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UC1620JP

更新时间：2024-12-03 13:11:20

品牌：TI

描述：BRUSHLESS DC MOTOR CONTROLLER, 2.5A, CDIP24

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UC1620JP 概述

BRUSHLESS DC MOTOR CONTROLLER, 2.5A, CDIP24 运动控制电子器件

UC1620JP 规格参数

生命周期：	Obsolete	包装说明：	DIP,
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.84
模拟集成电路 - 其他类型：	BRUSHLESS DC MOTOR CONTROLLER	JESD-30 代码：	R-GDIP-T24
功能数量：	1	端子数量：	24
最高工作温度：	125 °C	最低工作温度：	-55 °C
最大输出电流：	2.5 A	封装主体材料：	CERAMIC, GLASS-SEALED
封装代码：	DIP	封装形状：	RECTANGULAR
封装形式：	IN-LINE	认证状态：	Not Qualified
最大供电电压 (Vsup)：	40 V	最小供电电压 (Vsup)：	8 V
标称供电电压 (Vsup)：	20 V	表面贴装：	NO
技术：	BIPOLAR	温度等级：	MILITARY
端子形式：	THROUGH-HOLE	端子位置：	DUAL
Base Number Matches：	1

UC1620JP 数据手册

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UC1620

UC3620

Switchmode Driver for 3- Brushless DC Motors

DESCRIPTION

FEATURES

•

2A Continuous, 3A Peak Output

Current

The UC3620 is a brushless DC motor driver capable of decoding and

driving all 3 windings of a 3-phase brushless DC motor. In addition, an

on-board current comparator, oscillator, and high gain Op-Amp provide

all necessary circuitry for implementing a high performance, chopped

mode servo amplifier. Full protection, including thermal shutdown,

pulse-by-pulse current limiting, and under-voltage lockout aid in the

simple implementation of reliable designs. Both conducted and radiated

EMI have been greatly reduced by limiting the output dv/dt to 150V/µs

for any load condition.

•

8V to 40V Operation

Internal High Gain Amplifier for

Velocity Control Applications

•

TTL Compatible Hall Inputs

Mask Programmable Decode Logic

Pulse-by-Pulse Current Limiting

Internal Thermal Shutdown Protection

Under-Voltage Lockout

The UC1620SP is characterized for operation over the full military tem-

perature range of -55°C to +125°C, while the UC3620SP is charac-

terized for 0°C to +70°C.

Available in SP Hermetic Package

BLOCK DIAGRAM

3/97

UC1620

UC3620

ABSOLUTE MAXIMUM RATINGS (Note 1)

Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V

Output Current, Source or Sink

CONNECTION DIAGRAMS

SP Hermetic Power DIL

Non-Repetitive (t = 100µsec), lo . . . . . . . . . . . . . . . . . . . . 3A

Repetitive (80% on - 20% off; tON = 10ms) . . . . . . . . . . 2.5A

DC Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2A

Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +Vcc

Logic Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +Vcc

Total Power Dissipation (at TCASE = 75° C)

for SP Package (Note 2). . . . . . . . . . . . . . . . . . . . . . . . . . 15W

Storage Temperature . . . . . . . . . . . . . . . . . . . . -65°C to +150°C

Operating Junction Temperature . . . . . . . . . . . -55°C to +150°C

Note 1: All voltages are with respect to ground. Currents are

positive into, negative out of the specified terminal.

Note 2: Consult Packaging Section of Databook for thermal

limitations and considerations of package.

Unless otherwise stated, these specifications apply for TA = 0°C to 70°C for 3620; TA

= 55°C to +125°C for UC1620; VCC = 20V, RT = 20V, RT = 10k, CT = -2.2nF. TA=TJ.

