Maxim MAX5003ESE, MAX5003EEE, MAX5003CSE, MAX5003CEE, MAX5003C-D Datasheet

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General Description

The MAX5003 high-voltage switching power-supply
controller has all the features and building blocks need­ed for a cost-effective flyback and forward voltage­mode control converter. This device can be used to
design both isolated and nonisolated power supplies
with multiple output voltages that operate from a wide
range of voltage sources. It includes a high-voltage
internal start-up circuit that operates from a wide 11V to
110V input range. The MAX5003 drives an external N­channel power MOSFET and has a current-sense pin
that detects overcurrent conditions and turns off the
power switch when the current-limit threshold is
exceeded. The choice of external power MOSFET and
other external components determines output voltage
and power.

The MAX5003 offers some distinctive advantages: soft­start, undervoltage lockout, external frequency synchro­nization, and fast input voltage feed-forward. The
device is designed to operate at up to 300kHz switch­ing frequency. This allows use of miniature magnetic
components and low-profile capacitors. Undervoltage
lockout, soft-start, switching frequency, maximum duty
cycle, and overcurrent protection limit are all adjustable
using a minimum number of external components. In
systems with multiple controllers, the MAX5003 can be
externally synchronized to operate from a common sys­tem clock.

Warning: The MAX5003 is designed to operate with
high voltages. Exercise caution.

The MAX5003 is available in 16-pin SO and QSOP pack­ages. An evaluation kit (MAX5003EVKIT) is also available.

Applications

Telecommunication Power Supplies

ISDN Power Supplies

+42V Automobile Systems

High-Voltage Power-Supply Modules

Industrial Power Supplies

Features

♦ Wide Input Range: 11V to 110V

♦ Internal High-Voltage Startup Circuit

♦ Externally Adjustable Settings

Output Switch Current Limit
Oscillator Frequency
Soft-Start
Undervoltage Lockout
Maximum Duty Cycle

♦ Low External Component Count

♦ External Frequency Synchronization

♦ Primary or Secondary Regulation

♦ Input Feed-Forward for Fast Line-Transient

Response

♦ Precision ±2.5% Reference over Rated

Temperature Range

MAX5003

High-Voltage PWM

Power-Supply Controller

________________________________________________________________ Maxim Integrated Products 1

19-1555; Rev 0; 12/99

PART

MAX5003CEE

MAX5003CSE

MAX5003EEE -40°C to +85°C

0°C to +70°C

0°C to +70°C

TEMP. RANGE PIN-PACKAGE

16 QSOP

16 Narrow SO

16 QSOP

EVALUATION KIT

AVAILABLE

Note A: Dice are designed to operate over a -40°C to +140°C
junction temperature (T

j

) range, but are tested and guaranteed at

TA= +25°C.

Pin Configuration

Ordering Information

MAX5003ESE -40°C to +85°C 16 Narrow SO

MAX5003C/D (Note A) Dice

TOP VIEW

1

V+ V

INDIV

2

ES

3

4

FREQ

SS

5

REF

6

CON

7

COMP

8

QSOP/Narrow SO

16

DD

V

15

CC

NDRV

14

MAX5003

13

12

11

10

9

PGND

CS

AGND

MAXTON

FB

MAX5003

High-Voltage PWM
Power-Supply Controller

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(V+ = VES= VDD= +12V, V

INDIV

= 2V, V

CON

= 0, R

FREQ

= R

MAXTON

= 200kΩ, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical

values are at T

A

= +25°C.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

V+ to GND ............................................................-0.3V to +120V

ES to GND ..............................................................-0.3V to +40V

VDDto GND............................................................-0.3V to +19V

VCCto GND.........................................................-0.3V to +12.5V

MAXTON, COMP, CS, FB, CON to GND..................-0.3V to +8V

NDRV, SS, FREQ to GND...........................-0.3V to (V

CC

+ 0.3V)

