SA50CE Datasheet, PDF (2/4 Pages) Cirrus Logic – H-BRIDGE MOTOR DRIVER/AMPLIFERS

ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
SA50CE
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +V_S
OUTPUT CURRENT, peak
LOGIC SUPPLY VOLTAGE, Vcc
POWER DISSIPATION, internal
TEMPERATURE, pin solder - 10s
TEMPERATURE, junction³
TEMPERATURE, storage
OPERATING TEMPERATURE RANGE, case
INPUT VOLTAGE
SPECIFICATIONS
PARAMETER
TEST CONDITIONS²
MIN
TYP
80V⁵
7A
16V
72W¹
300°C
175°C
–65 to +150°C
–65 to +125°C
+1V to Vcc – 1.5 Vdc
MAX
UNITS
INPUT
ANALOG INPUT VOLTAGES
Vcc = 9.5V to 15V
  MOTOR A, B = 50% Duty Cycle
V_CC /2
V
  MOTOR A = 100% Duty Cycle High⁶
2V_CC /3
V
  MOTOR B = 100% Duty Cycle High⁶
V_CC /3
V
OUTPUT
Vds (ON) VOLTAGE, each MOSFET Ids = 5A
1.0
1.3
Vdc
TOTAL Ron, both MOSFETs
0.4
Ω
EFFICIENCY, 5A OUTPUT
+V_S = 80V
SWITCHING FREQUENCY
40
95
%
45
50
kHz
CURRENT, continuous
5
A
CURRENT, peak
t = 100 m-sec
7
A
SWITCHING CHARACTERISTICS⁴
+V_S = 28V, Vcc = 12V, Ic =2A
  RISE TIME
36
54
ns
  FALL TIME
170
250
ns
  DEAD TIME
100
ns
POWER SUPPLY
+V_S VOLTAGE⁵
+V_S I = Load I
Vcc VOLTAGE
9.5
12
Vcc CURRENT
Vcc = 12Vdc
20
80
V
15
V
30
mA
THERMAL³
RESISTANCE, junction to case
Full temp range, for each transistor
2.0
RESISTANCE, junction to air
Full temperature range
30
TEMPERATURE RANGE, case
–40
+85
°C/W
°C/W
°C
NOTES: 1. Each of the two active output transistors can dissipate 36W. This is an output FET rating only; normal operation at worst case
conditions and maximum duty cycle only causes 19 watts internal heat generation in each active output FET. Use 40 watts
maximum to size heatsink.
2. Unless otherwise noted: T_C = 25°C, Vcc = 12Vdc.
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. Derate linearly to 70V at – 40°C from T_C = +25°C.
  CAUTION
The SA50CE 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.
  WARNING—AMPLIFIER PROTECTION
The SA50CE contains an internal logic chip that turns on
and turns off output MOSFET drivers at a certain sequence.
Noises or oscillation caused by external wiring inductance,
lack of proper power supply bypass capacitors, ground, sup-
ply and local internal loops, may be fed back to this logic chip
and cause it to turn on one or more MOSFET drivers at the
wrong time, thus destroying the SA50CE. A well laid out PC
board with low impedance copper ground plane and excellent
bypassing is necessary for the SA50CE to function properly.
A low ESR high frequency bypass capacitor, such as a 0.1 µf
100V X7R ceramic, or better, should be mounted as close to
the Vs and ground pins as possible to avoid radiation of high
frequency transients on the power supply wiring. The Apex
EK-SA50CE evaluation board is recommended for fast and
easy breadboarding of circuits using the SA50CE.
APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: [phone]