SI-8000Y_11

1-1-3 DC/DC Converter ICs SI-8000Y Series Current Mode Control Step-down Switching Mode ICs Full-Mold, Separate Excitation Step-down Switching Mode Regulator ■Features • Compact (equivalent to TO220) full-mold package • Output current: 8.0 A • High efficiency: 86% • Built-in reference oscillator (130 kHz) • Built-in drooping-type-overcurrent protection and thermal protection circuits • Built-in soft start circuit (Output ON/OFF available) • Low current consumption during off Power Dissipation Junction Temperature Storage Temperature Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient Air) ■Absolute Maximum Ratings Parameter Input Voltage Symbol VIN PD1 PD2 Tj Tstg θj-c θj-a Ratings 45 20.8(With infinite heatsink) 1.8(Without heatsink, stand-alone operation) –30 to +150 –40 to +150 6 66.7 Unit V W W °C °C °C/W °C/W ■Applications • • • • AV equipment OA equipment Gaming equipment Onboard local power supplies ■Recommended Operating Conditions Parameter Input Voltage Range Output Voltage Range Output Current Range Operating Junction Temperature Range Operating Temperature Range Symbol VIN Vo Io Tjop Top Raings SI-8010Y 8 or VO+3* to 43 1 to 15 0 to 8.0 –30 to +135 –30 to +85 SI-8050Y 8 to 43 5 Unit V V A °C °C *: The minimum value of the input voltage range is 8 V or Vo + 3V, whichever is higher. ■Electrical Characteristics Ratings Parameter Output Voltage (Reference voltage for SI-8010Y) (Reference voltage temperature coefficient for SI-8010Y) Efficiency Oscillation Frequency Line Regulation Load Regulation Overcurrent Protection Starting Current Symbol mIN. VO(VREF) Conditions Conditions η Conditions fo Conditions 0.98 SI-8010Y* typ. 1.00 VIN=30V, Io=0.1A ± 0.1 VIN=30V, Io=0.1A, Ta=0 to 100°C 86 VIN=30V, Io=3A 130 VIN=30V, Io=3A 30 VIN=10 to 43V, Io=3A 30 VIN=30V, Io=0.1 to 8A 8.1 VIN=20V 8 VIN=30V, Io=0A, EN/SS=open 200 VIN=30V, EN/SS=0V 10 VIN=30V, EN/SS=0V 0.5 VIN=30V 300 800 0.16 92 200 VIN=30V 300 800 0.16 92 200 30 500 8.1 VIN=20V 8 VIN=30V, Io=0A, EN/SS=open 200 VIN=30V, EN/SS=0V 10 VIN=30V, EN/SS=0V 0.5 30 500 90 90 max. 1.02 mIN. 4.90 SI-8050Y typ. 5.00 VIN=30V, Io=0.1A ± 0.5 VIN=30V, Io=0.1A, Ta=0 to 100°C 86 VIN=30V, Io=3A 130 VIN=30V, Io=3A 30 VIN=10 to 43V, Io=3A 30 VIN=30V, Io=0.1 to 8A 90 90 max. 5.10 V mV/°C % kHz mV mV A mA Unit Temperature Coefficient of Output Voltage ∆VO/∆T(∆VREF/∆T) ∆VOLINE Conditions ∆VOLOAD Conditions Is Conditions Iq Conditions Iq(OFF) Conditions ISSL Conditions VSSL Conditions AEA GEA 1/GCS DMAX DMIN Quiescent Circuit Current µA µA V V/V Outflow Current at Low Voltage EN/SS Pin* Low Level Voltage Error Amplifier Voltage Gain Error Amplifier Transformer Conductance Current Sense Amplifier Impedance Maximum ON Duty Minimum ON Time µA/V V/A % nsec *:R1=8kΩ, R2=2kΩ when Ta=25°C and Vo=5V SI-8000Y SI-8000Y 5 SS C6 5 SS C6 Soft start Soft start +VOUT. ON/OFF 48 ICs SI-8000Y Series ■External Dimensions (TO220F-7) 10.0±0.2 Gate burr 0.5 (Unit : mm) 4.2±0.2 2.8±0.2 4.0±0.2 7.9±0.2 16.9±0.3 φ 3.2±0.2 7.6±0.1 (Measured at the root) (3-R1) 10±0.5 6-0.74±0.15 6-0.65 –0.1 +0.2 R-end (5.3) Pin Assignment q BS w SW e VIN r GND t COMP y FB u EN/SS Plastic Mold Package Type Flammability: UL94V-0 Product Mass: Approx. 2.3g 2.8 17.6±0.7 0.45 –0.1 6×P1.27±0.15–7.62±0.15 (Measured at the root) 4.3±0.5 +0.2 3.6±0.5 0.5 0.5 1 234567 Plan View ■Block Diagram SI-8010Y 3 IN Current Sence Amp Boot 5vREG BS Current Sence Amp Boot 5vREG BS SI-8050Y 3 IN Pre REG OSC Pre REG 1 OSC 1 7 + – EN/ SS EN/SS PWM LOGIC UVLD TSD OCP DRIVE SW 2 7 + – EN/ SS EN/SS PWM LOGIC UVLD TSD OCP DRIVE SW 2 5 COMP – – + 6 1.0V FB 5 COMP – – + 6 1.0V FB Amp GND 4 GND 4 Amp ■Typical Connection Diagram Csn1 Rsn1 Vin 3 C1 + C2 7 IN EN/SS C6 1 BS SW C5 2 D1 6 GND 4 C4 C7 R3 GND Rsn2 GND GND Csn2 C7 R3 Rsn2 GND FB R2 L1 Vo C1 + C2 R1 C3 + C6 7 Vin 3 IN EN/SS 1 BS SW C5 2 D1 6 GND 4 C4 Csn2 FB C3 + L1 Vo Csn1 Rsn1 SI-8010Y SI-8050Y COMP 5 COMP 5 SI-8010Y C1:2200µF/50V C2:4.7µF/50V C3:470µF/25V C4:1200pF C5:0.22µF/50V C7:680pF L1:47µH D1:FMW-2156 (Sanken) R1:8kΩ (When Vo=5V) R2:2kΩ R3:39kΩ Csn1,2=2200pF (When Vin>40V) Rsn1,2=10Ω (When Vin>40V) SI-8050Y C1:2200µF/50V Csn1,2=2200pF (When Vin>40V) C2:4.7µF/50V Rsn1,2=10Ω (When Vin>40V) C3:470µF/25V C4:1200pF C5:0.22µF/50V C7:680pF L1:56µH D1:FMW-2156 (Sanken) R3:39kΩ ICs 49