Motorola MC33368P, MC33368D Datasheet

Order this document by MC33368/D

T

25° to +125°C



 

     

The MC33368 is an active power factor controller that functions as a boost preconverter in off–line power supply applications. MC33368 is optimized for low power, high density power supplies requiring a minimum board area, reduced component count and low power dissipation. The narrow body SOIC package provides a small footprint. Integration of the high voltage startup saves approximately 0.7 W of power compared to resistor bootstrapped circuits.

The MC33368 features a watchdog timer to initiate output switching, a one quadrant multiplier to force the line current to follow the instantaneous line voltage a zero current detector to ensure critical conduction operation, a transconductance error amplifier, a current sensing comparator, a 5.0 V reference, an undervoltage lockout (UVLO) circuit which monitors the V supply voltage and a CMOS driver for driving MOSFET s. The MC33368 also includes a programmable output switching frequency clamp. Protection features include an output overvoltage comparator to minimize overshoot, a restart delay timer and cycle–by–cycle current limiting.

• Lossless Off–Line Startup

• Output Overvoltage Comparator

• Leading Edge Blanking (LEB) for Noise Immunity

• Watchdog T imer to Initiate Switching

CC

HIGH VOLTAGE

GREENLINE POWER

FACTOR CONTROLLER

SEMICONDUCTOR

TECHNICAL DATA

16

1

P SUFFIX

PLASTIC PACKAGE

CASE 648

(DIP–16)

16

1

D SUFFIX

PLASTIC PACKAGE

CASE 751K

(SO–16)

• Restart Delay Timer

GreenLine is a trademark of Motorola, Inc.

ORDERING INFORMATION

Operating

Device

MC33368D MC33368P

Temperature Range

–

= –

J

PIN CONNECTIONS

5.0 V

Restart Delay

Voltage FB

Package

°

SO–16

DIP–16

Current Sense

Zero Current

5.0 V

Restart Delay

Voltage FB

Current Sense

Zero Current

116

ref

2 3

Comp

4

Mult

5 6 7

AGnd

8

(Top View)

116

ref

2 3

Comp

4

Mult

5 6 7

AGnd

8

(Top View)

Line N/C

15

N/C

14 13

Frequency Clamp

12

V

11

Gate

10

PGnd

9

LEB

Line

13

Frequency Clamp

12

V

SO–16 DIP–16

11

Gate

10

PGnd

9

LEB

CC

This document contains information on a new product. Specifications and information herein are subject to change without notice.

MOTOROLA ANALOG IC DEVICE DATA

 Motorola, Inc. 1997 Rev 2

1

Restart Delay

FB

Comp

Mult LEB

Current Sense

ZC Det

Restart Delay

Output

Overvoltage

Multiplier/

Error

Amplifier

Current

Sense

WatchdogTimer/

Zero Current Detector

MC33368

Representative Block Diagram

UVLO

PWM

This device contains 240 active transistors.

S S

R

Q

Internal Bias

Generator

Frequency

Clamp

Line

V

CC

V

ref

AGnd

Gate PGnd

Frequency Clamp

MAXIMUM RATINGS (T

Power Supply Voltage (Transient) Power Supply Voltage (Operating) Line Voltage Current Sense, Multiplier, Compensation, V oltage

Feedback, Restart Delay and Zero Current Input

Voltage LEB Input, Frequency Clamp Input Zero Current Detect Input Restart Diode Current Power Dissipation and Thermal Characteristics

P Suffix, Plastic Package Case 648

Maximum Power Dissipation @ TA = 70°C P Thermal Resistance, Junction–to–Air R

Power Dissipation and Thermal Characteristics

D Suffix, Plastic Package Case 751K

Maximum Power Dissipation @ TA = 70°C P

Thermal Resistance, Junction–to–Air R Operating Junction Temperature Operating Ambient Temperature Storage Temperature Range

NOTE: ESD data available upon request.

= 25°C, unless otherwise noted.)

A

Rating

Symbol Value Unit

V

V V

V

T

CC CC

Line

in1

in2

I

in

I

in

D

θJA

D

θJA

T

J

T

A

stg

20 16

500

–1.0 to +10 V

–1.0 to +20

±5.0

5.0

1.25 mW 100 °C/W

450 mW 178 °C/W

150

–25 to +125 –55 to +150

V V V

V mA mA

°C °C °C

2

MOTOROLA ANALOG IC DEVICE DATA

MC33368

ÁÁÁ

ÁÁÁ ÁÁÁ

Á

ÁÁÁ

Á

ÁÁÁ

Á

ÁÁÁ

Á

ÁÁÁ ÁÁÁ

ÁÁÁ

ÁÁÁ ÁÁÁ

Á

ÁÁÁ

Á

ÁÁÁ

Á

ÁÁÁ

Á

ÁÁÁ

Á

ÁÁÁ

Á

ÁÁÁ

Á

ÁÁÁ

ELECTRICAL CHARACTERISTICS (V

= 14.5 V, for typical values TA = 25°C, for min/max values TJ = –25 to +125°C)

