TL598CDG4

  
  
 
 
  SLVS053D − FEBRUARY 1988 − REVISED NOVEMBER 2003 D Complete PWM Power-Control Function D Totem-Pole Outputs for 200-mA Sink or D OR N PACKAGE (TOP VIEW) Source Current ERROR AMP 1 D Output Control Selects Parallel or D D D D D D Push-Pull Operation Internal Circuitry Prohibits Double Pulse at Either Output Variable Dead-Time Provides Control Over Total Range Internal Regulator Provides a Stable 5-V Reference Supply, Trimmed to 1% Tolerance On-Board Output Current-Limiting Protection Undervoltage Lockout for Low-VCC Conditions Separate Power and Signal Grounds 1IN+ 1 16 2IN+ ERROR AMP 2 1IN− 2 15 2IN− FEEDBACK 3 14 REF DTC 4 13 OUTPUT CTRL CT 5 12 RT 6 11 VCC VC SIGNAL GND 7 10 POWER GND OUT1 8 9 OUT2 description/ordering information The TL598 incorporates all the functions required in the construction of pulse-width-modulated (PWM) controlled systems on a single chip. Designed primarily for power-supply control, the TL598 provides the systems engineer with the flexibility to tailor the power-supply control circuits to a specific application. The TL598 contains two error amplifiers, an internal oscillator (externally adjustable), a dead-time control (DTC) comparator, a pulse-steering flip-flop, a 5-V precision reference, undervoltage lockout control, and output control circuits. Two totem-pole outputs provide exceptional rise- and fall-time performance for power FET control. The outputs share a common source supply and common power ground terminals, which allow system designers to eliminate errors caused by high current-induced voltage drops and common-mode noise. The error amplifier has a common-mode voltage range of 0 V to VCC − 2 V. The DTC comparator has a fixed offset that prevents overlap of the outputs during push-pull operation. A synchronous multiple supply operation can be achieved by connecting RT to the reference output and providing a sawtooth input to CT. The TL598 device provides an output control function to select either push-pull or parallel operation. Circuit architecture prevents either output from being pulsed twice during push-pull operation. The output frequency 1 . For single-ended applications: for push-pull applications is one-half the oscillator frequency f O + 2 RT CT fO + 1 . RT CT ǒ Ǔ ORDERING INFORMATION PDIP (N) 0°C 0 C to 70 70°C C ORDERABLE PART NUMBER PACKAGE† TA SOIC (D) Tube of 25 TL598CN Tube of 40 TL598CD Reel of 2500 TL598CDR TOP-SIDE MARKING TL598CN TL598C † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright  2003, Texas Instruments Incorporated  
 
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  SLVS053D − FEBRUARY 1988 − REVISED NOVEMBER 2003 FUNCTION TABLE INPUT/OUTPUT CTRL VI = GND VI = REF OUTPUT FUNCTION Single-ended or parallel output Normal push-pull operation functional block diagram OUTPUT CTRL (see Function Table) 13 RT CT DTC 6 5 Oscillator ≈0.1 V 4 1IN+ 1IN− 2IN+ 2IN− FEEDBACK 2 16 15 8 VC OUT1 C1 Error Amplifier 1 11 1D DTC Comparator + − 1 PWM Comparator 9 Error Amplifier + 2 − Pulse-Steering Flip-Flop 3 Reference Regulator Undervoltage Lockout Control OUT2 10 POWER GND 12 V CC 14 REF 7 SIGNAL GND 0.7 mA absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 V Amplifier input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC + 0.3 V Collector voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 V Output current (each output), sink or source, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 mA Package thermal impedance, θJA (see Notes 2 and 3): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W Operating virtual junction temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values, except differential voltages, are with respect to the signal ground terminal. 2. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) − TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability. 3. The package thermal impedance is calculated in accordance with JESD 51-7. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 
  
  
 
