A3933SEQ Allegro Micro Systems, Inc., A3933SEQ Datasheet
A3933SEQ
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A3933SEQ Summary of contents
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... A power-loss braking circuit brakes the motor on an under-voltage condition. The device is configured to either coast or dynamically brake the motor when this occurs. Dwg. PP-068 The A3933SEQ is supplied in a 32-lead rectangular ( plastic chip carrier (quad pack) for minimum-area, surface-mount applica- tions. I Drives External N-Channel FETs ...
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THREE-PHASE POWER MOSFET CONTROLLER +V LCAP V BB REGULATOR CONTROL LOGIC DIR RESET MODE PWM RC RC BLANKING R C (FIXED OFF TIME REF + SENSE – CCOUT BRAKE BRKSEL BRAKE BRKCAP ...
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NOTES: 1. Typical Data is for design information only. 2. Negative current is defined as coming out of (sourcing) the specified device terminal. www.allegromicro.com ° ∆ ∆ ∆ µ µ 3933 THREE-PHASE POWER MOSFET CONTROLLER µ Continued — µ ...
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THREE-PHASE POWER MOSFET CONTROLLER NOTES: 1. Typical Data is for design information only. 2. Negative current is defined as coming out of (sourcing) the specified device terminal. ° ≥ 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 ...
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THREE-PHASE POWER MOSFET CONTROLLER — A logic input used to enable the device, internally pulled (+5 V). A logic HIGH will disable the LCAP device and force all gate drivers coasting the motor. ...
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THREE-PHASE POWER MOSFET CONTROLLER — Open-drain output to indicate fault condition; will go active high for any of the following: 1 – invalid HALL input code, 2 – high-side, gate-source voltage less than – bootstrap capacitor ...
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Logic Inputs DIR ...
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THREE-PHASE POWER MOSFET CONTROLLER The high-side bootstrap circuit operates on a charge-transfer principle. The gate charge (Q ) specification of the external power MOSFET must be g taken into consideration. The bootstrap capacitor must be large enough to turn ...
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The capacitor (C ) also serves as the means to T set the blank time duration. After the off time expires, the selected gates are turned back ON. At this time, large current transients can occur during the reverse recovery ...
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THREE-PHASE POWER MOSFET CONTROLLER 0.013 0.021 0.546 0.476 LONG SIDE (0.446 0.376 SHORT SIDE) 0.050 BSC NOTES: 1. Lead spacing tolerance is non-cumulative. 2. Exact body and lead configuration at vendor’s option within limits shown 20 21 0.026 0.032 ...
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LONG SIDE (11.32 9.56 SHORT SIDE) 1.27 BSC NOTES: 1. Lead spacing tolerance is non-cumulative. 2. Exact body and lead configuration at vendor’s option within limits shown www.allegromicro.com 20 21 0.66 0.82 15.11 14.86 14.04 13.90 ...
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THREE-PHASE POWER MOSFET CONTROLLER * Current is maximum specified test condition, voltage is maximum rating. See specification for sustaining voltage limits or over-current protection voltage limits. Negative current is defined as coming out of (sourcing) the output. † Complete ...