ON Semiconductor NCP1654 User Manual

Power Factor Controller for Compact and Robust, Continuous Conduction Mode Pre-Converters

NCP1654

The NCP1654 is a controller for Continuous Conduction Mode (CCM) Power Factor Correction step−up pre−converters. It controls the power switch conduction time (PWM) in a fixed frequency mode and in dependence on the instantaneous coil current.

Housed in a SO8 package, the circuit minimizes the number of external components and drastically simplifies the PFC implementation. It also integrates high safety protection features that make the NCP1654 a driver for robust and compact PFC stages like an effective input power runaway clamping circuitry.

Features

• IEC61000−3−2 Compliant

• Average Current Continuous Conduction Mode

• Fast Transient Response

• Very Few External Components

• Very Low Startup Currents (< 75 mA)

• Very Low Shutdown Currents (< 400 mA)

• Low Operating Consumption

• ±1.5 A Totem Pole Gate Drive

• Accurate Fully Integrated 65/133/200 kHz Oscillator

• Latching PWM for cycle−by−cycle Duty−Cycle Control

• Internally Trimmed Internal Reference

• Undervoltage Lockout with Hysteresis

• Soft−Start for Smoothly Startup Operation

• Shutdown Function

• Pin to Pin Compatible with Industry Standard

• This is a Pb−Free Device

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8

1

SO−8

D SUFFIX

CASE 751

MARKING DIAGRAM

8

54Bxx ALYW

G

1

xx = 65, 133 or 200 A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package

PIN CONNECTIONS

Ground

Brown−Out

V

CS

M

1

2

3

4

(Top View)

Driver

8

V

7

CC

Feedback

6

V

5

control

Safety Features

• Inrush Currents Detection

• Overvoltage Protection

• Undervoltage Detection for Open Loop Detection or Shutdown

• Brown−Out Detection

• Soft−Start

• Accurate Overcurrent Limitation

• Overpower Limitation

Typical Applications

• Flat TVs, PC Desktops

• AC Adapters

• White Goods, other Off−line SMPS

March, 2021 − Rev. 6

1 Publication Order Number:

ORDERING INFORMATION

Device Package Shipping

NCP1654BD65R2G 2500 /

NCP1654BD133R2G 2500 /

NCP1654BD200R2G 2500 /

†For information on tape and reel specifications,

including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D.

SO−8

(Pb−Free)

SO−8

(Pb−Free)

SO−8

(Pb−Free)

Tape & Reel

NCP1654/D

†

NCP1654

MAXIMUM RATINGS TABLE

Symbol Pin Rating Value Unit

DRV 8 Output Drive Capability − Source

Output Drive Capability − Sink

V

CC

7 Power Supply Voltage, VCC pin, continuous voltage −0.3, +20 V

7 Transient Power Supply Voltage, duration < 10 ms, IVCC < 10 mA +25 V

Vin 2, 3, 4, 5, 6 Input Voltage −0.3, +10 V

Power Dissipation and Thermal Characteristics D suffix, Plastic Package, Case 751

PD(SO)

R

q

JA

T

Jmax

T

Smax

T

Lmax

(SO)

J

Maximum Power Dissipation @ TA = 70°C Thermal Resistance Junction−to−Air

Operating Junction Temperature Range −40 to +125 °C

Maximum Junction T

emperature

Storage Temperature Range −65 to +150 °C

Lead Temperature (Soldering, 10 s) 300 °C

Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected.

1. This device series contains ESD protection and exceeds the following tests:

Human Body Model (HBM) 2000 V per JEDEC standard JESD22, Method A114E Machine Model (MM) 200 V (except pin#7 which complies 150 V) per JEDEC standard JESD22, Method A115A.

2. This device contains Latch−up Protection and exceeds ±100 mA per JEDEC Standard JESD78.

−1.5 +1.5

450 178

mW

°C/W

150 °C

A

TYPICAL ELECTRICAL CHARACTERISTICS TABLE (V

= 15 V, TJ from −40°C to +125°C, unless otherwise specified) (Note 3)

CC

Symbol Rating Min Typ Max Unit

GATE DRIVE SECTION

R

OH

R

OL

T

r

T

f

Source Resistance @ I

Sink Resistance @ I

= 100 mA − 9.0 20 W

source

= −100 mA − 6.6 18 W

sink

Gate Drive Voltage Rise Time from 1.5 V to 13.5 V (C

Gate Drive Voltage Fall Time from 13.5 V to 1.5 V (C

= 2.2 nF) − 60 − ns

L

= 2.2 nF) − 40 − ns

L

REGULATION BLOCK

V

REF

I

EA

G

EA

IBpin6 Pin 6 Bias Current @ VFB = V

V

control

V

control(max)

