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OUT2

GND

/SYNC

REF

OUT1

COMP

LM5033

www.ti.com

SNVS181B –APRIL 2004–REVISED APRIL 2013

LM5033 100V Push-Pull Voltage Mode PWM Controller

Check for Samples: LM5033

FEATURES

PACKAGE

• Internal High Voltage (100V) Start-Up

• VSSOP-10

Regulator

• WSON-10

• Single Resistor Oscillator Setting

DESCRIPTION

• Synchronizable

The LM5033 High Voltage PWM controller contains

• Precision Reference Output

all the features needed to implement Push-Pull, Half-

• Adjustable Soft-Start

Bridge, and Full-Bridge topologies. Applications

• Over-Current Protection

include closed loop voltage mode converters with a

highly regulated output voltage, or an open loop "DC

• Direct Optocoupler Interface

transformer" such as an Intermediate Bus Converter

• 1.5A Peak Gate Drivers

(IBC) with an efficiency >95%. Two alternating gate

• Thermal Shutdown

driver outputs with a specified deadtime are provided.

The LM5033 includes a start-up regulator that

operates over a wide input range of 15V to 100V.

APPLICATIONS

Additional features include: precision voltage

• Intermediate DC/DC Bus Converter

reference output, current limit detection, remote

• Telecommunication Power Converters

shutdown, softstart, sync capability and thermal

shutdown. This high speed IC has total propagation

• Industrial Power Converters

delays less than 100 ns and a 1MHz capable

• +42V Automotive Systems

oscillator.

Connection Diagram

Figure 1. 10-Lead VSSOP, WSON

Package Number DGS0010A, DPR0010A

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.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (24 pages)

