Datasheet APW7036-20KC-TR, APW7036-18KC-TU, APW7036-18KC-TR, APW7036-15KC-TU, APW7036-12KC-TR Datasheet (ANPEC)

Copyright  ANPEC Electronics Corp. Rev. A.1 - May, 2001

APW7036

www.anpec.com.tw1

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders.

Advanced Dual PWM Power Controller

••

•

2 Regulated Voltage are provided

− SYNC Switching Power Internal Reference

Voltage (1.25V , 1.5V , 1.8V and 2.05V)

− ASYNC Switching Power Internal Reference

Voltage (1.5V)

••

•

Simple Single-Loop Control Design

− V oltage-Mode PWM Control

••

• Excellent Output Voltage Regulation

− SYNC Output : ±1% Over Temperature

− ASYNC Output : ±3% Over Temperature

••

• Fast Transient Response

− High-Bandwidth Error Amplifier

− Full 0% to 100% Duty Ratio

••

• Power-Good Output Voltage Monitor

••

• Over-Voltage and Over-Current Fault Monitors

••

• Small Converter Size

− Constant Frequency Operation(200kHz)

− Programmable Oscillator from 50kHz to 800kHz

− Reduce External Component Count

••

• 20Pin , SOIC Package

Features

Applications

••

• High Power 5V to 2.5 or 3.3V DC-DC Regulator

••

• VGA Card Power Regulation

General Description

The APW7036 provides complete power control and protection for two DC-DC converter optimized in VGA Card applications. It integrates two PWM controllers , as well as the monitoring and protection function into a single package. The APW7036 provides simple , single feedback loop , voltage mode control with fast transient response. The output voltage of the SYNC converter can be precisely regulated to as low as V

REF

(1.25V , 1.5V , 1. 8V and 2.05V) , with a maximum tolerence of ±1.0% over temperature. The APW7036 can provides in excess of 14A of output current for an on-board DC/DC converter. It can monitors all the output voltage , and a single Power Good signal is issued when the SYNC output is within ±10% of the V

REF

setting and the ASYNC output levels is above under-voltage levels. Additional built-in over-voltage protection for the SYNC output uses the lower MOSFET to prevent output voltage above 1 15% of the V

REF

setting. The PWM controller’s over-current function monitor the output current by sensing the voltage drop across the upper MOSFET’s R

DS(ON)

,

eliminating the need for a current sensing resistor .

Pin Description

VCC

GATE

PHASE2

FB2

OCSET1

FB1 COMP

OCSET2

PGOOD

SS

VSEN

NC

VAUX

1 2

3 4 5 6 7 8

10

9

16 15 14 13

GND

PGND

NC

17

18

19

20

12 11

UGATE

LGATE

PHASE1

FAULT/RT

Copyright  ANPEC Electronics Corp. Rev. A.1 - May, 2001

APW7036

www.anpec.com.tw2

Ordering Information

Absolute Maximum Ratings

Symbol Parameter Rating Unit

VCC Supply Voltage 15 V

VI , V

O

Input , Output or I/O Voltage GND -0.3 V to V12 +0.3 V

T

A

Operating Ambient Temperature Range 0 to 70

°

C

T

J

Junction Temperature Range 0 to 125

°

C

T

STG

Storage Temperature Range -65 to +150

°

C

T

S

Soldering Temperature 300 ,10 seconds

°

C

Block Diagram

GATE

CONTROL

SOFT-START

AND FAULT

LOGIC

GATE

CONTROL

OCSET2

GATE

PHASE2

FB2

GND

PGND

LGATE

PHASE1

UGATE

PGOOD

OCSET1VSEN

FB1SSFAULT

200uA

VCC

DRIVE2

OC2

INHIBIT

PWM2

1.5V

ERROR

AMP2

1.05V

VCC

OSCILLATOR

4.5V

V

REF

ERROR

AMP1

0V

FAULT

OC1

PWM1

VCC

LOWER

DRIVE

VCC

DRIVE1

INHIBIT

115%

90%

110%

200uA

COMP

28uA

POR

VAUX

VCC

APW7036

V

REF

Voltage Code 12 : 1.25V 15 : 1.50V 18 : 1.80V 20 : 2.05V Package Code K : SOP - 20 Temp. Range C : 0 to 70 C Handling Code TU : Tube TR : Ta

p

e & Reel

Handling Code Temp. Range Package Code V

REF

Voltage Code

Copyright  ANPEC Electronics Corp. Rev. A.1 - May, 2001

APW7036

www.anpec.com.tw3

Thermal Characteristics

Symbol Parameter Value Unit

R

θ

JA

Thermal Resistance in Free Air

SOIC SOIC (with 3in

2

of Copper)

75 65

°

C/W

Electrical Characteristics

(Recommended operating conditions , Unless otherwise noted) Refer to Block and Simplified Power System Diagrams , and Typical Application Schematic

APW7036

Symbol Parameter Test Conditions

Min. Typ. Max.

