ZSPM1025C Datasheet, PDF (3/38 Pages) List of Unclassifed Manufacturers – True Digital PWM Controller (Single-Phase, Single-Rail)

ZSPM1025C / ZSPM1025D
Contents
Features................................................................................................................................................................... 1
Benefits .................................................................................................................................................................... 1
List of Figures .......................................................................................................................................................... 4
List of Tables ........................................................................................................................................................... 5
1 IC Characteristics ............................................................................................................................................. 6
1.1. Absolute Maximum Ratings....................................................................................................................... 6
1.2. Recommended Operating Conditions ....................................................................................................... 7
1.3. Electrical Parameters ................................................................................................................................ 7
2 Product Summary........................................................................................................................................... 10
2.1. Overview.................................................................................................................................................. 10
2.2. Pin Description......................................................................................................................................... 12
2.3. Available Packages ................................................................................................................................. 13
3 Functional Description .................................................................................................................................... 13
3.1. Power Supply Circuitry, Reference Decoupling, and Grounding ............................................................ 13
3.2. Reset/Start-up Behavior .......................................................................................................................... 14
3.3. Digital Power Control ............................................................................................................................... 14
3.3.1. Overview ........................................................................................................................................... 14
3.3.2. Output Voltage Feedback ................................................................................................................. 14
3.3.3. Digital Compensator ......................................................................................................................... 14
3.3.4. Power Sequencing and the CONTROL Pin ...................................................................................... 15
3.3.5. Pre-biased Start-up and Soft-Off ...................................................................................................... 17
3.3.6. Current Sensing ................................................................................................................................ 17
3.3.7. Temperature Measurement .............................................................................................................. 18
3.4. Fault Monitoring and Response Generation............................................................................................ 18
3.4.1. Output Over/Under Voltage .............................................................................................................. 18
3.4.2. Output Current Protection ................................................................................................................. 19
3.4.3. Over-Temperature Protection ........................................................................................................... 19
3.5. Monitoring and Debugging via I²C™ ....................................................................................................... 19
4 Application Information................................................................................................................................... 20
4.1. Typical Application Circuit ....................................................................................................................... 20
4.2. Pin Strap Options of the ZSPM1025C/D ................................................................................................. 23
4.2.1. CONFIG0 – Output Voltage .............................................................................................................. 23
4.2.2. CONFIG1 – Compensation Loop and Output Voltage Slew Rate .................................................... 24
4.3. Typical Performance Measurements for the ZSPM1025C and ZSPM1025D ......................................... 27
4.3.1. Typical Load Transient Response – ZSPM1025C – Capacitor Range #1 – Comp0........................ 28
4.3.2. Typical Load Transient Response – ZSPM1025C – Capacitor Range #2 – Comp1........................ 29
4.3.3. Typical Load Transient Response – ZSPM1025C – Capacitor Range #3 – Comp2........................ 30
4.3.4. Typical Load Transient Response – ZSPM1025C – Capacitor Range #4 – Comp3........................ 31
© 2016 Integrated Device Technology, Inc.
3
January 22, 2016