Rainbow Electronics MAX17036 User Manual

General Description

The MAX17030/MAX17036 are 3/2-phase interleaved
Quick-PWM™ step-down VID power-supply controllers
for IMVP-6.5 notebook CPUs. Two integrated drivers and
the option to drive a third phase using an external driver
such as the MAX8791 allow for a flexible 3/2-phase con­figuration depending on the CPU being supported.

True out-of-phase operation reduces input ripple-current
requirements and output-voltage ripple while easing
component selection and layout difficulties. The Quick­PWM control provides instantaneous response to fast
load-current steps. Active voltage positioning reduces
power dissipation and bulk output capacitance require­ments and allows ideal positioning compensation for tan­talum, polymer, or ceramic bulk output capacitors.

The MAX17030/MAX17036 are intended for bucking
down the battery directly to create the core voltage.
The single-stage conversion method allows this device
to directly step down high-voltage batteries for the
highest possible efficiency.

A slew-rate controller allows controlled transitions
between VID codes. A thermistor-based temperature
sensor provides programmable thermal protection. An
output current monitor provides an analog current out­put proportional to the sum of the inductor currents,
which in steady state is the same as the current con­sumed by the CPU.

Applications

IMVP-6.5 SV and XE Core Power Supplies

High-Current Voltage-Positioned Step-Down
Converters

3 to 4 Li+ Cells Battery to CPU Core Supply
Converters

Notebooks/Desktops/Servers

Features

o Triple/Dual-Phase Quick-PWM Controllers
o 2 Internal Drivers + 1 External Driver
o ±0.5% V

OUT

Accuracy Over Line, Load, and

Temperature

o 7-Bit IMVP-6.5 DAC
o Dynamic Phase Selection Optimizes Active/Sleep

Efficiency

o Transient Phase Overlap Reduces Output

Capacitance

o Transient Suppression Feature (MAX17036 Only)
o Integrated Boost Switches
o Active Voltage Positioning with Adjustable Gain
o Accurate Lossless Current Balance and

Current Limit

o Remote Output and Ground Sense
o Adjustable Output Slew-Rate Control
o Power-Good (IMVPOK), Clock Enable (CLKEN),

and Thermal-Fault (VRHOT) Outputs

o IMVP-6.5 Power Sequencing and Timing

Compliant

o Output Current Monitor (IMON)
o Drives Large Synchronous Rectifier FETs
o 7V to 26V Battery Input Range
o Adjustable Switching Frequency (600kHz max)
o Undervoltage, Overvoltage, and Thermal-Fault

Protection

MAX17030/MAX17036

1/2/3-Phase Quick-PWM

IMVP-6.5 VID Controllers

________________________________________________________________

Maxim Integrated Products

1

Pin Configuration

Ordering Information

19-4577; Rev 0; 4/09

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

EVALUATION KIT

AVAILABLE

PART TEMP RANGE PIN-PACKAGE

MAX17030GTL+ -40°C to +105°C 40 TQFN-EP*

MAX17036GTL+ -40°C to +105°C 40 TQFN-EP*

+

Denotes a lead-free(Pb)/RoHS-compliant package.

*

EP = Exposed pad.

Quick-PWM is a trademark of Maxim Integrated Products, Inc.

TOP VIEW

PGD_IN

CSP1

CSN1

BST1

LX1

31

32

D0

33

D1

34

D2

35

D3

36

D4

37

D5

38

D6

39

40

+

12 4 567

3

CSP3

CSN3

DD

DL1

V

VRHOT

ILIM

DL2

25

CC

V

TIME

DH1

27282930 26 24 23 22

MAX17030
MAX17036

IMON

THRM

THIN QFN

5mm x 5mm

DH2

LX2

BST2

21

8910

FB

FBAC

GNDS

20

19

18

17

16

15

14

13

12

11

PWM3

DRSKP

PWRGD

CLKEN

TON

PSI

DPRSLPVR

SHDN

CSP2

CSN2

MAX17030/MAX17036

1/2/3-Phase Quick-PWM
IMVP-6.5 VID Controllers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

(Note 1)

ELECTRICAL CHARACTERISTICS

(Circuit of Figure 1, VIN= 10V, VCC= VDD= V

SHDN

= V

PGD_IN

= V

PSI

= V

ILIM

= 5V, V

DPRSLPVR

= V

GNDS

= 0, V

CSP_

= V

CSN_

=

1.0000V, FB = FBAC, R

FBAC

= 3.57kΩ from FBAC to CSN_, [D6–D0] = [0101000]; TA= 0°C to +85°C, 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.