CC

Characteristic

ERROR AMPLIFIER

Input Bias Current (VFB = 5.0 V) Input Offset Voltage (V Transconductance (V Output Source (VFB = 4.6 V, V

Output Sink (VFB = 5.4 V, V

БББББББББББББББ

Comp

= 3.0 V)

Comp

= 3.0 V)

OVERVOLTAGE COMPARATOR

Voltage Feedback Input Threshold Propagation Time to Output

MULTIPLIER

Input Bias Current, V Input Threshold, V

Mult

Comp

(VFB = 0 V)

Dynamic Input Voltage Range

Multiplier Input V Compensation V

Multiplier Gain (V

ȡ

K

+

ȧ

V

Ȣ

Mult

= 0.5 V, V

Mult

VCSThreshold

ǒ

V

–V

Comp

th(M)

Comp

ȣ ȧ

Ǔ

Ȥ

= V

+ 1.0 V) K 0.25 0.51 0.75 1/V

th(M)

VOLTAGE REFERENCE

Voltage Reference (IO = 0 mA, TJ = 25°C) Line Regulation (VCC = 10 V to 16 V) Load Regulation (IO = 0 – 5.0 mA) Total Output Variation Over Line, Load and Temperature Maximum Output Current Reference Undervoltage Lockout Threshold

ZERO CURRENT DETECTOR

Input Threshold Voltage (Vin Increasing)

БББББББББББББББ

Hysteresis (Vin Decreasing)

БББББББББББББББ

Delay to Output

БББББББББББББББ

CURRENT SENSE COMPARATOR

Input Bias Current (VCS = 0 to 2.0 V) Input Offset Voltage (V Maximum Current Sense Input Threshold (V

БББББББББББББББ

V

= 5.0 V)

Mult

Delay to Output (V

БББББББББББББББ

(VCS = 0 to 5.0 V Step, CL = 1.0 nF)

LEB

= –0.2 V)

Mult

= 12 V, V

Comp

= 5.0 V, V

= 5.0 V,

= 5.0 V)

Mult

FREQUENCY CLAMP

Frequency Clamp Input Threshold Frequency Clamp Capacitor Reset Current (VFC = 0.5 V) Frequency Clamp Disable Voltage

Symbol Min Typ Max Unit

I

IB

V

IO

g

m

I

O

I

ÁÁÁ

O

V

FB(OV)

T

P

I

IB

V

th(M)

Mult

Comp

ÁÁÁ

V

ref

Reg

line

Reg

load

V

ref

I

O

V

th

V

th

ÁÁÁ

V

H

ÁÁÁ

T

pd

ÁÁÁ

I

IB

V

IO

V

th(max)

ÁÁÁ

t

PHL(in/out)

ÁÁÁ

V

th(FC)

I

reset

V

DFC

– –

30

9.0

ÁÁÁ

1.07 V

FB

–

1.8

0

2.0 51

17.5

ÁÁÁ

1.084 V

FB

705

–0.2

2.1

0 to 2.5 0 to 3.5 –

V

to

th(M)

(V

+ 1.0)

th(M)

ÁÁÁ

4.95 – –

4.8

5.0 –

1.0

ÁÁÁ

100

ÁÁÁ

–

ÁÁÁ

– –

1.3

ÁÁÁ

50

ÁÁÁ

1.9

0.5 –

V

th(M)

(V

+ 2.0)

th(M)

ÁÁÁ

5.0

5.0 –

10

4.5

1.2

ÁÁÁ

200

ÁÁÁ

127

ÁÁÁ

0.2

4.0

1.5

ÁÁÁ

270

ÁÁÁ

2.0

1.7

7.3

to

1.0 50 80 30

30

ÁÁ

1.1 V –

–1.0

2.4

–

ÁÁ

5.05 100 100

5.2 – –

1.4

ÁÁ

300

ÁÁ

–

ÁÁ

1.0

50

1.8

ÁÁ

425

ÁÁ

2.1

4.0

8.0

ÁÁ

FB

ÁÁ

µA

mV

µmho

µA

V

ns

µA

V V

V mV mV

V mA

V

V mV

ns

µA

mV

V

ns

V mA

V

MOTOROLA ANALOG IC DEVICE DATA

3

MC33368

ÁÁÁ

Á

ÁÁÁ

Á ÁÁÁ ÁÁÁ

ÁÁÁ

ÁÁÁ ÁÁÁ

ÁÁÁ

ÁÁÁ ÁÁÁ

ÁÁÁ

Á

ÁÁÁ

Á

ÁÁÁ

Á

ÁÁÁ

ELECTRICAL CHARACTERISTICS

(continued) (VCC = 14.5 V, for typical values TA = 25°C, for min/max values TJ = –25 to +125°C)

Characteristic UnitMaxTypMinSymbol

DRIVE OUTPUT

Source Resistance (Current Sense = 0 V, V Sink Resistance (Current Sense = 3.0 V, V

