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Part: 0722MG
Category:
Analog & Mixed-Signal Processing
Description: ti 0722, Dual-isolated DC/DC Converter
Company: Texas Instruments, Inc.
Datasheet: Download 0722MG datasheet File size : 187 kB
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Datasheet text preview:
722
SBVS016A - SEPTEMBER 1978 REVISED JANUARY 2003
DUAL ISOLATED DC/DC CONVERTER
DESCRIPTION
The 722 converts a single 5VDC to 16VDC input into a pair of bipolar output voltages of the same value as the input voltage. The converter is capable of providing a total output current of 64mA at rated voltage accuracy and up to 200mA without damage. The two output channels are isolated from the input and from each other. They may be connected independently, in series for higher output voltage or in parallel for higher output current, as a single channel isolated DC/DC converter. Integrated circuit construction of the 722 reduces size and cost. High isolation breakdown voltages and low leakage currents are assured by special design and construction that includes use of a high dielectric strength, low leakage coating used on the internal assembly. A self-contained 900kHz oscillator drives switching circuitry, which is designed to eliminate the common problem of input current spiking due to transformer saturation or crossover switching.
FEATURES
q DUAL ISOLATED ±5V TO ±16V OUTPUTS q HIGH BREAKDOWN VOLTAGE: 8000V Test q LOW LEAKAGE CURRENT: < 1µA at 240V/60Hz q LOW COST PER ISOLATED CHANNEL q SMALL SIZE: 27.9mm x 27.9mm x 7.6mm (1.1" x 1.1" x 0.3")
APPLICATIONS
q MEDICAL EQUIPMENT q INDUSTRIAL PROCESS CONTROL q TEST EQUIPMENT q DATA ACQUISITION SYSTEMS q NUCLEAR INSTRUMENTATION
P+ 11 V+ 20
Rectifiers and Filters
1 2 3
+VO1 C1 VO1
E 18
Oscillator and Switch Drivers
Rectifiers and Filters
10 +VO2 9 8 C2 VO2
V 16
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright © 2003, Texas Instruments Incorporated
www.ti.com
PACKAGE /ORDERING INFORMATION
PACKAGE DESIGNATOR(1) JND JND JND SPECIFIED TEMPERATURE RANGE(2) 25°C to +85°C 25°C to +85°C 25°C to +85°C PACKAGE MARKING 722 722BG 722MG ORDERING NUMBER 722G 722BG 722MG TRANSPORT MEDIA, QUANTITY Rails, 17 Rails, 17 Rails, 17
PRODUCT 722 722BG 722MG
PACKAGE-LEAD DIP-20 DIP-20 DIP-20
NOTES: (1) For the most current specifications, and package information, refer to our web site at www.ti.com. (2) 25°C to +60°C for 16mA ILOAD 40mA per output.
ABSOLUTE MAXIMUM RATINGS(1)
Supply Voltage, V+ to V ............ 16V Input Current .. 275mA Operating Temperature .... 25°C to +80°C Storage Temperature ...... 55°C to +125°C Junction Temperature ..... 55°C to +125°C NOTE: (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied.
ELECTROSTATIC DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
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SBVS016A
ELECTRICAL CHARACTERISTICS
At TA = +25°C, VIN = 15VDC, C = 0.47µF, and R1 selected per typical characteristic, unless otherwise noted. 722 PARAMETER INPUT Rated Input Voltage Input Voltage Range(1) Input Current CONDITIONS MIN TYP 15 5 Total Output Current = 12mA Total Output Current = 64mA Total Output Current = 64mA at TA = +85°C Total Output Current = 160mA Total Output Current = 12mA Total Output Current = 64mA Total Output Current = 160mA Input-to-Output, 5 seconds, min Input-to-Output, 1 minute, min Channel-to-Channel, 5 seconds, min Input-to-Output, continuous Channel-to-Channel, continuous Input-to-Output Input-to-Output, 240V, 60Hz ILOAD = 3mA per Output ILOAD = 16mA per Output ILOAD = 40mA per Output Total of All Outputs Any One Output(5) ILOAD = 3mA per Output ILOAD = 16mA per Output ILOAD = 40mA per Output Balanced Loads 15.4 14.3 -- 3
(5)
722BG MAX MIN TYP 16 225 12 MAX MIN
722MG TYP -- -- MAX UNITS VDC VDC mA mA mA mA mA, pk mA, pk mA, pk Vpk Vrms Vpk V V G || pF µA VDC VDC VDC mA mA mVpk mVpk mVpk mVDC
50 105 120 -- 3 6 --
120
--
275
--
Input Ripple(2)
ISOLATION Test Voltages
Rated Voltages Isolation Impedance Leakage Current(3) OUTPUT Rated Output Voltages(4)
8000 -- 5000 3500 2000 10 || 6 1 16.2 16.2 -- 200 100
--
2500 -- --
--
13.0
14.2
Output Current Load Regulation Ripple Voltage
16.2
--
Tracking Error between Dual Outputs Sensitivity to Input Voltage Changes Output Voltage Temperature Coefficient TEMPERATURE Specification Storage Junction Temperature Specifications same as 722.