 
  SLVS053D − FEBRUARY 1988 − REVISED NOVEMBER 2003 recommended operating conditions MIN MAX VCC VI Supply voltage 7 40 V Amplifier input voltage 0 V IO IIL Collector voltage VCC−2 40 Output current (each output), sink or source Current into feedback terminal UNIT V 200 mA 0.3 mA 0.00047 10 µF 1.8 500 kΩ Oscillator frequency 1 300 kHz Operating free-air temperature 0 70 °C CT Timing capacitor RT fosc Timing resistor TA electrical characteristics over recommended operating free-air temperature range, VCC = 15 V (unless otherwise noted) reference section (see Note 4) TEST CONDITIONS† PARAMETER TA = 25°C TA = full range Output voltage (REF) IO = 1 mA Input regulation VCC = 7 V to 40 V Output regulation IO = 1 mA to 10 mA Output voltage change with temperature Short-circuit output current§ ∆TA = MIN to MAX REF = 0 V MIN TYP‡ MAX 4.95 5 5.05 4.9 TA = 25°C TA = 25°C 5.1 2 25 1 15 TA = full range 50 2 10 UNIT V mV mV mV/V −10 −48 mA † Full range is 0°C to 70°C. ‡ All typical values, except for parameter changes with temperature, are at TA = 25°C. § Duration of the short circuit should not exceed one second. NOTE 4: Pulse-testing techniques that maintain the junction temperature as close to the ambient temperature as possible must be used. oscillator section, CT = 0.001 µF, RT = 12 kΩ (see Figure 1) (see Note 4) PARAMETER TEST CONDITIONS† Frequency Standard deviation of frequency¶ All values of VCC, CT, RT, TA constant Frequency change with voltage VCC = 7 V to 40 V, ∆TA = full range TA = 25°C ∆TA = full range, CT = 0.01 µF Frequency change with temperature# MIN TYP‡ MAX UNIT 100 kHz 100 Hz/kHz 1 10 70 120 50 80 Hz/kHz Hz/kHz † Full range is 0°C to 70°C. ‡ All typical values, except for parameter changes with temperature, are at TA = 25°C. ¶ Standard deviation is a measure of the statistical distribution about the mean, as derived from the formula: s + Ǹ N ȍ (xn * X)2 n+1 N*1 # Effects of temperature on external RT and CT are not taken into account. NOTE 4. Pulse-testing techniques that maintain the junction temperature as close to the ambient temperature as possible must be used. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 
  
  
 
 
  SLVS053D − FEBRUARY 1988 − REVISED NOVEMBER 2003 electrical characteristics over recommended operating free-air temperature range, VCC = 15 V (unless otherwise noted) (continued) error amplifier section (see Note 4) PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT Input offset voltage FEEDBACK = 2.5 V 2 10 mV Input offset current FEEDBACK = 2.5 V 25 250 nA Input bias current FEEDBACK = 2.5 V 0.2 1 µA 0 to VCC−2 Common-mode input voltage range VCC = 7 V to 40 V Open-loop voltage amplification ∆VO (FEEDBACK) = 3 V, VO (FEEDBACK) = 0.5 V to 3.5 V 70 Unity-gain bandwidth Common-mode rejection ratio ∆VIC = 6.5 V, Output sink current (FEEDBACK) VCC = 40 V, FEEDBACK = 0.5 V Output source current (FEEDBACK) FEEDBACK = 3.5 V Phase margin at unity gain FEEDBACK = 0.5 V to 3.5 V, TA = 25°C V 95 dB 800 kHz 65 80 dB 0.3 0.7 mA −2 RL = 2 kΩ mA 65° Supply-voltage rejection ratio FEEDBACK = 2.5 V, ∆VCC = 33 V, RL = 2 kΩ 100 dB † All typical values, except for parameter changes with temperature, are at TA = 25°C. NOTE 4. Pulse-testing techniques that maintain the junction temperature as close to the ambient temperature as possible must be used. electrical characteristics over recommended operating free-air temperature range, VCC = 15 V (unless otherwise noted) undervoltage lockout section (see Note 4) TEST CONDITIONS‡ PARAMETER Threshold voltage TA = 25°C ∆TA = full range Hysteresis§ TA = 25°C TA = full range MIN MAX 4 6 3.5 6.9 100 UNIT V mV 50 ‡ Full range is 0°C to 70°C. § Hysteresis is the difference between the positive-going input threshold voltage and the negative-going input threshold voltage. NOTE 4. Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible. output section (see Note 4) PARAMETER TEST CONDITIONS High-level output voltage VCC = 15 V, VC = 15 V IO = −200 mA IO = −20 mA Low-level output voltage VCC = 15 V, VC = 15 V IO = 200 mA IO = 20 mA Output-control input current VI = Vref VI = 0.4 V MIN MAX UNIT 12 V 13 2 0.4 V 3.5 mA 100 µA NOTE 4. Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 
  
