INFINEON ICE2A0565, ICE2A165, ICE2A265, ICE2A365, ICE2B0565 User Manual

...

Datasheet V4.5, Jan 2004

CoolSET™-F2

ICE2A0565/165/265/365 ICE2B0565/165/265/365 ICE2A0565Z ICE2A180Z/280Z

ICE2A765I/2B765I ICE2A765P2/ICE2B765P2

Off-Line SMPS Current Mode Controller with integrated 650V/800V CoolMOS™

Power Management & Supply

Never stop thinking.

CoolSET™-F2 Revision History: 2004-01-28 Datasheet V4.5

Previous Version: Page Subjects (major changes since last revision)

For questions on technology, delivery and prices please contact the Infineon Technologies Of fices in Germany or the Infineon Technologies Companies and Representatives worldwide: see our webpage at http:// www.infineon.com.

CoolMOS™, CoolSET™ are trademarks of Infineon Technologies AG.

Edition 2004-01-28 Published by Infineon Technologies AG,

St.-Martin-Strasse 53, D-81541 München

Attention please!

The information herein is given to describe certain components and shall not be considered as warr anted characteristics.

Terms of delivery and rights to technical change reserved. We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding

circuits, descriptions and charts stated herein. Infineon Technologies is an approved CECC manufacturer.

Information

For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office in Germany or our Infineon Technolog ies Representatives worldwide (see address list).

Warnings

Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office.

Infineon Technologies Components may only be used in life-support devices or systems with the ex press written approval of Infineon Technologies, if a failure of such components can reasona bly be expe cted to cause the f ailure of that life-support device or system, or to aff ect t he safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered.

Off-Line SMPS Current Mode Controller with integrated 650V/800V

CoolSET™-F2

Product Highlights

• Best in class in DIP8, DIP7, TO220 packages

• No heatsink required for DIP8, DIP7

• Lowest standby power dissipation

• Enhanced protection functions all with

Auto Restart Mode

• Isolated drain package for TO220

• Increased creepage distance for TO220 packages

Features

• 650V/800V avalanche rugged CoolMOS™

• Only few external components required

• Input Vcc Undervoltage Lockout

• 67kHz/100kHz switching frequency

• Max duty cycle 72%

• Low Power Standby Mode to meet European Commission Requirements

• Thermal Shut Down with Auto Restart

• Overload and Open Loop Protection

• Overvoltage Protection during Auto Restart

• Adjustable Peak Current Limitation via external resistor

• Overall tolerance of Current Limiting < ±5%

• Internal Leading Edge Blanking

• User defined Soft Start Soft Switching for low EMI

Typical Application

VCC

Power

Management

Protection Unit

Start-up

PWM Controller

Current Mode

Precise Low Tolerance Peak Current Limitation

85 ... 270 VAC

SoftS

Soft Start

Feedback

Low Power

StandBy

Soft-Start Control

PWM-Controller

CoolSET™-F2

Description

The second generation CoolSET™-F2 provides several special enhancements to satisfy the needs for low power standby and protection features. In standby mode frequency reduction is used to lower the power consumption and support a stable output voltage in this mode. The frequency reduction is limited to 20kHz/21.5 kHz to avoid audible noise. In case of failure modes like open loop, overvoltage or overload due to short circuit the device switches in Auto Restart Mode which is controlled by the internal protection unit. By means of the internal precise peak current limitation the dimension of the transformer and the secondary diode can be lower which leads to more cost efficiency.

Snubber

VCC

Drain

CoolMOS™

Isense

GND

Sense

P-DIP-7-1

P-TO220-6-46

Feedback

P-DIP-7-1

P-DIP-8-6

P-DIP-8-4, -6

P-TO220-6-47P-TO220-6-46

P-TO220-6-47

Converter

DC Output

Datasheet V4.5 3 Jan 2004

CoolSET™-F2

Ordering Codes

Type Ordering Code Package V

DSFOSCRDSon

230VAC ±15%

ICE2A0565 Q67040-S4542 P-DIP-8-6 650V 100kHz 4.7Ω 23W 13W ICE2A165 Q67040-S4426 P-DIP-8-6 650V 100kHz 3.0Ω 31W 18W ICE2A265 Q67040-S4414 P-DIP-8-6 650V 100kHz 0.9Ω 52W 32W ICE2A365 Q67040-S4415 P-DIP-8-6 650V 100kHz 0.45Ω 67W 45W ICE2B0565 Q67040-S4540 P-DIP-8-6 650V 67kHz 4.7Ω 23W 13W ICE2B165 Q67040-S4489 P-DIP-8-6 650V 67kHz 3.0Ω 31W 18W ICE2B265 Q67040-S4478 P-DIP-8-6 650V 67kHz 0.9Ω 52W 32W ICE2B365 Q67040-S4490 P-DIP-8-6 650V 67kHz 0.45Ω 67W 45W ICE2A0565Z Q67040-S4541 P-DIP-7-1 650V 100kHz 4.7Ω 23W 13W ICE2A180Z Q67040-S4546 P-DIP-7-1 800V 100kHz 3.0Ω 29W 17W ICE2A280Z Q67040-84547 P-DIP-7-1 800V 100KHz 0.8Ω 50W 31W

