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FEATURES

DESCRIPTION/ORDERING INFORMATION

UC2625-EP

www.ti.com

.................................................................................................................................................................................................. SLUS802 – MARCH 2008

BRUSHLESS DC MOTOR CONTROLLER

• Controlled Baseline • Drives Power MOSFETs or Power Darlingtons

Directly

– One Assembly Site

• 50-V Open Collector High-Side Drivers

– One Test Site

• Latched Soft Start

– One Fabrication Site

• High-speed Current-Sense Amplifier with Ideal

• Extended Temperature Performance of – 55 ° C

Diode

to 125 ° C

• Pulse-by-Pulse and Average Current Sensing

• Enhanced Diminishing Manufacturing Sources

(DMS) Support • Over-Voltage and Under-Voltage Protection

• Enhanced Product-Change Notification • Direction Latch for Safe Direction Reversal

• Qualification Pedigree

(1)

• Tachometer

(1) Component qualification in accordance with JEDEC and

• Trimmed Reference Sources 30 mA

industry standards to ensure reliable operation over an

• Programmable Cross-Conduction Protection

extended temperature range. This includes, but is not limited

to, Highly Accelerated Stress Test (HAST) or biased 85/85,

• Two-Quadrant and Four-Quadrant Operation

temperature cycle, autoclave or unbiased HAST,

electromigration, bond intermetallic life, and mold compound

life. Such qualification testing should not be viewed as

justifying use of this component beyond specified

performance and environmental limits.

The UC2625 motor controller integrates most of the functions required for high-performance brushless dc motor

control into one package. When coupled with external power MOSFETs or Darlingtons, this device performs

fixed-frequency PWM motor control in either voltage or current mode while implementing closed loop speed

control and braking with smart noise rejection, safe direction reversal, and cross-conduction protection.

Although specified for operation from power supplies between 10 V and 18 V, the UC2625 can control higher

voltage power devices with external level-shifting components. The UC2625 contains fast, high-current push-pull

drivers for low-side power devices and 50-V open-collector outputs for high-side power devices or level shifting

circuitry.

The UC2625 is characterized for operation over the military temperature range of – 55 ° C to 125 ° C.

ORDERING INFORMATION

(1)

ORDERABLE PART TOP-SIDE

PACKAGE

(2)

NUMBER MARKING

PDIP – N UC2625MNEP UC2625EP

– 55 ° C to 125 ° C

SOIC – DW UC2625MDWREP UC2625EP

(1) For the most current package and ordering information, see the Package Option Addendum at the end

of this document, or see the TI website at www.ti.com .

(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging .

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.

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 (25 pages)

