configurable stepper multi motor driver Operating voltage supply
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L6460
configurable stepper multi motor driver
Operating voltage supply from full bridge driver configurable multi-motor application drive: stepper motor motor Bridge (RDSon 0.60 configured work Dual full bridge driver Super driver half bridge driver super half bridge power switches super power switch Bridge (RDSon 0.75 configured work Same bridges listed above buck regulators (bridge super buck regulator Battery charger (bridge Power supply management switching buck regulator switching regulator controller linear regulator battery charger Fully protected through Thermal warning shutdown Overcurrent protection Undervoltage lock-out interface Programmable watchdog function Integrated power sequencing supervisory functions with fault signaling through serial interface external reset Very power dissipation shut-down mode (~35
TQFP64 exposed
features Multi-channels operational amplifiers Digital comparator voltage power switches general purpose generators GPIOs
Description
L6460 optimized control drive multimotor system providing unique level integration term control, power auxiliary features. Thanks high configurability L6460 customized drive different motor architectures optimize number embedded features, such voltage regulators, high precision converter, voltage comparators. possibility drive simultaneously stepper motor makes L6460 ideal solution application featuring multi motors. Table Device summary
Package TQFP64 Packing Tray
Order code L6460
October 2009
16587
www.st.com
further information contact your local STMicroelectronics sales office.
Block diagram
L6460
Figure
Block diagram
Block diagram
.Amps
(2x) 3.3V Switc
Digital auxiliary
Digital par.
rrent
Osc.
L6460
Ther Mana
Power equencing
Start config.
Bridge
GPIOs
Bridge
Rsens
Superv isory Mana
Analog
Main Switch regulator
Switching Reg. controll
arge
Int. Ref. Volt
Main Linear regulator
Internal regulators
Batt. Charg. circuitry
Stepper circuitry
Bridge
Bridge
Rsens
Functional description
L6460 offers possibility control power multi motor systems, through management simultaneous driving stepper motor. number features configured through digital interface (SPI), including voltage regulators, high precision converter, operational amplifiers configurable GPIOs. high flexibility allows possibility configure two, full half bridge work power stage featuring additional voltage buck regulators.
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L6460
Block diagram
connection
Figure connection
DC1_PLUS VSWDRV_GATE DC3_PLUS VSWDRV_SW VSupplyInt VGPIO_SPI nRESET
VSupply
GPIO6
GPIO7
VSupply
VPump
V3V3
DC1_PLUS VSWDRV_SNS VSWDRV_FB GPIO4 GPIO3 DC1_MINUS DC1_MINUS GND1 GND2 DC2_MINUS DC2_MINUS GPIO2 GPIO1 GPIO0 DC2_PLUS DC2_PLUS
DC3_SENSE GPIO5 GPIO9 GPIO10 GPIO11 N.C. DC3_MINUS DC3_SENSE DC4_SENSE DC4_MINUS N.C. GPIO14 GPIO13 GPIO12 nAWAKE DC4_SENSE
GND_PAD
N.C. N.C.
