i7A Series
https://product.tdk.com/en/power/i7a
www.emea.lambda.tdk.com/i7a
400-750W, 9 to 18V, 18 to 32V or 18 to 60V Input
Non-Isolated Step Down DC-DC Converter
The i7A series of up to 750W non-isolated DC-DC step-down converters are ideal for creating additional high current/high power 33A, 45A and 60A output voltage
rails from a single output 12V, 24V, 36V or 48V AC-DC or DC-DC power supply. The highly efficient i7A series has low ripple, excellent dynamic response under
sudden load changes, accepts a wide DC input with a wide output adjustment range and optional current limit (OCP) adjust. Three mechanical configurations are
available; low profile open frame, baseplate construction for conduction cooling, or models with an integral heat sink for convection or forced air cooling. The i7A
series expands upon TDK-Lambda’s existing 100 to 250W rated i3A / i6A series and reduces the need to parallel modules.
Features
Benefits
• Up to 750W in a 1/16th Brick Footprint
• High Power Density, Less Board Area Needed
• Longer Battery Life / Less Power Consumed
• One Part Supports Multiple System Voltages
• Can Operate From Different DC Source Voltages Including Batteries
• Low Cost
• High Efficiency - Up to 98.5%
• Wide 0.8 to 8V or 3.3 up to 24V Output Adjustment
• 9 to 18V, 18 to 32V or 18 to 60V Input Ranges
• Low Component Count With Minimal External Components
• Minimal Derating Requirements in Low Airflow Environments
• Easy To Cool In End System
Model Selector
Input
Voltage
(V)
Output
Voltage
(V)
Max O/P
Current
(A)
Max O/P
Power
(W)
Remote
On/Off
Logic
Adjustable
(OCP)
Current Limit
Integrated
Heatsink
Integrated
Baseplate
Model
i7A4W033A033V-000-R
i7A4W033A033V-001-R
i7A4W033A033V-003-R
i7A4W033A033V-0C1-R
i7A4W033A033V-0C3-R
i7A4W033A033V-0F1-R
i7A4W033A033V-0F3-R
i7A24045A033V-000-R
i7A24045A033V-001-R
i7A24045A033V-003-R
i7A24045A033V-0C1-R
i7A24045A033V-0C3-R
i7A24045A033V-0F1-R
i7A24045A033V-0F3-R
i7A12060A008V-000-R
i7A12060A008V-001-R
i7A12060A008V-003-R
i7A12060A008V-0C1-R
i7A12060A008V-0C3-R
i7A12060A008V-0F1-R
i7A12060A008V-0F3-R
18 - 60
18 - 60
18 - 60
18 - 60
18 - 60
18 - 60
18 - 60
18 - 32
18 - 32
18 - 32
18 - 32
18 - 32
18 - 32
18 - 32
9 - 18
3.3 - 24
3.3 - 24
3.3 - 24
3.3 - 24
3.3 - 24
3.3 - 24
3.3 - 24
3.3 - 18
3.3 - 18
3.3 - 18
3.3 - 18
3.3 - 18
3.3 - 18
3.3 - 18
0.8 - 8
33
33
33
33
33
33
33
45
45
45
45
45
45
45
60
60
60
60
60
60
60
500
500
500
500
500
500
500
750
750
750
750
750
750
750
400
400
400
400
400
400
400
Positive
Negative
Negative
Negative
Negative
Negative
Negative
Positive
Negative
Negative
Negative
Negative
Negative
Negative
Positive
-
-
-
-
-
-
-
-
-
Yes
-
Yes
-
Yes
-
-
Yes
-
Yes
-
Yes
-
-
Yes
-
Yes
-
Yes
Yes
-
-
-
-
-
Yes
Yes
-
-
-
-
-
Yes
Yes
-
-
-
-
-
Yes
Yes
-
-
-
-
-
9 - 18
9 - 18
9 - 18
9 - 18
9 - 18
9 - 18
0.8 - 8
0.8 - 8
0.8 - 8
0.8 - 8
0.8 - 8
0.8 - 8
Negative
Negative
Negative
Negative
Negative
Negative
-
Yes
Yes
-
Yes
Yes
Yes
-
Preferred Model
1
i7A Series