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UC2625-EP www.ti.com ..................................................................................................................................................................................................
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UC2625-EP SLUS802 – MARCH 2008 .................................................................................................................................................................................................. www.ti.
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UC2625-EP www.ti.com .................................................................................................................................................................................................. SLUS802 – MARCH 2008 CONNECTION DIAGRAM A.
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UC2625-EP SLUS802 – MARCH 2008 .................................................................................................................................................................................................. www.ti.com ELECTRICAL CHARACTERISTICS Unless otherwise stated, these specifications apply for: TA = 25°C; Pwr VCC = VCC = 12 V; ROSC = 20 kΩ to VREF; COSC = 2 nF; RTACH = 33 kΩ; CTACH = 10 nF; and all outputs unloaded. TA = TJ.
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UC2625-EP www.ti.com .................................................................................................................................................................................................. SLUS802 – MARCH 2008 ELECTRICAL CHARACTERISTICS (continued) Unless otherwise stated, these specifications apply for: TA = 25°C; Pwr VCC = VCC = 12 V; ROSC = 20 kΩ to VREF; COSC = 2 nF; RTACH = 33 kΩ; CTACH = 10 nF; and all outputs unloaded. TA = TJ.
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UC2625-EP SLUS802 – MARCH 2008 .................................................................................................................................................................................................. www.ti.com Block Diagram QUAD SEL 22 RC-OSC 25 PWM IN 26 E/A OUT 27 E/A IN(+) 1 E/A IN (–) 28 SSTART 24 ISENSE 3 S OSC VCC 19 OV-COAST 23 R 0.2 V 2.5 V 250 Ω PUB 16 PUC 11 PWR VCC 14 PDA 13 PDB 12 PDC 15 GND 20 TACH-OUT S 3.
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UC2625-EP www.ti.com .................................................................................................................................................................................................. SLUS802 – MARCH 2008 DEVICE INFORMATION Terminal Functions TERMINAL NAME DIR, SPEED-IN E/A IN(+), E/A IN(–), E/A OUT, PWM IN GND H1, H2, H3 ISENSE1, ISENSE2, ISENSE OV-COAST NO.
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UC2625-EP SLUS802 – MARCH 2008 .................................................................................................................................................................................................. www.ti.com Terminal Functions (continued) TERMINAL NAME PDA, PDB, PDC PUA, PUB, PUC PWR VCC QUAD SEL RC-BRAKE RC-OSC 8 NO.
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UC2625-EP www.ti.com .................................................................................................................................................................................................. SLUS802 – MARCH 2008 Terminal Functions (continued) TERMINAL NAME SSTART TACH-OUT VCC VREF NO. I/O DESCRIPTION 24 Any time that VCC drops below threshold or the sensed current exceeds the over-current threshold, the soft-start latch is set.
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UC2625-EP SLUS802 – MARCH 2008 .................................................................................................................................................................................................. www.ti.com TYPICAL CHARACTERISTICS Oscillator Frequency vs COSC and ROSC Tachometer on Time vs RT and CT 100 ms 1 MHz RT – 500 k RT – 100 k ROSC – 10 k 1 ms On Time Oscillator Frequency 10 ms ROSC – 10 k 100 kHz ROSC – 100 k 10 kHz 1 kHz 100 ms 1 ms 0.001 100 Hz 0.
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UC2625-EP www.ti.com .................................................................................................................................................................................................. SLUS802 – MARCH 2008 TYPICAL CHARACTERISTICS (continued) Soft-Start Discharge Current vs Temperature Current Sense Amplifier Transfer Function vs ISENSE2 – ISENSE1 1.25 3.5 .75 ISENSE – V Soft Start Current – mA 1.00 3 .50 .25 0 -75 -50 -25 0 25 50 75 100 125 2.5 -0.
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UC2625-EP SLUS802 – MARCH 2008 .................................................................................................................................................................................................. www.ti.com APPLICATION INFORMATION Cross Conduction Prevention The UC2625 inserts delays to prevent cross conduction due to overlapping drive signals.
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UC2625-EP www.ti.com .................................................................................................................................................................................................. SLUS802 – MARCH 2008 Power Stage Design The UC2625 is useful in a wide variety of applications, including high-power in robotics and machinery. The power output stages used in such equipment can take a number of forms, according to the intended performance and purpose of the system.
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UC2625-EP SLUS802 – MARCH 2008 .................................................................................................................................................................................................. www.ti.com FIGURE A FIGURE B TO MOTOR TO MOTOR RS RS FIGURE C FIGURE D TO MOTOR TO MOTOR RS RD RS Figure 8. Four Power Stage Designs Table 1.
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UC2625-EP www.ti.com .................................................................................................................................................................................................. SLUS802 – MARCH 2008 For drives where speed is critical, P-channel MOSFETs can be driven by emitter followers as shown in Figure 9. Here, both the level shift NPN and the PNP must withstand high voltages. A zener diode is used to limit gate-source voltage on the MOSFET.
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UC2625-EP SLUS802 – MARCH 2008 .................................................................................................................................................................................................. www.ti.com Figure 11. Power NPN High-Side Driver 16 Submit Documentation Feedback Figure 12.
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UC2625-EP www.ti.com .................................................................................................................................................................................................. SLUS802 – MARCH 2008 Fast High-Side N-Channel Driver with Transformer Isolation A small pulse transformer can provide excellent isolation between the UC2625 and a high-voltage N-Channel MOSFET while also coupling gate drive power.
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UC2625-EP SLUS802 – MARCH 2008 .................................................................................................................................................................................................. www.ti.com Computational Truth Table Table 2 shows the outputs of the gate drive and open collector outputs for given hall input codes and direction signals. Numbers at the top of the columns are pin numbers.
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UC2625-EP www.ti.com ..................................................................................................................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device UC2625MDWREP Package Package Pins Type Drawing SOIC DW 28 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 1000 330.0 32.4 Pack Materials-Page 1 11.35 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 18.67 3.1 16.0 32.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) UC2625MDWREP SOIC DW 28 1000 367.0 367.0 55.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46C and to discontinue any product or service per JESD48B. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.