View ATW28XXS_4851569.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

PD-94556A
ATW28XXS SERIES
28V Input, Single Output
HYBRID-HIGH RELIABILITY DC/DC CONVERTER
Description
The ATW28XXS Series of DC/DC converters feature high power density and an extended temperature range for use in military and industrial applications. Designed to MIL-STD-704 input requirements, these devices operate with a nominal 28VDC input and are available with single outputs at 5V,12V and 15V. The circuit design incorporates a pulse width modulated push-pull topology operating in the feed-forward mode at a nominal switching frequency of 270KHz. Input to output isolation is achieved through the use of transformers in the forward and feedback circuits. The advanced feedback design provides fast loop response for superior line and load transient characteristics and offers greater reliability and radiation tolerance than devices incorporating optical elements in the feedback circuits. Three standard temperature grades are offered. Refer to Part Number section. These devices are provided in a flanged package for secure mounting in severe environments. Manufactured in a facility fully qualified to MIL-PRF38534, these converters are fabricated utilizing DSCC qualified processes. For available screening options, refer to device screening table in the data sheet. Variations in electrical, mechanical and screening can be accommodated. Contact IR Santa Clara for special requirements.
ATW Features
n n n n n n n n n n n n n 19V to 40VDC Input Range (28VDC Nominal) 30W Output Power Indefinite Short Circuit and Overload Protection 3 22.8W/in Power Density Fast Loop Response for Superior Transient Characteristics Operating Temperature Range from -55C to +125C Available Popular Industry Standard Pin-Out Resistance Seam Welded Case for Superior Long Term Hermeticity Efficiencies up to 83% Shutdown from External Signal Military Screening 250,000 hour MTBF at 85C Standard Microcircuit Drawings Available
www.irf.com
1
12/14/06
ATW28XXS Series
Specifications
Absolute Maximum Ratings
Input voltage Soldering temperature Operating case temperature Storage case temperature -0.5V to +50VDC 300C for 10 seconds -55C to +125C -65C to +135C
ATW2805S
Table I. Electrical Performance Characteristics
Test Symbol Conditions -55C Tc +125C Vin = 28 Vdc 5%, CL = 0 Unless otherwise specified IOUT = 0 VIN = 19, 28, and 40 V dc VIN = 19, 28, and 40 V dc, B.W. = dc to 2MHz VIN = 19,28, and 40 V dc VIN = 19, 28, and 40 V dc, Iout = 0, 3000, and 6000mA VIN = 19, 28, and 40 V dc, IOUT = 0, 3000, and 6000mA IOUT = 0, inhibit (pin 2) tied to input return (pin 10) IOUT = 0, inhibit (pin 2) = open IOUT = 6000mA B.W. = dc to 2MHz IOUT = 6000mA TC = +25C Input to output or any pin to case (except pin 7) at 500 V dc Tc = +25C No effect on dc performance, Tc = +25C 7 Overload, TC = +25C Short circuit, TC = +25C IOUT = 6000mA 4000mA to/from 6000mA 500mA to/from 2500mA
Group A Subgroups Device Types
Limits
Unit
Output voltage Output current 2 Output ripple voltage Output power 4 Line regulation Load regulation Input current
2 1, 3 1
VOUT IOUT VRIP POUT VRLINE VRLOAD IIN IRIP EFF ISO
5, 6
1 2,3 1,2,3 1,2,3 1,2,3 1 2,3 1,2,3 1,2,3 1,2,3 1 1 4 1
All All All All All All All All All All All All
Min 4.95 4.90 0
Max 5.05 5.10 6000 50
V mA mVp-p W mV mV mA mAp-p % M
30 5.0 20 30 18 40 20 78 100 500 12 9.0 300 270 300 +500 +500
4
Input ripple current Efficiency Isolation Capacitive load
