用于隔离式电源的高集成数字控制器 datasheet (Rev. C)

1 UCD3138.. Data Manual PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Literature Number: ZHCS429C. March 2012 Revised March 2013. UCD3138. ZHCS429C MARCH 2012 REVISED MARCH 2013.. 1 .. 6.. 6.. 7. 2 .. 7.. 7.. 8.. 8.. 9. UCD3138 64 QFN .. 10.. 11. UCD3138 40 QFN .. 13.. 14. 3 Electrical Specifications .. 15. ABSOLUTE MAXIMUM RATINGS .. 15. THERMAL INFORMATION .. 15. RECOMMENDED OPERATING CONDITIONS .. 15. ELECTRICAL CHARACTERISTICS .. 16. PMBus/SMBus/I2C Timing.

2 19. Power On Reset (POR) / Brown Out Reset (BOR) .. 20. Typical Clock Gating Power Savings .. 21. Typical Temperature Characteristics .. 22. 4 Functional Overview .. 23. ARM Processor .. 23. Memory .. 23. CPU Memory Map and Interrupts .. 23. Memory Map (After Reset Operation) .. 23. Memory Map (Normal Operation) .. 24. Memory Map (System and Peripherals Blocks) .. 24. Boot ROM .. 24. Customer Boot Program .. 25. Flash Management .. 25. System Module .. 25. Address Decoder (DEC) .. 25. Memory Management Controller (MMC) .. 25. System Management (SYS) .. 25. Central Interrupt Module (CIM) .. 26. Peripherals .. 27. Digital Power Peripherals.

3 27. Front End .. 27. DPWM Module .. 28. DPWM Events .. 29. High Resolution DPWM .. 31. Over Sampling .. 31. DPWM Interrupt Generation .. 31. DPWM Interrupt Scaling/Range .. 31. DPWM Modes of Operation .. 32. Normal Mode .. 32. Phase Shifting .. 34. DPWM Multiple Output Mode .. 35. DPWM Resonant Mode .. 36. Triangular Mode .. 38. 2 2012 2013, Texas Instruments Incorporated UCD3138. ZHCS429C MARCH 2012 REVISED MARCH 2013. Leading Edge Mode .. 39. Sync FET Ramp and IDE Calculation .. 41. Automatic Mode Switching .. 41. Phase Shifted Full Bridge Example .. 41. LLC Example .. 42. Mechanism for Automatic Mode Switching .. 44. DPWMC, Edge Generation, IntraMux.

4 45. Filter .. 46. Loop Multiplexer .. 48. Fault Multiplexer .. 49. Communication Ports .. 51. SCI (UART) Serial Communication Interface .. 51. PMBUS .. 51. General Purpose ADC12 .. 52. Timers .. 53. 24-bit PWM Timer .. 53. 16-Bit PWM Timers .. 54. Watchdog Timer .. 54. Miscellaneous Analog .. 54. Package ID Information .. 54. Brownout .. 54. Global I/O .. 55. Temperature Sensor Control .. 56. I/O Mux Control .. 56. Current Sharing Control .. 56. Temperature Reference .. 57. 5 IC Grounding and Layout Recommendations .. 58. 6 Tools and Documentation .. 59. 7 References .. 61. Revision History .. 62. 2012 2013, Texas Instruments Incorporated 3.

5 UCD3138. ZHCS429C MARCH 2012 REVISED MARCH 2013 . 3-1 I2C/SMBus/PMBus Timing Diagram .. 20. 3-2 Bus Timing in Extended 20. 3-3 Power On Reset (POR) / Brown Out Reset (BOR) .. 20. 3-4 EADC LSB Size with 4X Gain (mV) vs. Temperature .. 22. 3-5 ADC12 Measurement Temperature Sensor Voltage vs. Temperature .. 22. 3-6 ADC12 Reference vs. Temperature .. 22. 3-7 ADC12 Temperature Sensor Measurement Error vs. Temperature .. 22. 3-8 UCD3138 Oscillator Frequency (2 MHz Reference, Divided Down from 250 MHz) vs. Temperature .. 22. 4-1 Input Stage of EADC Module .. 28. 4-2 Front End Module (Front End 2 Recommended for Peak Current Mode Control).

