Diodes AP34063 User Manual

A

P34063

UNIVERSAL DC/DC CONVERTER

Description

The AP34063 Series is a monolithic control circuit containing the primary functions required for DC-to-DC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series is specifically designed for incorporating in Step-Down and Step-Up and VoltageInverting applications with a minimum number of external components.

Features

• Operation from 3.0V to 40V Input

• Low Standby Current

• Current Limiting

• Output Switch Current to 1.6A

• Output Voltage Adjustable

• Frequency Operation to 100 kHz

• Precision 2% Reference

• SO-8 package

 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3)

• PDIP-8 and SO-8 package

 Totally Lead-Free; RoHS Compliant (Notes 1 & 2)

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.

AP34063

Document number: DS31004 Rev. 6 - 2

Pin Assignments

1 of 11

www.diodes.com

Switch

Collector

Switch

Emitter

Timing

Capacitor

Gnd

Switch

Collector

Switch

Emitter

Timing

Capacitor

Gnd

1 2

3 4

1

2

3

4

SO-8

( Top View )

PDIP-8

( Top View )

8 7

6 5

8

7

6

5

Driver

I

pk

Sense

VCC

Collector

Comparator Inverting Input

Driver

pk

I

Sense

VCC

Collector

Comparator Inverting

Input

September 2012

A

Typical Applications Circuit

(1) Step-Up Converter

P34063

120uH

L

Test Conditions Results

Line Regulation Load Regulation Output Ripple Efficiency

Vin

12V

Rsc

0.24

8

180

SQ

R

7

Ipk

CT

Osc

6

R1

+

470

V V V V

VCC

uF

5

10k

= 9V to 12V, IO = 200mA

IN

= 12V, IO = 50mA to 200mA

IN

= 12V, IO = 200mA 500mVPP

IN

= 12V, IO = 200mA

IN

R2

56k

+

Comp.

_

Q2

Q1

1.25V Ref

Reg

20mV = ±0.035% 15mV = ±0.035%

80%

1

2

3

680

pF

4

470uF

CT

+

CO

B240

Vout

28V/200mA

1.0uH Vout

+

100

Optional Filter

AP34063

Document number: DS31004 Rev. 6 - 2

2 of 11

www.diodes.com

September 2012

A

Typical Applications Circuit (cont.)

(2) Step-Down Converter

P34063

Rsc

0.11

Vin

25V

+

470

uF

R1 25k

Test Conditions Results

Line Regulation Load Regulation Output Ripple Efficiency

V

= 12V to 24V, IO = 500mA

IN

V

= 24V, IO = 50mA to 500mA

IN

V

= 24V, IO = 500mA 160mVPP

IN

V

= 24V, IO = 500mA

IN

AP34063

Document number: DS31004 Rev. 6 - 2

8

SQ

7

Ipk

6

VC

C

+ _

5

R2

36k

R

CT

Osc

Comp.

Q2

1.25V Ref

Reg

Q1

1

2

B240

3

CT

470

pF

4

470uF

L 100uH

5.0V/500mA

+

CO

Vout

1.0uH

Vout

+

100

Optional Filter

20mV = ±0.2% 5mV = ±0.05%

82%

3 of 11

www.diodes.com

September 2012

A

Typical Applications Circuit (cont.)

(3) Voltage Inverting Converter

P34063

Rsc

0.26

Vin

4.5V to 6.0V

470uF

R2

Test Conditions Results

Line Regulation Load Regulation Output Ripple Efficiency

= 4.5V to 6.0V, IO = 100mA

V

IN

= 5.0V, IO = 20mA to 100mA

V

IN

V

= 5.0V, IO = 100mA 500mVPP

IN

V

= 5.0V, IO = 100mA

IN

AP34063

Document number: DS31004 Rev. 6 - 2

8

SQ

7

Ipk

6

VC

5

50k

R1

C

+ _

3k

+

R

CT

Osc

Comp.

Q2

1.25V Ref Reg

Q1

1

2

L

3

+

4

100

uH

680

pF

470uF

B240

Vout

-12V/100mA

CO

+ +

1.0uH

Optional Filter

Vout

100

20mV = ±0.08% 30mV = ±0.12%

60%

4 of 11

www.diodes.com

September 2012

A

P34063

Absolute Maximum Ratings (@T

Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only; functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time.

= +25°C, unless otherwise specified.)

A

Symbol Parameter Value Unit

VCC

VIR

V

C(SWITCH)

V

E(SWITCH)

V

CE(SWITCH)

V

C(DRIVER)

I

C(DRIVER)

ISW

PD

θ

JA

θ

JC

TMJ TOP T

stg

Notes: 4. Maximum package power dissipation limits must be observed.

5. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.