typ @ T=25°C

Maximum power rating at Ta=75°C, Tj=125°C and with copper area on PCB = 6cm²

85-265 VAC

Type Ordering Code Package VDSF

OSCRDSon

230VAC ±15%

85-265 VAC

ICE2A765I Q67040-S4609 P-TO-220-6-46 650V 100kHz 0.45Ω 240W 130W ICE2B765I Q67040-S4607 P-TO-220-6-46 650V 67kHz 0.45Ω 240W 130W ICE2A765P2 Q67040-S4610 P-TO-220-6-47 650V 100kHz 0.45Ω 240W 130W ICE2B765P2 Q67040-S4608 P-TO-220-6-47 650V 67kHz 0.45Ω 240W 130W

typ @ T=25°C

Maximum practical continuous power in an open frame design at Ta=75°C, Tj=125°C and Rth=2.7K/W

Datasheet V4.5 4 Jan 2004

CoolSET™-F2

Table of Contents Page

1 Pin Configuration and Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1.1 Pin Configuration with P-DIP-8-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1.2 Pin Configuration with P-DIP-7-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1.3 Pin Configuration with P-TO220-6-46/47 . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

1.4 Pin Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

2 Representative Blockdiagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3.1 Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3.2 Improved Current Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3.2.1 PWM-OP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

3.2.2 PWM-Comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

3.3 Soft-Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

3.4 Oscillator and Frequency Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

3.4.1 Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

3.4.2 Frequency Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

3.5 Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

3.5.1 Leading Edge Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

3.5.2 Propagation Delay Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

3.6 PWM-Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

3.7 Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

3.8 Protection Unit (Auto Restart Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

3.8.1 Overload / Open Loop with Normal Load . . . . . . . . . . . . . . . . . . . . . . . .14

3.8.2 Overvoltage due to Open Loop with No Load . . . . . . . . . . . . . . . . . . . . .15

3.8.3 Thermal Shut Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

4 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

4.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

4.2 Thermal Impedance (ICE2X765I and ICE2X765P2) . . . . . . . . . . . . . . . . . .18

4.3 Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

4.4 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

4.4.1 Supply Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

4.4.2 Internal Voltage Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

4.4.3 Control Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

4.4.4 Protection Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

4.4.5 Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

4.4.6 CoolMOS™ Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

5 Typical Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . .24

6 Layout Recommendation for C

7 Outline Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Datasheet V4.5 5 Jan 2004

Pin Configuration and Functionality

1 Pin Configuration and Functionality

1.1 Pin Configuration with P-DIP-8-6

1.2 Pin Configuration with P-DIP-7-1

CoolSET™-F2

Pin Symbol Function

1 SoftS Soft-Start

2 FB Feedback

3 Isense Controller Current Sense Input,

4 Drain

5 Drain

6 N.C Not connected

7 VCC Controller Supply Voltage

8 GND Controller Ground

at Tj = 110°C

at Tj = 25°C

CoolMOS™ Source Output

650V1)/800V2) CoolMOS™ Drain

Package P-DIP-8-6

Sof tS

GND

VCCFB

Pin Symbol Function

1 SoftS Soft-Start

2 FB Feedback

3 Isense Controller Current Sense Input,

4 N.C. Not connected

5 Drain

7 VCC Controller Supply Voltage

8 GND Controller Ground

at Tj = 110°C

at Tj = 25°C

CoolMOS™ Source Output

650V1)/800V2) CoolMOS™ Drain

Package P-DIP-7-1

Sof tS

GND

VCCFB

Is ens e

Dr ai n

Figure 1 Pin Configuration (top view)

Datasheet V4.5 6 Jan 2004

N.C

Dr ain

Isense

Figure 2 Pin Configuration (top view)

n.c.

Dr ai n

1.3 Pin Conuration with P-TO220-6-46/47

CoolSET™-F2

Pin Configuration and Functionality

1.4 Pin Functionality

Pin Symbol Function

1 Drain 3 Isense 4 GND Controller Ground

5 VCC Controller Supply Voltage 6 SoftS Soft-Start 7 FB Feedback

at Tj = 110°C

650V1) CoolMOS™ Drain 650V1) CoolMOS™ Source

Package P-TO220-6-46/47

234567

SoftS (Soft Start & Auto Restart Control)

This pin combines the function of Soft Start in case of Start Up and Auto Restart Mode and the controlling of the Auto Restart Mode in case of an error detection.

