データシートサーチシステム |
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L6562 データシート(PDF) 2 Page - Intersil Corporation |
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L6562 データシート(HTML) 2 Page - Intersil Corporation |
2 / 5 page 2 Block Diagram Simplified Power System Diagram Functional Pin Description VID3 (Pin 1), VID2 (Pin 2), VID1 (Pin 3), VID0 (Pin 4) and VID25mV (Pin 5) Voltage Identification inputs from microprocessor. These pins respond to TTL and 3.3V logic signals. The ISL6562 decodes VID bits to establish the output voltage. See Table 1. COMP (Pin 6) Output of the internal transconductance error amplifier. Voltage at this terminal sets the output current level of the Current Sense Comparator. Pulling this pin to ground disables the oscillator and drives both PWM outputs low. FB (Pin 7) Inverting input of the internal transconductance error amplifier. CT (Pin 8) A capacitor on this terminal sets the frequency of the internal oscillator. GND (Pin 9) Bias and reference ground. All signals are referenced to this pin. PWRGD (Pin 10) Open drain connection. A high voltage level at this pin with a resistor connected to this terminal and VCC indicates that CORE voltage is at the proper level, CS+ (Pin 11) and CS- (Pin 14) These inputs monitor the supply current to the converter positive input voltage. CS+ is connected directly to the decoupled supply voltage and current sampling resistor. CS- is connected to the other end of the current sampling resistor and the upper drains of the series transistors. PWM2 (Pin 12) and PWM1 (Pin 13) PWM outputs connected to the gate driver ICs. REF (Pin 15) Three volt supply used to bias the output of the transconductance amplifier. VCC (Pin 16) Bias supply. Connect this pin to a 12V supply. D/A UV OVP E/A CMP PWM1 PWM2 CS+ CS- GND REF VCC FB VID3 VID2 VID1 VID0 VID25mV COMP OSCILLATOR X1.24 PWRGD 3V REFERENCE BIAS CIRCUITS UVLO and CT CONTROL LOGIC + - + - + - X 0.82 + - SYNCHRONOUS ISL6562 MICROPROCESSOR FB VID RECTIFIED BUCK CHANNEL SYNCHRONOUS RECTIFIED BUCK CHANNEL PWM 1 PWM 2 VID3 VID2 VID1 VID0 VID25mV CT PWRGD REF PWM1 PWM2 VCC FB CS- COMP CS+ GND 14 15 16 9 13 12 11 10 1 2 3 4 5 7 6 8 ISL6562 |
同様の部品番号 - L6562 |
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同様の説明 - L6562 |
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