Power Supply Voltage 40 V Comparator Input Voltage Range -0.3 to +40 V Switch Collector Voltage 40 V

Switch Emitter Voltage (V

Switch Collector to Emitter Voltage 40 V Driver Collector Voltage 40 V Driver Collector Current 100 mA

1 = 40V)

40 V

Switch Current 1.6 A Power Dissipation (Note 4)

SO-8: T

= +25°C

A

PDIP-8: TA = +25°C

600 mW

1.25 W

SO-8 117

Thermal Resistance

PDIP-8 138 SO-8 19

°C/W

PDIP-8 25 Maximum Junction Temperature (Note 5) +150 Operating Junction Temperature Range 0 to +105 Storage Temperature Range -65 to +150

°C °C °C

Electrical Characteristics (V

= 5.0V, unless otherwise specified.)

CC

Symbol Parameter Min Typ Max Unit

OSCILLATOR

24 33 42 kHz 24 30 42 µA

140 200 260 µA

5.2 6.5 7.5 —

300 400 450 mV

I

DISCHG

I

DISCHG

V

ipk (SENSE)

f

Frequency (V

OSC

I

Charge Current (VCC = 5.0V to 40V, TA = +25°C)

CHG

5 = 0V, CT = 1.0ηF, TA = +25°C)

Discharge Current (VCC = 5.0V to 40V, TA = +25°C)

/ I

Discharge to Charge Current Ratio (Pin 7 to VCC, TA = +25°C)

CHG

Current Limit Sense Voltage (I

CHG

= I

DISCHG

, TA = +25°C)

OUTPUT SWITCH (Note 3)

V

CE (sat)

V

CE (sat)

Saturation Voltage, Darlington Connection

= 1.0A, Pins 1, 8 connected)

(I

SW

Saturation Voltage, Darlington Connection

= 1.0A, ID = 50mA, Forced β ≈ 20)

(I

SW

hFE DC Current Gain (ISW = 1.0A, VCE = 5.0V, TA = +25°C)

I

Collector Off-State Current (VCE = 40V)

C(off)

— 1.0 1.3 V

— 0.45 0.7 V 50 75 — —

— 0.01 100 µA

COMPARATOR

Vth Threshold Voltage

= +25°C

— 1.225 1.25 1.275 — — 1.21 — 1.29 —

Reg

LINE

T

A

T

= 0°C to +70°C

A

Threshold Voltage Line Regulation (VCC = 3.0V to 40V)

— — — V

— 1.4 6.0 mV

TOTAL DEVICE

ICC

Supply Current (V

> VTH Pin 2 = Gnd, remaining pins open)

V

PIN 5

= 5.0V to 40V, CT =1.0ηF, Pin 7 = VCC,

CC

— — 3.5 mA

AP34063

Document number: DS31004 Rev. 6 - 2

5 of 11

www.diodes.com

September 2012

A

Representative Schematic Diagram

P34063

Collector

Comparator

Inverting

AP34063

Document number: DS31004 Rev. 6 - 2

Drive

I

Sense

V

CC

Input

8

1

Switch Collector

SQ

R

7

pk

100

Q2

Q1

2

Switch Emitter

Ipk

Oscillator

6

Comparator

5

CT

+ _

(Bottom View)

6 of 11

www.diodes.com

1.25V

Reference

Regulator

3

4

Timing Capacitor

Gnd

September 2012

A

Typical Performance Characteristics

Figure 1. Vce(sat) versus le

1.4

P34063

Figure 2. Reference Voltage versus Temp.

1.26

1.2

1

0.8

Vce(sat), Saturation Voltage (V)

0.6 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6

Ie, Emitter Current (A)

Figure 3. Current Limit Sense Voltage

versus Temperature

440

420

400

380

360

Current Sense Voltage (mV)

340

320

0 10203040 5060708090100

Temperature (oC)

1.255

1.25

Reference Voltage (V )

1.245

1.24 0 102030405060708090100

Temperature (oC)

Figure 4. Standby Supply Current

versus Supply Voltage

4.0

3.5

3.0

2.5

2.0

1.5

1.0

Icc, Supply Current (mA)

0.5

0.0 0 5 10 15 20 25 30 35 40

Vcc, Supply Voltage (V)

Figure 5. Emitter Follower Configuration

Output Saturation Voltage vs. Emitter Current

1.8

1.75

1.65

( sat), (V)

CE

V

1.55

1.45

Vcc=2~10V Pin1,7,8=Vcc Pin3,5=GND

1.7 T

=25oC

A

≤10W

Pin2=5

1.6

1.5

1.4

100 300 500 700 900 1100 1300 1500

AP34063

Document number: DS31004 Rev. 6 - 2

I

E

(mA)

1000

100

, Output Switch On-Off Time(us)

on-off

t

7 of 11

www.diodes.com

Figure 6.Output S witch On-Off Time v ersus

Oscillator Timing Capacitor

V

= 5.0V

CC

Pin 7 = V

CC

Pin 5 = GND T

= 25oC

A

10

1

0.1

0.01 0.1 1 10

CT, Oscillator Timing Capacitor (

t

on

t

off

nF)

September 2012

A

Design Formula Table

Calculation Step-Up Step-Down Voltage-Inverting

V

tON / t

( tON + t

t

OFF

)

OUT

V

t

tON ( tON +t

CT

I

(switch) 2I

PK

4.0 × 10-5 t

OUT(MAX)

RSC 0.3 / I

( V

IN(MIN)

L

(MIN)

CO

V

= Saturation voltage of the output switch.