ELECTRICAL CHARACTERISTICS:

PARAMETER

TEST CONDITIONS

UC3620

TYP

UC1620

TYP

UNIT

MIN

MAX

MIN

MAX

Error Amplifier Section

Input Offset Voltage

Input Bias Current

1.5

-.25

-2.0

250

1.5

-.25

-2.0

250

µA

Input Offset Current

Common Mode Range

Open Loop Gain

Vcc = 8V to 40V

∆VCOMP = 1V to 4V

VIN-2

100

0.8

100

0.8

Unity Gain Bandwidth

Output Sink Current

Output Source Current

Current Sense Section

Input Bias Current

TJ = 25°C, Note 2

VCOMP = 1V

MHz

VCOMP = 4V

-2.0

0.5

0.2

1.0

-5

-2.0

0.5

0.2

1.0

-5

µA

Internal Clamp

.425

.180

.575

.220

1.2

.405

.170

.75

.595

.230

1.25

Divider Gain

V/V

Internal Offset Voltage

Timing Section

Output Off Time

5.0

2.0

5.0

2.0

µs

Upper Mono Threshold

Lower Mono Threshold

Decoder Section

High-Level Input Voltage

Low-Level Input Voltage

High-Level Input Current

Low-Level Input Current

Output Section

2.2

-10

2.5

-10

0.8

µA

Output Leakage Current

VF1 Schottky Diode

VF1 Substrate Diode

Total Output Voltage Drop

VCC = 40V

IO = 2A

500

2.0

3.0

3.6

1500

2.0

µA

1.5

2.2

3.0

1.5

2.2

3.0

IO = 2A

3.0

IO = 2A, Note 3

3.6

UC1620

UC3620

Unless otherwise stated, these specifications apply for TA = 0°C to 70°C for 3620; TA

= 55°C to +125°C for UC1620; VCC = 20V, RT = 20V, RT = 10k, CT = -2.2nF. TA=TJ.

ELECTRICAL CHARACTERISTICS:

PARAMETER

TEST CONDITIONS

UC3620

TYP

UC1620

TYP

UNIT

MIN

MAX

MIN

MAX

Output Section (cont.)

Output Rise Time

Output Fall Time

RL = 44Ω

150

RL = 44Ω

Under Voltage Lockout

Startup Threshold

8.0

Threshold Hysteresis

Thermal Shutdown

Junction Temperature

Total Standby Current

Supply Current

0.5

Note 2

150

180

150

180

°C

Note 2: These parameters, although guaranteed over the recommended operating conditions, are not 100% tested in production.

Note 3: The total voltage drop is defined as the sum of both top and bottom side driver.

Hall lines require pull-up resistors.

TABLE 1

STEP FWD/ Ha Hb Hc

REV

AOUT

BOUT

COUT

CURRENT SENSING

Referring to Figure 1, emitter current is sensed across RS

and fed back through a low pass filter to the current

sense pin 7. This filter is required to eliminate false trig-

gering of the monostable due to leading edge current

spikes. Actual filter values, although somewhat depend-

ent on external loads, will generally be in the 1kΩ and

1000pF range.

TIMING

An R-C time constant on pin 9 is used by the monostable

to generate a fixed off time at the outputs according to the

formula:

TOFF = .916RTCT

H = HIGH OUTPUT

L = LOW OUTPUT

O = OPEN OUTPUT

As the peak current in the emitters approaches the value

at the minus (-) input of the on-board comparator, the

monostable is triggered, causing the outputs to be turned

CIRCUIT DESCRIPTION

The UC3620 is designed for implementation of a com-

plete 3- brushless DC servo drive using a minimum

number of external components. Below is a functional de-

scription of each major circuit feature.

DECODER

Table 1 shows the decoding scheme used in the UC3620

to decode and drive each of three high current totem pole

output stages. A forward/reverse signal, pin 13, is used to

provide direction. At any point in time, one driver is sour-

cing, one driver is sinking, and the remaining driver is off

or tri-stated. Pulse width modulation is accomplished by

turning the sink driver off during the monostable reset

time, producing a fixed off-time chop mode. Controlled

output rise and fall times help reduce electrical switching

noise while maintaining relatively small switching losses.