Unit

VCC Supply Current

I

CC

Nominal Supply Current UGATE , LGATE , GATE ,

open

9mA

Power-on Reset

Rising VCC Threshold Vocset=4.5V 10.4 V Falling VCC Threshold Vocset=4.5V 8.2 V Rising VAUX Threshold Vocset=4.5V 2.5 V VAUX Threshold Hysteresis Vocset=4.5V 0.5 V Rising V

OCSET

Threshold 1.26 V

Oscillator

F

OCS

Free Running Frequency RT= Open 185 200 215 kHz

∆

V

OSC

Ramp Amplitude RT= Open 1.9 V

P-P

Switching Controller Reference Voltage

V

REF

Reference Voltage APW7036-12 APW7036-15 APW7036-18 APW7036-20

1.25

1.50

1.80

2.05

V

Reference Voltage accuracy -1.0 +1.0 %

V

FB2

Reference Voltage 1.5 V Reference Voltage accuracy -3.0 +3.0 %

Synchronous PWM Controller Error Amplifier

DC Gain 88 dB

GBWP Gain-Bandwidth Produc t 15 MHz

SR Slew Rate COMP=10pF 6

V/µs

PWM Controllers Gate Drivers

I

UGATE

UGATE1,GATE Sourc e VCC=12V, V

UGATE 1,GATE

=6V 1 A

R

UGATE

UGATE1,GATE Sink V

UGATE1,GATE

=1V 3.5

Ω

Copyright  ANPEC Electronics Corp. Rev. A.1 - May, 2001

APW7036

www.anpec.com.tw4

Electrical Characteristics Cont.

Functional Pin Description

UGA TE (Pin 1)

Connect UGATE pin to the synchronous PWM converter’s upper MOSFET gate. This pin provides the gate drive for the upper MOSFET.

VCC (Pin 2)

Provide a 12V bias supply for the IC to this pin. This pin also provides the gate bias charge for all the MOSFETs controlled by the IC. The voltage at this pin is monitored for Power-On Reset purposes.

GA TE (Pin 3)

Connect GATE pin to the standard BUCK PWM converter’s MOSFET gate. This pin provides the gate drive for the MOSFET.

PHASE2 (Pin 4)

Connect the PHASE2 pin to the standard BUCK PWM

converter’s MOSFET source. This pin is used to monitor the voltage drop across the MOSFET for over-current protection.

PGOOD (Pin 5)

PGOOD is an open collector output used to indicate the status of the output voltages. This pin is pulled low when the synchronous regulator output is not within 10% of the reference voltage or the other output is below under-voltage thresholds.

NC (Pin 10, 13)

No Connection.

OCSET1 , 2 (Pin 17 , 6)

Connect a resistor (R

OCSET

) from this pin to the drain

of the PWM converter’s MOSFET. R

OCSET

, an internal

200µA current source (I

OCSET

) , and the MOSFET’s

on-resistance(r

DS(ON)

) set the converter over-current

APW7036

Symbol Parameter Test Conditions

Min. Typ. Max.

Unit

PWM Controllers Gate Drivers

I

LGATE

LGATE Source VCC=12V, V

LGATE

=1V 1 A

R

LGATE

LGATE Sink V

LGATE

= 1V 3

Ω

Protection

VSEN Over-Voltage (VSEN/V

REF

) VSEN Rising 115 120 %

I

OVP

FAULT Souring Current V

FAULT/RT

=2.0V 8.5 mA

I

OCSET

OCSET1,2 Current Source V

OCSET

= 4.5V

DC

170 200 230

µ

A

I

SS

Soft Start Current 28

µ

A

Power Good

VSEN Upper Threshold (VSEN/

V

REF

)

VSEN1 Rising

110 %

VSEN Under Voltage (VSEN/V

REF

)

VSEN1 Rising

94 % VSEN Hysteresis (VSEN/

V

REF

)

Upper /Lower Threshold 2 %

V

PGOOD

PGOOD Voltage Low I

PGOOD

= -4mA 0.8 V

Copyright  ANPEC Electronics Corp. Rev. A.1 - May, 2001

APW7036

www.anpec.com.tw5

Functional Pin Description Cont.

(OC) trip point according to the following equation:

I

PEAK

=

An over-current trip cycles the soft-start function.