VCC, VDDto GND .....................................................-0.3V to +6V

D0–D6, PGD_IN, PSI, DPRSLPVR to GND ...............-0.3V to +6V

CSP_, CSN_, THRM, ILIM to GND............................-0.3V to +6V

PWRGD, CLKEN, VR_HOT to GND..........................-0.3V to +6V

FB, FBAC, IMON, TIME to GND .................-0.3V to (V

CC

+ 0.3V)

SHDN to GND (Note 2)...........................................-0.3V to +30V

TON to GND ...........................................................-0.3V to +30V

GNDS to GND .......................................................-0.3V to +0.3V

DL1, DL2, PWM3, DRSKP to GND .............-0.3V to (V

DD

+ 0.3V)

BST1, BST2 to GND ...............................................-0.3V to +36V

BST1, BST2 to V

DD

.................................................-0.3V to +30V

LX1 to BST1..............................................................-6V to +0.3V

LX2 to BST2..............................................................-6V to +0.3V

DH1 to LX1 ..............................................-0.3V to (V

BST1

+ 0.3V)

DH2 to LX2 ..............................................-0.3V to (V

BST2

+ 0.3V)

Continuous Power Dissipation (40-pin, 5mm x 5mm TQFN)

Up to +70°C ..............................................................1778mW

Derating above +70°C ..........................................22.2mW/°C

Operating Temperature Range .........................-40°C to +105°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +165°C

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

Note 1: Absolute Maximum Ratings valid using 20MHz bandwidth limit.
Note 2: SHDN might be forced to 12V for the purpose of debugging prototype breadboards using the no-fault test mode. Internal

BST switches are disabled as well. Use external BST diodes when SHDN is forced to 12V.

PWM CONTROLLER

Input Voltage Range

FB Output Voltage Accuracy V

Boot Voltage V

Line Regulation Error VCC = 4.5V to 5.5V, VIN = 4.5V to 26V 0.1 %

FB Input Bias Current TA = +25°C -0.1 +0.1 µA

GNDS Input Range -200 +200 mV

GNDS Gain A

GNDS Input Bia s Current I

TIME Regulation Voltage V

TIME Slew-Rate Accurac y

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

FB

BOOT

GNDS

TA = +25°C -0.5 +0.5 µA

GNDS

R

TIME

VCC, V

V

Measured at FB
with respect to
GNDS;
includes load­regulation error
(Note 3)

1.094 1.100 1.106 V

V

R

R
178k (5mV/µs nominal)

Soft-start and soft-shutdown:
R
178k (1.25mV/µs nominal)

DD

7 26

IN

/V

OUT

GNDS

= 147k 1.985 2.000 2.015 V

TIME

= 147k (6.08mV/µs nominal) -10 +10

TIME

= 35.7k (25mV/µs nominal) to

TIME

= 35.7k (6.25mV/µs nominal) to

TIME

DAC codes from

0.8125V to 1.5000V

DAC codes from

0.3750V to 0.8000V

DAC codes from
0 to 0.3625V

0.97 1.00 1.03 V/V

4.5 5.5

-0.5 +0.5 %

-7 +7

-20 +20

-15 +15

-20 +20

V

mV

%

MAX17030/MAX17036

1/2/3-Phase Quick-PWM

IMVP-6.5 VID Controllers

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, VIN= 10V, VCC= VDD= V

SHDN

= V

PGD_IN

= V

PSI

= V

ILIM

= 5V, V

DPRSLPVR

= V

GNDS

= 0, V

CSP_

= V

CSN_

=

1.0000V, FB = FBAC, R

FBAC

= 3.57kΩ from FBAC to CSN_, [D6–D0] = [0101000]; TA= 0°C to +85°C, unless otherwise noted.