V

control(min)

DV

control

V

L / V

OUT

H

L / V

OUT

I

BOOST

Voltage Reference 2.425 2.5 2.575 V

Error Amplifier Current Capability − ±28 − mA

Error Amplifier Gain 100 200 300 mS

REF

−500 − 500 nA

Pin5 Voltage Maximum Control Voltage @ V Minimum Control Voltage @ V

REF

DV

Ratio (V

control

= V

control(max)

Low Detect Thresold / V

OUT

Low Detect Hysteresis / V

OUT

Pin 5 Source Current when (V

− V

= 2 V

FB

= 3 V

FB

control(min)

) 94 95 96 %

REF

) − 0.5 − %

REF

Low Detect) is activated 190 228 260 mA

OUT

2.7

−

3.6

0.6

3.0

−

3.3

CURRENT SENSE BLOCK

V

I

S(OCP)

S

Current Sense Pin Offset Voltage, (ICS = 100 mA) − 10 − mV

Overcurrent Protection Threshold 185 200 215 mA

POWER LIMITATION BLOCK

I

x V

CS

I

CS(OPL1)

I

CS(OPL2)

Overpower Limitation Threshold − 200 − mVA

BO

Overpower Current Threshold (VBO = 0.9 V, VM = 3 V) Overpower Current Threshold (VBO = 2.67 V, VM = 3 V)

186

62

222

75

308 110

PWM BLOCK

Dcycle Duty Cycle Range − 0−97 − %

V

mA

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2

NCP1654

TYPICAL ELECTRICAL CHARACTERISTICS TABLE (V

= 15 V, TJ from −40°C to +125°C, unless otherwise specified) (Note 3)

CC

Symbol UnitMaxTypMinRating

OSCILLATOR / RAMP GENERATOR BLOCK

fsw Switching Frequency

65 kHz 133 kHz 200 kHz

58 120 180

65 133 200

146 220

kHz

72

BROWN−OUT DETECTION BLOCK

V

BOH

BOL

I

IB

Brown−Out Voltage Threshold (rising) 1.22 1.30 1.38 V

Brown−Out Voltage Threshold (falling) 0.65 0.7 0.75 V

Pin 4 Input Bias Current @ VBO = 1 V −500 − 500 nA

CURRENT MODULATION BLOCK

I

M1

I

M2

Multiplier Output Current (V Multiplier Output Current (V

(@ 0  125°C)

control

= V

control(max)

, VBO = 0.9 V, I

(@ −40  125°C)

I

M3

I

M4

Multiplier Output Current (V Multiplier Output Current (V

control control

= V = V

control(min) control(min)

+ 0.2 V, VBO = 0.9 V, I + 0.2 V, VBO = 0.9 V, I

CS

= 25 mA)

CS

= 75 mA)

CS CS

= 25 mA = 75 mA

1.5

−

1.9

4.7

28.1

84.4

8.8

9.8

−

mA

−

OVERVOLTAGE PROTECTION

V

OVP

T

/ V

OVP

Ratio (Overvoltage Threshold / V

REF

Propagation Delay (VFB – 107% V

) 103 105 107 %

REF

) to Drive Low − 500 − ns

REF

UNDERVOLTAGE PROTECTION / SHUTDOWN

V

UVP(on)/VREF

V

UVP(off)/VREF

V

UVP(H)

T

UVP

UVP Activate Threshold Ratio (TJ = 0°C to +105°C) 4 8 12 %

UVP Deactivate Threshold Ratio (TJ = 0°C to +105°C) 6 12 18 %

UVP Lockout Hysteresis − 4 − %

Propagation Delay (VFB < 8% V

) to Drive Low − 500 − ns

REF

THERMAL SHUTDOWN

T

SD

H

SD

Thermal Shutdown Threshold 150 − − °C

Thermal Shutdown Hysteresis − 30 − °C

VCC UNDERVOLTAGE LOCKOUT SECTION

V

CC(on)

V

CC(off)

V

CC(H)

Start−Up Threshold (Undervoltage Lockout Threshold, VCC rising) 9.6 10.5 11.4 V

Disable Voltage after Turn−On (Undervoltage Lockout Threshold, VCC falling) 8.25 9.0 9.75 V

Undervoltage Lockout Hysteresis 1.0 1.5 − V

DEVICE CONSUMPTION

Power Supply Current:

I

STUP

I

CC1

I

CC2

I

STDN

Start−Up (@ VCC = 9.4 V) Operating (@ VCC = 15 V, no load, no switching) Operating (@ VCC = 15 V, no load, switching) Shutdown Mode (@ VCC = 15 V and V

FB

= 0 V)

−

3.7

4.7

300

75

5.0

6.0

400

mA mA mA

mA

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions.

