AHF2800 Datasheet, PDF (7/14 Pages) List of Unclassifed Manufacturers – Hybrid - High Reliability DC/DC Converters

TABLE V. Electrical performance characteristics - Continued.
AHF2812D
Test
Symbol
Conditions
Group A
Device
-55°C ≤ TC ≤ +125°C
Subgroups types
VIN = 28 V dc ±5%, CL = 0 unless
otherwise specified
Switching frequency 4/
FS
IOUT = 1000 mA
Output response to step
VOTLOAD 500 mA to/from 1000 mA
transient load changes 4/ 9/
0 mA to/from 500 mA
Recovery time, step transient TTLOAD
load changes 4/ 9/ 10/
500 mA to/from 1000 mA
0 mA to/from 500 mA
Output response transient step VOTLINE Input step from/to 16 to 40 V dc,
line changes 4/ 7/ 11/
IOUT = 1000 mA
Recovery time transient step
line changes 4/ 7/ 10/ 11/
TTLINE
Input step from/to 16 to
40 V dc,
IOUT = 1000 mA
Turn on overshoot 4/
Turn on delay 4 12/
Load fault recovery 7/
Weight
VTonOS
TonD
TrLF
IOUT = 0 and 1000 mA
IOUT = 0 and 1000 mA
4,5,6
01
4,5,6
01
4,5,6
01
4,5,6
01
4,5,6
01
4,5,6
01
4,5,6
01
4,5,6
01
4,5,6
01
4,5,6
01
Limits
Unit
Min
500
-200
Max
600 kHz
+200 mV pk
-800
+800
70 µs
1000
-750
+750 mV pk
1200 µs
600 mV pk
25 ms
25 ms
38 grams
Notes:
1/ Parameter guaranteed by line load, and cross regulation tests.
2/ Up to 90 percent of full power is available from either output provided the total output does not exceed 12 W.
3/ Bandwidth guaranteed by design. Tested for 20 kHz to 2 MHz.
4/ Load current split equally between +VOUT and -VOUT.
5/ 1.2 watt load on output under test, 1.2 watt to 10.8 watt load change on other output.
6/ 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.
7/ Parameter shall be tested as part of design characterization and after design or process changes. Thereafter, parameters shall be guaranteed to the
limits specified inTable V.
8/ 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.
9/ Load step transition time between 2 and 10 microseconds.
10/ Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1 percent of VOUT at 50 percent load.
11/ Input step transition time between 2 and 10 microseconds.
12/ Turn-on delay time measurement is for either a step application of power at the input or the removal of a ground signal from the inhibit pin (pin 1)
while power is applied to the input.
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