Typical values are at T

A

= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

On-Time Accuracy t

Minimum Off-Time t

TON Shutdown Input Current I

BIAS CURRENTS

Quie sc ent Supply Current (VCC) I

Quie sc ent Supply Current (VDD) I

Shutdown Supply C urrent (VCC) I

Shutdown Supply C urrent (VDD) I

FAULT PROTECTION

Output Overvoltage-Protection
Threshold

Output Overvoltage­Propagation Dela y

Output Undervoltage­Protection Threshold

Output Undervoltage­Propagation Dela y

CLKEN Startup Delay and
Boot Time Period

ON

OFF(MIN)

TON,SDN

CC

DD

CC, SDN

DD, SDN

V

OVP

t

OVP

V

UVP

t

UVP

t

BOOT

VIN = 10V,

= 1.0V,

V

FB

measured at
DH1, DH2,
and PWM3
(Note 4)

Measured at DH1, DH2, and PWM3 (Note 4) 300 375 ns

SHDN = GND, VIN = 26V, VCC = VDD = 0
or 5V, T

A

Measured at VCC, V
forced above the regulation point

Mea sured at VDD, V
above the regulation point, T

Mea sured at VCC, SHDN = GND, TA = +25°C 0.01 1 µA

Mea sured at VDD, SHDN = GND, TA = +25°C 0.01 1 µA

Skip mode after output reache s the
regulation voltage or PWM mode;
measured at FB with respect to the voltage
target set by the VID code (see Table 4)

Soft-start, soft-shutdown, skip mode, and
output have not reached the regulation
voltage; measured at FB

Min imum OVP threshold; measured at FB 0.8

FB forced 25mV above trip thresho ld 10 µs

Measured at FB with respect to the voltage
target set by the VID code (see Table 4)

FB forced 25mV below trip threshold 10 µs

Measured from the time when FB reaches
the boot target vo ltage (Note 3)

= +25°C

R
per phase), 167ns nominal

R
per phase), 333ns nominal

R
per phase), 500ns nominal

= 96.75k (600kHz

TON

= 200k (300kHz

TON

= 303.25k (200kHz

TON

DPRSLPVR

DPRSLPVR

= 5V, FB

= 0, FB forced
= +25°C

A

-15 +15

-10 +10

-15 +15

0.01 0.1 µA

3.5 7 mA

0.02 1 µA

250 300 350 mV

1.45 1.50 1.55

-450 -400 -350 mV

20 60 100 µs

%

V

MAX17030/MAX17036

1/2/3-Phase Quick-PWM
IMVP-6.5 VID Controllers

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, VIN= 10V, VCC= VDD= V

SHDN

= V

PGD_IN

= V

PSI

= V

ILIM

= 5V, V

DPRSLPVR

= V

GNDS

= 0, V

CSP_

= V

CSN_

=

1.0000V, FB = FBAC, R

FBAC

= 3.57kΩ from FBAC to CSN_, [D6–D0] = [0101000]; TA= 0°C to +85°C, unless otherwise noted.

Typical values are at T

A

= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

PWRGD Startup Dela y

CLKEN and PWRGD Threshold

CLKEN and PWRGD Delay

CLKEN and PWRGD Transition

Blank ing Time (VID Transitions)

t

BLANK

CLKEN, PWRGD Output
Low Voltage

CLKEN, PWRGD Leakage
Current

CSN1 Pulldown Resi stance in
UVLO and Shutdown

VCC Undervoltage-Lockout
Threshold

V

UVLO(VCC)

THERMAL PROTECTION

VRHOT Trip Threshold

VRHOT Delay t

VRHOT Output On-Resistance R

VRHOT

ON(VRHOT)

VRHOT Leakage Current High-Z state, VRHOT forced to 5V, TA = +25°C 1 µA

THRM Input Leakage I

Thermal-Shutdown Threshold T

THRM

SHDN

V

VALLEY CURRENT LIMIT, DROOP, CURRENT BALANCE, AND CURRENT MONITOR

Current-Limit Threshold Voltage
(Positive)

Current-Limit Threshold Voltage
(Negative) Accuracy

Current-Limit Threshold Voltage
(Zero Crossing)

V

LIMIT

V

LIMIT(NEG) VCSP_

V

ZX

CSP_, CSN_ Common-Mode
Input Range

Measured at startup from the time when
CLKEN goes low

Measured at FB
with respect to the
voltage target set
by the VID code
(see Table 4), 20mV
hysteresis (typ)

FB forced 25mV out side the PWRGD trip
thresholds

Measured from the time when FB reaches
the target voltage (Note 3)

