Datasheet ADP1882, ADP1883 (Analog Devices) - 4

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ADP1882/ADP1883 Parameter Symbol Conditions Min Typ Max Unit
OUTPUT DRIVER CHARACTERISTICS High-Side Driver Output Source Resistance ISOURCE = 1.5 A, 100 ns, positive pulse (0 V to 5 V) 2 3.5 Ω Output Sink Resistance ISINK = 1.5 A, 100 ns, negative pulse (5 V to 0 V) 0.8 2 Ω Rise Time2 tR, DRVH BST − SW = 4.4 V, CIN = 4.3 nF (see Figure 60) 25 ns Fall Time2 tF, DRVH BST − SW = 4.4 V, CIN = 4.3 nF (see Figure 61) 11 ns Low-Side Driver Output Source Resistance ISOURCE = 1.5 A, 100 ns, positive pulse (0 V to 5 V) 1.7 3 Ω Output Sink Resistance ISINK = 1.5 A, 100 ns, negative pulse (5 V to 0 V) 0.75 2 Ω Rise Time2 tR, DRVL VDD = 5.0 V, CIN = 4.3 nF (see Figure 61) 18 ns Fall Time2 tF, DRVL VDD = 5.0 V, CIN = 4.3 nF (see Figure 60) 16 ns Propagation Delays DRVL Fall to DRVH Rise2 tTPDH, DRVH BST − SW = 4.4 V (see Figure 60) 22 ns DRVH Fall to DRVL Rise2 tTPDH, DRVL BST − SW = 4.4 V (see Figure 61) 24 ns SW Leakage Current ISW, LEAK BST = 25 V, SW = 20 V, VDD = 5.5 V 110 μA Integrated Rectifier Channel Impedance ISINK = 10 mA 22 Ω PRECISION ENABLE THRESHOLD Logic High Level VIN = 2.75 V to 20 V, VDD = 2.75 V to 5.5 V 235 285 330 mV Enable Hysteresis VIN = 2.75 V to 20 V, VDD = 2.75 V to 5.5 V 35 mV COMP VOLTAGE COMP Clamp Low Voltage VCOMP(LOW) From disable state, release COMP/EN pin to enable 0.47 V device; 2.75 V ≤ VDD ≤ 5.5 V COMP Clamp High Voltage VCOMP(HIGH) 2.75 V ≤ VDD ≤ 5.5 V 2.55 V COMP Zero Current Threshold VCOMP_ZCT 2.75 V ≤ VDD ≤ 5.5 V 0.95 V THERMAL SHUTDOWN TTMSD Thermal Shutdown Threshold Rising temperature 155 °C Thermal Shutdown Hysteresis 15 °C Hiccup Current Limit Timing 6 ms 1 The maximum specified values are with the closed loop measured at 10% to 90% time points (see Figure 60 and Figure , C 61) GATE = 4.3 nF, and the upper-side and lower-s de i MOSFETs specified as Infineon BSC042N030MSG. 2 Not automatic test equipment (ATE) tested. Rev. 0 | Page 4 of 40 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATIONS CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE BOUNDARY CONDITION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS ADP1882/ADP1883 BLOCK DIAGRAM THEORY OF OPERATION STARTUP SOFT START PRECISION ENABLE CIRCUITRY UNDERVOLTAGE LOCKOUT THERMAL SHUTDOWN PROGRAMMING RESISTOR (RES) DETECT CIRCUIT VALLEY CURRENT-LIMIT SETTING HICCUP MODE DURING SHORT CIRCUIT SYNCHRONOUS RECTIFIER POWER SAVING MODE (PSM) VERSION (ADP1883) TIMER OPERATION PSEUDO-FIXED FREQUENCY APPLICATIONS INFORMATION FEEDBACK RESISTOR DIVIDER INDUCTOR SELECTION OUTPUT RIPPLE VOLTAGE (ΔVRR) OUTPUT CAPACITOR SELECTION COMPENSATION NETWORK Output Filter Impedance (ZFILT) Error Amplifier Output Impedance (ZCOMP) Error Amplifier Gain (GM) Current-Sense Loop Gain (GCS) Crossover Frequency EFFICIENCY CONSIDERATIONS Channel Conduction Loss MOSFET Driver Loss Switching Loss Diode Conduction Loss Inductor Loss INPUT CAPACITOR SELECTION THERMAL CONSIDERATIONS DESIGN EXAMPLE Input Capacitor Inductor Current Limit Programming Output Capacitor Feedback Resistor Network Setup Compensation Network Loss Calculations EXTERNAL COMPONENT RECOMMENDATIONS LAYOUT CONSIDERATIONS IC SECTION (LEFT SIDE OF EVALUATION BOARD) POWER SECTION DIFFERENTIAL SENSING TYPICAL APPLICATIONS CIRCUITS DUAL-INPUT, 300 kHz HIGH CURRENT APPLICATIONS CIRCUIT SINGLE-INPUT, 600 kHz APPLICATIONS CIRCUIT DUAL-INPUT, 300 kHz HIGH CURRENT APPLICATIONS CIRCUIT OUTLINE DIMENSIONS ORDERING GUIDE