Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - DC/DC voltage regulator Boost, Flyback, Forward converter, SEPIC SOIC 8

VIN

RT GND

LM5001

VCC

COMP

+12V to +36V +48V

LM5001

www.ti.com

SNVS484E –JANUARY 2007–REVISED MARCH 2013

LM5001 High Voltage Switch Mode Regulator

Check for Samples: LM5001

FEATURES

DESCRIPTION

The LM5001 high voltage switch mode regulator

• Integrated 75 Volt N-Channel MOSFET

features all of the functions necessary to implement

• Ultra-Wide Input Voltage Range from 3.1V to

efficient high voltage Boost, Flyback, SEPIC and

75V

Forward converters, using few external components.

• Integrated High Voltage Bias Regulator

This easy to use regulator integrates a 75 Volt N-

Channel MOSFET with a 1 Amp peak current limit.

• Adjustable Output Voltage

Current mode control provides inherently simple loop

• 1.5% Output Voltage Accuracy

compensation and line-voltage feed-forward for

• Current Mode Control with Selectable

superior rejection of input transients. The switching

Compensation

frequency is set with a single resistor and is

programmable up to 1.5MHz. The oscillator can also

• Wide Bandwidth Error Amplifier

be synchronized to an external clock. Additional

• Integrated Current Sensing and Limiting

protection features include: current limit, thermal

• Integrated Slope Compensation

shutdown, under-voltage lockout and remote

shutdown capability. The device is available in both

• 85% Maximum Duty Cycle Limit

SOIC-8 and WSON-8 packages.

• Single Resistor Oscillator Programming

• Oscillator Synchronization Capability

Packages

• Enable / Undervoltage Lockout (UVLO) Pin

• SOIC-8

• Thermal Shutdown

• WSON-8 (4mm x 4mm)

