FAN7093_F085 High Current PN Half Bridge December 2011 FAN7093_F085 High Current PN Half Bridge Rectifier 47 A, Max path resistance 30.5 mΩ at 150 °C ©2011 Fairchild Semiconductor Corporation FAN7093_F085 Rev. C1 1 www.fairchildsemi.
FAN7093_F085 High Current PN Half Bridge December 2011 1 Features • Path resistance of max. 30.5 mΩ at 150 °C • Low quiescent current of max.
FAN7093_F085 High Current PN Half Bridge December 2011 3 Block Diagram The FAN7093_F085 is a high current half-bridge and contains three separate chips in one package: One P-channel high-side MOSFET and one N-channel low-side MOSFET together with a control IC. All three chips are mounted on one common lead frame, using chip on chip and chip by chip technology. The power FETs are vertical MOS transistors to ensure minimum on state resistance.
FAN7093_F085 High Current PN Half Bridge December 2011 4 Pin configuration 4.1 Pin assignment S P B Figure 2 Pin assignment for FAN7093_F085B, FAN7093_F085P and FAN7093_F085S 4.
FAN7093_F085 High Current PN Half Bridge December 2011 5 General Product Characteristics 5.1 Absolute Maximum Ratings Absolute Maximum Ratings 1) Tj = -40 °C to +150 °C; all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. Parameter Symbol Min. 5.1.1 Supply Voltage 5.1.2 5.1.3 Logic Input Voltage Voltage at SR Pin 5.1.4 Voltage at IS Pin VBATT VIN (H) VSR VIS ID(HS) ID(LS) ID(HS) ID(LS) ID(HS) ID(LS) 5.1.
FAN7093_F085 High Current PN Half Bridge December 2011 5.2 Pos. Functional Range Parameter 5.2.1 5.2.2 5.2.3 Symbol Limit Values Unit Conditions 18 V – 28 150 V °C Parameter deviations possible – Min. Max. 7 5.5 -40 VBATT(no Supply Voltage Range for nominal operation m) VVBATT( Supply Voltage Range for extended operation Junction Temperature ext) Tj Note: Within the functional or operating range, the IC operates as described in the circuit description.
FAN7093_F085 High Current PN Half Bridge December 2011 integrated diodes. The on state resistance Rds(on) is dependent on the supply voltage VBATT as well as on the junction temperature Tj. 7.1 Power Stages - Static Characteristics VBATT = 7 V to 18 V, Tj = -40 °C to +150 °C, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) High Side Switch - Static Characteristics Pos. Parameter Symbol 7.1.
FAN7093_F085 High Current PN Half Bridge December 2011 7.1.1 Switching Times Figure 3 Timing diagram Due to the timing differences for the rising and the falling edge there will be a slight difference between the length of the input pulse and the length of the output pulse. 7.1.
FAN7093_F085 High Current PN Half Bridge December 2011 Note 1: Not subject to production test 7.2 Protection Functions The device provides integrated protection functions. These are designed to prevent IC destruction under fault conditions described in the data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are not to be used for continuous or repetitive operation, with the exception of the current limitation.
FAN7093_F085 High Current PN Half Bridge December 2011 current dI/dt. Figure 4 Timing Diagram Current Limitation (Inductive Load) In combination with a typical inductive load, such as a motor, this results in a switched mode current limitation. This method of limiting the current has the advantage of greatly reduced power dissipation in the FAN7093_F085 compared to driving the MOSFET in linear mode.
FAN7093_F085 High Current PN Half Bridge December 2011 Pos. Parameter Symbol Limit Values Min. Typ. Unit Conditions Max. Under Voltage Shut Down 7.2.1 Turn - off Voltage 7.2.2 Turn - on Voltage 7.2.3 hysteresis VUV(ON) – VUV(OFF) 4.9 VUV(HY) – – 5.6 V – -- V VS increasing VS decreasing 0.15 – V – VOV(ON) 28 VOV(OFF) 27 VOV(HY) – tlock – – V – 35 V VS decreasing VS increasing 1.0 140 – V µs Over Voltage Lock Out 7.2.4 7.2.5 Turn - off Voltage Turn - on Voltage 7.2.6 7.
FAN7093_F085 High Current PN Half Bridge December 2011 deactivate both switches, the pin has to be set to low. No external driver is needed. The FAN7093_F085 can interface directly with a microcontroller, as long as the maximum ratings are not exceeded. 7.3.2 Dead Time Generation The dead time is generated on the control IC to prevent shoot through between the power MOSFETS. The dead time is almost independent of the selected slew rate in order to reach a high PWM frequency of 60kHz 7.3.
FAN7093_F085 High Current PN Half Bridge December 2011 Figure 5 Current sense mode and error flag mode Figure 6 Sense current versus load current and flag current FAN7093_F085 Rev. C1 13 www.fairchildsemi.
FAN7093_F085 High Current PN Half Bridge December 2011 7.3.
FAN7093_F085 High Current PN Half Bridge December 2011 7.3.6 Electrical Characteristics - Control and Diagnostics VBATT = 7 V to 18 V, Tj = -40 C to +150 C, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos Symbol Min. Control Inputs (IN and ) 7.3.1 Low level Voltage ,IN Parameter VINXH 1.5 7.3.2 VINXH High level Voltage ,IN 7.3.3 Input voltage hysteresis 7.3.4 Input current high level Current Sense 7.3.
FAN7093_F085 High Current PN Half Bridge December 2011 8 Application . Application Examples Typical motor drive application in full bridge configuration Figure 7 Full bridge application FAN7093_F085 Rev. C1 16 www.fairchildsemi.
FAN7093_F085 High Current PN Half Bridge December 2011 Typical motor drive application in half bridge configuration Figure 8 Half bridge application FAN7093_F085 Rev. C1 17 www.fairchildsemi.
FAN7093_F085 High Current PN Half Bridge December 2011 9 Package drawings FAN7093_F085 Rev. C1 18 www.fairchildsemi.
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