Low state, I

High-Z state, pin forced to 5V, T

SHDN = GND, measured after soft­shutdown completed (DL = low)

Rising edge, 65mV typical hy steresi s,
controller disabled below this level

Measured at THRM with respect to V
falling edge, typical hysteresis = 75mV

THRM forced 25mV below the VRHOT trip
threshold, fall ing edge

SINK

3 6.5 10 m s

Lower threshold,
falling edge

-350 -300 -250

(undervolt age)

Upper threshold,
rising edge

+150 +200 +250

(overvoltage)

10 µs

20 µs

= 3mA 0.4 V

= +25°C 1 µA

A

8 

4.05 4.27 4.48 V

;

CC

29 30 31 %

10 µs

Low state 2 8 

= 0 to 5V, TA = +25°C -0.1 +0.1 µA

THRM

Typical hysteresis = 15°C +160 ° C

V

- V

= 100mV 7 10 13

ILIM

- V

= 500mV 45 50 55

ILIM

20 22.5 25

CC

LIMIT

-4 +4 mV

V

V

CSP_

GND

- V

- V

- V

TIME

CSN_

V

TIME

ILIM = V

, nominally -125% of V

CSN_

, V

LX_

DPRSLPVR

= 5V 0 mV

0 2 V

mV

mV

MAX17030/MAX17036

1/2/3-Phase Quick-PWM

IMVP-6.5 VID Controllers

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, VIN= 10V, VCC= VDD= V

SHDN

= V

PGD_IN

= V

PSI

= V

ILIM

= 5V, V

DPRSLPVR

= V

GNDS

= 0, V

CSP_

= V

CSN_

=

1.0000V, FB = FBAC, R

FBAC

= 3.57kΩ from FBAC to CSN_, [D6–D0] = [0101000]; TA= 0°C to +85°C, unless otherwise noted.

Typical values are at T

A

= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Phase s 2, 3 Di sable Thresho ld Measured at CSP2, CSP3 3

V

CC

- 1VCC -

0.4

V

CSP_, CSN_ Input Current I

CSP

, I

CSN TA

= +25°C -0.2 +0.2 μA

ILIM Input Current I

ILIM

TA = +25°C -0.1 +0.1 μA

TA = +25°C -0.5 +0.5

Droop Amplifier Offset

(1/N) x (V

CSP_

-

V

CSN_

) at I

FBAC

= 0;
 indicates
summation over all
power-up enabled
phases from 1 to N,
N = 3

T

A

= 0°C to +85°C -0.75 +0.75

mV/

phase

Droop Amplifier
Transconductance

G

m(FBAC)

I

FBAC

/[(V

CSP_

- V

CSN_

)];
 indicates summation over all power-up
enabled phases from 1 to N, N = 3,
V

FBAC

= V

CSN_

= 0.45V to 1.5V

393 400 406 μS

Current-Monitor Offset

(1/N) x (V

CSP_

- V

CSN_

) at I

IMON

= 0,
 indicates summation over all power-up
enabled phases from 1 to N, N = 3

-1.1 +1

mV/

phase

Current-Monitor
Transconductance

G

m(IMON)

I

IMON

/[(V

CSP_

- V

CSN_

)];
 indicates summation over all power-up
enabled phases from 1 to N, N = 3,
V

CSN_

= 0.45V to 1.5V

1.552 1.6 1.648 mS

GATE DRIVERS

High state (pullup) 0.9 2.5

DH_ Gate-Driver On-Resistance R

ON(DH)

BST_ - LX_ forced
to 5V

Low state (pulldown) 0.7 2



High state (pullup) 0.7 2

DL_ Gate-Driver On-Resistance R

ON(DL)

Low state (pulldown) 0.25 0.7



DH_ Gate-Driver Source Current I

DH(S OURCE)

DH_ forced to 2.5V,
BST_ - LX_ forced to 5V

2.2 A

DH_ Gate-Driver Sink Current I

DH(S INK)

DH_ forced to 2.5V,
BST_ - LX_ forced to 5V

2.7 A

DL_ Gate-Driver Source Current I

DL(S OURCE)

DL_ forced to 2.5V 2.7 A

DL_ Gate-Driver Sink Current I

DL(S INK)

