SLVSE72A September 2017  – September 2017 TPS565208

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2ESD Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5Electrical Characteristics
    6. 6.6Typical Characteristics
  7. Detailed Description
    1. 7.1Overview
    2. 7.2Functional Block Diagram
    3. 7.3Feature Description
      1. 7.3.1Adaptive On-Time Control and PWM Operation
      2. 7.3.2Soft Start and Pre-Biased Soft Start
      3. 7.3.3Current Protection
      4. 7.3.4Undervoltage Lockout (UVLO) Protection
      5. 7.3.5Thermal Shutdown
    4. 7.4Device Functional Modes
      1. 7.4.1Normal Operation
      2. 7.4.2Standby Operation
  8. Application and Implementation
    1. 8.1Application Information
    2. 8.2Typical Application
      1. 8.2.1Design Requirements
      2. 8.2.2Detailed Design Procedure
        1. 8.2.2.1Custom Design With WEBENCH® Tools
        2. 8.2.2.2Output Voltage Resistors Selection
        3. 8.2.2.3Output Filter Selection
        4. 8.2.2.4Input Capacitor Selection
        5. 8.2.2.5Bootstrap Capacitor Selection
      3. 8.2.3Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1Layout Guidelines
    2. 10.2Layout Example
  11. 11Device and Documentation Support
    1. 11.1Development Support
      1. 11.1.1Custom Design With WEBENCH® Tools
    2. 11.2Receiving Notification of Documentation Updates
    3. 11.3Community Resources
    4. 11.4Trademarks
    5. 11.5Electrostatic Discharge Caution
    6. 11.6Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Specifications

Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)
MINMAXUNIT
Input voltageVIN, EN–0.319V
VBST–0.325V
VBST (10 ns transient)–0.327V
VBST (vs SW)–0.36.5V
VFB–0.36.5V
SW–219V
SW (10 ns transient)–3.521V
Operating junction temperature, TJ–40150°C
Storage temperature, Tstg–55150°C
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

ESD Ratings

VALUEUNIT
V(ESD)Electrostatic dischargeHuman-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1)±4000V
Charged-device model (CDM), per JEDEC specification JESD22-C101(2)±1500
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MINNOMMAXUNIT
VINSupply input voltage range4.5 17 V
VIInput voltage rangeVBST–0.1 23 V
VBST (10 ns transient)–0.126
VBST (vs SW)–0.16.0
EN–0.117
VFB–0.15.5
SW–1.817
SW (10 ns transient)–3.520
TJOperating junction temperature–40125°C

Thermal Information

THERMAL METRIC(1)TPS565208UNIT
DDC (SOT)
6 PINS
RθJAJunction-to-ambient thermal resistance 95.9°C/W
RθJC(top)Junction-to-case (top) thermal resistance 35.6°C/W
RθJBJunction-to-board thermal resistance 16.4°C/W
ψJTJunction-to-top characterization parameter 1.4°C/W
ψJBJunction-to-board characterization parameter 16.4°C/W
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.

Electrical Characteristics

TJ = –40°C to 125°C, VIN = 12 V (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
SUPPLY CURRENT
IVINOperating – non-switching supply current VIN current, EN = 5 V, VFB = 1 V590780µA
IVINSDNShutdown supply currentVIN current, EN = 0 V0.85µA
LOGIC THRESHOLD
VENHEN high-level input voltage1.6V
VENLEN low-level input voltage0.8V
RENEN pin resistance to GNDVEN = 12 V120245400
VFB VOLTAGE AND DISCHARGE RESISTANCE
VFBTHVFB threshold voltage 753760767mV
IVFBVFB input currentTA = 25°C, VFB = 0.8 V0±0.1µA
MOSFET
RDS(on)hHigh-side switch resistanceTA = 25°C, VBST – VSW= 5.5 V31
RDS(on)lLow-side switch resistanceTA = 25°C16
CURRENT LIMIT
IOCLCurrent limit5.36.78A
THERMAL SHUTDOWN
TSDNThermal shutdown threshold(1)Shutdown temperature172°C
Hysteresis38
ON-TIME TIMER CONTROL
tOFF(MIN)Minimum off time VFB = 0.61 V236280ns
SOFT START
tSSSoft-start timeInternal soft-start time1.0ms
FREQUENCY
FSWSwitching frequencyVIN = 12 V, VOUT = 5 V, CCM mode500kHz
OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION
VUVPOutput UVP thresholdHiccup detect (H > L)65%
THICCUP_WAIT Hiccup on time1.8ms
THICCUP_RE Hiccup time before restart14.9ms
UVLO
UVLOUVLO thresholdWake up VIN voltage4.04.3V
Shutdown VIN voltage3.33.6
Hysteresis VIN voltage(1)0.4
Not production tested.

Typical Characteristics

VIN = 12 V (unless otherwise noted)
TPS565208 D001_SLVSE72.gif
Figure 1. TPS565208 Supply Current vs Junction Temperature
TPS565208 D003_SLVSE72.gif
Figure 3. EN Pin UVLO Low Voltage vs Junction Temperature
TPS565208 D005_SLVSE72.gif
Figure 5. High-Side Rds-On vs Junction Temperature
TPS565208 D054.gif
IOUT = 1 A
Figure 7. TPS565208 Switching Frequency vs Input Voltage
TPS565208 D009_SLVSE72.gif
Figure 9. TPS565208 VOUT = 1.05 V Efficiency, L = 2.2 µH
TPS565208 D053.gif
Figure 11. TPS565208 VOUT = 1.8 V Efficiency, L = 2.2 µH
TPS565208 D013_SLVSE72.gif
Figure 13. TPS565208 VOUT = 5 V Efficiency, L = 3.3 µH
TPS565208 D002_SLVSE72.gif
Figure 2. VFB Voltage vs Junction Temperature
TPS565208 D004_SLVSE72.gif
Figure 4. TPS565208 EN Pin UVLO High Voltage vs Junction Temperature
TPS565208 D006_SLVSE72.gif
Figure 6. Low-Side Rds-On vs Junction Temperature
TPS565208 D052.gif
VIN = 12 V
Figure 8. TPS565208 Switching Frequency vs Output Current
TPS565208 D010_SLVSE72.gif
Figure 10. TPS565208 VOUT = 1.5 V Efficiency, L = 2.2 µH
TPS565208 D012_SLVSE72.gif
Figure 12. TPS565208 VOUT = 3.3 V Efficiency, L = 2.2 µH