FB2 (Pin 7)

This pin provides the feedback for the non-synchronous switching regulator. A resistor driver is connected from this pin to regulator output and GND that sets the output voltage. The value of the resistor connected from regulator output to FB2 must be less than 150Ω .

SS (Pin 8)

Connect a capacitor from this pin to ground. This capacitor , along with an internal 28µA current source , sets the soft-start interval of the converter.

FAULT / RT (Pin 9)

This pin provides oscillator switching frequency adjustment. By placing a resistor (RT ) from this pin to GND , the nominal 200kHz switching frequency is increased. Conversely , connecting a pull-up resistor (RT ) from this pin to VCC reduces the switching frequency. Nominally , the voltage at this pin is 1.26V. In the event of an over-voltage or over-current condition , this pin is internally pulled to VCC.

V AUX (Pin 1 1)

The +3.3V input voltage at this pin is monitored for power-on reset (POR) purposes.

GND (Pin 12)

Signal ground for the IC. All voltage levels are measured with respect to this pin.

COMP and FB1 (Pins 14 , and 15)

COMP and FB1 are the available external pins of the

synchronous PWM regulator error amplifier. The FB1 pin is the inverting input of the error amplifier. Similarly , the COMP pin is the error amplifier output. These pins are used to compensate the voltage-mode control feedback loop of the synchronous PWM converter.

VSEN (Pin 16)

This pin is connected to the synchronous PWM converters’s output voltage. The PGOOD and OVP comparator circuits use this signal to report output voltage status and for over-voltage protection.

PGND (Pin 18)

This is the power ground connection. Tie the synchronous PWM converter’s lower MOSFET source to this pin.

LGATE (Pin19)

Connect LGA TE to the synchronous PWM converter’s lower MOSFET gate. This pin provides the gate drive for the lower MOSFET.

PHASE1 (Pin 20)

Connect the PHASE1 pin to the synchronous PWM converter’s upper MOSFET source. This pin is used to monitor the voltage drop across the upper MOSFET for over-current protection.

I

OCSET

* R

OCSET

r

DS(ON)

Copyright  ANPEC Electronics Corp. Rev. A.1 - May, 2001

APW7036

www.anpec.com.tw6

Simplified Power System Diagram

Typical Characteristics

APW7036

+5V

IN

Q1

Q2

Q3

Synchronous

PWM

Controller

Standard

Buck

PWM

Controller

V

OUT2

V

OUT1

+5V

VOUT2

(3.3V)

VOUT1 (2.5V)

+5V

+12V

C10

330uF

R12

1.2K

C8

220pF

R13

5.1R

Q2

APM9410

D1

FM5800R9

120RF

C11

330uF

R10

100RF

R7 3K

R4

5.1R

Q1B

APM7313

C5

330uF

C4

330uF

C3

330uF

L2

7.8uH

Q1A

APM7313

C2

220pF

R2

1.2K

R3

5.1R

C1 1uF

R1

10R

L3

7.8uH

L1

1uH

C6

10pF

C2

2700pF

R6

100RF

R5

67RF

R8

150K

1

10

9

8

7

6

5

4

3

2

20

11

12

13

14

15

16

17

18

19

UGATE

OCSET2

PGOOD

PHASE2

GATE

VCC

NC

SS

FB2

FAULT GND

FB1

COMP

NC

VAUX

PGND

OCSET1

VSEN

LGATE

PHASE1

APW7036-15

LP1 LED

R11 750

+5V

C9

0.1uF

+3.3V

Copyright  ANPEC Electronics Corp. Rev. A.1 - May, 2001

APW7036

www.anpec.com.tw7

Typical Characteristics

VREF Voltage deviation (%)

Junction T emperature (oC) Junction T emperature (oC)

VFB2 Reference Voltage deviation (%)

-1.0 %

-0.8 %

-0.6 %

-0.4 %

-0.2 %

0.0%

0.2%

0.4%

0.6%

0.8%

1.0%

0102030405060708090100

-1. 0 %

-0. 8 %

-0. 6 %

-0. 4 %

-0. 2 %

0.0%

0.2%

0.4%

0.6%

0.8%

1.0%

0102030405060708090100

Note : The Referance Voltage(V

REF

) Deviation is

V

REF(TJ

) - V

REF

(25oC)

V

REF

(25oC)

x 100%

Switching Frequency ( kHz )

1

10

100

1000

10000

50 150 250 350 450 550 650 750

RT ( kΩ )

RT pull down to GND

to +12V RT pull up

Copyright  ANPEC Electronics Corp. Rev. A.1 - May, 2001

APW7036

www.anpec.com.tw8

Package Information

SO – 300mil ( Reference JEDEC Registration MS-013)

Millimeters Variations- D Inches Variations- D

Dim

Min. Max. Variations Min. Max.

