The MAX256 evaluation kit (EV kit) is a fully assembled
and tested PCB that contains a 3W isolated H-bridge
DC-DC converter. The circuit is configured for unregulated
output voltages of approximately +5V and -5V
(with respect to an isolated ground). Output current is
up to 600mA from either output, or 300mA from each of
the two outputs. Input power for the circuit is provided
from a +5VDC source, or operates at any input voltage
down to +3V with a corresponding reduction in the output
voltages.
The EV kit provides greater than 85% overall efficiency
at +5V between 250mW and 2W output power using an
H-bridge DC-DC converter topology. Input ripple current
and radiated noise are minimized by the inherent
balanced nature of the design with no interruption in the
input current. Undervoltage lockout (UVLO) and thermal
shutdown provide for a robust 3W isolated supply.
The surface-mount transformer provides up to
1500VRMS galvanic isolation with each output powered
from a center-tapped full-wave rectifier circuit to reduce
output voltage ripple.
Operation at 400kHz allows the use of ceramic output
capacitors and a small transformer.
Key Features
Applications/Uses
+3V to +5VDC Input Range
Isolated Outputs
+VOUT: +5V Provides Up to 300mA
-VOUT: -5V Provides Up to 300mA
87% Overall Efficiency at +5V Input and 200mA
Load
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices:
1-2 of 2
MAX256EVKIT
Free Sample
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Status
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free? Materials Analysis
MAX256EVKIT
Active
Land Pattern: Not Available
See data sheet
MAX256EVKIT+
Active
Land Pattern: Not Available
See data sheet
Related Products
MAX256 3W Primary-Side Transformer H-Bridge Driver for Isolated Supplies
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