voltage
100-240V
Output volume
500mW (3.3V × 150mA)
Output voltage
3.3V and 5V can be supported (5V × 100mA)
Standby power 1
2mW (AC100V/with no load), 5mW (AC240V/with no load)
Standby power 2
45mW (33mW: with 3.3V × 10mA load)
Ripple voltage
50mVp-p or less
External dimensions
35(W) × 57(D) × 22(H) mm
(excluding the terminals)
Note
CE marking acquired (compliant with 60065 standard), with resin case.