Apex SA08 Datasheet

MICROTECHNOLOGY

FEATURES

PULSE WIDTH MODULATION AMPLIFIER

SA08

HTTP://WWW.APEXMICROTECH.COM (800) 546-APEX [phone]

• IGBT OUTPUTS

• WIDE SUPPLY RANGE—16-500V

• 20A TO 100°C CASE

• 3 PROTECTION CIRCUITS

• SYNCHRONIZED OR EXTERNAL OSCILLATOR

• FLEXIBLE FREQUENCY CONTROL

APPLICATIONS

• MOTORS

• REACTIVE LOADS

• MAGNETIC BEARINGS

• LARGE PIEZO ELEMENTS

• OFF-LINE DRIVERS

• C-D WELD CONTROLLER

DESCRIPTION

The SA08 is a pulse width modulation amplifier that can
supply 10KW to the load. An internal oscillator requires no
external components. The clock input stage divides the oscil­lator frequency by two, which provides the switching fre­quency of 22.5 kHz. The oscillator may also be used 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 IGBTs
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
MOTOR TORQUE CONTROL

Vcc

10

+PWM

3
4

CONTROL

SIGNAL

3/7V

FLAG

CLK OUT

CLK IN

GND

470pF

45K

2

1

5

÷2OSC

SA08

∆

USA BeO

TE949311

EXTERNAL CONNECTIONS

ISENSE A

CLK IN

CLK OUT

+PWM

FLAG

GND

1
2
3

TOP

TOP

VIEW

VIEW

4
5
6

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.

*See text. As +PWM goes more positive, A OUT duty cycle
increases.

CURRENT
LIMIT

PWM

OUTPUT

DRIVERS

SHUTDOWN

CONTROL

9

+V

S

B OUT

8

11

A OUT

I SENSE A

12

6

ILIM/SHDN

7

I SENSE B RSENSE

.1µF

12
11
10

9
8
7

*

A OUT

*

VCC

+VS

B OUT
I SENSE B

MOTOR

5K

5K

RSENSE

5K

5V

5V

APEX MICROTECHNOLOGY CORPORATION • TELEPHONE [phone] • FAX [phone] • ORDERS [phone] • EMAIL [e-mail]

SA08

ABSOLUTE MAXIMUM RATINGS

SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

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

S

CC

1

2

500V
16V
250W

150°C
TEMPERATURE, storage –65 to +150°C
OPERATING TEMPERATURE RANGE, case –55 to +125°C
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
CLK IN, low level
CLK IN, high level

4

4

4

4

I

≤ 1mA 4.8 5.3 V

OUT

I

≤ 1mA 0 .4 V

OUT

0.9V

3.7 5.4 V

FREQUENCY 44.10 45.00 46.90 kHz

ANALOG INPUT (+PWM)

center voltage 5V
P-P voltage 0/100% modulation 4 V

FLAG

FLAG, high level 10 V
FLAG, low level 0V

OUTPUT

TOTAL DROP I = 20A 5.4 V
EFFICIENCY, 20A output VS = 380V 98 %
SWITCHING FREQUENCY OSC in ÷ 2 22.05 22.50 22.95 kHz
CURRENT, continuous
CURRENT, peak

4

4

100°C case 20 A

28 A

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 90 mA

5

240 500 V

TRIP POINT 90 110 mV
INPUT CURRENT 100 nA

THERMAL

3

RESISTANCE, junction to case Full temperature range, for each die 1 °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 125W.

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 SA08 is constructed from static sensitive components. 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]

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