6 28. 4-3 Secondary-Referenced Phase-Shifted Full Bridge Control With Synchronous Rectification .. 42. 4-4 Secondary-Referenced Half-Bridge Resonant LLC Control With Synchronous Rectification .. 43. 4-5 Fault Mux Block Diagram .. 51. 4-6 PMBus Address Detection Method .. 52. 4-7 ADC12 Control Block Diagram .. 53. 4-8 Internal Temp Sensor .. 56. 4-9 Simplified Current Sharing Circuitry .. 57. 4 2012 2013, Texas Instruments Incorporated UCD3138. ZHCS429C MARCH 2012 REVISED MARCH 2013.. 2-1 .. 11. 2-2 .. 14. 3-1 I C/SMBus/PMBus Timing Characteristics .. 2. 19. 4-1 Interrupt Priority Table .. 26. 4-2 DPWM Interrupt Divide Ratio.

7 31. 2012 2013, Texas Instruments Incorporated 5. UCD3138. ZHCS429C MARCH 2012 REVISED MARCH 2013 . : UCD3138. 1 . 1.. 3 / . PID (IC) . 2 / 2 / .. 16 MHz (EADC) . 1mV/LSB .. 8 . 8x . 14 (DAC) . / . 8 (DPWM) . 250ps 7 . 4ns . 4ns .. 10 .. 2 MHz UCD3138 DPWM . PWM 14 12 267kbps . (ADC) .. 32 ARM7 TDMI- . S .. 32k (kB) .. (ECC) 2kB .. 4kB RAM.. 4kB ROM I2C UART . - .. I2C / (PMBus). UCD3138 RGC 40 . (QFN) 2 UART. PWM UCD3138 RHA 40 QFN . 1 . PWM UART.. 5 . BOD POR. 64 QFN 40 QFN . -40 C 125 C. (GUI). 1. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

8 2012 2013, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production English Data Sheet: SLUSAP2 processing does not necessarily include testing of all parameters. UCD3138. ZHCS429C MARCH 2012 REVISED MARCH 2013.. dc-dc . 2 .. UCD3138 (TI) . UCD3138 . ac/dc dc/dc IT . UCD3138 . TI . Code Composer Studio TI GUI .. UCD3138 (DPP) DPP . (EADC) 2 - 2 PID . 250ps DPWM 12 267ksps ADC ADC . 14 (PMBus) (UART) . ARM7 TDMI-S ARM . RAM ROM . FDPP .. LLC .. (PFC) PFC LLC .. 2012 2013, Texas Instruments Incorporated 7.

9 UCD3138. ZHCS429C MARCH 2012 REVISED MARCH 2013 .. TA. UCD3138 RGCT 64 QFN 250 UCD3138 40 C 125 C. UCD3138 RGCR 64 QFN 2000 UCD3138 40 C 125 C. UCD3138 RHAT 40 QFN 250 UCD3138 40 C 125 C. UCD3138 RHAR 40 QFN 2500 UCD3138 40 C 125 C.. UCD3138 64 UCD3138 40 . ARM7 TDMI-S (DPWM) 250ps 8 8. # 3 3. 12 267ksps ADC 14 7. ADC 4 4. 32KB 32KB. 2KB 2KB.. RAM 4KB 4KB. DPWM 2 MHz 2 MHz 4 1 + 2 (1). (2). 7 6 (2). UART (SCI) 2 1 (1). (PMBus) . 4 16 1 24 4 16 1 24 . PWM 2 1. 1 1 (1).. 64 QFN (9mm x 40 QFN (6mm x . 9mm) 6mm).. GPIO DPWM SCI 30 18. 1 0. (1) UCD3138 . (2) (OVP) (UVP) B C AD03 . 8 2012 2013, Texas Instruments Incorporated UCD3138.

10 ZHCS429C MARCH 2012 REVISED MARCH 2013.. Loop MUX. EAP0 DPWM0A. PID Based Front End 0 DPWM0. Filter 0. EAN0 DPWM0B. EAP1 DPWM1A. PID Based Front End 1 DPWM1. EAN1 Filter 1 DPWM1B. PID Based DPWM2A. Front End 2 DPWM2. Filter 2. AFE DPWM2B. Constant Power Constant DPWM3A. Current DPWM3. 3-AFE. EAP2. 2 DPWM3B. AFE EADC Front End Averaging 2 X Avg() SYNC. EAN2. Digital Comparators SAR/Prebias DAC0. A0 Ramp Input Voltage Feed Forward Filter x CPCC. Value Dither Abs(). Peak Current Mode Control Comparator Advanced Power Control Mode Switching, Burst Mode, IDE, Synchronous Rectification soft on & off ADC_EXT_TRIG ADC12 Control PMBUS_ALERT.