L6391 STMICROELECTRONICS [STMicroelectronics], L6391 Datasheet
L6391
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L6391 Summary of contents
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... L6391D L6391DTR December 2010 High-voltage high and low side driver Description The L6391 is a high-voltage device manufactured with the BCD “OFF-LINE” technology single chip half-bridge gate driver for N-channel power MOSFET or IGBT. The high side (floating) section is designed to stand a voltage rail up to 600 V. The logic inputs are CMOS/TTL compatible down to 3 ...
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... Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.3 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5.1 AC operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5.2 DC operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 Waveforms definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7 Smart shut down function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 8 Typical application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 9 Bootstrap driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 9.1 CBOOT selection and charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 10 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 2/21 Doc ID 17892 Rev 1 L6391 ...
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... L6391 1 Block diagram Figure 1. Block diagram Doc ID 17892 Rev 1 Block diagram 3/21 ...
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... Dead time setting NC Not connected GND P Ground CP- I Comparator negative input CP+ I Comparator positive input (1) O Low side driver output NC Not connected OUT P High side (floating) common voltage (1) O High side driver output P Bootstrapped supply voltage Doc ID 17892 Rev 1 L6391 Function > This CC ...
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... L6391 3 Truth table Table 3. Truth table Note: X: don't care Input LIN HIN Doc ID 17892 Rev 1 Truth table Output LVG HVG 5/21 ...
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... Symbol R Thermal resistance junction to ambient th(JA) 6/21 Parameter V V Parameter Doc ID 17892 Rev 1 Value Min Max -0 0.3 boot boot -0.3 620 - 0 0.3 out boot -0 0 0 0.3 cc -0 800 150 -50 150 SO-14 DIP-14 165 100 L6391 Unit V/ns mW °C °C Unit °C/W ...
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... L6391 4.3 Recommended operating conditions Table 6. Recommended operating conditions Symbol Pin (1) V 14- out boot out 2. LVG off. Vcc = 12.5 V Logic is operational least one of the comparator's input must be lower than 2 guarantee proper operation. ...
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... Doc ID 17892 Rev 1 = +25 °C) J Min Typ Max Unit 50 125 200 50 125 200 50 125 200 200 250 30 0.1 0.18 0.25 = 100 nF 0.48 0.6 0. 100 nF 1.35 1.6 1. 100 nF 2.6 3.0 3 100 nF 120 DT = 100 nF 250 DT = 100 nF 400 DT 75 120 35 70 L6391 µs µs µs µ ...
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... L6391 Figure 3. Timing LIN LVG HIN HVG SD LVG/HVG Figure 4. Typical dead time vs. DT resistor value 50 90 90 Doc ID 17892 Rev 1 Electrical characteristics 50 90% 10% t off 50 90% 10% t off 10% 9/21 ...
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... < 10 μ Doc ID 17892 Rev °C) J Min Typ Max 1.2 1.5 1.8 11.5 12 12.5 10 10.5 11 100 150 500 1000 1.2 1.5 1.8 10.6 11.5 12.4 9.1 10 10.9 70 110 200 = 600 V 10 120 200 290 250 430 L6391 Unit μA μ μA μA μA Ω ...
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... L6391 Table 8. DC operation electrical characteristics (V Symbol Pin Parameter Logic inputs V Low logic level voltage High logic level voltage Single input voltage il_S HIN logic “1” input bias I HINh current 3 HIN logic “0” input bias ...
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... TRI-STATE gate driver outputs OFF (HALF-BRIDGE TRI-STATE) Doc ID 17892 Rev gate driver outputs OFF (HALF-BRIDGE TRI-STATE gate driver outputs OFF (HALF-BRIDGE TRI-STATE gate driver outputs OFF (HALF-BRIDGE TRI-STATE gate driver outputs OFF (HALF-BRIDGE TRI-STATE) L6391 ...
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... L6391 7 Smart shut down function L6391 integrates a comparator committed to the fault sensing function. The comparator input can be connected to an external shunt resistor in order to implement a simple over- current detection function. The output signal of the comparator is fed to an integrated MOSFET with the open drain output available on pin 2, shared with the SD input ...
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... SD input and an RC network is connected to this SD/OD line in order to provide a mono-stable circuit, which implements a protection time that follows the fault condition. Differently from the common fault detection systems, L6391 Smart shut down architecture allows to immediately turn-off the outputs gate driver in case of fault, by minimizing the propagation delay between the fault detection event and the actual outputs switch-off ...
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... L6391 8 Typical application diagram Figure 7. Application diagram Doc ID 17892 Rev 1 Typical application diagram 15/21 ...
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... This charge μF capacitor means a voltage drop of 1V. EXT is close to GND (or lower) and in the meanwhile the OUT ) of the C charge BOOT Doc ID 17892 Rev 1 (Figure 8). In the L6391 a patented gate gate is proportional to the cyclical voltage loss. EXT = 100 nF the drop would be BOOT selection has to take into account also is 5 ms, C ...
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... L6391 The following equation is useful to compute the drop on the bootstrap DMOS: Equation 3 where Q is the gate charge of the external power MOS, R gate bootstrap DMOS and T For example: using a power MOS with a total gate charge of 30nC the drop on the bootstrap DMOS is about the T ...
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... Table 10. DIP-14 mechanical data Dim Figure 10. Package dimensions 18/21 mm. Min Typ Max 0.51 1.39 1.65 0.5 0.25 20 8.5 2.54 15.24 7.1 5.1 3.3 1.27 2.54 Doc ID 17892 Rev 1 L6391 www.st.com. inch Min Typ Max 0.020 0.055 0.065 0.020 0.010 0.787 0.335 0.100 0.600 0.280 0.201 0.130 0.050 0.100 ...
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... L6391 Table 11. SO-14 mechanical data Dim Figure 11. Package dimensions mm. Min Typ Max 1.75 0.1 0.2 1.65 0.35 0.46 0.19 0.25 0.5 8.55 8.75 5.8 6.2 1.27 7.62 3.8 4.0 4.6 5.3 0.5 1.27 0.68 Doc ID 17892 Rev 1 Package mechanical data inch Min Typ 0.003 0.013 0.007 0.019 45° (typ.) 0.336 0.228 0.050 0.300 0.149 0.181 0.019 8° ...
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... Revision history 11 Revision history Table 12. Document revision history Date 14-Dec-2010 20/21 Revision 1 First release Doc ID 17892 Rev 1 L6391 Changes ...
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... L6391 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...