3. The above specification gives the targeted values of the parameters. The final specification will be available once the complete circuit characterization has been performed.

I

V

cs

NOTE:

IM+

4 ǒV

control

* V

BO

control(min)

Ǔ

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3

NCP1654

DETAILED PIN DESCRIPTIONS

Pin Symbol Name Function

1 GND Ground −

2 V

in

3 CS Current Sense

4 V

5 V

6 V

7 V

BO

control

FB

CC

8 DRV Drive Output The high current capability of the totem pole gate drive (±1.5 A) makes it suitable to effectively

Multiplier

Voltage

This pin provides a voltage VM for the PFC duty cycle modulation. The input impedance of the PFC circuits is proportional to the resistor RM externally connected to this pin. The device operates in average current mode if an external capacitor CM is connected to the pin. Otherwise, it operates in peak current mode.

This pin sources a current ICS which is proportional to the inductor current IL. The sense

Input

current I modulation. When ICS goes above 200 mA, OCP is activated and the Drive Output is disabled.

is for overcurrent protection (OCP), overpower limitation (OPL) and PFC duty cycle

CS

Brown−Out / In Connect a resistor network among the rectified input voltage, BO pin, and ground. And connect

a capacitor between BO pin and ground. BO pin detects a voltage signal proportional to the average input voltage.

When VBO goes below V (brown−out), turns off the output driver and keeps it in low state until VBO exceeds V

, the circuit that detects too low input voltage conditions

BOL

BOH

This signal which is proportional to the RMS input voltage Vac is also for overpower limitation (OPL) and PFC duty cycle modulation.

Control Voltage /

Soft−Start

Feed−Back /

Shutdown

The voltage of this pin V external type−2 compensation components to limit the V to achieve near unity power factor.

The device provides no output when V increases slowly (soft−start).

directly controls the input impedance. This pin is connected to

control

< V

control(min)

bandwidth typically below 20 Hz

control

. When it starts operation, the power

This pin receives a feedback signal VFB that is proportional to the PFC circuits output voltage. This information is used for both the output regulation, the overvoltage protection (OVP), and output undervoltage protection (UVP) to protect the system from damage at feedback abnormal situation.

When VFB goes above 105% V When VFB goes below 8% V

Supply Voltage This pin is the positive supply of the IC. The circuit typically starts to operate when V

exceeds 10.5 V and turns off when VCC goes below 9 V. After start−up, the operating range is

, OVP is activated and the Drive Output is disabled.

REF

, the device enters a low−consumption shutdown mode.

REF

CC

9 V up to 20 V.

drive high gate charge power MOSFET.

.

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4

AC

Input

EMI

Filter

NCP1654

V

in

I

IN

+

−

in

L

C

filter

R

SENSE

I

L

I

L

+

C

bulk

Output

Voltage

(V

OUT

)

R

boU

R

Vcontrol

C

P

R

boL

fbU

fbL

C

+

OVP

-

105% Vref

UVP

-

+

8% Vref with 4% Vref Vdd

Hysteresis

Soft Start

OPL

Vdd

200 mA

BO

UVLO

Undervoltage

Lock−Out

S

FB

6

Q

R

Reference

Block

Vref

-

Vref

+

Vout Low Detect

OTA

-

+

±28 mA

+

UVP BO

95% Vref

5

R

Z

Vcontrol(min)

C

Z

Thermal

Off

Bias Block

Iref Vdd

Output Buffer

Vcc

7

8

DRV

1

GND

Shutdown

BO

4

-

BO

+

VboH / VboL VboH = 1.3 V, VboL = 0.7 V

Vdd

OL

OVP

Vref

Vramp

-

+

Vdd

Current Mirror

Ics

Vbo

Fault

Vdd

Q

PWM

R

Latch

RS

Iref

+

-

Vref/10% Vref

Ics

R

CS

3

Ics*Vbo > 200 mVA

OPL

Division

OL

Ics > 200 mA

+

C1

S1

65/133/200 kHz

Oscillator

Im = (Ics*Vbo) / (4*(Vcontrol − Vcontrol(min))

Vm

R

2

M

C

M

OCP

Figure 1. Functional Block Diagram

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5

NCP1654

TYPICAL CHARACTERISTICS

10

8

6

, GATE DRIVE

OL

4

& R

RESISTANCE (W)

OH

R

2

0

32

30

28

(A)

26

EA_source

I

24

2.60

(V)

REF

V

2.55

2.50

2.45

2.40

Figure 3. Reference Voltage vs. Temperature

R

OH

R

OL

10075 12550250−25−50

TJ, JUNCTION TEMPERATURE (°C) TJ, JUNCTION TEMPERATURE (°C)

Figure 2. Gate Drive Resistance vs.

