AHF28XX Series
AHF2805S
Table I. Electrical Performance Characteristics - continued
Conditions
Limits
Unit
Test
Symbol
VOTLOAD
Group A
Subgroups
Device
Types
-55°C Tc +125°C
≤
≤
Vin = 28 Vdc ±5%, CL = 0
unless otherwise specified
Min
Max
Output response to
step transient load
changes6
1200 mA to/from 2400mA
0 mA to/from 1200mA
4,5,6
4,5,6
01
01
-300
-500
+300
+500
mV pk
mV pk
Recovery time step
transient load
changes6.7
TTLOAD
1200 mA to/from 2400mA
4,5,6
70
µs
0 mA to 1200 mA
500 mA to 0 mA
4,5,6
4,5,6
1200
8
ms
ms
Output response to
transient step line
changes
VOTLINE
Input step 16 V to/from
4,5,6
4,5,6
01
01
500
800
mV pk
µs
8
40 V dc, IOUT = 2400mA 4,
Recovery time
transient step line
changes
TTLINE
Input step 16 V to/from 40Vdc
I
OUT = 2400mA 4, 7, 8
Turn on overshoot
Turn on delay
VTonOS
TonD
IOUT = 0 and 2400mA
IOUT = 0 and 2400mA 9
4,5,6
4,5,6
01
01
600
20
mV pk
ms
Load fault
recovery4,9
TrLF
4,5,6
01
20
35
ms
Weight
grams
Notes to Specifications
1. Parameter guaranteed by line and load regulation tests.
2. Bandwidth guaranteed by design. Tested for 20 kHz to 2 MHz.
3. Capacitive load may be any value from 0 to the maximum limit without compromising dc performance.
A capacitive 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.
4. 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.
5. 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.
6. Load step transition time between 2 and 10 microseconds.
7. 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.
8. Input step transition time between 2 and 10 microseconds.
9. 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.
www.irf.com
3
INFINEON [ Infineon ]
