FAN7888 Fairchild Semiconductor, FAN7888 Datasheet

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FAN7888

Manufacturer Part Number
FAN7888
Description
The FAN7888 is a monolithic three half-bridge gate-drive IC designed for high-voltage, high-speed driving MOSFETs and IGBTs operating up to +200V
Manufacturer
Fairchild Semiconductor
Datasheet

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FAN7888 • Rev. 1.0.0
© 2008 Fairchild Semiconductor Corporation
FAN7888
3 Half-Bridge Gate-Drive IC
Features
Applications
Ordering Information
Floating Channel for Bootstrap Operation to +200V
Typically 350mA/650mA Sourcing/Sinking Current
Driving Capability for All Channels
3 Half-Bridge Gate Driver
Extended Allowable Negative V
Signal Propagation at V
Matched Propagation Delay Time Maximum 50ns
3.3V and 5V Input Logic Compatible
Built-in Shoot-Through Prevention Circuit for All
Channels with Typically 270ns Dead Time
Built-in Common Mode dv/dt Noise Canceling Circuit
Built-in UVLO Functions for All Channels
3-Phase Motor Inverter Driver
All packages are lead free per JEDEC: J-STD-020B standard.
Part Number
FAN7888MX
FAN7888M
BS
=15V
Package
20-SOIC
S
Swing to -9.8V for
Operating Temperature Range
Description
The FAN7888 is a monolithic three half-bridge gate-drive
IC designed for high-voltage, high-speed driving MOS-
FETs and IGBTs operating up to +200V.
Fairchild’s high-voltage process and common-mode
noise canceling technique provide stable operation of
high-side drivers under high-dv/dt noise circumstances.
An advanced level-shift circuit allows high-side gate
driver operation up to V
The UVLO circuits prevent malfunction when V
V
Output drivers typically source/sink 350mA/650mA,
respectively, which is suitable for three-phase half-bridge
applications in motor drive systems.
-40°C to +125°C
BS
are lower than the specified threshold voltage.
20-SOIC
S
= -9.8V (typical) for V
Packing Method
Tape & Reel
Tube
www.fairchildsemi.com
May 2008
BS
DD
=15V.
and

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FAN7888 Summary of contents

Page 1

... All packages are lead free per JEDEC: J-STD-020B standard. © 2008 Fairchild Semiconductor Corporation FAN7888 • Rev. 1.0.0 Description The FAN7888 is a monolithic three half-bridge gate-drive IC designed for high-voltage, high-speed driving MOS- FETs and IGBTs operating up to +200V. Fairchild’s high-voltage process and common-mode noise canceling technique provide stable operation of Swing to -9 ...

Page 2

... Internal Block Diagram HIN1 HIN2 SCHMITT TRIGGER INPUT HIN3 SHOOT-THOUGH LIN1 PREVENTION LIN2 LIN3 CONTROL LOGIC © 2008 Fairchild Semiconductor Corporation FAN7888 • Rev.1.0 HIN1 B1 19 HO1 LIN1 HIN2 LO1 17 LIN2 V 16 HIN3 B2 15 HO2 ...

Page 3

... GND LO2 HO2 LO1 HO1 © 2008 Fairchild Semiconductor Corporation FAN7888 • Rev.1.0.0 HIN1 LIN1 2 19 HO1 HIN2 LIN2 4 17 LO1 HIN3 5 16 HO2 LIN3 6 15 LO3 ...

Page 4

... High-side Floating Supply Offset Voltage S1,2,3 V Supply Voltage DD V High-side Output Voltage HO1,2,3 V Low-side Output Voltage LO1,2,3 V Logic Input Voltage (HIN1,2,3 and LIN1,2, Ambient Temperature A © 2008 Fairchild Semiconductor Corporation FAN7888 • Rev.1.0.0 =25°C, unless otherwise specified. A Parameter B1,2,3 S1,2,3 (1)(2)(3) Parameter 4 Min. Max. Unit -0.3 225 - ...

