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  • UCC27311A-Q1 Automotive 120V, 3.7A/4.5A Half-Bridge Driver with 8V UVLO and Enable

    • SLUSEY2B June   2023  – July 2024 UCC27311A-Q1

      PRODUCTION DATA  

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  • UCC27311A-Q1 Automotive 120V, 3.7A/4.5A Half-Bridge Driver with 8V UVLO and Enable
  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Switching Characteristics
    7. 5.7 Timing Diagrams
    8. 5.8 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Input Stages
      2. 6.3.2 Enable
      3. 6.3.3 Undervoltage Lockout (UVLO)
      4. 6.3.4 Level Shifter
      5. 6.3.5 Boot Diode
      6. 6.3.6 Output Stages
      7. 6.3.7 Negative Voltage Transients
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Input Threshold Type
        2. 7.2.2.2 VDD Bias Supply Voltage
        3. 7.2.2.3 Peak Source and Sink Currents
        4. 7.2.2.4 Propagation Delay
        5. 7.2.2.5 Power Dissipation
      3. 7.2.3 Application Curves
  9. 8 Power Supply Recommendations
  10. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
    3. 9.3 Thermal Considerations
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Third-Party Products Disclaimer
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Tape and Reel Information
    2. 12.2 Mechanical Data
  14. IMPORTANT NOTICE

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DRC|10
Thermal pad, mechanical data (Package|Pins)
Orderable Information
  • slusey2b_oa
  • slusey2b_pm
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Data Sheet

UCC27311A-Q1 Automotive 120V, 3.7A/4.5A Half-Bridge Driver
with 8V UVLO and Enable

1 Features

  • Drives two N-channel MOSFETs in half-bridge configuration
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1
  • –40°C to +150°C junction temperature range
  • 120V abs max voltage on HB pin
  • 3.7A sink, 4.5A source output currents
  • 8V to 17V VDD operating range (20V abs max) with UVLO
  • –(28–VDD)V abs max negative transient tolerance on HS pin (<100ns pulse)
  • –10V to +20V abs max input pins tolerance, independent of supply voltage range (TTL compatible)
  • Switching parameters:
    • 20ns typical propagation delay times
    • 7.2ns rise and 5.5ns fall time with 1000pF load
    • 4ns typical delay matching
  • Integrated bootstrap diode
  • Enable/disable functionality with low current consumption (3μA typical) when disabled
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design

2 Applications

  • Automotive DC/DC converters and OBC
  • 2-wheeler and 3-wheeler traction drive and battery pack
  • Electric power steering (EPS)
  • Wireless charging
  • Smart glass module
UCC27311A-Q1 Typical Application Diagram Typical Application Diagram

3 Description

The UCC27311A-Q1 is a robust gate driver designed to drive two N-channel MOSFETs in a half-bridge or synchronous buck configuration with an absolute maximum bootstrap voltage of 120V. Its 3.7A peak source and 4.5A peak sink current capability allows the UCC27311A-Q1 to drive large power MOSFETs with minimized switching losses during the transition through the Miller Plateau. The switching node (HS pin) can handle negative transient voltage, which allows the high-side channel to be protected from inherent negative voltages caused by parasitic inductance and stray capacitance.

The inputs are independent of supply voltage and are able to withstand -10V and +20V absolute maximum ratings. The low-side and high-side gate drivers are matched to 4ns between the turn on and turn off of each other and are controlled throught the LI and HI input pins respectively. An on-chip 120V rated bootstrap diode eliminates the need to add discrete bootstrap diodes. Undervoltage lockout (UVLO) is provided for both the high-side and the low-side drivers which provides symmetric turn on and turn off behavior and forces the outputs low if the drive voltage is below the specified threshold.

Package Information
PART NUMBER PACKAGE(1) BODY SIZE (NOM)
UCC27311AQDRCRQ1 DRC (VSON, 10) 3mm × 3mm
(1) For all available packages, see Section 12.

4 Pin Configuration and Functions

UCC27311A-Q1 DRC Package 10-Pin SON Top ViewFigure 4-1 DRC Package 10-Pin SON Top View
Table 4-1 Pin Functions
PIN TYPE(3) DESCRIPTION
NAME DRC
EN 6 I Enable input. When this pin is pulled high, it will enable the driver. If left floating or pulled low, it will disable the driver. A filter capacitor, typically 1-10nF, is recommended to be placed from EN to VSS to increase noise immunity in sensitive applications.
HB 3 P High-side bootstrap supply. The bootstrap diode is on-chip but the external bootstrap capacitor is required. Connect positive side of the bootstrap capacitor to this pin. Typical range of HB bypass capacitor is 0.022µF to 0.1µF. The capacitor value is dependant on the gate charge of the high-side MOSFET and must also be selected based on speed and ripple criteria.
HI 7 I High-side input.(1)
HO 4 O High-side output. Connect to the gate of the high-side power MOSFET.
HS 5 P High-side source connection. Connect to source of high-side power MOSFET. Connect the negative side of bootstrap capacitor to this pin.
LI 8 I Low-side input.(1)
LO 10 O Low-side output. Connect to the gate of the low-side power MOSFET.
VDD 1 P Positive supply to the lower-gate driver. Decouple this pin to VSS (GND). Typical decoupling capacitor range is 0.22µF to 4.7µF (see (2)).
VSS 9 G Negative supply terminal for the device that is generally grounded.
Thermal pad Pad — Connect to a large thermal mass trace or GND plane to dramatically improve thermal performance. Pin VSS and the exposed thermal pad are internally connected.
(1) HI, LI, and EN inputs are assumed to connect to a low impedance source signal. The source output impedance is assumed less than 100Ω. If the source impedance is greater than 100Ω, add a bypassing capacitor, each, between HI to VSS, LI to VSS, and EN to VSS. The added capacitor value depends on the noise levels presented on the pins, typically from 1nF to 10nF should be effective to eliminate the possible noise effect. When noise is present on two pins, HI or LI, the effect is to cause HO and LO malfunctions to have wrong logic outputs.
(2) For cold temperature applications TI recommends the upper capacitance range. Follow the Layout Guidelines for PCB layout.
(3) G = Ground, I = Input, O = Output, and P = Power.

5 Specifications

5.1 Absolute Maximum Ratings

Over operating free-air temperature range and all voltages are with respect to Vss (unless otherwise noted).(1)
MIN MAX UNIT
VDD Supply voltage –0.3 20 V
VHI, VLI Input voltages on HI and LI -10 20 V
VEN Input voltages on EN Input voltages on EN -10 20 V
VLO Output voltage on LO DC –0.3 VDD + 0.3 V
Repetitive pulse < 100 ns(2) –2 VDD + 0.3
VHO Output voltage on HO DC VHS – 0.3 VHB + 0.3 V
Repetitive pulse < 100 ns(2) VHS – 2 VHB + 0.3
VHS Voltage on HS DC –1 120 V
Repetitive pulse < 100 ns(2) –(28 – VDD) 120
VHB Voltage on HB –0.3 120 V
Voltage on HB-HS –0.3 20 V
TJ Operating junction temperature –40 150 °C
Tstg Storage temperature –65 150 °C
(1) Operation outside the Absolute Maximum Ratings may cause permanent device damage. Absolute Maximum Ratings do not imply functional operation of the device at these or any other conditions beyond those listed under Recommended Operating Conditions. If used outside the Recommended Operating Conditions but within the Absolute Maximum Ratings, the device may not be fully functional, and this may affect device reliability, functionality, performance, and shorten the device lifetime.
(2) Values are verified by characterization and are not production tested.

 
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