Temperature

−20

−22

−24

(A)

−26

EA_sink

I

−28

1251007550250−25−50

22

20

TJ, JUNCTION TEMPERATURE (°C) TJ, JUNCTION TEMPERATURE (°C)

10075 12550250−25−50

Figure 4. Source Current Capability of the

Error Amplifier vs. Temperature

300

250

(mS)

200

EA

G

150

100

TJ, JUNCTION TEMPERATURE (°C) TJ, JUNCTION TEMPERATURE (°C)

1251007550250−25−50 10075 12550250−25−50

−30

−32

150

100

50

0

pin6 (nA)

B

I

−50

−100

−150

Figure 5. Sink Current Capability of the Error

Amplifier vs. Temperature

Figure 6. Error Amplifier Gain vs. Temperature Figure 7. Feedback Pin Current vs.

Temperature (@V

fb

= V

REF

10075 12550250−25−50

)

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6

NCP1654

TYPICAL CHARACTERISTICS

4.0

3.9

3.8

(V)

3.7

3.6

CONTROL(max )

V

3.5

3.4

3.3

95.1

95.0

94.9

94.8

(%)

REF

94.7

/ V

94.6

outL

V

94.5

94.4

94.3

Figure 10. Ratio (V

215

3.3

3.2

3.1

(V)

3.0

CONTROL

2.9

DV

2.8

10075 12550250−25−50

TJ, JUNCTION TEMPERATURE (°C) TJ, JUNCTION TEMPERATURE (°C)

Figure 8. V

Maximum Voltage vs.

control

Temperature

1007550 125250−25−50

TJ, JUNCTION TEMPERATURE (°C) TJ, JUNCTION TEMPERATURE (°C)

Low Detect Threshold /

OUT

) vs. Temperature

V

REF

2.7

260

250

240

230

(mA)

220

Boost

I

210

200

190

306

−50

Figure 9. V

0−25

Maximum Swing (DV

control

vs. Temperature

Figure 11. Pin 5 Source Current when (V

Low Detect) is Activated vs. Temperature

10075 1255025

CONTROL

10075 12550250−25−50

OUT

)

210

205

(mA)

200

S(OCP)

I

195

190

185

−50 0−25 10075 1255025−50

0−25

TJ, JUNCTION TEMPERATURE (°C) TJ, JUNCTION TEMPERATURE (°C)

10075 1255025

Figure 12. Over−Current Protection Threshold

vs. Temperature

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286

266

(mA)

246

CS(OPL1)

I

226

206

186

Figure 13. Over−Power Current Threshold

= 0.9 V & Vm = 3 V) vs. Temperature

(@V

BO

7

NCP1654

TYPICAL CHARACTERISTICS

110

100

90

(mA)

80

CS(OPL2)

I

70

60

72

70

68

66

(kHz)

64

SW

f

62

100

99

98

97

96

MAXIMUM DUTY CYCLE (%)

140

138

136

134

(kHz)

132

SW

f

130

95

Figure 15. Maximum Duty Cycle vs.

Temperature

1251007550250−25−50

TJ, JUNCTION TEMPERATURE (°C) TJ, JUNCTION TEMPERATURE (°C)

Figure 14. Over−Power Current Threshold

= 2.67 V & Vm = 3 V) vs. Temperature

(@V

BO

1251007550250−25−50

60

58

TJ, JUNCTION TEMPERATURE (°C)

Figure 16. Switching Frequency vs.

Temperature (65 kHz Version)

210

205

200

195

(kHz)

SW

f

190

185

180

TJ, JUNCTION TEMPERATURE (°C)

Figure 18. Switching Frequency vs.

Temperature (200 kHz Version)

128

10075 12550250−25−50

126

10075 12550250−25−50

TJ, JUNCTION TEMPERATURE (°C)

Figure 17. Switching Frequency vs.

Temperature (133 kHz Version)

10075 12550250−25−50

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