Page 5

... Logic "1" Input Bias Current IN+ I Logic "0" Input Bias Current IN- R Input Pull-down Resistance IN Note: 4. This parameter is guaranteed by design. © 2008 Fairchild Semiconductor Corporation FAN7888 • Rev.1.0.0 = 25°C, unless otherwise specified. The V A S1,2,3 Condition V = LIN1,2,3 f =20kHz, rms Value LIN1,2,3 ...

Page 6

... Turn-on Rise Time R t Turn-off Fall Time F MT1 Turn-on Delay Matching I t MT2 Turn-off Delay Matching Dead Time MDT Dead-time Matching I t © 2008 Fairchild Semiconductor Corporation FAN7888 • Rev.1.0.0 = GND 1000pF unless otherwise specified. S1,2,3 Load Conditions V =0V S1,2,3 V =0V S1,2 ON(H) ...

Page 7

... Figure 6. Turn-on Rise Time vs. Temp -40 - Temperature [°C] Figure 8. Turn-on Delay Matching vs. Temp. © 2008 Fairchild Semiconductor Corporation FAN7888 • Rev.1.0.0 300 250 200 150 100 50 0 -40 - 100 120 Figure 5. Turn-off Propagation Delay vs. Temp. 100 ...

Page 8

... Figure 12. Quiescent V DD vs. Temp. 1000 800 600 400 200 0 -40 - Temperature [°C] Figure 14. Operating V Supply Current vs. Temp. DD © 2008 Fairchild Semiconductor Corporation FAN7888 • Rev. 1.0.0 (Continued 100 120 -40 Figure 11. Dead-Time Matching vs. Temp. 120 100 80 60 ...

Page 9

... Figure 16. V UVLO+ vs. Temp. DD 9.0 8.5 8.0 7.5 7.0 -40 - Temperature [°C] Figure 18. V UVLO+ vs. Temp. BS 1.0 0.8 0.6 0.4 0.2 0.0 -40 - Temperature [°C] Figure 20. High-Level Output Voltage vs. Temp. © 2008 Fairchild Semiconductor Corporation FAN7888 • Rev. 1.0.0 (Continued) 9.0 8.5 8.0 7.5 7 100 120 -40 9.0 8.5 8.0 7.5 7 100 120 -40 0.60 0.45 0.30 0.15 0. 100 120 -40 Figure 21 ...

Page 10

... Temperature [°C] Figure 24. Logic Input High Bias Current vs. Temp. 500 400 300 200 100 0 -40 - Temperature [°C] Figure 26. Input Pull-down Resistance vs. Temp. © 2008 Fairchild Semiconductor Corporation FAN7888 • Rev. 1.0.0 (Continued) 3.0 2.5 2.0 1.5 1.0 0.5 0 100 120 -40 Figure 23. Logic Low Input Voltage vs. Temp. -7 ...

Page 11

... LO1,2,3/HO1,2,3 Figure 28. Waveforms for Shoot-Through Prevention © 2008 Fairchild Semiconductor Corporation FAN7888 • Rev.1.0.0 2. Operational Notes The FAN7888 is a three half-bridge gate driver with internal typically 120ns dead-time for the three-phase Brushless DC (BLDC) motor drive system, as shown in Figure 1. ) and bootstrap capaci- Figure 29 shows a switching sequence of 120° ...

Page 12

... V S1 Phase Back EMF Current Flow Direction Figure 29. 120° Commutation Operation Waveforms for 3-Phase BLDC Motor Application Switching Time Definitions © 2008 Fairchild Semiconductor Corporation FAN7888 • Rev. 1.0.0 (Continued 120 150 180 Q1 (HIN1) Q2 (LIN3 ...

Page 13

... Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ © 2008 Fairchild Semiconductor Corporation FAN7888 • Rev.1.0.0 13.00 12.60 A 11.43 ...

Page 14

... Fairchild Semiconductor Corporation FAN7888 • Rev. 1.0.0 14 www.fairchildsemi.com ...

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