Page 2Rev 1.0, Jun 10, 2020
Patent Protected: US 9,729,059 B1; US 10,193,442 B2
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Data and specifications subject to change without notice.
Introduction
This user guide describes the evaluation board provided for the FS1404 µPOL™ product.
The board generates an output voltage (VOUT) of 3.3V for loads of 0–4A from an input voltage (PVIN) of 12V.
Specifications
•Input voltage (PVIN) = +12V
•Output voltage (VOUT) = +3.3V
•Output load (IO) = 0–4A
•Switching frequency (FSW) = 1.4MHz
•Output capacitance (CO) = 2x22µF (MLCC)
•In put capacitance (CIN) = 2x22µF (MLCC)
•Dimensions (width x length x thickness) = 63 x 84 x 1.5mm
Connections
Name Identifier Description
Ground for output voltage
Internal supply (VCC) – output of an LDO regulator
Ground for internal supply
The board is configured for a single input supply. An internal low drop-out regulator generates the internal
supply (VCC) from PVIN. The Enable (En) input is connected to PVIN through a resistor divider, so that no Enable
signal is needed.
Operation
To use the evaluation board:
1. Connect a well-regulated +12V input supply to PVIN (J1) and Gnd (J2).
2. Connect a load of 0–4A to VOUT (J8) and Gnd (J7).
