APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
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FEATURES
LOW COST 3 PHASE INTELLIGENT SWITCHING
AMPLIFIER
3 FULLY PROTECTED HALF BRIDGES
UP TO 60V SUPPLY
OUTPUT CURRENT - 5 AMPS (CONT) PER HALF BRIDGE
NO "SHOOT THROUGH" CURRENT
APPLICATIONS
3 PHASE BRUSHLESS DC MOTORS
3 INDEPENDENT SOLENOID ACTUATORS
DESCRIPTION
The SA305 is an integrated, fully protected, 3 phase brush-
less DC motor driver IC. Three independent half bridges pro-
vide up to 5A of continuous (10A peak) output current under
microcontroller or DSP control.
Thermal, short circuit, shoot through, and over current protec-
tion are included in this power device. Fault status indication
and current level monitors are provided directly to the controller.
The SA305 is built using a multi-technology process allowing
CMOS logic control and DMOS output power devices on the
same IC. Output current is measured using an innovative
low loss technique. The SIP package offers superior thermal
performance with a flexible footprint.
BLOCK DIAGRAM
23 PIN SIP
PACKAGE STYLE EX
TYPICAL APPLICATION
The SA305 offers a level of power integration unmatched by
others in the field of fractional HP brushless motor control.
EXTERNAL CONNECTIONS
APEX MICROTECHNOLOGY CORPORATION 5980 NORTH SHANNON ROAD TUCSON, ARIZONA 85741 USA APPLICATIONS HOTLINE: 1 (800) 546-2739
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PIN DESCRIPTIONS
Pin # Pin name
Description
10,21 Vs/VPWR High voltage supply (12V-60V)
17
Vdd
Logic supply (5V)
22
OutA
Half bridge output
13
OutB
Half bridge output
2
OutC
Half bridge output
1,23 PGND
Power ground, high current ground return path of the bridge outputs
11
SGND
Analog and logic circuits ground
19
DISABLE
Disable logic Input, CMOS. When high disables all six output MOSFETs independent of the Control regis-
ters.
18
Warning
Output pin goes high at Tj > 135C.
8
FAULT
The Fault output is raised under the following conditions:
a) Short-Circuit and Over Current condition.
b) High Temperature condition.
c) High Voltage Supply Vs < 12V.
This can be used as an interrupt to the microcontroller. It will be reset after status data has been read by
the microcontroller. A FAULT will also disable the outputs of the device.
16
PWM_HA
goes high in order to indicate the Pchannel of output A is to be turned on.
15
PWM_LA
goes high in order to indicate the Nchannel of output A is to be turned on.
12
PWM_HB
goes high in order to indicate the Pchannel of output B is to be turned on.
14
PWM_LB
goes high in order to indicate the Nchannel of output B is to be turned on.
7
PWM_HC
goes high in order to indicate the Pchannel of output C is to be turned on.
5
PWM_LC
goes high in order to indicate the Nchannel of output C is to be turned on.
20
IMON_A
Current monitor output, approximate current 1/4000 of Phase A current
3
IMON_B
Current monitor output, approximate current 1/3600 of Phase B current
4
IMON_C
Current monitor output, approximate current 1/3700 of Phase C current
9
OFF
Disables all Fault Mechanisms when pulled HIGH
All inputs are CMOS levels. Inputs can accept CMOS levels as low as 3.3 volts
PIN
DESCRIPTIONS
SA305
APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
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ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
SA305
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +Vs
60V
SUPPLY VOLTAGE, Vcc
5.5V
OUTPUT CURRENT, peak, 200ms
10A
POWER DISSIPATION, internal, DC
TBD
TEMPERATURE, pin solder, 10s
225C.
TEMPERATURE, junction
2
150C.
TEMPERATURE RANGE, storage
-55 to 125C.
OPERATING TEMPERATURE, case
-40 to 85C.
NOTES: 1. Unless otherwise noted: T
C
=25C, power supply voltage is typical rating. (VPWR = 50 V, Vdd = 5V).
2. Long term operation at the maximum junction temperature will result in reduced product life. De-rate internal power dissipation
to achieve high MTBF.
SPECIFICATIONS
PARAMETER
TESTCONDITIONS
MIN
TYP
MAX
UNITS
INPUTS
Logic Low Voltage
1
V
Logic High Voltage
1.8
V
POWERSUPPLY
Vs
12
60
V
Vcc
4.5
5.5
V
Supply Current, Vpwr
10 KHz (One channel switching
8.5
35
mA
at 50% duty cycle), VPWR=50V,
Vdd=5V
Supply Current, Vdd
10 KHz (One channel switching
4
6
mA
at 50% duty cycle), VPWR=50V,
Vdd=5V
ANALOG
Current Sense Linearity
Iout = 1A to 5A
0.6
1.5
%
Current Sense Linearity
Iout = 100mA to 5A
5
%
OUTPUT
Output Current, continuous
5
A
Output Current, Peak
For 200ms
10
A
Turn on delay, default
183
nS
Turn off delay, default
240
nS
Switching time, on, default
47
nS
Switching time, off, default
52
nS
On resistance, PCHAN FET
5A Load (Room Temperature)
325
600
m
On resistance, NCHAN FET
5A Load (Room Temperature)
250
600
m
Short circuit turn off time
TBD
nS
Thermal Shutdown
155
160
C
Thermal Warning
135
C
Overcurrent Shutdown
10
12
A
THERMAL
RESISTANCE, junction to case
Full temperature range
0.95
TBD
C/W
RESISTANCE, junction to air
Full temperature range
TBD
C/W
TEMPERATURE RANGE, case
-40
85
C
APEX MICROTECHNOLOGY CORPORATION 5980 NORTH SHANNON ROAD TUCSON, ARIZONA 85741 USA APPLICATIONS HOTLINE: 1 (800) 546-2739
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TYPICAL PERFORMANCE
GRAPHS
SA305
APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
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TYPICAL PERFORMANCE
GRAPHS
SA305
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