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Part: SA14U
Category:
Analog & Mixed-Signal Processing
-> Amplifiers
-> Audio/Power Amplifiers
Description: PWM Amplifier
Company: Apex Microtechnology Corporation
Datasheet: Download SA14U datasheet File size : 70 kB
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Datasheet text preview:
PULSE WIDTH MODULATION AMPLIFIER
SA14
MICROTECHNOLOGY
HTTP://WWW.APEXMICROTECH.COM
(800) 546-APEX
(800) 546-2739
FEATURES
· · · · · · · HALF BRIDGE OUTPUT 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
SA14
USA TE9493 11
BeO
APPLICATIONS
· · · · · · MOTORS REACTIVE LOADS LOW FREQUENCY SONAR LARGE PIEZO ELEMENTS OFF-LINE DRIVERS C-D WELD CONTROLLER
EXTERNAL CONNECTIONS
NC
DESCRIPTION
The SA14 is a half bridge pulse width modulation amplifier that can supply 4000W 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 power package occupies only 3 square inches of board space.
CLK IN CLK OUT +PWM PWM/RAMP SIG GND SHDN
1 2 3 4 5 6 TOP VIEW
12 11 10 9 8 7
NC * VCC * +VS OUT PWR GND
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 OUT = HIGH. *See text.
BLOCK DIAGRAM AND TYPICAL APPLICATION PROGRAMMABLE POWER SUPPLY
Vcc 10 +PWM 3 PWM 4 PWM/RAMP 470pF 56K CLK OUT 2 OSC ÷2 10V P-P
CURRENT LIMIT
9 +VS
OUT OUTPUT DRIVERS 8 12 NC NC LOAD
CLK IN 1 5 CONTROL SIGNAL 3/7V 5V SIG GND
SHUTDOWN CONTROL
11 6 SHDN 7 PWR GND
5K .01µF
RSENSE
5V
APEX MICROTECHNOLOGY CORPORATION · TELEPHONE (520) 690-8600 · FAX (520) 888-3329 · ORDERS (520) 690-8601 · EMAIL prodlit@apexmicrotech.com
SA14
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +VS SUPPLY VOLTAGE, VCC POWER DISSIPATION, internal TEMPERATURE, pin solder - 10s TEMPERATURE, junction2 TEMPERATURE, storage OPERATING TEMPERATURE RANGE, case INPUT VOLTAGE, +PWM INPUT VOLTAGE, PWM INPUT VOLTAGE, ILIM TEST CONDITIONS2 MIN
ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS
200V 16V 150W 300°C 150°C 65 to +150°C 55 to +125°C 0 to +11V 0 to +11V 0 to +10V TYP MAX UNITS
SPECIFICATIONS
PARAMETER 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 OUTPUT R ON EFFICIENCY, 10A output SWITCHING FREQUENCY CURRENT, continuous4 CURRENT, peak4 POWER SUPPLY VOLTAGE, VS V O L T A G E , VCC C U R R E N T , V CC CURRENT, VCC, shutdown CURRENT, VS ILIM / S H U T D O W N TRIP POINT INPUT CURRENT THERMAL3 RESISTANCE, junction to case RESISTANCE, junction to air TEMPERATURE RANGE, case NOTES: 1. 2. 3. 4. 5.
IOUT 1mA IOUT 1mA
4.8 0 44 0 3.7
45 5 4
5.3 .4 46 .9 5.4
V V kHz V V V V
Each output driver VS = 200V OSC in ÷ 2 85°C case
.11 22.05 20 30 97 22.5 22.95
% kHz A A
Full temperature range Full temperature range IOUT = 0 No Load
16 5 14
120 15
200 16 80 50 50
V V mA mA mA
90
110 100
mV nA
Full temperature range, for each die Full temperature range Meets full range specifications
.83 12 25 +85
°C / W °C / W °C
Each of the two output transistors can dissipate 150W. Unless otherwise noted: TC = 25°C, VS, VCC at typical specification. 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. Guaranteed but not tested. If 100% duty cycle is not required VS(MIN) = 0V. The SA14 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.
CAUTION
APEX MICROTECHNOLOGY CORPORATION · 5980 NORTH SHANNON ROAD · TUCSON, ARIZONA 85741 · USA · APPLICATIONS HOTLINE: 1 (800) 546-2739
TYPICAL PERFORMANCE GRAPHS
SA14
CLOCK LOADING
NORMALIZED FREQUENCY, (%) NORMALIZED FREQUENCY, (%)
100 99 98
INTERNAL POWER DISSIPATION, (W)
POWER DERATING
150 125 100 75 50 25 0 0 25 50 125 75 100 CASE TEMPERATURE, (°C)
EACH ACTIVE OUTPUT TRANSISTOR
CLOCK FREQUENCY OVER TEMP
102.0 101.5 101.0 100.5 100 99.5 99.0 98.5 98.0 25 50 75 100 125 50 25 0 CASE TEMPERATURE, (°C)
97 96 F NOMINAL = 45kHz 95 10K 100K 1M CLOCK LOAD RESISTANCE, ()
REVERSE DIODE
2
TOTAL VOLTAGE DROP
5 CASE TEMPERATURE 85°C 100°C 125°C 2 1 0 0
FLYBACK CURRENT, Isd (A)
10
TOTAL VOLTAGE DROP, (V)
8 7 6 5 4 3 2
4 3
1
8 7 6 5 4 3 2
0.8 1.0 1.2 1.4 1.6 0.6 SOURCE TO DRAIN DIODE VOLTAGE
60°C 25°C 55°C 25°C 5 10 15 20 OUTPUT CURRENT, (A)
CONTINUOUS OUTPUT
20
DUTY CYCLE VS ANALOG INPUT
100 80
NORMALIZED Vcc QUIESCENT CURRENT, (%)
Vcc QUIESCENT CURRENT
100 95 90 85 80 75
CONTINUOUS AMPS
DUTY CYCLE, (%)
18
60 40 20 0 3
16
14
12 25
50 75 100 125 150 CASE TEMPERATURE, (°C)
4 5 6 ANALOG INPUT, (V)
7
5 10 15 20 25 SWITCHING FREQUENCY, F (kHz)
NORMALIZED Vcc QUIESCENT CURRENT, (%)
NORMALIZED Vs QUIESCENT CURRENT, (%)
115 110 105 100 95 90 85 80 50 25 0 25 50 75 100 125 CASE TEMPERATURE, (°C) SHUTDOWN OPERATION NORMAL OPERATION Vcc = 15V F = 22.5 kHz
140 120 100 80 60 40 20 0 25 50 75 100 125 150 175 200 Vs, (V)
NORMALIZED Vs QUIESCENT CURRENT, (%)
Vcc QUIESCENT CURRENT
Vs QUIESCENT VS VOLTAGE
Vs QUIESCENT VS FREQUENCY
100 Vs = 120V, NO LOAD 80
60
40
20 10 15 20 5 25 SWITCHING FREQUENCY, F (kHz)
APEX MICROTECHNOLOGY CORPORATION · TELEPHONE (520) 690-8600 · FAX (520) 888-3329 · ORDERS (520) 690-8601 · EMAIL prodlit@apexmicrotech.com
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