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APEX

SA12 Datasheet Preview

SA12 Datasheet

Pulse Width Modulation Amplifiers

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SA12
Pulse Width Modulation Amplifiers
SAS1A122
FEATURE
• HIGH FREQUENCY SWITCHING — 200 kHz
• WIDE SUPPLY RANGE—16-200V
• 15A CONTINUOUS TO 65°C CASE
• 3 PROTECTION CIRCUITS
• ANALOG OR DIGITAL INPUTS
• SYNCHRONIZED OR EXTERNAL OSCILLATOR
• FLEXIBLE FREQUENCY CONTROL
APPLICATIONS
• REACTIVE LOADS
• LOW FREQUENCY SONAR
• LARGE PIEZO ELEMENTS
• OFF-LINE DRIVERS
• C-D WELD CONTROLLER
12-PIN POWER DIP
PACKAGE STYLE CR
EXTERNAL CONNECTIONS
DESCRIPTION
The SA12 is a pulse width modulation amplifier that can
supply 3000W to the load. An internal 400kHz oscillator re-
quires no external components. The clock input stage divides
the oscillator frequency by two, which provides the 200 kHz
switching frequency. External oscillators may also be used to
lower the switching frequency or to synchronize multiple ampli-
fiers. Current sensing is provided for each half of the H-bridge
giving amplitude and direction data. A shutdown input turns
off all four drivers of the H-bridge output. A high side current
limit and the programmable low side current limit protect the
amplifier from shorts to supply or ground in addition to load
shorts. The H-bridge output MOSFETs are protected from
thermal overloads by directly sensing the temperature of the
die. The 12-pin hermetic MO-127 power package occupies
only 3 square inches of board space.
BLOCK DIAGRAM AND TYPICAL APPLICATION
TORQUE MOTOR DRIVER
Vcc 10
+PWM 3
–PWM/RAMP 4
100pF 28K
CLK OUT 2
OSC
÷2
CONTROL
SIGNAL
5V
CLK IN 1
GND 5
CLK IN
CLK OUT
+PWM
-PWM/RAMP
GND
ILIM/SHDN
1 12
2 11
3 TOP 10
4 VIEW 9
58
67
ISENSE A
A OUT
* VCC
* +VS
B OUT
I SENSE B
Case tied to pin 5. Allow no current in case. Bypassing of supplies
is required. Package is Apex MO-127 (STD). See Outline
Dimensions/Packages in Apex data book.
*See text. As +PWM goes more positive, A OUT duty cycle
increases.
CURRENT
LIMIT
PWM
OUTPUT
DRIVERS
SHUTDOWN
CONTROL
9 +VS
8 B OUT
11 A OUT
MOTOR
I SENSE A
12
6 ILIM/SHDN
7 I SENSE B
1K
5K
.01μF
RSENSE
1K
RSENSE
SwAw1w2.Uapexanalog.com
5V
Copyright © Apex Microtechnology, Inc. 2014
(All Rights Reserved)
SAS1E2PUTR2E0V1L41




APEX

SA12 Datasheet Preview

SA12 Datasheet

Pulse Width Modulation Amplifiers

No Preview Available !

SA12
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
SUPPLY
SUPPLY
VOLTAGE,
VOLTAGE,
V+VCCS
POWER DISSIPATION, internal
TEMPERATURE, pin solder - 10s
TEMPERATURE, junction3
TEMPERATURE, storage
OPERATING TEMPERATURE RANGE, case
INPUT VOLTAGE, +PWM
INPUT VOLTAGE, –PWM
INPUT VOLTAGE, ILIM
PARAMETER
TEST CONDITIONS2
MIN
TYP
CLOCK (CLK)
CLK OUT, high level4
CLK OUT, low level4
FREQUENCY
RAMP, center voltage
RAMP, P-P voltage
CLK IN, low level4
CLK IN, high level4
IOUT ≤ 1mA
IOUT ≤ 1mA
4.8
0
392 400
5
4
0
3.7
OUTPUT
TEOFFTAICLIERNONC4Y, 10A output
SWITCHING FREQUENCY
CURRENT, continuous4
CURRENT, peak4
VOSS=C2in00÷V2
65°C case
97
196 200
15
20
POWER SUPPLY
VOLTAGE,
VOLTAGE,
VVSCC
CURRENT, VCC
CURRENT, VCC, shutdown
CURRENT, VS
ITLRIM/ISPHPUOTINDTOWN
INPUT CURRENT
Full temperature range
Full temperature range
IOUT = 0
No Load
16 120
14 15
90
THERMAL3
RESISTANCE, junction to case
RESISTANCE, junction to air
TEMPERATURE RANGE, case
Full temperature range, for each die
Full temperature range
Meets full range specifications
–25
12
200V
16V
250W1
350°C
150°C
–65 to +150°C
–55 to +125°C
0 to +11V
0 to +11V
0 to +10V
MAX UNITS
5.3 V
.4 V
408 kHz
V
V
.9 V
5.4 V
.4 Ω
%
204 kHz
A
A
200 V
16 V
125 mA
80 mA
200 mA
110 mV
100 nA
1 °C/W
°C/W
+85 °C
NOTES: 1.
2.
3.
4.
Each of the two active output transistors can dissipate 125W.
ULonnlegstseromtheorpweirsaetionnotaetdt:hTeC
m= a2x5i°mCu,mVSj,uVncCCtioant
typical specification.
temperature will result
in
reduced
product
life.
Derate
internal
power
dissipation to achieve high MTTF. For guidance, refer to the heatsink data sheet.
Guaranteed but not tested.
CAUTION
The SA12 is constructed from MOSFET transistors. ESD handling procedures must be observed.
The internal substrate contains beryllia (BeO). Do not break the seal. If accidentally broken, do not crush,
machine, or subject to temperatures in excess of 850°C to avoid generating toxic fumes.
2 SA12U


Part Number SA12
Description Pulse Width Modulation Amplifiers
Maker APEX
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SA12 Datasheet PDF






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