Document
PD - 94457B
AFL50XXS SERIES
50V Input, Single Output
HYBRID-HIGH RELIABILITY DC/DC CONVERTER
Description
The AFL Series of DC/DC converters feature high power density with no derating over the full military temperature range. This series is offered as part of a complete family of converters providing single and dual output voltages and operating from nominal +28V, +50V, +120V or +270V inputs with output power ranging from 80W to 120W. For applications requiring higher output power, individual converters can be operated in parallel. The internal current sharing circuits assure equal current distribution among the paralleled converters. This series incorporates International Rectifier’s proprietary magnetic pulse feedback technology providing optimum dynamic line and load regulation response. This feedback system samples the output voltage at the pulse width modulator fixed clock frequency, nominally 550KHz. Multiple converters can be synchronized to a system clock in the 500KHz to 700 KHz range or to the synchronization output of one converter. Undervoltage lockout, primary and secondary referenced inhibit, soft-start and load fault protection are provided on all models. These converters are hermetically packaged in two enclosure variations, utilizing copper core pins to minimize resistive DC losses. Three lead styles are available, each fabricated with International Rectifier’s rugged ceramic lead-to-package seal assuring long term hermeticity in the most harsh 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.
AFL Features
n n n n n n n n n n n n n n n n n 30V To 80V Input Range 5V, 8V, 9V, 12V, 15V and 28V Outputs Available High Power Density - up to 84 W/in3 Up To 120W Output Power Parallel Operation with Stress and Current Sharing Low Profile (0.380") Seam Welded Package Ceramic Feedthru Copper Core Pins High Efficiency - to 85% Full Military Temperature Range Continuous Short Circuit and Overload Protection Remote Sensing Terminals Primary and Secondary Referenced Inhibit Functions Line Rejection > 40dB - DC to 50KHz External Synchronization Port Fault Tolerant Design Dual Output Versions Available Standard Microcircuit Drawings Available
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12/15/06
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AFL50XXS Series
Specifications
Absolute Maximum Ratings
Input voltage Soldering temperature Operating case temperature Storage case temperature -0.5V to +100VDC 300°C for 10 seconds -55°C to +125°C -65°C to +135°C
Static Characteristics -55°C < TCASE < +125°C, 30V< VIN < 80V unless otherwise specified.
Parameter INPUT VOLTAGE OUTPUT VOLTAGE AFL5005S AFL5008S AFL5009S AFL5012S AFL5015S AFL5028S AFL5005S AFL5008S AFL5009S AFL5012S AFL5015S AFL5028S OUTPUT CURRENT AFL5005S AFL5008S AFL5009S AFL5012S AFL5015S AFL5028S OUTPUT POWER AFL5005S AFL5008S AFL5009S AFL5012S AFL5015S AFL5028S MAXIMUM CAPACITIVE LOAD OUTPUT VOLTAGE TEMPERATURE COEFFICIENT OUTPUT VOLTAGE REGULATION AFL5028S Line All Others Line Load OUTPUT RIPPLE VOLTAGE AFL5005S AFL5008S AFL5009S AFL5012S AFL5015S AFL5028S 1, 2, 3 1, 2, 3 1, 2, 3 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3 3 3 3 3 3 V IN = 30, 50, 80 Volts, 100% Load, BW = 10MHz Note 1 V IN = 50 Volts, 100% Load - Note 1, 6 10,000 -0.015 +0.015 1 1 1 1 1 1 2, 2, 2, 2, 2, 2, 3 3 3 3 3 3 V IN = 30, 50, 80 Volts - Note 6 Group A Subgroups Note 6 V IN = 50 Volts, 100% Load 4.95 7.92 8.91 11.88 14.85 27.72 4.90 7.84 8.82 11.76 14.70 27.44 5.00 8.00 9.00 12.00 15.00 28.00 5.05 8.08 9.09 12.12 15.15 28.28 5.10 8.16 9.18 12.24 15.30 28.56 16.0 10.0 10.0 9.0 8.0 4.0 80 80 90 108 120 112 Test Conditions Min 30 Nom 50 Max 80 Unit V
V
A
Note 6
W
µF %/°C
No Load, 50% Load, 100% Load V IN = 30, 50, 80 Volts
-70.0 -20.0 -1.0
+70.0 +20.0 +1.0 30 40 40 45 50 100
mV mV %
mV pp
For Notes to Specifications, refer to page 4
2
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AFL50XXS Series
Static Characteristics (Continued)
Parameter INPUT CURRENT No Load Inhibit 1 Inhibit 2 INPUT RIPPLE CURRENT AFL5005S AFL5008S AFL5009S AFL5012S AFL5015S AFL5028S CURRENT LIMIT POINT As a percentage of full rated load 1 2, 3 1, 2, 3 1, 2, 3 1, 1, 1, 1, 1, 1, 2, 3 2, 3 2, 3 2, 3 2, 3 2, 3 Group A Subgroups Test Conditions VIN = 50 Volts IOUT = 0 Pin 4 Shorted to Pin 2 Pin 12 Shorted to Pin 8 VIN = 50 Volts, 100% Load, BW = 10MHz Min Nom Max 50 60 5.0 5.0 60 60 60 60 60 60 Unit
mA
mApp
1 2 3 1, 2, 3 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3 3 3 3 3 3
VOUT = 90% VNOM , VIN = 50 Volts Note 5
115 105 125
125 115 140 32
%
LOAD FAULT POWER DISSIPATION Overload or Short Circuit EFFICIENCY AFL5005S AFL5008S AFL5009S AFL5012S AFL5015S AFL5028S
VIN = 50 Volts VIN = 50 Volts, 100% Load
W
78 79 80 81 82 82 -0.5 2.0 500 500 2.0 -0.5
81 82 83 8.