AHF28XX Series
AHF2815D
Table VI. Electrical Performance Characteristics - continued
Conditions
Test
Symbol
PD
Group A
Subgroups
Device
Types
Limits
Unit
W
-55°C Tc +125°C
Vin = 28 Vdc ±5%, CL = 0
Unless otherwise specified
≤
≤
Min
Max
Power dissipation
load fault
Overload 8
Short circuit
1,2,3
01
6
2
Switching
frequency4
FS
IOUT = 800 mA
4,5,6
01
500
600
kHz
Output response
to step transient
load changes4,9
VOTLOAD
400 mA to/from 800 mA
0 mA to/from 400 mA
4,5,6
4,5,6
01
01
-200
-800
+200
+800
mV pk
Recovery time
step transient load
changes4,9,10
TTLOAD
400 mA to/from 800 mA
0 mA to/from 400 mA
4,5,6
4,5,6
01
01
70
µs
500
Output response
transient step line
changes4,7,11
Input step from/to 16 to
40 V dc, IOUT=800mA
VOTLINE
4,5,6
4,5,6
01
01
-750
+750
1200
mV pk
µs
Recovery time
transient step line
changes4,7,10,11
Turn on
TTLINE
Input step from/to 16 to
40Vdc, IOUT =800mA
overshoot4
VTonOS
TonD
TrLF
IOUT=0 and 800mA
IOUT = 0 and 800mA
4,5,6
4,5,6
4,5,6
01
01
01
750
25
mV pk
ms
Turn on delay4,12
Load fault
recovery7
25
ms
Weight
38
grams
Notes to Specifications
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 12W.
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 in Table VI.
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.
www.irf.com
13
INFINEON [ Infineon ]
