Datasheet ADuM4138 (Analog Devices) - 3

Data Sheet ADuM4138 FUNCTIONAL BLOCK DIAGRAM VDD2 ADuM4138 FLYBACK 28 V DECODE CONTROLLER DD2 ENCODE LOGIC VDD2_REF 27 GND2 IDESAT UVLO2 25 DESAT SW 1 DESAT_ERROR FLYBACK UVLO1 CONTROLLER VUVLO2 Δt = tdDst II_SENSE LOGIC HYSTERESIS 9V I 2 SENSE DRIVE GND 3 FAULT 1 OC_DET VI_SENSE DECODE ENCODE 24 LOW_T_OP VOUT_ON VDD1 V V PGOOD DD1 V 4 HYSTERESIS MILLER_THRESH DD1 UVLO2 23 VOUT_OFF DRIVE INTERNAL 5V FAULT DRIVE V5_1 5 LDO ENCODE DECODE UVLO2 VDD2 REGULATOR UVLO1 TSD DESAT_ERROR INTERNAL VI+ 6 OC_ERROR 5V 26 V5_2 OT_ERROR LDO VL_ERROR REGULATOR FAULT V5 FAULT 22 OC_DET FAULT V I DRIVE OFF_SOFT NF VDD2 7 FAULT FAIL LATCH LOW_T_OP DECODE ENCODE = tDALM V2LEV DRIVE VL_ERROR Δt = t DVL 21 V5 MILLER_THRESH GATE_SENSE TEMP_OUT_PWM TEMP_OUT 8 DECODE ENCODE VVL VMILLER OC_DET 20 V5 MILLER_OUT DRIVE LOW_T_OP FAULT IPG IOC1 9 19 PGOOD OC1 OC_ERROR VLOW_TEMP Δt = tdOC I HYSTERESIS OC2 18 OC2 OT_ERROR V SCALING V DD1 OC = 2V Δt = t BLOCK dOT UVLO1 VOC_OFF GAIN1 Δt = tVDD1 V I UVLO1 T1 HYSTERESIS VOT 17 TS1 VT_OFFSET1 GAIN2 IT2 TEMP_OUT_PWM 16 MOSI TS2 10 MISO 11 SPI SAWTOOTH V 12 T_OFFSET2 CS TSD SCLK 13 INTERNAL TEMPERATURE SENSOR GAIN1 14 V GND1 HYSTERESIS EEPROM T_OFFSET1 15 GAIN2 GND2 VT_OFFSET2 NOTES 1. VL_ERROR IS THE VOLTAGE LOW ERROR INTERNAL CONNECTION. 2. TEMP_OUT_PWM IS THE TEMPERATURE SENSE INTERNAL CONNECTION. 3. OC_ERROR IS THE OVERCURRENT ERROR INTERNAL CONNECTION. 4. OC_DET IS THE OVERCURRENT DETECTION INTERNAL CONNECTION. 5. VDD2_REF IS THE REFERENCE VOLTAGE FOR VDD2. 6. DESAT_ERROR IS THE DESAT DETECTION ERROR INTERNAL CONNECTION. 7. MILLER_THRESH IS THE REFERENCE FOR THE MILLER THRESHOLD ACTIVATION. 8. OT_ERROR IS THE OVERTEMPERATURE ERROR INTERNAL CONNECTION. 9. VT_OFFSET1 IS THE TEMPERATURE SENSE OFFSET VOLTAGE FOR THE TS1 PIN. 10. VT_OFFSET2 IS THE TEMPERATURE SENSE OFFSET VOLTAGE FOR TS2 PIN. 11. IT1 IS THE INTERNAL CURRENT REFERENCE FOR TS1 PIN. 12. IT2 IS THE INTERNAL CURRENT REFERENCE FOR TS2 PIN. 13. VOC_OFF IS THE OVERCURRENT VOLTAGE OFFSET DUE TO TEMPERATURE RAMP. 14. VOC IS THE OVERCURRENT REFERENCE VOLTAGE. 15. MILLER_THRESH IS THE ACTIVE MILLER CLAMP INTERNAL CONTROL CONNECTION. 16. IOC1 IS THE OC1 INTERNAL PULL-UP CURRENT SOURCE. 17. IOC2 IS THE OC2 INTERNAL PULL-UP CURRENT SOURCE. 18. VPGOOD IS THE PGOOD VOLTAGE REFERENCE. 19. VUVLO1 IS THE VDD1 UVLO REFERENCE. 20. VLOW_TEMP IS THE LOW TEMPERATURE OPERATION REFERENCE.
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21. V2LEV IS THE TARGET VOLTAGE REFERENCE FOR TWO LEVEL OPERATION. 22. LOW_T_OP IS THE LOW TEMPERATURE OPERATION TRIGGER.
16036- Figure 1. Rev. 0 | Page 3 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ELECTRICAL CHARACTERISTICS SPI TIMING SPECIFICATIONS SPI Timing Diagram PACKAGE CHARACTERISTICS REGULATORY INFORMATION (PENDING) INSULATION AND SAFETY-RELATED SPECIFICATIONS DIN V VDE V 0884-10 (VDE V 0884-10):2016-12 INSULATION CHARACTERISTICS (PENDING) RECOMMENDED OPERATING CONDITIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION APPLICATIONS INFORMATION PCB LAYOUT ISOLATED FLYBACK CONTROLLER SPI AND EEPROM OPERATION SPI Programming USER REGISTER MAP USER REGISTER BITS OFFSET_2[5:0] Bits GAIN_2[5:0] Bits OFFSET_1[5:0] Bits GAIN_1[5:0] Bits CONFIGURATION REGISTER BITS OT_FAULT_OP Bit OT_FAULT_SEL Bit OC_TIME_OP Bit OC_2LEV_OP Bits LOW_T_OP Bit OC_BLANK_OP Bit tBLANK[3:0] Bits ECC_OFF_OP Bit FLYBACK_V[3:0] Bits T_RAMP_OP Bit PWM_OSC Bit CONTROL REGISTER BITS ECC2_DBL_ERR Bit ECC2_SNG_ERR Bit ECC1_DBL_ERR Bit ECC1_SNG_ERR Bit PROG_BUSY Bit SIM_TRIM Bit PROPAGATION DELAY RELATED PARAMETERS PROTECTION FEATURES Primary Side UVLO Fault Reporting Overcurrent Detection High Speed, Two-Level, Turn Off Miller Clamp Desaturation Detection Thermal Shutdown Isolated Temperature Sensor POWER DISSIPATION INSULATION LIFETIME DC CORRECTNESS AND MAGNETIC FIELD IMMUNITY TYPICAL APPLICATION CIRCUIT OUTLINE DIMENSIONS ORDERING GUIDE AUTOMOTIVE PRODUCTS