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MC33395TDWB bảng dữ liệu(PDF) 9 Page - Freescale Semiconductor, Inc |
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MC33395TDWB bảng dữ liệu(HTML) 9 Page - Freescale Semiconductor, Inc |
9 / 16 page Analog Integrated Circuit Device Data Freescale Semiconductor 9 33395 FUNCTIONAL DESCRIPTION INTRODUCTION FUNCTIONAL DESCRIPTION INTRODUCTION The 33395 and 33395T devices are designed to provide the necessary drive and control signal buffering and amplification to enable a DSP or MCU to control a three- phase array of power MOSFETs such as would be required to energize the windings of powerful brushless DC (BLDC) motors. It contains built-in charge pump circuitry so that the MOSFET array may consist entirely of N-Channel MOSFETs. It also contains feedback sensing circuitry and control circuitry to provide a robust overall motor control design. FUNCTIONAL PIN DESCRIPTION CHARGE PUMP CAPACITOR (CP2H) High potential pin connection for secondary charge pump capacitor CHARGE PUMP RESERVE CAPACITOR (CPRES) Input from external reservoir capacitor for charge pump INPUT VOLTAGE (VIGN) Input from ignition level supply voltage for power functions HIGH-SIDE GATE VOLTAGE (VGDH) Output full-time gate drive for auxiliary high-side power MOSFET switch INPUT VOLTAGE PROTECTED (VIGNP) Input from protected ignition level supply for power functions HIGH-SIDE SENSE (SRC1, SRC2, SRC3) Sense for high-side source voltage, phase 1/2/3 GATE DRIVE HIGH (GDH1, GDH2, GDH3) Output for gate high-side, phase 1/2/3 OUTPUT FOR GATE (GDL1, GDL2, GDL3) Output for gate drive low-side, phase 1 POWER GROUND (PGND) Ground pins for power functions TEST PIN (TEST) This should be connected to ground or left open IS MINUS (-ISENS) Inverting input for current limit comparator IS PLUS (+ISENS) Non-Inverting input for current limit comparator ANALOG GROUND (AGND) Ground pin for logic functions LOGIC SUPPLY VOLTAGE (VDD) Supply voltage for logic functions PULSE WIDTH MODULATOR (PWM) Input for pulse width modulated driver duty cycle MODE CONTROL BIT 1 (MODE1) Input for mode control selection MODE CONTROL BIT 0 (MODE0) Input for mode control selection HIGH-SIDE ENABLE (HSE3, HSE2, HSE1) Input for high-side enable logic, phase 1/2/3 LOW-SIDE ENABLE (LSE3, LSE2, LSE1) Input for low-side enable logic, phase 1/2/3 EXTERNAL PUMP CAPACITOR (CP1L, CP1H) Input from external pump capacitor for charge pump and secondary pins CHARGE PUMP CAPACITOR (CP2L) Input from external reservoir, external pump capacitors for charge pump, and secondary pins |
Số phần tương tự - MC33395TDWB |
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Mô tả tương tự - MC33395TDWB |
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