Datasheet

UCD3138

www.ti.com

SLUSAP2F –MARCH 2012–REVISED NOVEMBER 2013

4.9 Triangular Mode ........................................................................................................... 38

4.10 Leading Edge Mode ....................................................................................................... 39

4.11 Sync FET Ramp and IDE Calculation .................................................................................. 41

4.12 Automatic Mode Switching ............................................................................................... 41

4.12.1 Phase Shifted Full Bridge Example .......................................................................... 41

4.12.2 LLC Example .................................................................................................... 42

4.12.3 Mechanism for Automatic Mode Switching .................................................................. 44

4.13 DPWMC, Edge Generation, IntraMux .................................................................................. 45

4.14 Filter ......................................................................................................................... 46

4.14.1 Loop Multiplexer ................................................................................................ 48

4.14.2 Fault Multiplexer ................................................................................................ 49

4.15 Communication Ports ..................................................................................................... 51

4.15.1 SCI (UART) Serial Communication Interface ............................................................... 51

4.15.2 PMBUS .......................................................................................................... 51

4.15.3 General Purpose ADC12 ...................................................................................... 52

4.15.4 Timers ............................................................................................................ 53

4.15.4.1 24-bit PWM Timer .................................................................................. 53

4.15.4.2 16-Bit PWM Timers ................................................................................ 54

4.15.4.3 Watchdog Timer .................................................................................... 54

4.16 Miscellaneous Analog ..................................................................................................... 54

4.17 Package ID Information ................................................................................................... 54

4.18 Brownout ................................................................................................................... 54

4.19 Global I/O ................................................................................................................... 55

4.20 Temperature Sensor Control ............................................................................................. 56

4.21 I/O Mux Control ............................................................................................................ 56

4.22 Current Sharing Control .................................................................................................. 56

4.23 Temperature Reference .................................................................................................. 57

5 IC Grounding and Layout Recommendations ........................................................................ 58

6 Tools and Documentation ................................................................................................... 59

7 References ....................................................................................................................... 61

Revision History ......................................................................................................................... 62