I

NDIV

, REF to GND.................................................-0.3V to +4.5V

VCC, VDD, V+, ES Current ................................................±20mA

NDRV Current, Continuous...............................................±25mA

NDRV Current, ≤ 1µs .............................................................±1A

CON and REF Current ......................................................±20mA

All Other Pins ....................................................................±20mA

Continuous Power Dissipation (T

A

= +70°C)

16-Pin SO (derate 9.5mW/°C above +70°C)...............762mW

16-Pin QSOP (derate 8.3mW/°C above +70°C)..........667mW

Maximum Junction Temperature (TJ) ..............................+150°C

Operating Temperature Ranges

MAX5003C_E ....................................................0°C to +70°C

MAX5003E_E ..................................................-40°C to +85°C

Operating Junction Temperature (T

J

) .............................+125°C

16-Pin SO θJA.................................................................105°C/W

16-Pin QSOP θ

JA

............................................................120°C/W

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

I

REF

= 0 to 1mA

No load

V+ = VES, VDD= 18.75

I

NDRV

= 50 mA

V

INDIV

= 0, V+ = 110V, VES= VDD=

unconnected

I

NDRV

= 50 mA

V

NDRV

= V

CC

V

NDRV

= 0, VCCsupported by VCCcapacitor

V+ = 36V, ES = unconnected,
VDD= 18.75V

VCCfalling

V+ = 36V, IV+< 75µA,
ES = unconnected

V+ = VES= 36V, I

NDRV

= 7.5mA

V+ = 110V, VDD= unconnected

V+ = 36V, IDD= 0 to 7.5mA,
ES = unconnected

mV

520

∆V

REF

REF Voltage Regulation

V

2.905 3.000 3.098

V

REF

REF Output Voltage

Ω

1

R

OL

NDRV Resistance Low

Ω

412

R

OH

NDRV Resistance High

mA

1000

Peak Sink Current

mA

570

Peak Source Current

V

6.3

V

CCLO

VCCUndervoltage
Lockout Voltage

V

CC

VCCOutput Voltage

mA

1.2

I

DD

µA

35 75

I+Shutdown Current

Supply Current

V

7.4 12

V

10.75

V

TO

VDDRegulator Turn-Off Voltage

V

10.75 18.75

V

DD

VDDInput Voltage Range

V

25

V

10.8 36

V

ESI

ESInput Voltage (Note 1)

V

36

V

ESO

ESOutput Voltage

V

9 9.75 10.5

V

DD

VDDOutput Voltage

CONDITIONS UNITSMIN TYP MAXSYMBOL PARAMETER

VDD= unconnected, V+ = VES, I

NDRV

= 7.5mA

V110

V+V+ Input Voltage (Note 1)

ES= VDD= uncon­nected

REFERENCE

OUTPUT DRIVER

CHIP SUPPLY (VCC)

PREREGULATOR/START-UP

SUPPLY CURRENT

I

NDRV

= 2mA

I

NDRV

= 5mA

MAX5003

High-Voltage PWM

Power-Supply Controller

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(V+ = VES= VDD= +12V, V

INDIV

= 2V, V

CON

= 0, R

FREQ

= R

MAXTON

= 200kΩ, TA= T

MIN to TMAX

, unless otherwise noted. Typical

values are at T

A

= +25°C.)

(Note 2)