DL_ forced to 2.5V 8 A

DL_ falling, C

DL_

= 3nF 20

DL_ Transition Time

DL ris ing, C

DL_

= 3nF 20

ns

DH_ falling, C

DH_

= 3nF 20

DH_ Transition Time

DH_ ri sing, C

DH_

= 3nF 20

ns

Internal BST_ Switch
On-Resistance

R

ON(BST) IBST_

= 10mA 10 20 

MAX17030/MAX17036

1/2/3-Phase Quick-PWM
IMVP-6.5 VID Controllers

6 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, VIN= 10V, VCC= VDD= V

SHDN

= V

PGD_IN

= V

PSI

= V

ILIM

= 5V, V

DPRSLPVR

= V

GNDS

= 0, V

CSP_

= V

CSN_

=

1.0000V, FB = FBAC, R

FBAC

= 3.57kΩ from FBAC to CSN_, [D6–D0] = [0101000]; TA= 0°C to +85°C, unless otherwise noted.

Typical values are at T

A

= +25°C.)

ELECTRICAL CHARACTERISTICS

(Circuit of Figure 1, VIN= 10V, VCC= VDD= V

SHDN

= V

PGD_IN

= V

PSI

= V

ILIM

= 5V, V

DPRSLPVR

= V

GNDS

= 0, V

CSP_

= V

CSN_

=

1.0000V, FB = FBAC, R

FBAC

= 3.57kΩ from FBAC to CSN_, [D6–D0] = [0101000]; TA= -40oC to +105°C, unless otherwise noted.)

(Note 5)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

PWM3, DRSKP OUTPUTS

PWM3, DRSKP Output
High Voltages

PWM3, DRSKP Output
Low Voltages

LOGIC AND I/O

Logic-Input High Voltage V

Logic-Input Low Voltage V

Low-Voltage Logic-Input
High Voltage

Low-Voltage Logic-Input
Low Voltage

Logic Input Current

V

V

IH

IL

IHLV

ILLV

I

I

= 3mA

SOURCE

= 3mA 0.4 V

SINK

SHDN, PGD_IN 2.3 V
SHDN, PGD_IN 1.0 V

PSI, D0–D6, DPRSLPVR 0.67 V

PSI, D0–D6, DPRSLPVR 0.33 V

T

= +25°C; SHDN, DPRSLPVR, PGD_IN,

A

PSI, D0–D6 = 0 or 5V

V

DD

0.4V

­ V

-1 +1 µA

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

PWM CONTROLLER

Input Voltage Range

FB Output-Voltage Accuracy

Boot Voltage V

V

FB

BOOT

GNDS Input Range -200 +200 mV

GNDS Gain A

TIME Regulation Voltage V

GNDS

TIME

R

TIME Slew-Rate Accurac y

VCC, V

DD

7 26

V

IN

Measured at
FB with
respect to
GNDS,
includes load­regulation
error (Note 3)

DAC codes from

0.8125V to 1.5000V

DAC codes from

0.3750V to 0.8000V

DAC codes from
0 to 0.3625V

4.5 5.5

-0.75 +0.75 %

-10 +10

-25 +25

1.085 1.115 V

V

/V

OUT

= 147k 1.985 2.015 V

TIME

R

= 147k (6.08mV/µs nominal) -10 +10

TIME

R

= 35.7k (25mV/µs nominal) to

TIME

178k (5mV/µs nominal)

0.95 1.05 V/V

GNDS

-15 +15

Soft-start and soft-shutdown:
R

= 35.7k (6.25mV/µs nominal) to

TIME

-20 +20

178k (1.25mV/µs nominal)

V

mV

%

MAX17030/MAX17036

1/2/3-Phase Quick-PWM

IMVP-6.5 VID Controllers

_______________________________________________________________________________________ 7

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, VIN= 10V, VCC= VDD= V

SHDN

= V

PGD_IN

= V

PSI

= V

ILIM

= 5V, V

DPRSLPVR

= V

GNDS

= 0, V

CSP_

= V

CSN_

=

1.0000V, FB = FBAC, R

FBAC

= 3.57kΩ from FBAC to CSN_, [D6–D0] = [0101000]; TA= -40oC to +105°C, unless otherwise noted.)