Typical Application Circuit

Figure 1. Boost Regulator Application Schematic

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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LM5001 www.ti.com SNVS484E – JANUARY 2007 – REVISED MARCH 2013 LM5001 High Voltage Switch Mode Regulator Check for Samples: LM5001 FEATURES DESCRIPTION • • The LM5001 high voltage switch mode regulator features all of the functions necessary to implement efficient high voltage Boost, Flyback, SEPIC and Forward converters, using few external components. This easy to use regulator integrates a 75 Volt NChannel MOSFET with a 1 Amp peak current limit.
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LM5001 SNVS484E – JANUARY 2007 – REVISED MARCH 2013 www.ti.com Connection Diagram SW 1 8 EN VIN 2 7 COMP VCC 3 6 FB GND 4 5 RT COMP 1 EN 2 8 FB 7 RT EP Figure 2. Top View SOIC-8 Package SW 3 6 GND VIN 4 5 VCC Figure 3. Top View WSON-8 Package PIN DESCRIPTIONS Pin SOIC WSON 1 3 2 4 Name Description Application Information SW Switch pin The drain terminal of the internal power MOSFET. VIN Input supply pin Nominal operating range: 3.1V to 75V.
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LM5001 www.ti.com SNVS484E – JANUARY 2007 – REVISED MARCH 2013 Absolute Maximum Ratings (1) (2) VIN to GND 76V SW to GND (Steady State) -0.3V to 76V VCC, EN to GND 14V COMP, FB, RT to GND -0.3V to 7V Maximum Junction Temperature 150°C −65°C to +150°C Storage Temperature ESD Rating (3) (1) (2) (3) Human Body Model 2kV Absolute maximum ratings are limits beyond which damage to the device may occur.
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LM5001 SNVS484E – JANUARY 2007 – REVISED MARCH 2013 www.ti.com Electrical Characteristics (continued) Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the junction temperature (TJ) range of -40°C to +125°C. Minimum and Maximum limits are ensured through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. VVIN = 10V, RRT = 48.7kΩ unless otherwise stated(1).
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LM5001 www.ti.com SNVS484E – JANUARY 2007 – REVISED MARCH 2013 Typical Performance Characteristics Efficiency, Boost Converter VFB vs Temperature Figure 4. Figure 5. IQ (non-switching) vs VIN VCC vs VIN Figure 6. Figure 7. RDS(ON) vs VCC RDS(ON) vs Temperature Figure 8. Figure 9.
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LM5001 SNVS484E – JANUARY 2007 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) 6 ILIM vs VCC ILIM vs VCC vs Temperature Figure 10. Figure 11. FSW vs RRT FSW vs Temperature Figure 12. Figure 13. FSW vs VCC IEN vs VVIN vs Temperature Figure 14. Figure 15.
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LM5001 www.ti.com SNVS484E – JANUARY 2007 – REVISED MARCH 2013 Block Diagram HV-LDO VIN VCC +6.9V 6 PA Disable 0.45V EN + - REFERENCE +5V GENERATOR 1.26V Disable SHUTDOWN + 1.26V STANDBY + VCC 2.8V UVLO + - ENABLE THERMAL STANDBY (165oC) ENABLE RT OSCILLATOR WITH SYNC CAPABILITY SW CLK MAX DUTY ENABLE RAMP SLOPE COMP RAMP 450 mV VCC DRIVER 0 RAMP + CS × 0.7 +5V CLK 1.26V S 5k + - FB Q PWM R 1.3V 1.
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LM5001 SNVS484E – JANUARY 2007 – REVISED MARCH 2013 www.ti.com The LM5001 has dedicated protection circuitry to protect the IC from abnormal operating conditions. Cycle-bycycle current limiting prevents the power MOSFET current from exceeding 1A. This feature can also be used to soft-start the regulator. Thermal Shutdown circuitry holds the driver logic in reset when the die temperature reaches 165°C, and returns to normal operation when the die temperature drops by approximately 20°C.
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LM5001 www.ti.com SNVS484E – JANUARY 2007 – REVISED MARCH 2013 Enable / Standby The LM5001 contains a dual level Enable circuit. When the EN pin voltage is below 450 mV, the IC is in a low current shutdown mode with the VCC LDO disabled. When the EN pin voltage is raised above the shutdown threshold but below the 1.26V standby threshold, the VCC LDO regulator is enabled, while the remainder of the IC is disabled. When the EN pin voltage is raised above the 1.
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LM5001 SNVS484E – JANUARY 2007 – REVISED MARCH 2013 www.ti.com Current Amplifier and Slope Compensation The LM5001 employs peak current mode control which also provides a cycle-by-cycle over current protection feature. An internal 50 mΩ current sense resistor measures the current in the power MOSFET source. The sense resistor voltage is amplified 30 times to provide a 1.5V/A signal into the current limit comparator.
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LM5001 www.ti.com SNVS484E – JANUARY 2007 – REVISED MARCH 2013 VPWR 10 VIN LM5001 0.1 PF Figure 17. Input Transient Protection SW PIN Attention must be given to the PC board layout for the SW pin which connects to the power MOSFET drain. Energy can be stored in parasitic inductance and capacitance which cause switching spikes that negatively effect efficiency, and conducted and radiated emissions.
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LM5001 SNVS484E – JANUARY 2007 – REVISED MARCH 2013 VPWR www.ti.com LM5001 VIN 6 PA R1 1.26V Disable PWM Controller EN 0.45V R2 Disable VCC Regulator Figure 18. Basic EN (UVLO) Configuration Remote configuration of the controller’s operational modes can be accomplished with open drain device(s) connected to the EN pin as shown in Figure 19. A MOSFET or an NPN transistor connected to the EN pin can force the regulator into the low power ‘off’ state.
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LM5001 www.ti.com SNVS484E – JANUARY 2007 – REVISED MARCH 2013 SOFTSTART Soft-start (SS) can be implemented with an external capacitor connected to COMP through a diode as shown in Figure 20. The COMP discharge MOSFET conducts during Shutdown and Standby modes to keep the COMP voltage below the PWM offset (1.3V), which inhibits PWM pulses. The error amplifier will attempt to raise the COMP voltage after the EN pin exceeds the 1.26V standby threshold.
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LM5001 SNVS484E – JANUARY 2007 – REVISED MARCH 2013 www.ti.com Application Circuit Examples The following schematics present examples of a Non-Isolated Flyback, Isolated Flyback, Boost, 24V SEPIC and a 12V Automotive range SEPIC converters utilizing the LM5001 switching regulator. NON-ISOLATED FLYBACK The Non-Isolated Flyback converter (Figure 21) utilizes the internal voltage reference for the regulation setpoint. The output is +5V at 1A while the input voltage can vary from 16V to 42V.
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LM5001 www.ti.com SNVS484E – JANUARY 2007 – REVISED MARCH 2013 T1 VCC VIN = 16V ± 42V D1 LPRI = 160 PH 8:3:2 D2 VOUT = 5V C1 4.7 PF IOUT = 1A C4 100 PF C5 220 pF R1 60.4k EN R2 6.04k C2 100 pF R3 52.3k C6 4700 pF LM5001 VIN EN RT GND SW COMP FB VCC R5 10.2k R4 13.0k VCC C3 1 PF R6 3.40k R7 100k C7 10 PF SYNC Figure 21. Non-Isolated Flyback T1 VCC VIN = 16V ± 42V D1 LPRI = 160 éH 8:3:2 D2 VOUT = 5V C1 4.7 éF R6 47 C4 1 éF R2 6.04k R3 52.3k VIN EN RT GND LM5001 R1 60.
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LM5001 SNVS484E – JANUARY 2007 – REVISED MARCH 2013 www.ti.com L1 470 PH VIN = 16V ± 48V C3 10 PF C1 4.7 éF D2 L2 470 PH C6 22éF C4 150 pF R1 60.4k R3 52.3k VIN EN RT GND C5 0.015 PF LM5001 R2 6.04k VOUT = 24V IOUT = 250 mA SW COMP FB VCC R4 11.5k R5 11.5k R6 634 C2 1 PF Figure 24. 24V SEPIC L1 100 PH VIN = 3.1V ± 60V C3 4.7 PF C1 2.2 éF D2 L2 100 PH VOUT = 12V IOUT = 50 mA C6 22 éF C4 150 pF R1 15.8k C5 0.015 PF LM5001 NC VIN EN RT GND SW COMP FB VCC C2 1 PF R2 11.
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LM5001 www.ti.com SNVS484E – JANUARY 2007 – REVISED MARCH 2013 REVISION HISTORY Changes from Revision D (March 2013) to Revision E • 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 1-Nov-2013 (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line.
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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 LM5001MAX/NOPB SOIC D 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.0 Q1 LM5001SD WSON NGT 8 1000 178.0 12.4 4.3 4.3 1.3 8.0 12.0 Q1 LM5001SD/NOPB WSON NGT 8 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) LM5001MAX/NOPB SOIC D 8 2500 367.0 367.0 35.0 LM5001SD WSON NGT 8 1000 210.0 185.0 35.0 LM5001SD/NOPB WSON NGT 8 1000 210.0 185.0 35.0 LM5001SDE/NOPB WSON NGT 8 250 210.0 185.0 35.0 LM5001SDX/NOPB WSON NGT 8 4500 367.0 367.0 35.
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MECHANICAL DATA NGT0008A SDC08A (Rev A) www.ti.
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