lv8105w ETC-unknow, lv8105w Datasheet
lv8105w
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lv8105w Summary of contents
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... LV8105W Overview The LV8105W is a predriver IC designed for variable speed control of 3-phase brushless motors. It can be used to implement a high- and low-side output n-channel power FET drive circuit using a built-in charge pump circuit. High-efficiency drive is possible through the use of low noise PWM drive and synchronous rectifying systems. ...
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... VB (FG) High level output voltage V OH (FG) Low level output voltage V OL (FG) FG input sensitivity Schmitt width of the next stage Operation frequency range Open-loop gain LV8105W Conditions Conditions At stop 5mA 28V -10mA Pins UL, VL and -2mA VREG-0 ...
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... VLVSD ∆VLVSD Hysteresis width Thermal shutdown operation Thermal shutdown operation TSD temperature ∆TSD Hysteresis width Note : * These items are design target values and are not tested. LV8105W Conditions I FGS = 2mA 0.047µF VREG-1.25 VREG-2.0 ILD = 2mA VREG-2.0 I INT I = -0.1mA, No load I INT ...
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... Input open voltage V IO (BR) Hysteresis width V IS (BR) High level input current I IH (BR) Low level input current I IL (BR) Pull-up resistance RU (BR) Note : * These items are design target values and are not tested. LV8105W Conditions VREG-0.5 Design target value* VCLK = 5V VCLK = 0V VREG-0 VREG-0 VREG-0 ...
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... Pin Assignment CP2 40 CP1 VREG 43 GND2 44 GND1 FIL LV8105W 1.5 Mounted on a board 1.3 1.0 Independent IC 0.5 0.45 0.15 0 – LV8105 max – Ta Specified board : 114.3 × 76.1 × 1.6mm glass epoxy ...
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... When the Hall input is performed by the reverse order, it will not become the soft current-carrying output. (The motor is driven by the 120 degrees current-carrying only.) S/S Input Input High or Open Low Current Control Characteristics LV8105W (A high level input is the state where IN + > F/R = “H” IN1 IN2 IN3 L ...
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... Block Diagram (Referance constants) LV8105W No.A1271-7/21 ...
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... Relations Hall input with Drive output (1) When F/R = ”L” and the soft current-carrying output. IN1 IN2 IN3 (UH) (VH) (WH) 120 degrees Current-carrying (UL) (VL) (WL Soft Current-carrying LV8105W PWM control output Synchronous rectification output No.A1271-8/21 ...
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... When F/R = ”H” and the soft current-carrying output. IN1 IN2 IN3 (UH) (VH) (WH) 120 degrees Current-carrying (UL) (VL) (WL Soft Current-carrying LV8105W PWM control output Synchronous rectification output No.A1271-9/21 ...
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... When F/R = ”L” and the 120 degrees current-carrying only. IN1 IN2 IN3 PWM control output (4) When F/R=”H” and the 120 degrees current-carrying only. IN1 IN2 IN3 PWM control output LV8105W Synchronous rectification output Synchronous rectification output No.A1271-10/21 ...
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... Integrating amplifier inverting input pin. 6 INTREF Integrating amplifier non-inverting input pin. 1/2 VREG potential. Connect a capacitor between this pin and GND. 7 DOUT Speed discriminator output pin. Acceleration → high, deceleration → low. LV8105W Pin function VREG VREG VREG 30kΩ 500Ω 6 30kΩ VREG ...
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... The hysteresis width is about 0.27V Brake pin (short braking operation). Low : 0V to 1.0V High : 2.0V to VREG Goes high when left open. High or open for brake mode operation. The hysteresis width is about 0.27V. LV8105W Pin function VREG VREG VREG VREG VREG Equivalent circuit 8 55kΩ ...
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... and as a low level input for the opposite state. 20 IN2 + 21 If noise on the Hall signals is a problem, insert IN3 - capacitors between the corresponding IN + and IN3 + 23 inputs. LV8105W Pin function VREG VREG VREG FG Schmitt comparator VREG 30kΩ 500Ω 17 30kΩ ...
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... Output current detection pin. Connect to the current detection resistor Rf. Sets the the maximum output current IOUT to be 0.25/Rf Output pins for gate drive of the lower side channel power FET LV8105W Pin function V CC VREG 25 VREG Equivalent circuit 24 2kΩ 5kΩ VREG Continued on next page ...
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... Connect a capacitor between this pin and CP1. 41 CP1 Pin to connect the capacitor for charge pump. Connect a capacitor between this pin and CP2. 43 VREG 5V constant voltage output pin (5.6V). Connect a capacitor between this pin and GND. LV8105W Pin function Equivalent circuit 100Ω 100Ω ...
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... R Pin to set the charge/discharge current of the VCO circuit. Connect a resistor between this pin and GND. 48 FIL VCO PLL output filter pin connection pins LV8105W Pin function VREG VREG VREG 48 Equivalent circuit 500Ω 46 500Ω 500Ω No.A1271-16/21 47 ...
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... Description of LV8105W 1. Speed control circuit This IC controls the speed with a combination of the speed discriminator circuit and the PLL circuit. Therefore, when a motor that has large load variation is used possible to prevent the rotation variation as compared with the speed control method only the speed discriminator. The speed discriminator circuit and the PLL circuit outputs an error signal once every one FG period ...
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... BR pin rather than with the S/S pin (Since the IC will be in the power save state at the stop mode, enough time for the VCO circuit to stabilize will be required at the beginning of the motor start operation). LV8105W <High level output voltage> VREG-1.0V VREG-1.7V < ...
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... Constraint protection circuit The LV8105W includes an on-chip constraint protection circuit to protect the motor and the output transistors in motor constraint mode. If the LD output remains high (indicating the unlocked state) for a fixed period in the motor drive state (the S/S pin : start, the BR pin : brake release), the lower side output transistors (the UL, VL and WL side) are turned off. ...
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... Low-voltage protection circuit The LV8105W includes a low-voltage protection circuit to protect against incorrect operation when the V CC power is applied or if the power supply voltage falls below its operating level. When the V CC voltage falls under the specified voltage (VLVSD), all the outputs will be in the off state. If the V CC voltage rises to more than the hysteresis width (∆ ...
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... SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of August, 2008. Specifications and information herein are subject to change without notice. LV8105W PS No.A1271-21/21 ...