Power Management
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Power Management STORAGE PRODUCTS

Toshiba offers various semiconductor devices for power supply applications to meet a wide range of customer needs varying from low power to high power. These devices help to save energy and improve power efficiency. Power saving Down sizing High efficiency High reliability * Toshiba’s schottky barrier diodes are silicon-based device

Types and Applications of Switching Power Supplies Types of DC-DC converters embedded in various power supplies Full-Bridge Servers EWS Medical equipment High-capacity power supplies Power supplies for base stations Half-Bridge Power supplies for FPD TVs Power supplies for desktop PCs Uninterruptible power supply (UPS) systems Forward Notebook PC adaptors Information and communications equipment Desktop PCs Power supplies for game consoles Multifunction printers Industrial power supplies Flyback (separately excited) Flyback (self-excited) Chargers for portable products Small adapters The...

Switching Power Supplies AC-DC Flyback Power Supplies Features AC-DC flyback power supplies have a very simple circuit configuration that consists of a minimal part count. They are suitable for low-power power supplies. Application Examples Notebook PC adaptors Power supplies PC peripherals LCD adaptors Chargers for portable products Standby power supplies and small adaptors Circuit Example PFC Control Switch Main Switch Secondary Rectification High-Voltage Power MOSFETs: DTMOS Series -MOSVII Series High-Voltage Power MOSFETs: DTMOS Series -MOS Series/Bipolar Power Transistor Synchronous...

AC-DC Forward Power Supplies Features AC-DC forward power supplies with a relatively simple circuit configuration are widely used for 100-W to 500-W power supply applications. Forward power supplies have less ripple since the capacitor is continuously charged. Compared to flyback power supplies, they exhibit a higher transformer efficiency and thus can provide up to 500 W. Application Examples Notebook PC adaptors Desktop PCs Power supplies for game consoles Information and communications equipment Multifunction printers Industrial power supplies Circuit Example Main Switch Blocking Diode...

Switching Power Supplies AC-DC Half-Bridge Power Supplies Features Resonant half-bridge power supplies are suitable for relatively high-power power supply applications in the range of 150 W to 1 kW. The two transistors connected in series with the input supply voltage reduce the input voltage applied to the primary side of the transformer by half. This makes it possible to use Low-Voltage transistors. Application Examples Power supplies for FPD TVs Desktop PCs Servers Uninterruptible power supplies (UPS) Circuit Example Blocking Diode SiC Schottky Barrier Diode Secondary Rectification...

AC-DC Full-Bridge Power Supplies Features Full-bridge circuits are more complex than half-bridge circuits. However, since full-bridge power supplies provide higher efficiency, they are mainly used for large-capacity applications (with over 1-kW capacity). Because full-bridge power supplies evenly energize transformers bidirectionally, they do not cause magnetization in transformers. Thus, full-bridge power supplies do not need a demagnetization circuit. While the frequency and current ranges of a half-bridge power supply are limited by the capacitor used, full-bridge power supplies are free...

Switching Power Supplies Non-isolated DC-DC Converters Features Circuit Example A DC-DC converter is an electronic circuit which converts a direct current from one voltage level to another. While non-isolated DC-DC converters are primarily used for applications requiring less than 30 W, up to 100 W can be handled by adding a single MOSFET. Many DC-DC converters are deployed in mobile devices and many other equipments that are becoming smaller, lighter and more feature-rich. High-Side MOSFET Application Examples Control Circuit POL modules On-board DC-DC converters CPU and memory power...

Isolated DC-DC Converters Forward: Up to 200 W Features Isolated DC-DC converters are widely used for applications in which there is a large difference between input and output voltages. Isolated half-bridge and full-bridge converters can handle up to 1 kW or so. Isolated DC-DC converters are used in power supplies for cell sites where direct-current distribution is utilized. They are used for both step-down and step-up voltage conversion. DC-DC Conversion DC-DC Conversion (Secondary-Side Switch) U-MOSVIII-H Series (Primary-Side Switch) U-MOSVIII-H Series Application Examples Control...

Linear Power Supplies Toshiba offers a wide selection of linear power supplies designed for various purposes, including CMOS low-dropout (LDO) regulators that remove ripples and provide a constant DC voltage, load switch ICs that conduct and shut off power supplies as necessary to reduce system power consumption, and power multiplexer ICs that simplify control of multiple charging channels. Linear power supplies Switching power supplies CMOS low-dropout (LDO) regulators Series regulators Shunt regulators Power supply control ICs For internal power supply control For charging circuit control...

TCR5AM Series The TCR5AM Series of 500-mA LDO regulators provide low dropout voltage in the low-input-voltage region and thus help improve power efficiency. Dropout Voltage Low output voltage: 0.55 V to 3.6 V Low dropout voltage: 90 mV (typ.) @VOUT = 1.0 V, VBAT = 3.3 V, VBAT IOUT = 300 mA Low current consumption: 35 μA (typ.) VIN External bias power supply voltage (VBAT) With voltage applied to the external bias power supply terminal (VBAT), the TCR5AM Series provides low dropout voltage. VBAT consumes a low current of 35 μA (typ.). Protection circuits Overcurrent protection (OCP), thermal...

Load switch ICs control the supply of electric power to the downstream system loads. Their intended use is to shut off power supplies as their loads enter standby mode. Load switch ICs are power supply ICs fabricated using a CMOS process and contain an output transistor and an output driver. They provide a solution footprint much smaller than load switches composed of discrete components. Moreover, load switch ICs feature low-voltage operation, low on-resistance and low current consumption, and provide additional functions. • Application Examples • Small portable devices (Smartphones,...