AHF2805SSLASHCH datasheet(7/14 Pages) ETC1

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AHF2812D

TABLE V. Electrical performance characteristics - Continued.

Test

Symbol

Conditions

-55

°C ≤ T

≤ +125°C

VIN = 28 V dc ±5%, CL = 0 unless

otherwise specified

Group A

Subgroups

Device

types

Limits

Unit

Min

Max

Switching frequency

IOUT = 1000 mA

4,5,6

500

600

kHz

Output response to step

transient load changes 4/ 9/

VOTLOAD

500 mA to/from 1000 mA

4,5,6

-200

+200

mV pk

0 mA to/from 500 mA

4,5,6

-800

+800

Recovery time, step transient

load changes 4/ 9/ 10/

TTLOAD

500 mA to/from 1000 mA

4,5,6

µs

0 mA to/from 500 mA

4,5,6

1000

Output response transient step

line changes 4/ 7/ 11/

VOTLINE

Input step from/to 16 to 40 V dc,

IOUT = 1000 mA

4,5,6

-750

+750

mV pk

Recovery time transient step

line changes

4/ 7/ 10/ 11/

TTLINE

Input step from/to 16 to

40 V dc,

IOUT = 1000 mA

4,5,6

1200

µs

Turn on overshoot 4/

VTonOS

IOUT = 0 and 1000 mA

4,5,6

600

mV pk

Turn on delay

4 12/

TonD

IOUT = 0 and 1000 mA

4,5,6

Load fault recovery

TrLF

4,5,6

Weight

grams

Notes:

Parameter guaranteed by line load, and cross regulation tests.

Up to 90 percent of full power is available from either output provided the total output does not exceed 12 W.

Bandwidth guaranteed by design. Tested for 20 kHz to 2 MHz.

Load current split equally between +VOUT and -VOUT.

1.2 watt load on output under test, 1.2 watt to 10.8 watt load change on other output.

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 inTable V.

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 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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