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IR3548 Datasheet(PDF) 3 Page - International Rectifier |
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IR3548 Datasheet(HTML) 3 Page - International Rectifier |
3 / 30 page IR3548 3 www.irf.com © 2014 International Rectifier Submit Datasheet Feedback January 08, 2014 FUNCTIONAL BLOCK DIAGRAM FUNCTION SW1 EN1 36 37 38 39 40 41 42 43 44 1 2 48 49 VIN1 VIN1 VIN1 VIN1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 SW1 13 BOOT2 7 BOOT1 Power-on Reset (POR), Reference, MODE (PWM or IR ATL), FUNCTION (Dual, Doubler, or Quad), and Driver Dead-time Control 4 LGND 9 VDRV 11 EN1 4 Driver Driver 3 VINDIV 17 MODE 14 PWM2 / PWMIO1 VDRV IR3548 VDRV 35 SW1 Q1 Q2 SW2 20 21 25 26 27 28 29 30 SW2 SW2 SW2 SW2 SW2 VIN2 VIN2 31 32 PGND PGND Driver Driver VDRV 19 VIN2 Q3 Q4 18 VIN2 33 SW2 SW2 SW2 46 24 GATEL2 GATEL2 22 12 VCC or VDRV UVLO or T > 150°C VCC 6 16 EN2 / PWMIO2 15 PWM1 5 VIN1 LGND PGND 50 VIN1 14 PGND 23 47 PGND 8 GATEL1 SW2 PGND 10 45 GATEL1 34 Figure 2: Block Diagram TABLE 1: FUNCTION AND MODE PIN CONFIGURATION TABLE PIN 16 “FUNCTION” PIN 17 “MODE” Functionality PWM Mode Pin 4 “EN1” Function Pin 14 Function Pin 15 Function 0 1 DUAL IR ATL Loop 1 PWM2 EN2 1 1 DOUBLER IR ATL Loops 1 & 2 NA NA Float 1 QUAD Master IR ATL Loops 1 & 2 PWMIO1 (output) PWMIO2 (output) 0 0 DUAL Tri-State Loop 1 PWM2 EN2 1 0 DOUBLER Tri-State Loops 1 & 2 NA NA Float 0 QUAD Slave NA Loops 1 & 2 PWMIO1 (input) PWMIO2 (input) |
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