(Note 5)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

On-Time Accuracy t

Minimum Off-Time t

BIAS CURRENTS

Quie sc ent Supply Current (VCC) I

FAULT PROTECTION

Output Overvoltage-Protection
Threshold

Output Undervoltage-Protection
Threshold

CLKEN Startup Delay and Boot
Time Period

PWRGD Startup Dela y

CLKEN and PWRGD Threshold

CLKEN, PWRGD Output

Low Voltage

VCC Undervoltage-Lockout
Threshold

THERMAL PROTECTION

VRHOT Trip Threshold

VRHOT Output On-Resistance R

ON

OFF(MIN)

CC

V

OVP

V

UVP

t

BOOT

V

UVLO(VCC)

ON(VRHOT)

VIN = 10V,

= 1.0V,

V

FB

measured at
DH1, DH2,
and PWM3
(Note 4)

Measured at DH1, DH2, and PWM3 (Note 4) 400 ns

Measured at VCC, DPRSLPVR = 5V, FB
forced above the regulation point

Skip mode after output reache s the
regulation voltage or PWM mode;
measured at FB with respect to the voltage
target set by the VID code (see Table 4)

Soft-start, soft-shutdown, skip mode, and
output have not reached the regulation
voltage; measured at FB

Measured at FB with respect to the voltage
target set by the VID code (see Table 4)

Measured from the time when FB reaches
the boot target vo ltage (Note 3)

Measured at startup from the time when
CLKEN goes low

Mea sured at FB
with respect to the
vo ltage target set
by the VID code
(see Table 4),
20mV hysteresi s
(typ)

Low state, I

Rising edge, 65mV typical hy steresi s,
controller disabled below this level

Measured at THRM with respect to V
falling edge, typical hysteresis = 75mV

Low state 8 

SINK

R
per phase), 167ns nominal

R
per phase), 333ns nominal

R
per phase), 500ns nominal

= 3mA 0.4 V

= 96.75k (600kHz

TON

= 200k (300kHz

TON

= 303.25k (200kHz

TON

Lower threshold,
falling edge
(undervolt age)

Upper threshold,
rising edge
(overvoltage)

,

CC

-15 +15

-10 +10

-15 +15

7 mA

250 350 mV

1.45 1.55 V

-450 -350 mV

20 100 µs

3 10 m s

-350 -250

+150 +250

4.05 4.5 V

29 31 %

%

mV

MAX17030/MAX17036

1/2/3-Phase Quick-PWM
IMVP-6.5 VID Controllers

8 _______________________________________________________________________________________

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

VALLEY CURRENT LIMIT, DROOP, CURRENT BALANCE, AND CURRENT MONITOR

V

TIME

- V

ILIM

= 100mV 7 13

V

TIME

- V

ILIM

= 500mV 45 55

Current-Limit Threshold Voltage
(Positive)

V

LIMIT

V

CSP_

- V

CSN_

ILIM = V

CC

20 25

mV

Current-Limit Threshold Voltage
(Negative) Accuracy

V

LIMIT(NEG) VCSP_

- V

CSN_

, nominally -125% of V

LIMIT

-4 +4 mV

CSP_, CSN_ Common-Mode
Input Range

0 2 V

Phase s 2, 3 Di sable Thresho ld Measured at CSP2, CSP3 3

V

CC

-

0.4

V

Droop Amplifier Offset

(1/N) x (V

CSP_

- V

CSN_

) at I

FBAC

= 0;
 indicates summation over all power-up
enabled phases from 1 to N, N = 3

-1 +1

mV/

phase

Droop Amplifier
Transconductance

G

m(FBAC)

I

FBAC

/[(V

CSP_

- V

CSN_

)];  indicates
summation over all power-up enabled
phase s from 1 to N, N = 3,
V

FBAC

= V

CSN_

= 0.45V to 1.5V

390 407 μS

Current-Monitor Offset

(1/N) x (V

CSP_

- V

CSN_

) at I

FBAC

= 0;
 indicates summation over all power-up
enabled phases from 1 to N, N = 3

-1.5 +1.5

mV/

phase

Current-Monitor
Transconductance

G

m(IMON)

I

IMON

/[(V

CSP_

- V

CSN_

)];  indicates
summation over all power-up enabled phase s
from 1 to N, N = 3, V

CSN_

= 0.45V to 1.5V

1.536 1.664 mS

GATE DRIVERS

High state (pullup) 2.5

DH_ Gate-Driver On-Resistance R

ON(DH)