V

FREQ

= 5V, V

CON

= 3.0V

V

CON

= 3.0V

V

CON

= 3.0V

From end of blanking time 25mV overdrive

0 < VCS< 0.1V

V

INDIV

= 1.28V

FB = COMP, V

CON

= 1.5V

V+ = VES= VDD=

10.8V and 18.75V

At COMP

At COMP

I

COMP

= 5µA; V

COMP

= 0.5V, 2.5V

R

LOAD

= 200kΩ, C

LOAD

= 100pF

A

VOL

= 1V/V, C

LOAD

= 100pF

VFB= 1.5V

kHz

200 1200

f

FREQ

FREQ Range

µs

813

t

EXT

External Oscillator Maximum
Low Time

µA

1

I

OL

FREQ Output Low

V

2.7

V

IH

FREQ Input High

V

0.8

V

IL

FREQ Input Low

µA

-1 0.01 +1

INDIV Bias Current

mV

125

V

HYST

INDIV Hysteresis

1.23 1.32 1.45

V

1.15 1.20 1.25

V

INDIVLO

INDIV Undervoltage Lockout

ppm/°C

100

TC

FB

FB V

SET

Tempco

µA

-1 0.1 +1

I

FB

FB Bias Current

ns

70

t

B

CS Blanking Time

ns

240

t

D

µA

-1 +1

I

CS

CS Input Bias Current

Overcurrent Delay

V

1.448 1.485 1.522

V

SET

FB Regulation Voltage

V

3.00

V

COMPH

Output Clamp High

V

0.25

V

COMPL

Output Clamp Low

dB

60 80

A

V

Voltage Gain

MHz

1.2

BWUnity-Gain Bandwidth

degrees

65

φ

Phase Margin

fS = 1/4 f

FREQ

ns

150

FREQ HI/LO Pulse Width

kHz

50 300

f

S

Frequency Range

CONDITIONS UNITS MIN TYP MAXSYMBOLPARAMETERS

V

FREQ

= 1.5V

V

FREQ

= 0

µA

1

I

OL

FREQ Output Current Low

µA

300

I

OH

FREQ Output Current High

kHz

80 100 120

Oscillator Frequency

kΩ

50 500

R

FREQ

FREQ Resistor Range

V

INDIV

= 1.25V %

75

Maximum Programmable
Duty Cycle

V

CON

= 1.25V mV

80 100 120

V

CS

CS Threshold Voltage

MAXIMUM DUTY CYCLE (MAXTON)

MAIN OSCILLATOR—INTERNAL MODE

MAIN OSCILLATOR—EXTERNAL MODE

UNDERVOLTAGE LOCKOUT

FEEDBACK INPUT AND SET POINT

ERROR AMPLIFIER

CURRENT LIMIT

V

INDIV

falling

V

INDIV

rising

0.8

-0.4

-0.6

0

-0.2

0.6

0.4

0.2

0.8

0-20 20 40 60 80 100

FB SET-POINT VOLTAGE CHANGE

vs. TEMPERATURE

MAX5003-01

TEMPERATURE (°C)

FB SET-POINT VOLTAGE CHANGE (%)

-0.100

-0.050

-0.075

0

-0.025

0.075

0.050

0.025

0.100

11 1312 14 15 16 17 18

FB SET-POINT VOLTAGE CHANGE

vs. SUPPLY VOLTAGE

MAX5003-02

VDD (V)

FB SET-POINT VOLTAGE CHANGE (%)

-1.20

-0.80

-1.00

-0.40

-0.60

0.20

0

-0.20

0.40

-40 0-20 20 40 60 80 100

SWITCHING FREQUENCY CHANGE

vs. TEMPERATURE

MAX5003-03

TEMPERATURE (°C)

FREQUENCY CHANGE (%)

Typical Operating Characteristics

(VDD= +12V, R

FREQ

= 200kΩ, R

MAXTON

= 200kΩ, TA= +25°C, unless otherwise noted.)

MAX5003

High-Voltage PWM
Power-Supply Controller

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(V+ = V

ES

=

VDD= +12V, V

INDIV

= 2V, V

CON

= 0, R

FREQ

= R

MAXTON

= 200kΩ, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical

values are at T

A

= +25°C.)

Note 1: See the Typical Operating Characteristics for preregulator current-to-voltage characteristics.
Note 2: Maximum time FREQ can be held below V

IL

and still remain in external mode.

Note 3: Feed-forward Ratio = Duty cycle at (V

INDIV

= 1.5V)/Duty cycle at (V

INDIV

= 1.875V)

Note 4: Occurs at start-up and until V

REF

is valid.

