Apex SA16 Datasheet

SA16

USA BeO

∆

TE949311

PULSE WIDTH MODULATION AMPLIFIER

MICROTECHNOLOGY

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

FEATURES

• HALF BRIDGE OUTPUT

• WIDE SUPPLY RANGE—16-500V

• 10A CONTINUOUS TO 75°C CASE

• 3 PROTECTION CIRCUITS

• ANALOG OR DIGITAL INPUTS

• SYNCHRONIZED OR EXTERNAL OSCILLATOR

• FLEXIBLE FREQUENCY CONTROL

APPLICATIONS

• MOTORS

• REACTIVE LOADS

• LOW FREQUENCY SONAR

• LARGE PIEZO ELEMENTS

• OFF-LINE DRIVERS

• C-D WELD CONTROLLER

DESCRIPTION

The SA16 is a half bridge pulse width modulation amplifier
that can supply 5000W to the load. Flexible frequency control
is provided. An internal 45kHz oscillator requires no external
components and can be used to synchronize multiple ampli­fiers. The oscillator output may be divided down and con­nected to the clock input to lower the switching frequency . The
clock input stage divides by two and determines the output
switching rate (normally 22.5 kHz). A shutdown input turns off
both output drivers. High side current sensing protects the
amplifier from shorts to ground. In addition, the half bridge
output MOSFETs are protected from thermal overloads by
directly sensing the temperature of the die. The 12-pin her­metic MO-127/40S power package occupies only 3 square
inches of board space.

BLOCK DIAGRAM AND TYPICAL APPLICATION
PROGRAMMABLE POWER SUPPLY

SA16

EXTERNAL CONNECTIONS

NC

CLK IN

CLK OUT

+PWM

–PWM/RAMP

SIG GND

1
2
3

TOP

TOP

VIEW

VIEW

4
5
6

SHDN

Case tied to pin 5. Allow no current in case. Bypassing of supplies
is required. Package is Apex MO-127/40S. See Outline
Dimensions/Packages in Apex data book.

If +PWM < RAMP/–PWM then OUT = HIGH.
*See text.

12
11
10

9
8
7

NC

*

VCC

*

+VS

OUT
PWR GND

Vcc

10

+PWM

3

CLK OUT

CLK IN

SIG GND

4

470pF

56K

2

1

5

–PWM/RAMP

CONTROL

SIGNAL

3/7V

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5V

÷2OSC

10V
P-P

CURRENT

LIMIT

PWM

OUTPUT
DRIVERS

SHUTDOWN

CONTROL

5V

9

+V

OUT

8

12

NC

NC

11

6

SHDN

7

PWR GND

S

LOAD

5K

.01µF

RSENSE

SA16

ABSOLUTE MAXIMUM RATINGS

SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

SUPPLY VOLTAGE, +V
SUPPLY VOLTAGE, V
POWER DISSIPATION, internal 150W
TEMPERATURE, pin solder - 10s 300°C
TEMPERATURE, junction

S

CC

2

500V
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 45 46 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

R

ON

EFFICIENCY, 10A output VS = 500V 97 %
SWITCHING FREQUENCY OSC in ÷ 2 22.05 22.5 22.95 kHz
CURRENT, continuous
CURRENT, peak

4

4

Each output driver .48 Ω

75°C case 10 A

14 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 .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 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 SA16 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]