MOTOROLA MC33368DR2, MC33368P, MC33368D Datasheet

MC33368

High V oltage Gr eenLine



Power Factor Controller

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 VCC supply voltage and a CMOS driver for driving MOSFETs. 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 Timer to Initiate Switching

• Restart Delay Timer

16

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P SUFFIX

CASE 648

1

D SUFFIX

1

CASE 751K

A = Assembly Location WL = Wafer Lot YY, Y = Year WW = Work Week

PIN CONNECTIONS

5.0 V

Restart Delay

Voltage FB

Current Sense

Zero Current

116

ref

2 3

Comp

4

Mult

5 6 7

AGnd

8

DIP–16

SO–16

MARKING

DIAGRAMS

16

MC33368P

AWLYYWW

1

16

MC33368D

AWLYWW

1

Line

1514N/C

N/C Frequency Clamp

13 12

V

CC

11

Gate

10

PGnd

9

LEB

 Semiconductor Components Industries, LLC, 2000

April, 2000 – Rev. 4

(Top View)

13 12

SO–16 DIP–16

11 10

9

Line

Frequency Clamp V

CC

Gate PGnd LEB

5.0 V

Restart Delay

Voltage FB

Comp

Mult

Current Sense

Zero Current

AGnd

116

ref

2 3 4 5 6 7 8

(Top View)

ORDERING INFORMATION

Device Package Shipping

MC33368D SO–16 48 Units/Rail MC33368DR2 SO–16 2500 Tape & Reel MC33368P DIP–16

1 Publication Order Number:

25 Units/Rail

MC33368/D

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

PWM

This device contains 240 active transistors.

S S

R

Q

UVLO

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, Voltage 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

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MC33368

Á

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

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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 V ariation Over Line, Load and Temperature Maximum Output Current Reference Undervoltage Lockout Threshold

ZERO CURRENT DETECTOR

Input Threshold Voltage (Vin Increasing) Hysteresis (Vin Decreasing) Delay to Output

CURRENT SENSE COMPARATOR

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

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V

= 5.0 V)

Mult

Delay to Output (V

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(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

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Frequency Clamp Capacitor Reset Current (VFC = 0.5 V)

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Frequency Clamp Disable Voltage

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Symbol Min Typ Max Unit

I

IB

V

IO

g

m

I

O

I

O

ÁÁÁ

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

V

H

T

pd

I

IB

V

IO

V

th(max)

ÁÁÁ

t

PHL(in/out)

ÁÁÁ

V

th(FC)

ÁÁÁ

I

reset

ÁÁÁ

V

DFC

ÁÁÁ

– –

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

100

–

– –

1.3

ÁÁÁ

50

ÁÁÁ

1.9

ÁÁÁ

0.5

ÁÁÁ

–

ÁÁÁ

V

to

th(M)

(V

+ 2.0)

th(M)

ÁÁÁ

5.0

5.0 –

10

4.5

1.2

200 127

0.2

4.0

1.5

ÁÁÁ

270

ÁÁÁ

2.0

ÁÁÁ

1.7

ÁÁÁ

7.3

ÁÁÁ

1.0 50 80 30

30

Á

1.1 V

–1.0

2.4

Á

5.05 100 100

5.2

1.4

300

1.0 50

1.8

Á

425

Á

2.1

Á

4.0

Á

8.0

Á

FB

–

– –

–

µA

mV

µmho

µA

Á

V

ns

µA

V V

Á

V mV mV

V mA

V

V mV

ns

µA

mV

V

Á

ns

Á

V

Á

mA

Á

V

Á

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MC33368

Á

ELECTRICAL CHARACTERISTICS (continued) (V

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

CC

Characteristic UnitMaxTypMinSymbol

DRIVE OUTPUT

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

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= 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 Line Operating Current (VCC = V

Line

th(on)

= 50 V)

, V

= 50 V) I

Line

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

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

Line

= 500 V)

R

OH

R

OL

ÁÁÁ

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 OP

I

CC

ÁÁÁ

I

Line

4.0

ÁÁÁ

– – –

–

1.0

100

11.5

7.0 –

180

1.5

3.1

5.0

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

20 20

Á

200 200

0.25

0.5

2.75 500

14.5

10

–

800

3.0

7.1

25

3.0 12.9 20 mA –

ÁÁÁ

– –

5.3

ÁÁÁ

3.0 30

8.5

Á

–

80

Ω

Á

ns ns

V

µA

V

mV

V V V

µs

V

mA

Á

µA

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MC33368

)

