Apex SA04 Datasheet

MICROTECHNOLOGY

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FEATURES

• WIDE SUPPLY RANGE—16-200V

• 20A CONTINUOUS TO 85°C CASE

• 3 PROTECTION CIRCUITS

• ANALOG OR DIGITAL INPUTS

• SYNCHRONIZED OR EXTERNAL OSCILLATOR

• FLEXIBLE FREQUENCY CONTROL

APPLICATIONS

• MOTORS TO 4HP

• REACTIVE LOADS

• LOW FREQUENCY SONAR

• LARGE PIEZO ELEMENTS

• OFF-LINE DRIVERS

• C-D WELD CONTROLLER

PULSE WIDTH MODULATION AMPLIFIER

SA04

EXTERNAL CONNECTIONS

∆

USA BeO

TE949311

SA04

DESCRIPTION

The SA04 is a pulse width amplifier that can supply 4000W
to the load. An internal 45kHz oscillator requires no external
components. The clock input stage divides the oscillator
frequency by two, which provides the basic switching of 22.5
kHz. External oscillators may also be used to lower the
switching frequency or to synchronize multiple amplifiers.
Current sensing is provided for each half of the 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 12­pin hermetic MO-127 power package occupies only 3 square
inches of board space.

BLOCK DIAGRAM AND TYPICAL APPLICATION
TORQUE MOTOR DRIVER

CONTROL

SIGNAL

3/7V

Vcc

+PWM

–PWM/RAMP

CLK OUT

CLK IN

GND

10

3
4

470pF

56K

2

1

5

÷2OSC

CLK IN

CLK OUT

+PWM

–PWM/RAMP

GND

1
2
3

TOP

TOP

VIEW

VIEW

4
5
6

12
11
10

9
8
7

*

*

ILIM/SHDN

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.

If +PWM > RAMP/–PWM then A OUT > B OUT.
*See text.

CURRENT

LIMIT

PWM

OUTPUT

DRIVERS

SHUTDOWN

CONTROL

9

+V

B OUT

8

11

A OUT

I SENSE A

12

6

ILIM/SHDN

7

I SENSE B

S

MOTOR

1K

5K

RSENSE

.01µF

1K

RSENSE

ISENSE A
A OUT

VCC

+VS

B OUT
I SENSE B

5V

5V

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SA04

ABSOLUTE MAXIMUM RATINGS

SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

SUPPLY VOLTAGE, +V
SUPPLY VOLTAGE, V
POWER DISSIPATION, internal 300W
TEMPERATURE, pin solder - 10s 300°C
TEMPERATURE, junction

S

CC

2

200V
16V

150°C
TEMPERATURE, storage –65 to +150°C
OPERATING TEMPERATURE RANGE, case –55 to +125°C
INPUT VOLTAGE, +PWM 0 to +11V
INPUT VOLTAGE, –PWM 0 to +11V

SPECIFICATIONS

INPUT VOLTAGE, I

PARAMETER TEST CONDITIONS

LIM

2

MIN TYP MAX UNITS

0 to +10V

CLOCK (CLK)

CLK OUT, high level
CLK OUT, low level
FREQUENCY 44.10 45.00 46.90 kHz

4

4

I

≤ 1mA 4.8 5.3 V

OUT

I

≤ 1mA 0 .4 V

OUT

RAMP, center voltage 5V
RAMP, P-P voltage 4V
CLK IN, low level
CLK IN, high level

4

4

0.9V

3.7 5.4 V

OUTPUT

TOTAL R
EFFICIENCY, 10A output VS = 200V 97 %
SWITCHING FREQUENCY OSC in ÷ 2 22.05 22.50 22.95 kHz
CURRENT, continuous
CURRENT, peak

ON

4

4

85°C case 20 A

30 A

.22 Ω

POWER SUPPLY

VOLTAGE, V
VOLTAGE, V
CURRENT, V
CURRENT, V
CURRENT, V

I

/SHUTDOWN

LIM

S
CC

CC

shutdown 50 mA

CC,
S

Full temperature range 16
Full temperature range 14 15 16 V
I

= 0 80 mA

OUT

No Load 50 mA

5

120 200 V

TRIP POINT 90 110 mV
INPUT CURRENT 100 nA

THERMAL

3

RESISTANCE, junction to case Full temperature range, for each die .83 °C/W
RESISTANCE, junction to air Full temperature range 12 °C/W
TEMPERATURE RANGE, case Meets full range specifications –25 +85 °C

NOTES: 1. Each of the two active output transistors can dissipate 150W.

2. Unless otherwise noted: TC = 25°C, VS, VCC at typical specification.

3. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power
dissipation to achieve high MTTF. For guidance, refer to the heatsink data sheet.

4. Guaranteed but not tested.

5. If 100% duty cycle is not required V

CAUTION

The SA04 is constructed from MOSFET transistors. ESD handling procedures must be observed.

S(MIN)

= 0V.

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.

APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: [phone]