BD7791KVT ROHM Co. Ltd., BD7791KVT Datasheet

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BD7791KVT

Manufacturer Part Number
BD7791KVT
Description
Pwm Driver For Combi Drive
Manufacturer
ROHM Co. Ltd.
Datasheet
This product isn’t designed for protection against radioactive rays.
Status of this document
The Japanese version of this document is the formal specification.
A customer may use this translation version only for a reference to help reading the formal version.
If there are any differences in translation version of this document , formal version takes priority.
○Absolute maximum ratings
○Recommended operating conditions(Ta=-30~+85℃)
Structure
Product series
Type
Function
〔Set the power supply voltage taking allowable dissipation into considering〕
Power MOS supply voltage
Control circuit power supply voltage
Maximum driver output current
Power dissipation
Operating temperature range
Storage temperature range
Joint part temperature
Power MOS supply voltage
Control circuit power supply voltage
#1 The current is guaranteed 3.0A in case of the current is turned on/off in a duty-ratio of less than 1/10 with a maximum
on-time of 5ms and when short brake.
#2 PCB (70mm×70mm×1.6mm,occupied copper foil is less than 3%,glass epoxy standard board) mounting.
Reduce power by 11.0mW for each degree above 25℃.
Parameter
Parameter
Silicon Monolithic Integrated Circuit
PWM Driver for combi drive
BD7791KVT
・3-phase-sensor-less system, therefore don’t need three hall sensors
・Stability high-speed start from the state of the stop for spindle motor driver.
for spindle motor driver.
REV. A
Symbol
Symbol
IoMAX
Tjmax
PVcc
PVcc
Topr
Tstg
Vcc
Vcc
Pd
MIN
4.0
4.0
1.37 #2
-55~150
-30~85
3 #1
Limits
TYP
150
5.0
5.0
6
6
MAX
5.5
5.5
Unit
Unit
W
V
V
A
V
V
1/3

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BD7791KVT Summary of contents

Page 1

... If there are any differences in translation version of this document , formal version takes priority. Silicon Monolithic Integrated Circuit PWM Driver for combi drive BD7791KVT ・3-phase-sensor-less system, therefore don’t need three hall sensors for spindle motor driver. ・Stability high-speed start from the state of the stop for spindle motor driver. ...

Page 2

Ta=25℃, Vcc=PVcc=5V, Vref=1.25V, RL(ACT,STP,LOAD)=8Ω+47μH, RL(SP)=2Ω+47μH, RNF=0.2Ω, Parameter Circuit Quiescent current current Current in standby mode Input dead zone (one side) Output offset voltage Actuator Voltage gain 1 (CH1,2,3) driver Voltage gain 2 (CH1,2) block Output ...

Page 3

Application circuit The external constants concerning CH1,2 are values optimized in case 4Ω+47μH is assumed as a load, and those concerning CH3 are values optimized in case 4Ω+10μH is assumed as a load. 10kΩ IN1 270Ω 0.1μ ...

Page 4

Appendix No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product ...

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