CL PD FS VOTLOAD
F W
Power dissipation load fault Switching frequency Output response to step 8 transient load changes
4,5,6 4,5,6 4,5,6
01 02 03 All
250 250 275 -500 -500
KHz mVpk
For Notes to Specifications, refer to page 3
2
www.irf.com
ATW28XXS Series
Table I. Electrical Performance Characteristics - continued
Test
Symbol
ATW2805S
Device Types
Conditions -55C Tc +125C Vin = 28 Vdc 5%, CL = 0 unless otherwise specified 4000mA to/from 6000mA
Group A Subgroups
Limits
Unit
Min Recovery time step transient load changes
8, 9
Max 100 200 100 200 500 12 12 s
TTLOAD
4 5,6 4 5,6 4,5,6 4,5,6 4,5,6
All
500mA to 2500mA Turn on overshoot 10 Turn on delay Load fault recovery
6, 10
All All All All
VTonOS TonD TrLF
IOUT = 0 and 6000mA IOUT = 0 and 6000mA
mV pk ms ms
Notes to Specifications
Parameter guaranteed by line and load regulation tests. Bandwidth guaranteed by design. Tested for 20kHz to 2.0MHz. Above +125C case, derate output power linearly to 0 at +135C. Output voltage measured at load with remote sense leads connected across load. Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive load in excess of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry, appearing as a short circuit during turn-on. 6 Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the limits specified in Table I. 7 An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power dissipation. 8 Load step transition time between 2.0s and 10s. 9 Recovery time is measured from the initiation of the transient to where V OUT has returned to within 1.0% of V OUT at 50% load. 10 Turn-on delay time measurement is for either a step application of power at the input or the removal of ground signal from the inhibit pin (pin 1) while power is applied to the input is unlimited. 1 2 3 4 5
www.irf.com
3
ATW28XXS Series
Specifications
Absolute Maximum Ratings
Input voltage Soldering temperature Operating case temperature Storage case temperature -0.5V to +50VDC 300C for 10 seconds -55C to +125C -65C to +135C
ATW2812S
Table II. Electrical Performance Characteristics
Test
Symbol Conditions -55C Tc +125C Vin = 28 Vdc 5%, CL = 0 Unless otherwise specified Group A
Subgroups
Device Types
Limits
Unit
Output voltage Output current 2 Output ripple voltage Line regulation Load regulation Input current
1
VOUT IOUT VRIP VRLINE VRLOAD IIN
IOUT = 0 VIN = 18, 28, and 40 V dc VIN = 18, 28, and 40 V dc, B.W. = 20Hz to 2MHz VIN = 18, 28, and 40 V dc, Iout = 0, 1250, and 2500mA VIN = 18, 28, and 40 V dc, IOUT = 0, 1250, and 2500mA IOUT = 0, inhibit (pin 2) tied to input return (pin 10) IOUT = 0, inhibit (pin 2) = open IOUT = 2500mA B.W. = 20Hz to 2MHz IOUT = 2500mA Input to output or any pin to case (except pin 7) at 500 V dc Tc = +25C No effect on dc performance, Tc = +25C 5 Overload Short circuit IOUT = 2500mA 1250mA to/from 2500mA
1 2,3 1,2,3 1,2,3 1 2,3 1,2,3 1,2,3
All All All All All All
Min 11.88 11.76
Max 12.12 12.24 2500 50 30 60 120 18 50
V mA
mVp-p
mV mV mA
Input ripple current Efficiency Isolation Capacitive load
3, 4
2
IRIP EFF ISO CL PD FS VOTLOAD
1,2,3 1 2,3 1 4 1 1,2,3 4,5,6 4,5,6
All All All All All 01 02 03 All 250 250 275 -800 78 75 100
20
mAp-p
% M 200 12 9.0 300 270 300 +800 F W KHz mVpk
Power dissipation load fault Switching frequency Output response to step transient load 6 changes
0mA to/from 1250mA
-1000
+1000
For Notes to Specifications, refer to page 5
4
www.irf.com
ATW28XXS Series
Table II. Electrical Performance Characteristics - continued
Test
