Analog Devices LTC3769IUFD | Demoboard DC2173A

Description

Demonstration circuit DC2173A is a DC/DC synchronous boost converter featuring the LTC®3769 constant frequency current mode synchronous boost controller. The DC2173A generates a 48V output voltage and provides 1.5A to 6A of output current.The 150kHz constant switching frequency operation resultsin a small and efficient circuit.This board operates over a wide 6V to 60V input voltage range, has a 28μA quiescent current during standby mode, and has a low power onboard bias supply along with adjustable current limit. The user can select Burst Mode® operation, pulse skipping, or continuous conduction mode at light loads via an onbourd jumper. This converter provides high output voltage accuracy (typically ±3%) over the entire load and temperature range.The DC2173A supports the following methods for biasing the LTC3769 onboard controller as follows:

1. Directly from the input voltage
2. With the onboard low power bias supply
3. From the output voltage after start-up
4. Connecting to an external voltage sourceThe onboard low power bias supply, based on LTC3630 high efficiency, 65V 500mA synchronous step-down converter provides a stable 10V bias voltage, which increases the overall efficiency at high input voltages.The DC2173A has a small circuit footprint and is a high performance, cost effective solution for telecom, automotive and Power over Ethernet applications.

Features

Remarks:L1=10uH,L2=220uHRefer page no.4

More information

• Datasheet
• IC product information