  
 
 
  SLVS053D − FEBRUARY 1988 − REVISED NOVEMBER 2003 electrical characteristics over recommended operating free-air temperature range, VCC = 15 V (unless otherwise noted) (continued) dead-time control section (see Figure 1) (see Note 4) PARAMETER TEST CONDITIONS Input bias current (DTC) VI = 0 to 5.25 V DTC = 0 V Maximum duty cycle, each output MIN Maximum duty cycle MAX UNIT −2 −10 µA 3 3.3 0.45 Zero duty cycle Input threshold voltage (DTC) TYP† 0 V † All typical values, except for parameter changes with temperature, are at TA = 25°C. NOTE 4. Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible. pwm comparator section (see Note 4) PARAMETER Input threshold voltage (FEEDBACK) TEST CONDITIONS MIN DTC = 0 V TYP† MAX 3.75 4.5 UNIT V Input sink current (FEEDBACK) V(FEEDBACK) = 0.5 V 0.3 0.7 mA † All typical values, except for parameter changes with temperature, are at TA = 25°C. NOTE Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible. total device (see Figure 1) (see Note 4) PARAMETER Standby supply current TEST CONDITIONS RT = Vref, All other inputs and outputs open MIN VCC = 15 V VCC = 40 V TYP† MAX 15 21 20 26 UNIT mA Average supply current DTC = 2 V 15 mA † All typical values, except for parameter changes with temperature, are at TA = 25°C. NOTE 4. Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible. switching characteristics, TA = 25°C (see Note 4) PARAMETER Output-voltage rise time Output-voltage fall time TEST CONDITIONS CL = 1500 pF, See Figure 2 VC = 15 V, VCC = 15 V, MIN TYP MAX 60 150 35 75 UNIT ns NOTE 4. Pulse-testing techniques must be used that maintain the junction temperature as close to the ambient temperature as possible. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 
  
  
 
 
  SLVS053D − FEBRUARY 1988 − REVISED NOVEMBER 2003 PARAMETER MEASUREMENT INFORMATION Output VC 15 V 1 2 Test Inputs 3 4 5 6 12 VCC IN+ IN− ERROR AMP 1 IN+ ERROR AMP 2 IN− 15 50 kΩ FEEDBACK DTC REF CT OUTPUT CTRL RT VC 0.001 µF OUT1 12 kΩ 7 16 OUT2 SIGNAL GND POWER GND POWER GND 14 13 11 8 9 OUTPUT CONFIGURATION 15 V OUTPUT 1 OUTPUT 2 − VI + FEEDBACK 10 REF − + MAIN DEVICE TEST CIRCUIT ERROR-AMPLIFIER TEST CIRCUIT Figure 1. Test Circuits VC 90% 90% Output CL = 1500 pF POWER GND OUTPUT CONFIGURATION 10% 10% 0V tr tf OUTPUT-VOLTAGE WAVEFORM Figure 2. Switching Output Configuration and Voltage Waveform 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 
  
  
 
 
  SLVS053D − FEBRUARY 1988 − REVISED NOVEMBER 2003 TYPICAL CHARACTERISTICS OSCILLATOR FREQUENCY AND FREQUENCY VARIATION † vs TIMING RESISTANCE AMPLIFIER VOLTAGE AMPLIFICATION vs FREQUENCY 80 100 k VCC = 15 V VCC = 15 V ∆VO = 3 V TA = 25°C Amplifier Voltage Amplification − dB fosc − Oscillator Frequency − Hz 40 k −2% 10 k 4k 0.001 µF −1% 0.01 µF 0% 0.1 µF 1k 400 100 † Df = 1% CT = 1 µF 40 10 1k 4k 10 k 40 k 100 k RT − Timing Resistance − Ω 400 k 1M 60 40 20 0 1k 10 k 100 k 1M f − Frequency − Hz † Frequency variation (∆f) is the change in predicted oscillator frequency that occurs over the full temperature range. Figure 4 Figure 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 PACKAGE OPTION ADDENDUM www.ti.com 14-Aug-2021 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) (6) TL598CD ACTIVE SOIC D 16 40 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 TL598C TL598CDR ACTIVE SOIC D 16 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 TL598C TL598CN ACTIVE PDIP N 16 25 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 TL598CN TL598CNE4 ACTIVE PDIP N 16 25 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 TL598CN (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of