A3935KEDTR

A3935KEDTR Datasheet


The A3935 is designed specifically for automotive applications that require high-power motors. Each provides six high-current gate drive outputs capable of driving a wide range of n-channel power MOSFETs.

Part Datasheet
A3935KEDTR A3935KEDTR A3935KEDTR (pdf)
Related Parts Information
A3935KED A3935KED A3935KED
A3935KED-T A3935KED-T A3935KED-T
A3935KEDTR-T A3935KEDTR-T A3935KEDTR-T
A3935KJP A3935KJP A3935KJP
A3935KJP-T A3935KJP-T A3935KJP-T
PDF Datasheet Preview
Data Sheet 26301.102a
3935
3-PHASE POWER MOSFET CONTROLLER For Automotive Applications

Package ED, 44-Pin PLCC

Package JP, 48-Pin LQFP

Package LQ, 36-Pin SOIC

ABSOLUTE MAXIMUM RATINGS Load Supply Voltages, VBAT, VDRAIN,

VBOOST, BOOSTD V to 40 V Output Voltage Ranges,

GHA/GHB/GHC, VGHX -4 V to 55 V SA/SB/SC, VSX -4 V to 40 V GLA/GLB/GLC, VGLX -4 V to 16 V CA/CB/CC, VCX V to 55 V Sense Circuit Voltages, CSP,CSN, LSS -4 V to V Logic Supply Voltage, VDD V to V Logic Input/Outputs and OVSET, BOOSTS, CSOUT, VDSTH V to V Operating Temperature Range, TA -40°C to +135°C Junction Temperature, TJ +150°C Storage Temperature Range, TS -55°C to +150°C
* Fault conditions that produce excessive junction temperature will activate device thermal shutdown circuitry. These conditions can be tolerated, but should be avoided.

The A3935 is designed specifically for automotive applications that require high-power motors. Each provides six high-current gate drive outputs capable of driving a wide range of n-channel power MOSFETs.

A requirement of automotive systems is steady operation over a varying battery input range. The A3935 integrates a pulse-frequency modulated boost converter to create a constant supply voltage for driving the external MOSFETs. Bootstrap capacitors are utilized to provide the above battery supply voltage required for n-channel FETs.

Direct control of each gate output is possible via six TTL-compatible inputs. A differential amplifier is integrated to allow accurate measurement of the current in the three-phase bridge.

Diagnostic outputs can be continuously monitored to protect the driver from short-to-battery, short-to-supply, bridge-open, and battery under/overvoltage conditions. Additional protection features include dead-time, VDD undervoltage, and thermal shutdown.

The A3935 is supplied in a choice of three packages, a 44-lead PLCC with copper batwing tabs suffix ED , a 48-lead low profile QFP with exposed thermal pad suffix JP , and a 36-lead mm pitch SOIC suffix LQ .

FEATURES ! Drives wide range of n-channel MOSFETs in 3-phase bridges ! PFM boost converter for use with low-voltage battery supplies ! Internal LDO regulator for gate-driver supply ! Bootstrap circuits for high-side gate drivers ! Current monitor output ! Adjustable battery overvoltage detection. ! Diagnostic outputs ! Motor lead short-to-battery, short-to-ground, and
bridge-open protection ! Undervoltage protection ! -40 °C to +150 °C, TJ operation ! Thermal shutdown

Always order by complete part number, e.g., A3935KLQ
3935 THREE-PHASE POWER MOSFET CONTROLLER

Functional Block Diagram

See pages 8 and 9 for terminal assignments and descriptions.
115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 508 853-5000

Copyright 2003 Allegro MicroSystems, Inc.

A3935KED PLCC
3935 THREE-PHASE POWER MOSFET CONTROLLER

A3935KLQ SOIC
* Measured on “High-K” multi-layer PWB per JEDEC Standard JESD51-7.
† Measured on typical two-sided PWB with power tabs terminals 1, 2, 11, 12, 22, 23, 34, and 35 connected to copper foil with an area of square inches 2452 mm2 on each side. See Application Note Improving Batwing Power Dissipation, for additional information.
3935 THREE-PHASE POWER MOSFET CONTROLLER

ELECTRICAL CHARACTERISTICS unless otherwise noted at TJ = -40°C to +150°C, VBAT = 7 V to 16 V, VDD = V to V, ENABLE = kHz, 50% Duty Cycle, Two Phases Active.

Limits

Characteristics

Symbol Conditions

Min Typ Max Units

Power Supply

VDD Supply Current

All logic inputs = 0 V

VBAT Supply Current

IBAT

All logic inputs = 0 V
More datasheets: RTE1000G13 | RTE1600R43 | RTE0302N01 | RTE0302N03 | PFIM21V2 | AOZ8304ADI | 333-2SUGC/S400-A4 | 13815 | A3935KED | A3935KED-T


Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived A3935KEDTR Datasheet file may be downloaded here without warranties.

Datasheet ID: A3935KEDTR 516024