SAT

V

= Forward voltage drop of the output rectifier.

F

9

I

PK (SWITCH)

V

+ VF –V

– V

IN(MIN)

1/f 1/f 1/f

t

+ t

ON

t

ON

t

OFF

(tON / t

PK (SWITCH)

– V

SAT

I

OUT tON

RIPPLE (pp)

V

IN(MIN)

SAT

t

OFF

V

IN(MIN)

+1

) – t

( tON +t

OFF

4.0 × 10-5 tON 4.0 × 10-5 tON

ON

+1) 2I

OFF

0.3 / I

)

t

ON(MAX)

I

(V

IN(MIN)

I

PK (SWITCH)

– V

PK (SWITCH)

8V

The following power supply characteristics must be chosen:

V

- Nominal input voltage.

IN

- Desired output voltage, |V

V

OUT

I

- Desired output current.

OUT

- Minimum desired output switching frequency at the selected values of VIN and IO.

F

MIN

V

RIPPLE(pp)

- Desired peak-to-peak output ripple voltage. In practice, the calculated capacitor value will need to be increased due to its

| = 1.25 (1+R2/R1)

OUT

equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly affect the line and

load regulation.

P34063

+ VF I V

OUT

– V

– v

SAT

+ t

ON

OFF

tON

t

OFF

) – t

OFF

OUT(MAX)

PK (SWITCH)

– V

SAT

(tON + t

RIPPLE (pp)

OUT

t

+1

( tON +t

OFF

2I

0.3 / I )

OUT

t

ON(MAX)

)

OFF

V

( V

9

V

tON

OFF

OUT(MAX)

IN(MIN)

I

PK (SWITCH)

l + VF

OUT

– V

IN(MIN)

ON

– V

SAT

+ t

OFF

+1

) – t

OFF

(tON / t

OFF

PK (SWITCH)

)

SAT

I

OUT tON

RIPPLE (pp)

+1)

t

ON(MAX)

Ordering Information

AP 34063 XX X - X

Package

S8 : SO-8 N8 : PDIP-8

Lead Free

L : Lead Free G : Green

Packing

U : Tube

13 : Tape & Reel

Part Number

Pb

AP34063S8L-13 S8 SO-8 NA NA 2500/Tape & Reel -13

Lead-Free

Package

Code

Packaging

Quantity

AP34063S8G-13 S8 SO-8 NA NA 2500/Tape & Reel -13

Pb

AP34063N8L-U N8 PDIP-8 60 - U NA NA

Lead-Free

AP34063

Document number: DS31004 Rev. 6 - 2

Tube 13” Tape and Reel

Part Number

Suffix

Quantity Part Number Suffix

8 of 11

www.diodes.com

September 2012

A

Marking Information

(1) SO-8

P34063

( Top View )

Logo

Part No

(2) PDIP-8

Logo

Part No

AP34063

Document number: DS31004 Rev. 6 - 2

8

.

AP34063 YY

WW

5

L : Lead Free

X

G : Green Internal code

Xth week = 01~52

41

Year : "08" = 2008

"09" = 2009

~

( Top View )

8

.

AP34063

YY

WW X

5

L : Lead Free

X

Internal code Xth week = 01~52

41

9 of 11

www.diodes.com

Year : "08" = 2008

"09" = 2009

~

September 2012

A

Package Outline Dimensions (All dimensions in mm.)

Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version. (1) SO-8

E1

A2

E

A1

Detail ‘A’

h

°

45

A3

A

L

0.254

Gaug e Plan e Seating Plane

7°~9

°

Detail ‘A’

e

b

D

(2) PDIP-8

A

AP34063

Document number: DS31004 Rev. 6 - 2

B

L

G

C

K

H

D F

N

M

J

10 of 11

www.diodes.com

Dim Min Max

A 9.02 9.53 B 6.15 6.35 C 3.10 3.50 D 0.36 0.56 F 1.40 1.65 G 2.54 typ. H 0.71 0.97 J 0.20 0.36 K 2.92 3.81 L 7.62 8.26 M N 0.38 (min)

All Dimensions in mm

SO-8

A - 1.75 A1 0.10 0.20 A2 1.30 1.50 A3 0.15 0.25

b 0.3 0.5

D 4.85 4.95

E 5.90 6.10

E1 3.85 3.95

e 1.27 Typ

h - 0.35

L 0.62 0.82

0° 8°

θ

All Dimensions in mm

PDIP-8

⎯

15°

P34063

September 2012

A

P34063

Suggested Pad Layout

Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.

(1) SO-8

DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages.

Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorize d application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.

Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks.

Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:

A. Life support devices or systems are devices or systems which:

1. are intended to implant into the body, or

2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the

labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the

failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and

acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.

www.diodes.com

AP34063

Document number: DS31004 Rev. 6 - 2

X

Dimensions Value (in mm)

X 0.60

C1

C2

Y

IMPORTANT NOTICE

LIFE SUPPORT

11 of 11

www.diodes.com

Y 1.55 C1 5.4 C2 1.27

September 2012