VSupply
MISO
MOSI
VLINmain_FB
VLINmain_OUT
GPIO8
VSWmain_SW
VSupply
VSWmain_FB
VREF_FB
IREF_FB
SCLK
VSupply
DC4_PLUS
list
Table
Pins configuration
name DC1_PLUS Description Bridge phase "plus" output Type Output Analog input Analog input Analog In/Out CMOS bi-dir Analog In/Out CMOS bi-dir Output Output Power/digital Power/digital
VSWDRV_SNS Switching regulator controller sense VSWDRV_FB GPIO4 GPIO3 Switching regulator controller feedback General purpose General purpose
DC1_MINUS Bridge phase "minus" output DC1_MINUS Bridge phase "minus" output GND1 GND2 Ground bridge1
(1)(2)(3) (1)(2)(3)
Ground bridge2
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Block diagram Table
L6460 Pins configuration (continued)
name Description Type Output Output Analog In/Out CMOS bi-dir Analog In/Out CMOS bi-dir Analog Input CMOS input CMOS input Output Output Power input CMOS output CMOS input Analog input Power output Analog In/Out CMOS bi-dir Power output Power Input Analog input Analog input Analog input CMOS input Power input Output
DC2_MINUS Bridge phase "minus" output DC2_MINUS Bridge phase "minus" output GPIO2 GPIO1 GPIO0 DC2_PLUS DC2_PLUS VSupply MISO MOSI VLINmain_FB General purpose General purpose General purpose chip select Bridge phase "plus" output Bridge phase "plus" output Main voltage supply serial data output serial data input Linear main regulator feedback
VLINmain_OUT Linear main regulator output GPIO VSWmain_SW VSupply VSWmain_FB VREF_FB IREF_FB SCLK VSupply DC4_PLUS N.C. General purpose Main switching regulator switching output Main voltage supply Main switching regulator feedback Regulator voltage feedback Regulator current feedback input clock Main voltage supply Bridge phase "plus" output connected
DC4_SENSE Bridge sense output(4) nAWAKE GPIO12 GPIO13 GPIO14 N.C. Device wake General purpose General purpose General purpose connected
Output CMOS input Analog In/Out CMOS bi-dir Analog In/Out CMOS bi-dir Analog In/Out CMOS bi-dir
DC4_MINUS Bridge phase "minus" output DC4_SENSE Bridge sense output DC3_SENSE Bridge sense output
Output Output Output Output
DC3_MINUS Bridge phase "minus" output N.C. GPIO11 connected General purpose
Analog In/Out CMOS bi-dir
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L6460 Table
E_Pad
Block diagram Pins configuration (continued)
name GPIO10 GPIO9 GPIO5 Description General purpose General purpose General purpose
Type Analog In/Out CMOS bi-dir Analog In/Out CMOS bi-dir Analog In/Out CMOS bi-dir Output
DC3_SENSE Bridge sense output N.C. DC3_PLUS VSupply nRESET V3v3 VSupplyInt GPIO7 VGPIO_SPI GPIO6 VSWDRV_SW connected
Bridge phase "plus" output Main voltage supply Open drain system reset Internal volt regulator Internal voltage supply General purpose voltage pins power supply General purpose Switching regulator controller source input
Output Power input CMOS Input/output Power Input/output Power Input Analog In/Out CMOS bi-dir Power input Analog In/Out CMOS bi-dir Power input Analog output Power Input/output Power Input/output Power Input/output Power input Output
VSWDRV_GATE Switching driver gate drive VPump VSupply DC1_plus GND_PAD Charge pump voltage Charge pump high switch Charge pump switch Main voltage supply Bridge phase "plus" output
(1)(2)(3)
These pins must connected together unique ground. Bridges1 have ground pads: bonded relative ground (GND1 GND2) other connected exposed (E_Pad) ground ring. This makes bond wires testing possible forcing current between E-Pad GND1 GND2 pins using other sense measure resistance E-Pad bonding. (N.B: grounds bridges internally connected together). analog ground connected exposed E-Pad. must tied ground bridge used stepper motor.
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Package mechanical data
L6460
Package mechanical data
order meet environmental requirements, offers these devices different grades ECOPACK® packages, depending their level environmental compliance. ECOPACK® specifications, grade definitions product status available www.st.com. ECOPACK trademark. Figure
DIM. MIN. 0.45 11.80 9.80 2.00 7.50 0.50 0.60 1.00 3.5° 0.080 0.75 0.05 0.95 0.17 0.09 11.80 9.80 2.00 7.50 12.00 10.00 12.20 10.20 0.464 0.386 0.787 0.295 0.0197 0.0177 0.0236 0.0295 0.0393 3.5° 0.0031 12.00 10.00 1.00 0.22 TYP. MAX. 1.20 0.15 1.05 0.27 0.20 12.20 10.20 0.002 MIN. TYP. MAX. 0.0472 0.006
TQFP64 mechanical data package dimensions
inch
OUTLINE MECHANICAL DATA
0.0374 0.0393 0.0413 0.0066 0.0086 0.0086 0.0035 0.464 0.386 0.787 0.295 0.472 0.394 0.480 0.401 0.472 0.394 0.0078 0.480 0.401
TQFP64 (10x10x1.0mm) Exposed Down
7278840
16587
L6460
Revision history
Revision history
Table
Date 30-Oct-2009
Document revision history
Revision Initial release. Changes
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L6460
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