Symbol Conditions -55C Tc +125C Vin = 28 Vdc 5%, CL = 0 unless otherwise specified Group A Subgroups Device Types
ATW2812S
Limits Unit
Min Recovery time step 6, 7 transient load changes TTLOAD 1250mA to/from 2500mA 4 5,6 4 5,6 4,5,6 All
Max 100 200 5.0 10 +1000 s
0mA to 1250mA Output response to Transient step Line changes Recovery time Transient step Line changes Turn on overshoot Turn on delay Load fault recovery
4, 9
All All -1000
ms mVpk s
VOTLINE
TTLINE
VTonOS TonD TrLF
Input step 18V to/ from 40V dc, 4, 8 IOUT = 2500mA Input step 18V to/ from 40V dc 4, 7, 8 IOUT = 2500mA IOUT = 0 and 2500mA 9 IOUT = 0 and 2500mA
4,5,6
All
500
4,5,6 4,5,6 4,5,6
All All All
600 12 12
mVpk ms ms
Notes to Specifications
1 2 3 4 5 6 7 8 9 Parameter guaranteed by line and load regulation tests. Bandwidth guaranteed by design. Tested for 20kHz to 2.0MHz. Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive load in excess of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry, appearing as a short circuit during turn-on. Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the limits specified in Table II. An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power dissipation. Load step transition time between 2.0s and 10s. Recovery time is measured from the initiation of the transient to where V OUT has returned to within 1.0% of VOUT at 50% load. Input step transition time between 2.0s and 10s. Turn-on delay time measurement is for either a step application of power at the input or the removal of ground signal from the inhibit pin (pin 2) while power is applied to the input.
www.irf.com
5
ATW28XXS Series
Specifications
Absolute Maximum Ratings
Input voltage Soldering temperature Operating case temperature Storage case temperature -0.5V to +50VDC 300C for 10 seconds -55C to +125C -65C to +135C
ATW2815S
Table III. Electrical Performance Characteristics
Test
Symbol Conditions -55C Tc +125C Vin = 28 Vdc 5%, CL = 0 Unless otherwise specified Group A Subgroups Device Types
Limits
Unit
Output voltage Output current 2 Output ripple voltage Output power Line regulation
1, 3 1
V OUT IOUT VRIP P OUT VRLINE VRLOAD IIN
IOUT = 0 VIN = 17, 28, and 40 V dc VIN = 17, 28, and 40 V dc, B.W. = dc to 2MHz VIN = 17,28, and 40 V dc VIN = 17, 28, and 40 V dc, Iout = 0, 677, and 1333mA VIN = 17, 28, and 40 V dc, IOUT = 0, 677, and 1333mA IOUT = 0, inhibit (pin 2) tied to input return (pin 10) IOUT = 0, inhibit (pin 2) = open IOUT = 1333mA B.W. = dc to 2MHz IOUT = 1333mA TC = +25C Input to output or any pin to case (except pin 8) at 500 V dc Tc = +25C No effect on dc performance, Tc = +25C 6 Overload, TC = +25C Short circuit, TC = +25C IOUT = 1333mA 50% load to/from 100% load No load to/from 50% load
1 2,3 1,2,3 1,2,3 1,2,3 1 2,3 1,2,3 1,2,3
All All All All All All All
Min 14.85 14.70 0
Max 15.15 15.30 1333 60
V mA mVp-p W mV mV mA
20 35 75 150 18 35
Load regulation Input current
Input ripple current Efficiency Isolation
2
IRIP E FF ISO
1,2,3 1 1
All All All 80 100
50
mAp-p % M
Capacitive load
4, 5
CL PD FS VOTLOAD
4 1
All All
200 6.0 6.0 275 245 275 +300 +450 +500 +750
F W
Power dissipation load fault Switching frequency
4,5,6
Output response to step 7 transient load changes
4 5,6 4 5,6
01 02 03 All
225 225 250 -300 -450 -500 -750
KHz
mVpk
For Notes to Specifications, refer to page 7
6
www.irf.com
ATW28XXS Series
Table III. Electrical Performance Characteristics - continued
Test
Symbol Conditions -55C Tc +125C Vin = 28 Vdc 5%, CL = 0 unless otherwise specified Group A Subgroups Device Types