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LM5033 www.ti.com SNVS181B – APRIL 2004 – REVISED APRIL 2013 LM5033 100V Push-Pull Voltage Mode PWM Controller Check for Samples: LM5033 FEATURES PACKAGE • • • 1 2 • • • • • • • • Internal High Voltage (100V) Start-Up Regulator Single Resistor Oscillator Setting Synchronizable Precision Reference Output Adjustable Soft-Start Over-Current Protection Direct Optocoupler Interface 1.
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LM5033 SNVS181B – APRIL 2004 – REVISED APRIL 2013 www.ti.com PIN DESCRIPTIONS 2 PIN NAME DESCRIPTION APPLICATION INFORMATION 1 Vin Input Voltage Input to the start-up regulator. Input range is 15V to 90V, with transient capability to 100V . 2 REF 2.5V precision reference output Sink only, requires an external pull-up resistor. This can be used as a reference for external circuitry. 3 COMP PWM Input Feedback to the PWM comparator’s inverting input, through a 3:1 divider.
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LM5033 www.ti.com SNVS181B – APRIL 2004 – REVISED APRIL 2013 Block Diagram 9.6V SERIES REGULATOR (1) VIN VCC (4) 5.2V 4.9V 2.5V 0.5V REFERENCE GENERATOR Disable START UP CIRCUIT 2.5V REF (2) UNDERVOLTAGE SENSOR THERMAL SHUTDOWN SENSOR VCC OUT2 (6) CLK DRIVER (9) Rt /Sync OSC D Q 0V 5.2V RAMP GENERATOR 5k PWM 10k (3) COMP Q C 0.65V S R SET CLR Q Q + - 5k Offset + - (8) CS VCC OUT1 (5) Current Sense SS 0.5V DRIVER + - GND (7) 5.0V SS (10) SS 10 PA LOGIC Figure 2.
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LM5033 SNVS181B – APRIL 2004 – REVISED APRIL 2013 Absolute Maximum Ratings www.ti.com (1) (2) VIN to GND -0.3V to 100V VCC to GND -0.3V to 16V Rt/Sync to GND -0.3V to 5.5V Pins 3, 8, 10 to GND -0.3V to 7.0V ESD Rating (3) Human Body Model 2kV Storage Temperature Range -65°C to 150°C Junction Temperature 150°C Power Dissipation (1) (2) (3) (4) (4) Internally Limited Absolute Maximum Ratings are limits beyond which damage to the device may occur.
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LM5033 www.ti.com SNVS181B – APRIL 2004 – REVISED APRIL 2013 Electrical Characteristics (continued) Specifications with standard typeface are for TJ = 25°C, and those with boldface type apply over full Operating Junction Temperature range. VIN = 48V, VCC = 10V applied externally, RT = 26.7kΩ, unless otherwise stated. See (1) and (2). Symbol Parameter Conditions CS delay to output Pin 8 taken from zero to 0.6V. Time for Out1 or Out2 to fall to 90% of Vcc.
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LM5033 SNVS181B – APRIL 2004 – REVISED APRIL 2013 www.ti.com Typical Performance Characteristics VCC vs ICC (VIN = 48V) 16 16 14 14 12 12 10 10 VCC (V) VCC (V) VCC vs VIN 8 8 6 6 4 4 2 2 VCC not externally powered 0 0 0 2 4 6 8 10 12 14 0 16 5 10 25 30 Figure 3. Figure 4. Oscillator Frequency vs RT Oscillator Frequency vs Temperature RT = 26.
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LM5033 www.ti.com SNVS181B – APRIL 2004 – REVISED APRIL 2013 Typical Performance Characteristics (continued) Output Duty Cycle vs Comp Voltage RT = 16.5kΩ VREF vs IREF 3.5 50 2.5 30 VREF (V) OUTPUT DUTY CYCLE (%) 3.0 40 20 2.0 1.5 1.0 10 0.5 0 0 0 1.0 2.0 3.0 4.0 5.0 0 5 COMP PIN VOLTAGE - PIN 3 (V) 10 15 20 25 IREF (mA) Figure 9. Figure 10.
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LM5033 SNVS181B – APRIL 2004 – REVISED APRIL 2013 www.ti.com FUNCTIONAL DESCRIPTION The LM5033 High Voltage PWM controller contains all of the features needed to implement Push-Pull and Bridge topologies, using voltage-mode control in a small 10 pin package. Features included are: startup regulator, precision 2.5V reference output, current limit detection, alternating gate drivers, sync capability, thermal shutdown, softstart, and remote shutdown. This high speed IC has total propagation delays <100 ns.
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LM5033 www.ti.com SNVS181B – APRIL 2004 – REVISED APRIL 2013 (0.5 x TS) - TD DC = TS where • • TS is the period of each output TD is the deadtime (1) For example, if the oscillator frequency is 200 kHz, each output will cycle at 100 kHz, and TS = 10 µs. Using the nominal deadtime of 135 ns, the maximum duty cycle at this frequency is 48.65%. Using the minimum deadtime of 85 ns, the maximum duty cycle increases to 49.15%.
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LM5033 SNVS181B – APRIL 2004 – REVISED APRIL 2013 www.ti.com In the event of a current fault, (see Current Sense section) the softstart capacitor will be discharged by an internal pull-down device. The falling voltage at pin 10 will pull down the COMP pin, thereby ensuring a minimum output duty cycle when the outputs are re-enabled. The softstart capacitor will then begin to ramp up, allowing the COMP voltage to increase.
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LM5033 www.ti.com SNVS181B – APRIL 2004 – REVISED APRIL 2013 Supply Voltage 50 VIN 0.1 PF LM5033 Figure 13. Input Transient Protection If VCC is not powered externally, requiring all internal bias currents for the LM5033, and output driver currents, to be supplied at Vin and through the internal regulator, the required input current (Iin) is shown in the Typical Performance Characteristics (IIN vs. VIN).
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LM5033 SNVS181B – APRIL 2004 – REVISED APRIL 2013 www.ti.com If the LM5033 is to be synchronized to an external clock, that signal must be coupled into pin 9 through a 100 pF capacitor. The Rt resistor is still required in this case, and it must be selected to set the internal oscillator to a frequency lower than the external synchronizing frequency. The amplitude of the external pulses must take pin 9 above 3.8V on the low-to-high transition but no higher than 5.5V.
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LM5033 www.ti.com SNVS181B – APRIL 2004 – REVISED APRIL 2013 APPLICATION CIRCUIT EXAMPLE Figure 17 shows an example circuit for a half-bridge 200W DC/DC converter built in a quarter brick format. The circuit is that of an intermediate bus converter (IBC) which operates open-loop (unregulated output), converting a nominal 48V input to a nominal 9.0V output with a 30 mΩ output impedance.
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LM5033 SNVS181B – APRIL 2004 – REVISED APRIL 2013 www.ti.com Figure 17. Intermediate Bus Converter 40V - 60V Input; 7.5 - 11.
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LM5033 www.ti.com SNVS181B – APRIL 2004 – REVISED APRIL 2013 Table 1. Bill of Materials (for the circuit of Figure 17) Item Device Package Value BR1 Schottky diode bridge, Diodes, Inc. BAT54BRW SOT-363 30V, 0.2A C1-4 Capacitor 1812 6.8 µF, 50V C5 Capacitor 0805 0.47 µF, 25V C6 Capacitor 0805 0.047 µF, 25V C7, 12, 16, 20-23 Capacitor 0805 0.
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LM5033 SNVS181B – APRIL 2004 – REVISED APRIL 2013 www.ti.com Table 1. Bill of Materials (for the circuit of Figure 17) (continued) 16 Item Device Package Value T2 Current sense transformer, Pulse Eng.
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LM5033 www.ti.com SNVS181B – APRIL 2004 – REVISED APRIL 2013 REVISION HISTORY Changes from Revision A (April 2013) to Revision B • Page Changed layout of National Data Sheet to TI format ..........................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 14-Feb-2014 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
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PACKAGE MATERIALS INFORMATION www.ti.com 11-Oct-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant LM5033MM/NOPB VSSOP DGS 10 1000 178.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 LM5033MMX/NOPB VSSOP DGS 10 3500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 LM5033SD/NOPB WSON DPR 10 1000 178.0 12.4 4.3 4.3 1.3 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 11-Oct-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LM5033MM/NOPB VSSOP DGS 10 1000 210.0 185.0 35.0 LM5033MMX/NOPB VSSOP DGS 10 3500 367.0 367.0 35.0 LM5033SD/NOPB WSON DPR 10 1000 210.0 185.0 35.0 LM5033SDX/NOPB WSON DPR 10 4500 367.0 367.0 35.
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MECHANICAL DATA DPR0010A SDC10A (Rev A) www.ti.
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