15 35 -- ±200
100
50
TA = TSPECIFICATION RANGE
1.13 ±0.02
V/V %/°C
ILOAD 16mA per Output ILOAD 40mA per Output
25 25 55
+85 +60 +125 +125
°C °C °C °C
NOTES: (1) For ambient temperature above +70°C, the input voltage is 12.5V (max). The input voltage remains 16V (max) if case temperature is kept below +85°C. (2) External capacitor across P+ to V pins and 12" of #24 wire to VIN. (3) Reference UL544, paragraph 27.5, Leakage Current. (4) See Typical Characteristics. (5) A minimum output current of 3mA at each output is recommended to maintain output voltage accuracy.
722
SBVS016A
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TYPICAL CHARACTERISTICS
At TA = +25°C, VIN = 15VDC, C = 0.47µF, and R1 selected per typical characteristic, unless otherwise noted. SELECTION OF R1 OR EXTERNAL VOLTAGE V+ FOR MINIMUM INTERNAL POWER DISSIPATION
Maximum Ambient Temperature °C
MAXIMUM SAFE OPERATING TEMPERATURE vs TOTAL OUTPUT CURRENT 125 Case 100 100 125
Maximum Case Temperature(1) (°C)
Input Voltage (V)
>13 11 to 13 9 to 11 8 to 9 <8 V+EXT
MAXIMUM OUTPUT CURRENT FROM ANY SINGLE OUTPUT 16mA to <16mA 30mA 30mA 1.3k 820 510 820 510 200 0 6.5V 510 200 0 -- 7.5V 200 0 -- -- 9.0V
75 Ambient 50
75
50
25 0 0 50 100
(2)
25 0 150 (mA) 200 Total Output Current
OUTPUT VOLTAGE vs INPUT VOLTAGE 18 Total Output Current = 12mA
SINGLE-CHANNEL LOAD REGULATION 16
Output Load Voltage, |VLOAD| (V)
V + V
IF = 16mA 15 IF
Load Load
IF
IF = 3mA
IF
Output Voltage (V)
+ VO + VO
+
IL
IL
13 Total Output Current = 64mA
8 Total Output Current = 200mA
14 IF = 50mA
3 4 8 Input Voltage (V) 12 16
13 0 20 40 60 80 100 Output Load Current |IL| (mA)
SINGLE OUTPUT LOAD REGULATION 16
CHANNEL-TO-CHANNEL INTERACTION
Opposite Channel, Output Voltage, |VN| (V)
Output Load Voltage, |VLOAD| (V)
Load
IF = 3mA IF = 16mA 15 IF
IF
+ VO +
+ V + IF
IL
16 IF = 3mA
VO VO
15
IF = 16mA
14
IF = 50mA
14
VN +
V + V 80
IF 13 0 20 40 60
VN
13 0 20 40 60 80 100 Output Load Current |IL| (mA)
Load
IF = 50mA
IF
+
+
IL
100
Output Load Current |IL| (mA)
NOTES: (1) Using a 104mm x 19mm x 1.6mm aluminum strip mounted to the bottom of the case with heat sink compound. (2) Total output current is the sum of the currents for each individual output.
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SBVS016A
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, VIN = 15VDC, C = 0.47µF, and R1 selected per typical characteristic, unless otherwise noted.
PARALLEL OUTPUT BALANCED LOAD REGULATION 16
16
PARALLEL OUTPUT UNBALANCED LOAD REGULATION
Output Load Voltage, |VLOAD| (V)
Output Load Voltage, |VLOAD| (V)
V IF = 6mA 15 VO IF = 100mA 14
V
Load
IL
IF VO
15
14
V
V
Load Load
IL
IL
V 13 0
V
IF = 32mA 13 0 40 80 120 160 200
20
40
60
80
100
Output Load Current |IL| (mA)
Output Load Current |IL| (mA)
OUTPUT-TO-OUTPUT INTERACTION
Opposite Output, Output Voltage, |VN| (V)
16 IF = 6mA 15 IF = 32mA V V
Load
IL
IF VN VN
14
IF = 100mA
13 0 40 80 120 160 200 Output Load Current |IL| (mA)
722
SBVS016A
www.ti.com
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