Products
Power Management
Semtech SC2642
Multi-Platform Two-Phase PWM Controller
The SC2642 provides microprocessor core voltage regulation solution with two paralleled PWM channels. Multi-phase buck regulator utilizes the phase-shift timing control to allow interleaved switching of the power switches. This architecture minimizes the core voltage ripple and the input current ripple, which leads to optimized voltage regulator design for power density, transient responses, and the thermal performances.
Overview
Features
- VRD/VRM 10.0, VRM 9.x, and K-8 compliant
- Core voltage set-point accuracy 0.5%
- Combi-Sense™ current-mode control
- Intrinsic phase current matching
- Fast transient response
- Active droop with temperature compensation to meet load line slope
- Support VID-on-fly with 5-bit or 6-bit VID
- Enable function for power sequencing
- Cycle-by-cycle peak current limit
- Intelligent over-current shut-down
- Over-voltage protection when using Semtech Combi-Sense™ driver SC1211
- Under-voltage protection built in
- Externally programmable soft start
- Externally programmable switching frequency (up to 1 MHz output ripple frequency)
- TSSOP-20 package
Applications
- Voltage regulator VRD 10.x
- Voltage regulator VRM 9.x
- Voltage regulator K-8
- High-current, low-voltage step-down DC/DC converters
Packaging
TSSOP-20
Order Codes
- SC2642TSTR: Package Minimum Tape & Reel Only
Diagrams and Specs
Block Diagram
Click diagram to enlarge