FB (Feedback)

The information about the regulation is provided by the FB Pin to the internal Protection Unit and to t he internal PWM-Comparator to control the duty cycle.

Isense (Current Sense)

The Current Sense pin senses the voltage developed on the series resistor inserted in the source of the integrated CoolMOS™. When Isense reaches the internal threshold of the Current Limit Comparator, the Driver output is disabled. By this means the Over Current Detection is realized.

Furthermore the current information is provided for the PWM-Comparator to realize the Current Mode.

Drain (Drain of integrated CoolMOS™)

Pin Drain is the connection to the Drain of the internal CoolMOS

VCC (Power supply)

This pin is the positiv supply of the IC. The operating range is between 8.5V and 21V.

To provide overvoltage protection the driver gets disabled when the voltage becomes higher than 16.5V during Start Up Phase.

GND (Ground)

This pin is the ground of the primary side of the SMPS.

Drain

Isense

GND

VCC

SoftS

Figure 3 Pin Configuration (top view)

Datasheet V4.5 7 Jan 2004

2 Representative Blockdiagram

OUT

Converter

DC Output

Snubber

Drain

CoolMOS™

Gate

Driver

Q S

Clock

Reset

PWM-Latch

norm

-f

standby

Spike

Blanking

PWM

Comparator

Q R

Error-Latch s 5

Soft-Start

Soft Start

Comparator

0.72

Duty Cycle Max

max

Duty Cycle

Oscillator

6.5V

4.8V

5.3V

4.0V

Voltage

Reference

Internal Bias

Power Management

13.5V

Reset

Lockout

Power-Down

Line

Undervoltage

VCC

Power-Up

8.5V

CoolSET™-F2

Representative Blockdiagram

Sense

Isense

10k

220ns

Blanking

Leading Edge

csth

Comparator

Current-Limit

0.3V

osc

norm

Optocoupler

ICE2Bxxxx

Compensation

Propagation-Delay

Current Limiting

ICE2Axxxx

x3.65

0.8V

Improved Current Mode

PWM OP

standby

Standby Unit

67kHz

20kHz

100kHz

21.5kHz

norm

standby

Start-up

85 ... 270 VAC

VCC

4.0V

16.5V

6.5V

>140°C

Thermal Shutdown

4.8V

5.3V

5.6V

Soft-Start

SoftS

6.5V

Soft-Start

Protection Unit

GND

CoolSET™-F2

Figure 4 Representative Blockdiagram

Datasheet V4.5 8 Jan 2004

3 Functional Description

3.1 Power Management

CoolSET™-F2

Functional Description

3.2 Improved Current Mode

Main Line (100V-380V)

Start-Up

Primary Winding

VCC

Power Management

SoftS

Soft-Start

Undervoltage

Lockout

8.5V

Pow er-D own

Reset

Power-Up

Reset

13.5V

6.5V

Soft-S ta rt

Intern al

Bias

Voltage

Reference

RSQ

Error-Latch

Soft-S ta rt C o m para to r

Error-D ete ction

6.5V

5.3V

4.8V

4.0V

PWM-Latch

Figure 5 Power Management

The Undervoltage Lockout monitors the external supply voltage V current consumption is max. 55µA. When the SMPS is plugged to the main line the current through R charges the external Capacitor C exceeds the on-threshold V circuit and the voltage reference are switched on. After that the internal bandgap generates a reference voltage V avoid uncontrolled ringing at switch-on a hysteresis is implemented which means that switch-off is only after active mode when Vcc falls below 8.5V.

In case of switch-on a Power Up Reset is done by reseting the internal error-latch in the protection unit.

When V internal reference is switched off and the Power Down reset let T1 discharging the soft-start capaci tor C at pin SoftS. Thus it is ensu re d th at at ev ery s wi tch- on the voltage ramp at pin SoftS starts at zero.

REF

falls below the off-threshold V

VCC

. In case the IC is inactive the

VCC

Start-up

. When V

VCC

=13.5V the internal bias

CCon

VCC

=6.5V to supply the internal circuits. To

=8.5V the

CCoff

Soft-Start

Soft-Start Com parator

PW M-Latch

RSQ

Driver

PW M Com parator

0.8V

PWM OP

x3.65

Isense

Improved Current Mode

Figure 6 Current Mode

Current Mode means that the duty cycle is controlled by the slope of the primary current. This is done by comparison the FB signal with the amplified current sense signal.

Amplified Current Signal

0.8V

Driver

Figure 7 Pulse Width Modulation

In case the amplified current sense signal exceeds the FB signal the on-time T reseting the PWM-Latch (see Figure 7).

of the driver is finished by

Datasheet V4.5 9 Jan 2004

The primary current is sensed by the external series resistor R CoolMOS™. By means of Current Mode the regulation of the secondary voltage is insensitive on line variations. Line variation causes varition of the increasing current slope which controls the duty cycle. The external R the maximum source current of the integrated

inserted in the source of the integrated

Sense

allows an individual adjustment of

Sense

CoolMOS™.