CONDITIONS UNITS MIN TYP MAXSYMBOLPARAMETERS

Minimum On-Time

200

ns

SS Source Current VSS= 0.5V, VDD= unconnected, V

CON

= 1.5V

3.4 5.5 9

µA

SS Sink Current V

SS

= 0.4V (Note 4)

10

mA

SS Time

0.45

s/µF

CON Bias Current I

CON

V

CON

= 0.5V and 2.5V

-1 0.01 1

µA

R

MAXTON

= 200kΩ, V

INDIV

= 1.25V µs

7.5

t

ON

Maximum On-Time Range

V

INDIV

= 1.875V V

0.48 0.5 0.53

RAMP Voltage Low

V

2.5

RAMP Voltage High

V

INDIV

stepped from 1.5V to 1.875V, V

CON

=

3.0V (Note 3)

0.72 0.8 0.88

Input Voltage Feed Forward
Ratio

kΩ50 500R

MAXTON

MAXTON Resistor Range

PWM COMPARATOR

SOFT-START

PWM OSCILLATOR

MAX5003

High-Voltage PWM

Power-Supply Controller

_______________________________________________________________________________________ 5

Typical Operating Characteristics (continued)

(VDD= +12V, R

FREQ

= 200kΩ, R

MAXTON

= 200kΩ, TA= +25°C, unless otherwise noted.)

V+ INPUT CURRENT vs. VOLTAGE

3.0

2.5

2.0

1.5

+ (mA)

V

I

1.0

0.5
V

= V

COMP

SWITCHING

= V

FB

V+ (V)

CON

0

20 6040 80 100 120

ERROR AMP FREQUENCY RESPONSE

70

60

50

40

30

20

GAIN (dB)

10

0

-10

-20

0.1k 1k 10k 100k 1M 10M

GAIN

FREQUENCY (Hz)

MAX5003-07

PHASE

MAX5003-04

0

-20

-40

-60

-80

-100

-120

-140

-160

-180

2.50

2.00

1.50

+ (mA)

V

I

1.00

0.50

0

400

350

300

250

200

150

PHASE (degrees)

FREQUENCY (kHz)

100

50

0

V+ INPUT CURRENT vs. TEMPERATURE

V

= V

CON

SWITCHING
V+ = 110V

-40 0-20 20 40 60 80 100

= V

COMP

FB

TEMPERATURE (°C)

SWITCHING FREQUENCY AND PERIOD

vs. R

FREQ

FREQUENCY

PERIOD

0 100 200 300

(kΩ)

R

FREQ

400

MAX5003-08

500

MAX5003-05

40

30

20

PERIOD (µs)

10

0

MAXIMUM DUTY CYCLE vs. V

80

70

60

50

40

30

DUTY CYCLE (%)

20

V

CLAMPED HIGH

CON

100kΩ

V

INDIV

10

0

123

V+ SHUTDOWN CURRENT

vs. TEMPERATURE

40

V+ = 110V

39

38

37

36

35

+ (µA)

V

I

34

33

32

31

30

= 0

V

INDIV

= UNCONNECTED

V

DD

-40 0-20 20 40 60 80 100
TEMPERATURE (°C)

400kΩ

(V)

INDIV

300kΩ

200kΩ

PARAMETER IS

R

MAXTON

4

MAX5003-06

5

MAX5003-09

V+ CURRENT IN BOOTSTRAPPED

OPERATION vs. TEMPERATURE

28.0
V+ = 110V

= 1.5V

V

INDIV

27.5

27.0

+ (µA)

V

I

26.5

26.0

-50 0 50 100
TEMPERATURE (°C)

MAX5003-10

(V)
V

10

9

8

7

6

5

CC

4

3

2

1

0

VCC LOAD REGULATION

V+ = 50V TO 110V

V+ = 12V

V+ = 13V

V+ = 14V

V+ = 15V

ES = UNCONNECTED

= UNCONNECTED

V

DD

0 5 10 15 20

ICC (mA)

MAX5003-11