ATW2815S
Limits Unit
Min Recovery time step transient load 7, 8 changes TTLOAD 50% load to/from 100% load 4 All
Max 70
s
Output response to transient step line 5, 9 changes Recovery time transient line 5, 8, 9 changes Turn on overshoot 10 Turn on delay Load fault recovery Weight
5
VOTLINE
No load to 50% load 50% load to no load Input step 17 to 40 Vdc Input step 40 to 17 Vdc Input step 17 tp 40 Vdc Input step 40 to 17 Vdc IOUT = 0 and 1333mA IOUT = 0 and 1333mA
5,6 4,5,6 4,5,6 4,5,6 4,5,6 4,5,6 4,5,6 4,5,6 4,5,6 4,5,6
All
100 1500 5.0 500 1500 800 800 600 10 10 75
ms mVpk
TTLINE
All
ms
VTonOS TonD TrLF
All All All
mVpk ms ms g
Flange
Notes to Specifications
Parameter guaranteed by line and load regulation tests. Bandwidth guaranteed by design. Tested for 20kHz to 2.0MHz. For operation at 16 Vdc input, derate output power by 33%. Capacitive load may be any value from 0 to the maximum limit without compromising dc performance. A capacitive load in excess of the maximum limit will not disturb loop stability but may interfere with the operation of the load fault detection circuitry, appearing as a short circuit during turn-on. 5 Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the limits specified in Table III. 6 An overload is that condition with a load in excess of the rated load but less than that necessary to trigger the short circuit protection and is the condition of maximum power dissipation. 7 Load step transition time between 2.0s and 10s. 8 Recovery time is measured from the initiation of the transient to where VOUT has returned to within 1.0% of V OUT at 50% load. 9 Input step transition time between 2.0s and 10s. 10 Turn-on delay time measurement is for either a step application of power at the input or the removal of ground signal from the inhibit pin (pin 2) while power is applied to the input. 1 2 3 4
www.irf.com
7
ATW28XXS Series
Block Diagram
+Input 1 Enable Input 2 Sync 8 Input Return 10
Drive 1
5 +Vout EMI Filter
Output 4 Return Pulse Width Modulator FB
Drive 2
Error Amp & Ref
6 +Sense 3 -Sense
Application Information
Inhibit Function (Enable)
Connecting the inhibit input (Pin 2) to input common (Pin 10) will cause the converter to shut down. It is recommended that the inhibit pin be driven by an open collector device capable of sinking at least 400A of current. The open circuit voltage of the inhibit input is 11.5 1.0VDC. To take advantage of this capability, the system designer must assign one of the converters as the master. Then, by definition, the remaining converters become slaves and will operate at the masters' switching frequency. The user should be aware that the synchronization system is fail-safe; that is, the slaves will continue operating should the master frequency be interrupted for any reason. The layout must be such that the synchronization output (pin 8) of the master device is connected to the synchronization input (pin 8) of each slave device. It is advisable to keep this run short to minimize the possibility of radiating the 250KHz switching frequency. The appropriate parts must be ordered to utilize this feature. After selecting the converters required for the system, a `MSTR' suffix is added for the master converter part number and a `SLV' suffix is added for slave part number. See Part Number section.
EMI Filter
An optional EMI filter (AFC461) will reduce the input ripple current to levels below the limits imposed by MIL-STD-461 CEO3.