T

AN

ON

U

TAN

E

(

mho)

OLTAGE

EE

A

T

E

OL

U

ENT

EN

E

P

N

6

T

E

OL

(

)

5

V

1.6

D

1.4

SH

1.2

HR

1.0

I

0.8

S

0.6

S

0.4

RR

0.2

, C

CS

0

V

–0.2

16

D∆ SH

12

HR CK

8.0

DB F

4.0

CHANGE (mV)

VCC = 14 V TA = 25°C

V

= 4.0 V

Pin 4

= 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 1. Current Sense Input Threshold

versus Multiplier Input

VCC = 14 V

= 3.0 V

= 2.75 V

= 2.5 V

= 2.25 V = 2.0 V

0.08

0.07

0.06

0.05

0.04

0.03

0.02

0.01

, CURRENT SENSE PIN 6 THRESHOLD (V

CS

0

V

–0.12

VM, MULTIPLIER PIN 5 INPUT VOLTAGE (V)

V

Pin 4

= 4.0 V

= 3.0 V

= 2.75 V

= 2.5 V

= 2.25 V

= 2.0 V

Figure 2. Current Sense Input Threshold

versus Multiplier Input, Expanded View

FB

110

109

108

VCC = 14 V

0

, V

FB

V

–4.0

–55

–25 0 25 50 75 125100 –25 0 25 50 75 100 12

TA, AMBIENT TEMPERATURE (°C)

107

, OVERVOLTAGE INPUT THRESHOLD (% V )

106

FB(OV)

V

–55

TA, AMBIENT TEMPERATURE (°C)

Figure 3. Reference V oltage versus Temperature Figure 4. Overvoltage Comparator Input

Threshold versus T emperature

100

80

µ

C

60

C D

SC R

, g

40

20

0

m

–20

10

Transconductance

VCC = 14 V VO = 2.0 to 4.0 V RL = 10 kΩ TA = 25°C

100 1.0 k 10 k 100 k 1.0 M 10 M

f, FREQUENCY (Hz)

Figure 5. Error Amplifier Transconductance

Phase

0

30

60

90

120

150 180

6.0 V

4.0 V

2.0 V

0 V

θ, EXCESS PHASE (DEGREES)

–1.0 V

5.0 µs/DIV

Figure 6. Error Amplifier Transient Response

and Phase versus Frequency

VCC = 14 V TA = 25°C

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MC33368

1.80

1.76

1.72

1.68

, QUICKSTART CHARGE VOLTAGE (V)

chg

V

1.64

20

15

10

–55

, QUICKSTART CHARGE CURRENT (mA)

chg

I

500

VCC = 14 V

µ

460

420

380

, WA TCHDOG TIME DELAY ( s)

DLY

t

340

–55

TA, AMBIENT TEMPERATURE (°C)

Figure 8. Watchdog Timer Delay

versus T emperature

6.0 Pulse tested with a 4.0 V peak, 50 kHz square wave through a 22 k resistance into Pin 7.

4.0

VCC = 14 V

Voltage

Current

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

TA, AMBIENT TEMPERATURE (°C)

1.50

1.30

1.10

0.90

0.70

Figure 7. Quickstart Charge Current

versus T emperature

VCC = 14 V CL = 1000 pF TA = 25°C

OUTPUT VOLTAGE (V)

–5.0

1000

, THERMAL RESIST ANCE

JA(t)

θ

R

5.0

°

100

JUNCTION–TO–AIR ( C/W)

10

0.01

CO = 1000 pF Pin 3, 6, 8= Gnd

2.0

, SUPPLY CURRENT (mA)

Pin 5 = 1.0 k to Gnd

CC

TA = 25°C

0

5.0 µs/DIV

I

2.0 0

4.0 6.0 8.0 10 12 14 VCC, SUPPLY VOLTAGE (V)

Figure 9. Drive Output Waveform Figure 10. Supply Current versus

Supply V oltage

0.1 1.0 10 100 t, TIME (s)

OUTPUT VOLTAGE (V)

400

200

Output

Voltage

0

Load

Current

200 ms/DIV

3.0

2.0

1.0 OUTPUT CURRENT (A)

0

Figure 11. Transient Thermal Resistance Figure 12. Low Load Detection

Response Waveform

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