전자부품 데이터시트 검색엔진 |
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L6910 데이터시트(PDF) 11 Page - STMicroelectronics |
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L6910 데이터시트(HTML) 11 Page - STMicroelectronics |
11 / 21 page 11/21 L6910A L6910 Figure 8. Asymptotic Bode plot of Converter's gain 20A Demo Board Description The demo board shows the operation of the device in a general purpose application. This evaluation board al- lows voltage adjustability from 0.9V to 5V through the switches S2-S5 according to the reported table when the internal 0.9V reference is used (G1 closed). Output current in excess of 20A can be reached dependently on the kind of mosfet used: up to three SO8 mosfet may be used for both High side and Low side switches. External reference may be used for the regulation simply leaving open G1 and the switches S2-S5. The device may also be disabled with the switch S1. The 12V input rail supplies the device while the power conversion starts from the 5V input rail. The device is also able to operate with a single supply voltage; in this case the jumper G2 has to be closed and a 5V to 12V input can be directly connected to the VIN input. The four layers demo board's copper thickness is of 70 µm in order to minimize conduction losses considering the high current that the circuit is able to deliver. Figure 9 shows the demo board's schematic circuit Figure 9. 20A Demo Board Schematic Error Amplifier ωΖ1 ωΖ2 ωP1 ωP2 ωESR R5/R3 Modulator Gain Compensation Network Gain Error Amplifier Closed Loop Gain ωLC ω dB L2 L1 R7 C1 -C3 C14 C4 -11 Q4 -6 Q1 -3 D2 C17 F1 13 14 10 11 3 1 U1 L6910 VIN VOUT PWRGD 6 12 5 4 2 15 7 9 VCC GND VREF SS OSC OCSET UGATE PHASE LGATE PGND PGOOD C19 R1 C21 C13 D1 GNDIN GNDOU T R2 GNDref +Vref C12 GNDRef IN Ref IN C16 G1 C15 R6 C18 8 GNDCC VCC R5 G2 R3 R4 C20 S1 S2 S3 S4 S5 R10 R11 R12 R13 EAREF BOOT Vout S2 S3 S4 S5 0.9 1.2 1.5 1.8 2.5 3.3 5.0 Open Open ON Ope n Open Open Open Open Open Open Open Open Open Open Open Open Open ON ON ON Open Open ON ON ON ON Open Open |
유사한 부품 번호 - L6910 |
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유사한 설명 - L6910 |
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