Remote Sense (ATW2805S only)
Better than 0.1% line and load regulation (case temperature constant) are typical when the remote sense leads are used. If the remote sense leads are left unconnected, then the output voltage (measured at pins 4 and 5) will rise to approximately 5.4VDC. If the remote sense leads are shorted together, the output voltage may rise above 10VDC depending on load, possibly damaging both the converter and load.
Typical Synchronization Connection
+ In
Device Synchronization
Whenever multiple DC/DC converters are utilized in a single system, significant low frequency noise may be generated due to the sight differences in the switching frequencies of the converters (beat frequency noise). Because of the low frequency nature of this noise (typically less than 10KHz), it is difficult to filter out and may interfere with proper operation of sensitive systems (communications, radar or telemetry). International Rectifier offers an option, which provides synchronization of multiple AHE/ATW type converters, thus eliminating this type of noise.
Return
AFC461 or AFV461
Output
+ In Case
Output
ATW28XXS
Return MSTR
Return
Return
System Bus
ATW28xxD Output or Other Return Return Compatable Output
+ In Case SLV
+ In Case Return SLV
Output
ATW28xxD
Return Output
8
www.irf.com
ATW28XXS Series
Mechanical Outline
1.000 0.040 D X 0.26 L Pins 0.05
10
1 2
9
4 X 0.400 =1.600
1.95
2.360
2.700 Max
3
8
4
7
5
6
0.500 Max
1.350 Max
Pin Designation
Pin # 1 2 3 4 5 6 7 8 9 10 Designation + Input Enable Input - Remote Sense * Output Return + Output + Remote Sense * Case Ground NC ( or Sync. Option) NC Input Return
*
ATW2805S only. ATW2812S, ATW2815S have NC
Standard Microcircuit Drawing Equivalence Table
Standard Microcircuit Drawing Number
5962-91579 5962-92110 5962-91599
Vendor Cage Code 52467 52467 52467
IR Standard Part Number
ATW2805S ATW2812S ATW2815S
www.irf.com
9
ATW28XXS Series
Device Screening
Requirement
Temperature Range Element Evaluation Non-Destructive Bond Pull Internal Visual Temperature Cycle Constant Acceleration PIND Burn-In Final Electrical ( Group A ) PDA Seal, Fine and Gross Radiographic External Visual MIL-PRF-38534 2023 2017 1010 2001, Y1 Axis 2020 1015 MIL-PRF-38534 & Specification MIL-PRF-38534 1014 2012 2009 N/A Cond A N/A N/A Cond A, C N/A Yes
MIL-STD-883 Method
No Suffix
N/A N/A
ES
d
HB
CH
-55C to +125C Class H N/A Yes Cond C 3000 Gs N/A -55C, +25C, +125C 10% Cond A, C N/A Yes
-20C to +85C -55C to +125C N/A N/A Yes Cond B 500 Gs N/A
e -55C to +125C
N/A N/A Yes Cond C 3000 Gs N/A -55C, +25C, +125C N/A Cond A, C N/A Yes
c
N/A N/A N/A N/A 25C
48 hrs@hi temp 25C
d
160 hrs@125C 160 hrs@125C
c
Notes:
Best commercial practice Sample tests at low and high temperatures -55C to +105C for AHE, ATO, ATW
Part Numbering
ATW 28 15 S /CH - MSTR Model Input Voltage Nominal
28 = 28V
Sync Option
MSTR = Master SLV = Slave Omit for Standard
(Please refer to Screening Table)
Screening Level Output
S = Single
Output Voltage
05 = 5V 12 = 12V 15 = 15V
No Suffix, ES, HB, CH
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105 IR SANTA CLARA: 2270 Martin Av., Santa Clara, California 95050, Tel: (408) 727-0500 Visit us at www.irf.com for sales contact information. Data and specifications subject to change without notice. 12/2006
10
www.irf.com

▲Up To Search▲

Price & Availability of ATW28XXS

	To Download ATW28XXS Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .