SBVS011N March   2000  – April 2020 DCP020503 , DCP020505 , DCP020507 , DCP020509 , DCP020515D , DCP021205 , DCP021212 , DCP021212D , DCP021515 , DCP022405 , DCP022405D , DCP022415D

PRODUCTION DATA  

  1. 1Features
  2. 2Applications
  3. 3Description
  4. 4Revision History
  5. 5Pin Configuration and Functions
    1.     Pin Functions
  6. 6Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Switching Characteristics
    7. 6.7 Typical Characteristics
  7. 7Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1  Isolation
        1. 7.3.1.1 Operation or Functional Isolation
        2. 7.3.1.2 Basic or Enhanced Isolation
        3. 7.3.1.3 Continuous Voltage
        4. 7.3.1.4 Isolation Voltage
        5. 7.3.1.5 Repeated High-Voltage Isolation Testing
      2. 7.3.2  Power Stage
      3. 7.3.3  Oscillator And Watchdog Circuit
      4. 7.3.4  Thermal Shutdown
      5. 7.3.5  Synchronization
      6. 7.3.6  Light Load Operation (< 10%)
      7. 7.3.7  Load Regulation (10% to 100%)
      8. 7.3.8  Construction
      9. 7.3.9  Thermal Management
      10. 7.3.10 Power-Up Characteristics
    4. 7.4 Device Functional Modes
      1. 7.4.1 Disable/Enable (SYNC pin)
      2. 7.4.2 Decoupling
        1. 7.4.2.1 Ripple Reduction
        2. 7.4.2.2 Connecting the DCP02 in Series
        3. 7.4.2.3 Connecting the DCP02 in Parallel
  8. 8Layout
    1. 8.1 Layout Guidelines
    2. 8.2 Layout Example
  9. 9Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Device Nomenclature
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Support Resources
    4. 9.4 Related Links
    5. 9.5 Trademarks
    6. 9.6 Receiving Notification of Documentation Updates
    7. 9.7 Electrostatic Discharge Caution
    8. 9.8 Glossary

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.3.5 Synchronization

In the event that more than one DC/DC converter is needed onboard, beat frequencies and other electrical interference can be generated. This interference occurs because of the small variations in switching frequencies between the DC/DC converters.

The DCP02 series of devices overcome this interference by allowing devices to be synchronized to one another. Up to eight devices can be synchronized by connecting the SYNC pins together, taking care to minimize the capacitance of tracking. Stray capacitance (greater than 3 pF) has the effect of reducing the switching frequency, or even stopping the oscillator circuit. The maximum recommended voltage applied to the SYNC pin is 3.0 V.

For an application that uses more than eight synchronized devices use an external device to drive the SYNC pins. The application report External Synchronization of the DCP01/02 Series of DC/DC Converters describes this configuration.

Note:

During the start-up period, all synchronized devices draw maximum current from the input simultaneously. If the input voltage falls below approximately 4 V, the devices may not start up. A 2.2-μF capacitor should be connected close to each device's input pin.