Dim

Min. Max. Variations Min. Max.

A2.35

2.65

SO-16

10.10 10.50

A 0.093 0.1043 SO-16 0.398 0.413

A1

0.10 0.30

SO-18

11.35 11.76

A1 0.004 0.0120 SO-18 0.447 0.463

B

0.33 0.51

SO-20

12.60 13

B 0.013 0.020 SO-20 0.496 0.512

D See variations SO-24

15.20 15.60

D See variations SO-24 0.599 0.614

E

7.40 7.60

SO-28

17.70 18.11

E 0.2914 0.2992 SO-28 0.697 0.713

e 1.27BSC SO-14

8.80 9.20

e 0.050BSC SO-14 0.347 0.362

H

10 10.65

H 0.394 0.419

L

0.40 1.27

L 0.016 0.050

N See variations N See variations

φ

10°8

°φ

10°8

°

N

12

3

EH

D

L

GAUGE

PLANE

1

e

B

A1

A

Copyright  ANPEC Electronics Corp. Rev. A.1 - May, 2001

APW7036

www.anpec.com.tw9

Classification Reflow Profiles

Package Reflow Conditions

Refolw Condition (IR/ Convection or VPR Reflow)

Physical Specifications

Terminal Material Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb) Lead Solderability Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3. Packaging 1000 devices per reel

Convection or IR/ Convection VPR

Average ramp-up rate(183°C to Peak) 3°C/second max. 10 °C /second max. Preheat temperature 125 ± 25°C)

120 seconds max.

Temperature maintained above 183°C

60 ~ 150 seconds

Time within 5°C of actual peak temperature

10 ~ 20 seconds 60 seconds

Peak temperature range

220 +5/-0°C or 235 +5/-0°C 215~ 219°C or 235 +5/-0°C

Ramp-down rate

6 °C /second max. 10 °C /second max.

Time 25°C to peak temperature

6 minutes max.

pkg. thickness ≥≥≥≥ 2.5mm and all bags

pkg. thickness < 2.5mm and pkg. volume ≥≥≥≥ 350 mm³

pkg. thickness < 2.5mm and pkg. volume < 350mm³

Convection 220 +5/-0 °C Convection 235 +5/-0 °C VPR 215-219 °C VPR 235 +5/-0 °C IR/Convection 220 +5/-0 °C IR/Convection 235 +5/-0 °C

Reference JEDEC Standard J-STD-020A APRIL 1999

Pre-heat temperature

183 C

Peak temperature

Time

°

temperature

Copyright  ANPEC Electronics Corp. Rev. A.1 - May, 2001

APW7036

www.anpec.com.tw10

Tape & Reel Dimensions

Reliability test program

Test item Method Description

SOLDERABILITY MIL-STD-883D-2003

245°C , 5 SEC

HOLT MIL-STD-883D-1005.7

1000 Hrs Bias @ 125 °C

PCT JESD-22-B, A102

168 Hrs, 100 % RH , 121°C

TST MIL-STD-883D-1011.9

-65°C ~ 150°C, 200 Cycles ESD MIL-STD-883D-3015.7 VHBM > 2KV, VMM > 200V Latch-Up JESD 78 10ms , Itr > 100mA

t

Ao

E

W

Po

P

Ko

Bo

D1

D

F

P1

A

J

B

T2

T1

C

Applicat io n

A B C J T1 T2 W P E

SOP-20

330±162 ± 1.5 12.75 ±0.15

2 + 0.6 24.4 +0.2

2± 0.2

24 + 0.3

- 0.1

12± 0.1 1.75± 0.1

Application

F D D1 Po P1 Ao Bo Ko t

SOP-20

11.5 ± 0.1

1.5+0.1 1.5+0.25

4.0 ± 0.1 2.0 ± 0.1 8.2 ± 0.1 1 3± 0.1 2.5± 0.1 0.35±0.013

(mm)

Copyright  ANPEC Electronics Corp. Rev. A.1 - May, 2001

APW7036

www.anpec.com.tw11

Cover Tape Dimensions

Customer Service

Ca rrier Wid th

24

Cover Tape Width

21.3



Anpec Electronics Corp.

Head Office :

5F, No. 2 Li-Hsin Road, SBIP, Hsin-Chu, T aiwan, R.O.C. T el : 886-3-5642000 Fax : 886-3-5642050

Taipei Branch :

7F, No. 137, Lane 235, Pac Chiao Rd., Hsin Tien City, Taipei Hsien, Taiwan, R. O. C. T el : 886-2-89191368 Fax : 886-2-89191369