AC/DC Converter Primary Power Supply Device Catalog Ver.1.1 ROHM Co.,Ltd

Technology Trends in Primary Power Supplies Until now, product manufacturers primarily focused on application circuits and secondary power supplies to improve set energy savings, but in recent years to meet the need for higher efficiencies and lower power consumption designers are beginning to look at primary power supplies as well. In addition, laws and regulations such as Energy Star, CoC, and DoE have spurred interest in power supply design. ROHM proposes total solutions including power supply ICs and peripheral discrete components that leverage our latest proprietary power supply technologies....

To ensure high reliability along with other characteristics such as power supply block efficiency and standby power consumption, it is necessary to consider not only the IC itself but the entire power supply block as well, including discretes and other peripheral components. In addition to ICs and discretes, ROHM proposes total solutions that include peripheral components necessary to achieve the required reliability and power supply characteristics. Please consider this total power supply block circuit for your next design. Product Features and Lineup Shunt Resistors High Reliability Resistors...

Primary Power Supply Product Matrix Lineup (By Power) Search for ROHM primary power supply ICs based on power, application, and/or topology ITEM Applications AC/DC Built-in MOS Consumer Electronics Industrial Equipment Synchronous Rectification Fast Recovery/ Zener Diodes Printers Industrial Equipment Others TVs Audios Industrial Equipment External MOS BM1Q104 (Pseudo-Resonant) BM1P101 (PWM) BM1C102 (PFC+QR) Laser Printers Others Gaming Systems Others 500 to 1,000W Industrial Equipment Others and over Primary Power Supply Device Catalog Under development Under development

AC/DC Converter Product Development Policy 3 Key Parameters (High Reliability • High Efficiency • Low Standby Power) Integrates ROHM’s 650V/800V MOSFET Original burst circuit for light loads High efficiency quasi-resonant circuit Secondary synchronous rectification ① 650V/800V MOSFET ② 650V/800V Start-up Chip ③ Control IC Separation between the high-and low-voltage blocks ◆ X capacitor discharge circuit ◆ Low power startup circuit ◆ Low power circuit technology High reliability design resistant to external overvoltage and surge breakdown The features and development policy of primary power supplies...

Built-in MOS series H Built-in MOS series H i mos i I pfc i I Secondary Synchronous H AC/DC series with (Buck Converter Topology) (PWM Flyback Topology) External MOS series series Rectification IC series Built-in SiC MOSFET Buck Converter Features Applicable Products ■ Overview A broad lineup is available. ■ Packages: SOP8/DIP7/TO220 ■ Output Power: Up to 45W class (depending on power supply specifications) ■ Frequency: 65kHz to 130kHz ■ Multiple protection circuits ■ Technology Trend Reducing standby power consumption has become a major theme. To achieve high efficiency, various models are offered...

Circuit TechnologySignificantly reduces board space Buck converter (achieves transformerless circuit)Advantages • Built-in current sense resistor improves reliability during open/short-circuits • Significantly reduces the number of external parts, decreasing board area while simplifying design • Current flowing into the coil can only be monitored when the MOSFET is ON ^ ROHM’s original protection circuit prevents damage • The control voltage and coil current are fixed ^ Broad lineup offered in a range of control voltages, coil currents, and packages Coik peak Current (A) DIP Package SOP Package...

Built-in MOS series Built-in MOS series (Buck Converter Topology) Built-in MOS series (PWM Flyback Topology) Buck Converter Topology Secondary Synchronous Rectification IC series AC/DC series with Built-in SiC MOSFET Built-in MOS series (Buck Converter Topology) Features ● No photocoupler: AC/DC current mode hopping function startup circuit pin under/over voltage protection overcurrent limiter error amp reduces the number of external parts Application Circuit Diagram D2 Thermal Protection Internal Regulator SuperJunction MOSFET Reference Voltage Logic & Timer Reference Voltage Leading-Edge Blanking...

Buck Converter Lineup Package Frequency Reduction Primary Power Supply Device Catalog 08

Built-in MOS series B Built-in MOS series B . ____ . B ___ . B Secondary SynchronousB AC/DC series with (Buck Converter Topology) (PWM Flyback Topology) External MOS series series Rectification IC series Built-in SiC MOSFET Applicable Products ■ Overview A broad lineup is available. ■ Packages: SOP8/DIP7K/TO220 ■ Output Power: Up to 45W class (depending on power supply specifications) ■ Frequency: 65kHz to 130kHz ■ Multiple protection circuits ■ Technology Trend Reducing standby power has become a major theme. To achieve high efficiency, various models are offered featuring low circuit current....

Circuit Technology AC/DC with X Capacitor Discharge Function Discharges the X capacitor without external discharge resistors Supports capacitances up 6.8μF (discharge) Ultra-low standby power consumption Discharge required Discharge resistors eliminated Current path during discharge Startup Circuit Startup Circuit Control Discharge Control CH1: Vac 50V/div Time 100ms/div Evaluation Result (AC264V/IO=0A/Cx=4.0μF) Primary Power Supply Device Catalog

Built-in MOS series B Built-in MOS series B . ____ . B ___ . B Secondary SynchronousB AC/DC series with (Buck Converter Topology) (PWM Flyback Topology) External MOS series series Rectification IC series Built-in SiC MOSFET Features • PWM peak current control • Burst operation at light loads • Built-in 650V startup circuit • Integrated 800V SuperJunction MOSFET • Equipped with high voltage sense circuit •VCC pin OVP/UVLO protection •voltage compensation overcurrent protection •External Latch function (Latch pin) • X capacitor discharge function Characteristics • Vcc voltage range: 1.9V to 26.0V...