Datasheet LTM4641 (Analog Devices) - 9

LTM4641
Typical perForMance characTerisTics (Figure 45 circuit with RfSET per Table 1 and RSET1A, RSET1B and RSET2 per Table 2, unless otherwise noted) Output Start-Up, Output Short-Circuit, Output Start-Up, 10A Load Pre-Bias Condition No Initial Load
V VOUT OUT VOUT 1V/DIV 1V/DIV 1V/DIV I I IN LOAD 1A/DIV 1mA/DIV IIN 200mA/DIV IIN RUN RUN 1A/DIV 5V/DIV 5V/DIV 800µs/DIV 4641 G10 800µs/DIV 4641 G11 20µs/DIV 4641 G12 VIN = 24V VIN = 24V VIN = 24V CIN(MLCC) = 2 × 10µF X7R CIN(MLCC) = 2 × 10µF X7R CIN(MLCC) = 2 × 10µF X7R
Output Short-Circuit, Start-Up with VINH Shorted to SW Start-Up with VINH Shorted to SW 10A Initial Load Node, 1VOUT(NOM) Node, 3.3VOUT(NOM)
VIN 20V/DIV V V OUT VINH IN 1V/DIV 2V/DIV 10V/DIV VINH V 5V/DIV OUT I 200mV/DIV IN VOUT 1A/DIV 1V/DIV CROWBAR CROWBAR 5V/DIV 5V/DIV 20µs/DIV 4641 G13 400µs/DIV 4641 G14 800µs/DIV 4641 G15 VIN = 24V FRONT PAGE CIRCUIT WITH VINH SHORT FIGURE 46 CIRCUIT WITH VINH SHORT CIN(MLCC) = 2 × 10µF X7R CIRCUITED TO SW PRIOR TO POWER-UP. CIRCUITED TO SW PRIOR TO POWER-UP. APPLYING UP TO 38VIN. NO LOAD APPLYING UP TO 38VIN. NO LOAD
Paralleled Modules, Current- Autonomous Restart with VINH Sharing Performance. cf. Control IC Bandgap and 1VREF Shorted to SW Node, 3.3VOUT(NOM) Figure 66 Circuit. 28VIN Voltages vs Temperature. 28VIN
VIN 10V/DIV 12 0.606 1.006 VINH 10V/DIV 10 0.604 1.004 8 1V 0.602 1.002 REF VOUT U1 IOUT VFB 1V/DIV VOLTAGE (V) 6 U2 I 0.600 1.000 CROWBAR OUT V1VREF(DC) 5V/DIV 4 100ms/DIV 4641 G16 0.598 0.998 2 BANDGAP VOLTAGE (V) FIGURE 46 CIRCUIT, SHORT CIRCUITING VINH TO SW IN SITU, OPERATING AT 38V V FB IN AND MODULE OUTPUT CURRENT (A) 0.596 0.996 NO LOAD. LATCH CONNECTED TO INTV 0 CC AND CTMR = 47nF –2 0.594 0.994 0 4 8 12 16 20 –75 –50 –25 0 25 50 75 100 125 150 TOTAL OUTPUT CURRENT (A) JUNCTION TEMPERATURE (°C) 4641 G17 4641 G18 4641fe For more information www.linear.com/LTM4641 9 Document Outline Features Applications Typical Application Description Table of Contents Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information—Power Supply Features Applications Information—Input Protection Features Applications Information—Load Protection Features Applications Information—EMI Performance Applications Information—Multimodule Parallel Operation Applications Information—Thermal Considerations and Output Current Derating Applications Information—Output Capacitance Table Applications Information—Safety and Layout Guidance Typical Applications Appendices Package Description Package Photo Package Description Revision History Typical Application Related Parts