IP405: Digital Output Module, High Voltage Outputs

The IP405 controls up to 40 low-side switches (open-drain MOSFETs).

Operation of this module is very simple. Writing a “0” bit to a channel data register opens the switch to turn off a field device. Similarly, writing a “1” bit closes the switch to turn on the device. Each register can be read back to verify the value. Loopback monitoring of critical control signals is easily accomplished by reading back output states using Acromag’s IP400 Digital Input Module.

To ensure safe, reliable control under all conditions, the output operation is “fail-safe.” That is, outputs are always off on power-up and are automatically cleared following a system software reset.

Specifications

Digital Outputs

Output channel configuration: 40 open-drain DMOS MOSFETs with common source connection.
Voltage range: 0 to 60V DC, maximum.
Output ON current range: 0 to 1A DC, continuous (up to 10A total for all channels combined), 250mA DC, continuous (all channels on). No deration required at elevated ambients.
Turn on time: 320nS typical (varies with load).
Turn off time: 500nS typical (varies with load).

IP Compliance (ANSI/VITA 4)

Meets IP specifications per ANSI/VITA 4-1995.
IP data transfer cycle types supported: Input/output (IOSel*), ID read (IDSel*).
Access Times (8MHz clock): All functions: 0 wait states (250nS cycle), except Channel register write: 1 wait state (375nS cycle).
Updates: Requires two 16-bit and one 8-bit writes to update all channels.

Environmental

Operating temperature: 0 to 70°C (IP405) or -40 to 85°C (IP405E model).
Storage temperature: -55 to 125°C (all models).
Relative Humidity: 5 to 95% non-condensing
MTBF: 901,313 hrs at 25°C, MIL-HDBK-217F, Notice 2.
Power:
+5V (±5%): 350mA maximum.
+12V (±5%) from P1: 8.5mA maximum.
-12V (±5%) from P1: 0mA (not used).