LINEAR 4-Phase Boost Converter Data Sheet Design Note 453
Summary
Discover high-efficiency power management with this multi-phase Boost Converter. Engineered for superior performance without bulky heat sinks, it delivers high power levels while drastically reducing ripple voltage and size constraints. The manual details the converter's architecture, showing how interleaving phases maintain peak efficiency (>96%) across diverse load conditions. Ideal for professional designers working in automotive, industrial, or telecommunication applications requiring reliable power solutions like audio amplification or fuel injection systems.
Page 1 Text Content
4-Phase Boost Converter Delivers 384W with no Heat Sink Design Note 453 Victor Khasiev Introduction need for bulky heat sinks and forced-air cooling. Inter-
High power boost converters are becoming increasingly leaving power stages (multiphase operation) improves popular among designers in the automotive, industrial effi ciency and reduces ripple voltage and currents in and telecom industries. When power levels of 300W or both the input and output capacitors, allowing the use more are required, high effi ciency (low power loss) is of smaller fi lter components. imperative in the power train components to avoid the , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. L1 19.4μH D1 PDS760
VIN 5V TO 18V
D2 PDS760
HAT2266H Q1
DMAX 3V8 10n F 6m
SLOPE RUN
LTC3862
BLANK VIN
PH/MODE INTVCC 1μF 48V
FREQ NC 4.7μF
SS PGND 4×120μF
ITH G1
10n F FB SENSE1+ HAT2266H
SGND SENSE1–
CLKOUT G2
SYNC SENSE2+ 10n F 6m
PLLFLTR SENSE2–
D3 PDS760
D4 PDS760
HAT2166H Q3
DMAX 3V8 10n F 6m
SLOPE RUN
LTC3862
BLANK VIN
PH/MODE INTVCC 1μF
FREQ NC 4.7μF
220p F SS PGND
ITH G1
FB SENSE1+ HAT2166H Q4
SGND SENSE1–
CLKOUT G2 L1 TO L4: PAPA2050-19310
SYNC SENSE2+ 10n F 6m
PLLFLTR SENSE2–
10k 10n F DN453 F01
Figure 1. A 4-Phase Boost Converter Based on the LTC3862 Produces 48V at 8A from a 5V to 18V Input
Page Summary Contents For LINEAR 4-Phase Boost Converter Data Sheet Design Note 453
Manual Details
| Brand | Linear |
|---|---|
| Pages | 2 |
| File Size | 93.74 KB |
| Published | June 15, 2026 |
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Frequently Asked Questions
What output power does this converter deliver?
It delivers 384W, producing 48V at 8A continuously from a 5V to 18V input.
What is the input voltage range of the LTC3862?
The LTC3862 has an input voltage range of 4V to 36V.
How is synchronization between the two controllers achieved?
Connect U1's CLKOUT pin to U2's SYNC pin and terminate U2's PLLFLTR pin with a lowpass filter.