Soft-Start Com parator

PWM Comparator

PW M-Latch

OSC

0.3V C5

G a te Drive r

O scillato r

0.8V

10k

Ω

x3.65

20pF

PWM O P

Voltage Ramp

Figure 8 Improved Current Mode

To improve the Current Mode during light load conditions the amplified current ramp of the PWM-OP is superimposed on a voltage ramp, which is built by the switch T low pass filter composed of R Figure 9). Every time the oscillator shuts down for max. duty cycle limitation the switch T2 is closed by V When the oscillator triggers the Gate Driver T2 is opened so that the voltage ramp can start. In case of light load the amplified current ramp is to small to ensure a stable regulation. In that case the Voltage Ramp is a well defined signal for the comparison with the FB-signal. The duty cycle is then controlled by the slope of the Voltage Ramp. By means of the Compa rator C5, the Gate Driver is switched-off until the voltage ramp exceeds 0.3V. It allows the duty cycle to be reduced continously till 0% by decreasing V

, the voltage source V1 and the 1st order

below that threshold.

and C1(see Figure 8,

OSC

CoolSET™-F2

Functional Description

OSC

max.

Duty Cycle

Voltage Ramp

0.8V FB

0.3V

Gate Driver

Figure 9 Light Load Conditions

3.2.1 PWM-OP

The input of the PWM-OP is applied over the internal leading edge blanking to the external sense resistor

connected to pin ISense. R

Sense

source current into a sense voltage. The sense voltage is amplified with a gain of 3.65 by PWM OP. The output of the PWM-OP is connected to the voltage source V1. The voltage ramp with the superimposed amplified current singal is fed into the positive inputs of the PWMComparator, C5 and the Soft-Start-Comparator.

Sense

3.2.2 PWM-Comparator

The PWM-Comparator compares the sensed current signal of the integrated C oolMOS signal V external optocoupler or external transistor in combination with the internal pullup resistor R provides the load information of the feedback circuitry. When the amplified current signal of the integrated CoolMOS™ exceeds the signal V

(see Figure 10). VFB is created by an

Comparator switches off the Gate Driver.

with the feedback

converts the

and

the PWM-

Datasheet V4.5 10 Jan 2004

6.5V

Soft-Start Com parator

PW M-Latch

PW M Com parator

0.8V

Optocoupler

PWM OP

Ise n s e

x3.65

Improved Current Mode

Figure 10 PWM Controlling

3.3 Soft-Start

So ftS

5.6V

5.3V

So ft-Start

G a te Drive r

Figure 11 Soft-Start Phase

The Soft-Start is realized by the internal pullup resistor

and the external Capacitor C

Soft-Start

Figure 2). The Soft-Start voltage V charging the external capacitor C

is generated by

SoftS

Soft-Start

(see

Soft-Start

by the internal

CoolSET™-F2

Functional Description

pullup resistor R compares the voltage at pin SoftS at the negative input with the ramp signal of the PWM-OP at the positive input. When Soft-Start voltage V Feedback voltage V the pulse width by reseting the PWM-Latch (see Figure

11). In addition to Start-Up, Soft-Start is also activated at each restart attempt during Auto Restart. By means of the above mentioned C defined by the user. The Soft-Start is finished when

exceeds 5.3V. At that time the Protection Unit is

SoftS

activated by Comparator C4 and senses the FB by Comparator C3 wether the voltage is below 4.8V which means that the voltage on the secondary side of the SMPS is settled. The internal Zener Diode at SoftS with breaktrough voltage of 5.6V is to prevent the internal circuit from saturation (see Figure 12).

6.5V

5.6V

So ftS

6.5V

5.3V

4.8V

Figure 12 Activation of Protection Unit

The Start-Up time T voltage V Start Phase T

Soft Start–

By means of Soft-Start there is an effective minimization of current and voltage stresses on the integrated CoolMOS™, the clamp circuit and the output overshoot and prevents saturation of the transformer during Start-Up.

is settled must be shorter than the Soft-

OUT

Soft-Start

. The Soft-Start-Comparator

Soft-Start

the Soft-Start-Comparator limits

SoftS

the Soft-Start can be

Soft-Start

Power-Up Reset

Sof t-S ta rt

Erro r-L atc h

Clock

PWM-Latch

within the converter output

Start-Up

(see Figure 13).

Soft Start–

------------------------------------- -=

Soft Start–

1.69×

is less than

RSQ

Gate Driver

Datasheet V4.5 11 Jan 2004

+ 23 hidden pages