БББББББББББББББ

= VCC – 1.0 V)

Gate

= 1.0 V)

Gate

Output Voltage Rise T ime (25% – 75%) (CL = 1.0 nF) Output Voltage Fall Time (75% – 25%) (CL = 1.0 nF) Output Voltage in Undervoltage (VCC = 7.0 V, I

Sink

= 1.0 mA)

LEADING EDGE BLANKING

Input Bias Current Threshold (as Offset from VCC) (V Hysteresis (V

Decreasing)

LEB

Increasing)

LEB

UNDERVOLTAGE LOCKOUT

Startup Threshold (VCC Increasing) Minimum Operating Voltage After Turn–On (VCC Decreasing) Hysteresis

TIMER

Watchdog Timer Restart Timer Threshold Restart Pin Output Current (V

restart

= 0 V, V

= 5.0 V)

ref

TOTAL DEVICE

Line Startup Current (VCC = 0 V, V

БББББББББББББББ

Line Operating Current (VCC = V VCC Dynamic Operating Current (50 kHz, CL = 1.0 nF)

БББББББББББББББ

VCC Static Operating Current (IO = 0) Line Pin Leakage (V

Line

= 500 V)

Line

th(on)

= 50 V) , V

= 50 V) I

Line

R

OH

R

ÁÁÁ

OL t

r

t

f

V

O(UV)

I

bias

V

LEB

V

H

V

th(on)

V

Shutdown

V

H

t

DLY

V

th(restart)

I

restart

I

SU

ÁÁÁ

OP

I

CC

ÁÁÁ

I

Line

4.0

ÁÁÁ

– – –

–

1.0

100

11.5

7.0 –

180

1.5

3.1

5.0

ÁÁÁ

8.6

7.2

ÁÁÁ

55 70

0.01

0.1

2.25 270

13

8.5

4.5

385

2.3

5.2

16

ÁÁÁ

20 20

ÁÁ

200 200

0.25

0.5

2.75 500

14.5

10

–

800

3.0

7.1

25

ÁÁ

3.0 12.9 20 mA –

ÁÁÁ

– –

5.3

ÁÁÁ

3.0 30

8.5

ÁÁ

–

80

Ω

ÁÁ

ns ns

V

µA

V

mV

V V V

µs

V

mA

ÁÁ

mA

ÁÁ

µA

4

MOTOROLA ANALOG IC DEVICE DATA

MC33368

Figure 1. Current Sense Input Threshold

versus Multiplier Input

1.6

, CURRENT SENSE PIN 6 THRESHOLD (V) V

CS

1.4

1.2

1.0

0.8

0.6

0.4

0.2 0

–0.2

VCC = 14 V TA = 25

V

= 4.0 V

Pin 4

°

C

= 3.75 V = 3.5 V

= 3.25 V

0.6 1.4 2.2 3.0 –0.06 0 0.06 0.12 0.20

VM, MULTIPLIER PIN 5 INPUT VOLTAGE (V)

Figure 3. Reference V oltage versus Temperature

16

12

= 3.0 V

= 2.75 V

= 2.5 V

= 2.25 V = 2.0 V

VCC = 14 V

, CURRENT SENSE PIN 6 THRESHOLD (V)

0.08

0.07

0.06

0.05

0.04

0.03

0.02

0.01

CS

FB

Figure 2. Current Sense Input Threshold

versus Multiplier Input, Expanded View

V

= 4.0 V

Pin 4

0

–0.12

VM, MULTIPLIER PIN 5 INPUT VOLTAGE (V)

Figure 4. Overvoltage Comparator Input

Threshold versus T emperature

110

109

= 3.0 V

= 2.75 V

= 2.5 V

= 2.25 V

= 2.0 V

VCC = 14 V

8.0

4.0

CHANGE (mV)

0

, VOLTAGE FEEDBACK THRESHOLD

FB

V

∆

–4.0

–55

–25 0 25 50 75 125100 –25 0 25 50 75 100 125

TA, AMBIENT TEMPERATURE (°C)

Figure 5. Error Amplifier Transconductance

and Phase versus Frequency

100

80

µ

60

40

20

, TRANSCONDUCTANCE ( mho)

0

m

g

–20

10

Transconductance

VCC = 14 V VO = 2.0 to 4.0 V

Ω

RL = 10 k TA = 25°C

100 1.0 k 10 k 100 k 1.0 M 10 M

f, FREQUENCY (Hz)

Phase

108

107

, OVERVOL TAGE INPUT THRESHOLD (% V ) V

106

–55

FB(OV)

V

Figure 6. Error Amplifier Transient Response

0

30

60

90

120

150 180

6.0 V

4.0 V

2.0 V

0 V

, EXCESS PHASE (DEGREES)

θ

–1.0 V

TA, AMBIENT TEMPERATURE (

5.0 µs/DIV

°

C)

VCC = 14 V TA = 25

°

C

MOTOROLA ANALOG IC DEVICE DATA

5