Figure 1. Current Sense Filter

UC1620

UC3620

CIRCUIT DESCRIPTION (cont.)

off. On time is determined by the amount of time required

for motor current to increase to the value required to re-

tive (-) input will limit peak current to a maximum value. A

fixed 0.5V internal clamp has been included on the

trip the monostable. A timing sequence of these events is UC3620, and any current spike in the output which gen-

shown in Figure 2.

erates a sensed voltage greater than 0.5V will immedi-

ately shut down the outputs. Actual peak current values

may be programmed by selecting the appropriate value of

RS according to the formula:

0.5

RS =

ICURRENTLIMIT

ERROR AMPLIFIER LIMIT

A high performance, on-board error amplifier is included

to facilitate implementing closed loop motor control. Error

voltage generation and loop compensation are easily ac-

complished by appropriately configuring the gain and

feedback of this amplifier. To provide a larger dynamic sig-

nal range at the output of the error amplifier, a divide by 5

resistor network is used to reduce the error signal level

before applying to the internal comparator. In addition, a

one volt offset has been introduced at the output of the

error amplifier to guarantee control down to zero current

in the output stages. Since this offset is divided by the

open loop gain of the feedback loop, it has virtually no ef-

fect on closed loop performance.

Figure 2. Chopped Mode Timing Diagram

CURRENT LIMIT

Since peak current is being controlled at all times by the

internal comparator, a simple voltage clamp at its nega-

tive (-) input will limit peak current to a maximum value. A

fixed 0.5V internal clamp has been included on the

UC3620, and any current spike in the output which gener-

ates a sensed voltage greater than 0.5V will immediately

shut down the outputs. Actual peak current values may be

programmed by selecting the appropriate value of RS ac-

cording to the formula:

PROTECTION FUNCTIONS

Protective functions including under-voltage lockout, peak

current limiting, and thermal shutdown, provide an ex-

tremely rugged device capable of surviving under many

types of fault conditions. Under-voltage lockout guaran-

tees the outputs will be off or tri-slated until V is suffi-

0.5

RS =

cient for proper operation of the chip. Current limiting

limits the peak current for a stalled or shorted motor,

whereas thermal shutdown will tri-state the outputs if a

temperature above 150°C is reached.

ICURRENTLIMIT

Since peak current is being controlled at all times by the

internal comparator, a simple voltage clamp at its nega-

UC1620

UC3620

TYPICAL APPLICATIONS

*Both VCC PWR and VCC LOGIC pins must be connected together when using the SP package.

3- Brushless DC Open Loop Motor Drive

*Both VCC PWR and VCC LOGIC pins must be connected together when using the SP package.

3- Brushless DC Open Loop Motor with Current Limit at 2A.

UC1620

UC3620

*Both VCC PWR and VCC LOGIC pins must be connected together when using the SP package.

Closed Loop Speed Control Servo

UNITRODE CORPORATION

7 CONTINENTAL BLVD. • MERRIMACK, NH 03054

TEL. (603) 424-2410 • FAX (603) 424-3460

PACKAGE OPTION ADDENDUM

www.ti.com

30-Mar-2005

PACKAGING INFORMATION

Orderable Device

Status ⁽¹⁾

Package Package

Pins Package Eco Plan ⁽²⁾Lead/Ball Finish MSL Peak Temp ⁽³⁾

Qty

Type

Drawing

UC1620SP

UC1620SP883B

UC1620SP883C

UC3620SP

OBSOLETE

UTR

TBD

Call TI

UTR

UC3620V

UTR

UC3620VH

UTR

⁽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)

Eco Plan

The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS

no Sb/Br)

please check

http://www.ti.com/productcontent for the latest availability information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined.

Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements

for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered

at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.

Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame

retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

(3)

MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder

temperature.

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accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take

reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on

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information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI

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Addendum-Page 1

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