Datasheet ADP1032 (Analog Devices) - 3

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Data Sheet ADP1032 SPECIFICATIONS
VINP voltage (VINP) = 24 V, MVDD voltage (VMVDD) = 3.3 V, SVDDx voltage (VSVDDx) = 3.3 V, VOUT1 voltage (VOUT1) = 24 V, VOUT2 voltage (VOUT2) = 3.3 V, and ambient temperature (TA) = 25°C for typical specifications. Minimum and maximum specifications apply over the entire operating range of 4.5 V ≤ VINP ≤ 60 V, 2.3 V ≤ VMVDD ≤ 5.5 V, 1.8 V ≤ VSVDDx ≤ 5.5 V, and −40°C ≤ TJ ≤ +125°C, unless otherwise noted.
Table 2. Parameter Symbol Min Typ Max Unit Test Conditions/Comments
INPUT SUPPLY VOLTAGE RANGE VINP VINP 4.5 60 V MVDD VMVDD 2.3 5.5 V SVDDx VSVDDx 1.8 5.5 V Applies to SVDD1 and SVDD2 OUTPUT POWER AND EFFICIENCY Transformer = Coilcraft ZA9644-AE Total Output Power 2.5 W VOUT1 current (IOUT1) = 100 mA VOUT2 current (IOUT2) = 30 mA 623 mW IOUT1 = 25 mA, IOUT2 = 7 mA Efficiency 86.5 % IOUT1 = 100 mA, IOUT2 = 30 mA 84.5 % IOUT1 = 25 mA, IOUT2 = 7 mA Power Dissipation 390 mW IOUT1 = 100 mA, IOUT2 = 30 mA 114 mW IOUT1 = 25 mA, IOUT2 = 7 mA QUIESCENT CURRENT VINP Operating Current IQ_VINP 1.9 mA Normal operation, VOUT1, VOUT2 = no load Shutdown Current ISHDN_VINP 125 175 µA EN voltage (VEN) = 0 V MVDD SPI Active Mode I 1 Q_MVDD (SPI_ACTIVE) 4.1 6.5 mA VIx = logic low, MSS = logic low 9.2 14 mA V 1 Ix = logic high, MSS = logic low SPI Low Power Mode I 1 Q_MVDD (SPI_LOWPWR) 1.6 2.5 mA VIx = logic low, MSS = logic high 1.6 2.5 mA V 1 Ix = logic high, MSS = logic high SVDD1 SPI Active Mode I 1 Q_SVDD1 (SPI_ACTIVE) 1.8 2.7 mA VIx = logic low, SSS = logic low 5.7 8.6 mA V 1 Ix = logic high, SSS = logic low SPI Low Power Mode I 1 Q_SVDD1 (SPI_LOWPWR) 1.8 2.7 mA VIx = logic low, SSS = logic high 1.8 2.7 mA V 1 Ix = logic high, SSS = logic high SVDD2 I 1 Q_SVDD2 15.5 22 µA VIx = logic low 2 2.5 mA V 1 Ix = logic high Undervoltage Lockout (UVLO) VINP Relative to PGNDP Rising Threshold VUVLO_VINP (RISE) 4.44 4.49 V Falling Threshold VUVLO_VINP (FALL) 4.29 4.34 V Hysteresis 100 mV MVDD Relative to MGND Rising Threshold VUVLO_MVDD (RISE) 2.14 2.28 V Falling Threshold VUVLO_MVDD (FALL) 1.9 2 V Hysteresis 140 mV THERMAL SHUTDOWN Threshold TSHDN 150 °C Hysteresis THYS 15 °C PRECISION ENABLE Rising Input Threshold VEN_RISING 1.10 1.135 1.20 V Input Hysteresis VEN_HYST 100 mV Leakage Current 0.03 0.5 µA VEN = VINP Rev. 0 | Page 3 of 37 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT COMPANION PRODUCTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS REGULATORY INFORMATION ELECTROMAGNECTIC COMPATIBILITY INSULATION AND SAFETY RELATED SPECIFICATIONS DIN V VDE 0884-10 (VDE V 0884-10) INSULATION CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION FLYBACK REGULATOR Flyback Regulator Operation Power Saving Mode (PSM) Flyback Undervoltage Lockout (UVLO) Flyback Regulator Precision Enable Control Flyback Regulator Soft Start Flyback Slew Rate Control Flyback Regulator Overcurrent Protection Flyback Regulator Overvoltage Protection BUCK REGULATOR Buck Regulator Operation Buck Regulator UVLO Buck Regulator Soft Start Buck Regulator Current-Limit Protection Buck Regulator Active Pull-Down Resistor Buck Regulator OVP POWER GOOD POWER-UP SEQUENCE OSCILLATOR AND SYNCHRONIZATION THERMAL SHUTDOWN DATA ISOLATION High Speed SPI Channels GPIO Data Channels APPLICATIONS INFORMATION COMPONENT SELECTION Feedback Resistors Capacitor Selection FLYBACK REGULATOR COMPONENTS SELECTION Input Capacitor Output Capacitor Ripple Current vs. Capacitor Value Schottky Diode Transformer Turn Ratio Primary Inductance Flyback Transformer Saturation Current Series Winding Resistance Leakage Inductance and Clamping Circuits Clamping Resistor Clamping Capacitor Clamping Diode Diode, Zener Diode Clamp Ripple Current (IAC) vs. Inductance Maximum Output Current Calculation BUCK REGULATOR COMPONENTS SELECTION Inductor Output Capacitor INSULATION LIFETIME Surface Tracking Insulation Wear Out Calculation and Use of Parameters Example THERMAL ANALYSIS TYPICAL APPLICATION CIRCUIT PCB LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE