SA305
M I C R O T E C H N O L O G Y
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
protection 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.
23 PIN SIP
PACKAGE STYLE EX
EXTERNAL CONNECTIONS
BLOCK DIAGRAM
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
1
SA305
DETAILED BLOCK DIAGRAM (1 PHASE SHOWN)
BLOCK
DIAGRAM
TYPICAL APPLICATION
The SA305 offers a level of power integration unmatched by others in the field of fractional HP brushless motor control.
μ
μ
μ
μ
μ
APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: 1 (800) 546-2739
2
PIN
DESCRIPTIONS
SA305
PIN DESCRIPTIONS
Pin #
10,21
17
22
13
2
1,23
11
19
18
8
Pin name
Vs
Vdd
OutA
OutB
OutC
PGND
SGND
DISABLE
Warning
FAULT
16
15
12
14
7
5
20
3
4
9
PWM_HA
PWM_LA
PWM_HB
PWM_LB
PWM_HC
PWM_LC
IMON_A
IMON_B
IMON_C
OFF
Description
High voltage supply (12V-60V)
Logic supply (5V)
Half bridge output
Half bridge output
Half bridge output
Power ground, high current ground return path of the bridge outputs
Analog and logic circuits ground
Disable logic Input, CMOS. When high disables all six output MOSFETs and makes the FAULT output high.
Do not leave floating at any time.
Output pin goes high if Tj rises above 135°C and goes low again if T
J
falls below 85°C.
The output pin is high under the following conditions:
a) Short-Circuit and Over Current condition.
b) When T
J
rises above 160°C until it falls below 110°C.
c) When V
S
rises above 9.8V until it falls below 9.7V.
d) Disable pin is activated (pulled high)
This can be used as an interrupt to the microcontroller.
CMOS logic input: When HIGH, indicates the Pchannel of output A is to be turned on.
CMOS logic input: When HIGH, indicates the Nchannel of output A is to be turned on.
CMOS logic input: When HIGH, indicates the Pchannel of output B is to be turned on.
CMOS logic input: When HIGH, indicates the Nchannel of output B is to be turned on.
CMOS logic input: When HIGH, indicates the Pchannel of output C is to be turned on.
CMOS logic input: When HIGH, indicates the Nchannel of output C is to be turned on.
Current monitor output, approximate current 1/4100 of Phase A current
Current monitor output, approximate current 1/3500 of Phase B current
Current monitor output, approximate current 1/3800 of Phase C current
I/O Pin. Disables all Fault Mechanisms (except under voltage lockout) when pulled LOW. Can be used as a
latched fault output but does not indicate undervoltage lockout. Leave this pin floating for normal operation.
Do not pull HIGH.
All inputs are CMOS levels. Inputs can accept CMOS levels as low as 3.3 volts.
CMOS logic inputs cannot be left floating
at any time.
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
3
SA305
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +Vs
SUPPLY VOLTAGE, Vdd
OUTPUT CURRENT, peak, 200ms
POWER DISSIPATION, internal, DC
TEMPERATURE, pin solder, 10s
TEMPERATURE, junction
2
TEMPERATURE RANGE, storage
OPERATING TEMPERATURE, case
VOLTAGE AT CMOS INPUTS
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
60V
5.5V
10A
130W
225°C
150°C
−55 to +125°C
−40 to +125°C
-0.3 to +5.5V
SPECIFICATIONS
PARAMETER
DIGITAL INPUTS
Logic Low Voltage
Logic High Voltage
Pulsewidth
DIGITAL OUTPUTS
Source Current
POWER SUPPLY
Vs
Vdd
Supply Current, Vs
Supply Current, Vdd
9.8
4.5
TEST CONDITIONS
MIN
TYP
MAX
1
UNITS
V
V
nS
mA
V
V
mA
mA
1.8
200
0.4
60
5.5
35
6
10 KHz (One channel switching
at 50% duty cycle), Vs=50V,
Vdd=5V
10 KHz (One channel switching
at 50% duty cycle), Vs=50V,
Vdd=5V
Iout = 1A to 5A
Iout = 100mA to 5A
5
8.5
4
ANALOG
Current Sense Linearity
Current Sense Linearity
OUTPUT
Output Current, continuous
Output Current, Peak
Turn on delay
Turn off delay
Switching time, on
Switching time, off
On resistance, PCHAN FET
On resistance, NCHAN FET
Short circuit turn off time
Thermal Shutdown
Thermal Warning
Overcurrent Shutdown
THERMAL
RESISTANCE, junction to case
RESISTANCE, junction to air
TEMPERATURE RANGE, case
0.6
1.5
5
5
10
%
%
A
A
nS
nS
nS
nS
mΩ
mΩ
nS
°C
°C
A
°C/W
°C/W
°C
For 200ms
5A Load (Room Temperature)
5A Load (Room Temperature)
155
10
Full temperature range
Full temperature range
183
240
47
52
325
250
300
160
135
12
0.95
12.21
600
600
165
−40
125
NOTES: 1. Unless otherwise noted: T
C
=25°C, power supply voltage is typical rating. (Vs = 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.
APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: 1 (800) 546-2739
4
TYPICAL PERFORMANCE
GRAPHS
SA305
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
5
DSP 与 ARM 处理器
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
