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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ADP1043 데이터시트(PDF) 3 Page - Analog Devices |
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ADP1043 데이터시트(HTML) 3 Page - Analog Devices |
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3 / 8 page  Preliminary Technical Data ADP1043 Rev. PrA | Page 3 of 8 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS PIN 1 INDICATOR 1 VS2 2 AGND 3 VS1 4 CS2– 5 CS2+ 6 ACSNS 7 CS1 8 PGND 24 SHAREi 23 SHAREo 22 PGOOD1 21 PGOOD2 20 FLAGIN 19 PSON 18 SDA 17 SCL ADP1043 TOP VIEW (Not to Scale) Figure 3. Pin Configuration Table 1. Pin Function Descriptions Pin No. Mnemonic Description 1 VS2 Power Supply Output Sense Input. This signal is referred to PGND. Input to a low frequency Σ-Δ ADC. Nominal voltage at this pin should be 1 V. 2 AGND Analog Ground. This pin is the ground for the analog circuitry of the ADP1043. Star connect to DGND. 3 VS1 Local Voltage Sense Input. This signal is referred to PGND. Input to a high frequency Σ-Δ ADC. Nominal voltage at this pin should be 1 V. 4 CS2− Inverting Differential Current Sense Input. Nominal voltage at this pin should be 1 V for best operation. When using high-side current sense in a 12 V application, a 110 kΩ resistor should be placed between the sense resistor and this pin. When using low-side current sense, a 10 kΩ resistor should be placed between the sense resistor and this pin. When using high-side, use the formula R = (VCOMMONMODE − 1)/100 μA. 5 CS2+ Noninverting Differential Current Sense Input. Nominal voltage at this pin should be 1 V for best operation. When using high-side current sense in a 12 V application, a 110 kΩ resistor should be placed between the sense resistor and this pin. When using low-side current sense, a 10 kΩ resistor should be placed between the sense resistor and this pin. When using high-side, use the formula R = (VCOMMONMODE − 1)/100 μA. 6 ACSNS AC Sense Input. This input is connected upstream of the main inductor through a resistor divider network. The nominal voltage at this pin should be 1 V. This signal is referred to PGND. 7 CS1 Primary Side Differential Current Sense Input. This is the current transformer input to measure and control the primary side current. This signal is referred to PGND. 8 PGND Power Ground. This pin is the ground connection for the main power rail of the power supply. Star connect to AGND. 9 SR1 Synchronous Rectifier Output. This PWM output is connected to the input of a FET driver. This pin can be disabled when not in use. This signal is referred to AGND. 10 SR2 Synchronous Rectifier Output. This PWM output is connected to the input of a FET driver. This pin can be disabled when not in use. This signal is referred to AGND. 11 OUTA PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND. 12 OUTB PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND. 13 OUTC PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND. 14 OUTD PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND. 15 OUTAUX Auxiliary PWM Output. This pin can be disabled when not in use. This signal is referred to AGND. 16 GATE OrFET Gate Drive Output. This output is open drain. This signal is referred to AGND. |
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