BST_ – LX_
forced to 5V

Low state (pulldown) 2



High state (pullup) 2

DL_ Gate-Driver On-Resistance R

ON(DL)

Low state (pulldown) 0.7



Internal BST_ Switch
On-Resistance

R

ON(BST) IBST-

= 10mA 20 

PWM3, DRSKP OUTPUTS

PWM3, DRSKP Output
High Voltages

I

SOURCE

= 3mA

V

DD

-

0.4V

V

PWM3, DRSKP Output
Low Voltages

I

SINK

= 3mA 0.4 V

LOGIC AND I/O

Logic-Input High Voltage V

IH

SHDN, PGD_IN 2.3 V

Logic-Input Low Voltage V

IL

SHDN, PGD_IN 1.0 V

Low-Voltage Logic-Input
High Voltage

V

IHLV

PSI, D0–D6, DPRSLPVR 0.67 V

Low-Voltage Logic-Input
Low Voltage

V

ILLV

PSI, D0–D6, DPRSLPVR 0.33 V

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, VIN= 10V, VCC= VDD= V

SHDN

= V

PGD_IN

= V

PSI

= V

ILIM

= 5V, V

DPRSLPVR

= V

GNDS

= 0, V

CSP_

= V

CSN_

=

1.0000V, FB = FBAC, R

FBAC

= 3.57kΩ from FBAC to CSN_, [D6–D0] = [0101000]; TA= -40oC to +105°C, unless otherwise noted.)

(Note 5)

Note 3: The equation for the target voltage V

TARGET

is:

V

TARGET

= The slew-rate-controlled version of V

DAC

, where V

DAC

= 0 for shutdown

V

DAC

= V

BOOT

during IMVP-6.5 startup

V

DAC

= V

VID

otherwise (the V

VID

voltages for all possible VID codes are given in Table 4).

In pulse-skipping mode, the output rises by approximately 1.5% when transitioning from continuous conduction to no load.

Note 4: On-time and minimum off-time specifications are measured from 50% to 50% at the DH_ pin, with LX_ forced to 0V, BST_

forced to 5V, and a 500pF capacitor from DH_ to LX_ to simulate external MOSFET gate capacitance. Actual in-circuit times
might be different due to MOSFET switching speeds.

Note 5: Specifications to -40°C and +105°C are guaranteed by design, not production tested.

MAX17030/MAX17036

1/2/3-Phase Quick-PWM

IMVP-6.5 VID Controllers

_______________________________________________________________________________________ 9

Typical Operating Characteristics

(Circuit of Figure 1. VIN= 12V, VCC= VDD= 5V, SHDN = VCC, D0–D6 set for 0.95V, TA= +25°C, unless otherwise specified.)

ELECTRICAL CHARACTERISTICS (continued)

EFFICIENCY vs. LOAD CURRENT

100

(V

90

80

70

60

50

EFFICIENCY (%)

40

30

20

0.1 100

= 0.95V)

OUT(HFM)

7V

LOAD CURRENT (A)

20V

101

MAX17030 toc01

12V

OUTPUT VOLTAGE vs. LOAD CURRENT

1.00

(V

0.95

0.90

OUTPUT VOLTAGE (V)

0.85

0.80
010 70

= 0.95V)

OUT(HFM)

LOAD CURRENT (A)

50 6020 30 40

MAX17030 toc02

EFFICIENCY (%)

EFFICIENCY vs. LOAD CURRENT

90

(V

7V

80

70

60

50

0.1 100

= 0.875V)

OUT(LFM)

20V

LOAD CURRENT (A)

12V

SKIP MODE
PWM MODE

101

MAX17030 toc03

OUTPUT VOLTAGE vs. LOAD CURRENT

0.90

(V

0.89

0.88

0.87

0.86

OUTPUT VOLTAGE (V)

0.85

0.84

0.83

1-PHASE SKIP MODE

2-PHASE PWM MODE

020

= 0.875V)

OUT(LFM)

LOAD CURRENT (A)

400

350

MAX17030 toc04

300

250

200

150

100

SWITCHING FREQUENCY (kHz)

50

15510

0

SWITCHING FREQUENCY

V

OUT(LFM)

05040

vs. LOAD CURRENT

= 0.875V

V

OUT(HFM)

DPRSLPVR = V
DPRSLPVR = GND

3010 20

LOAD CURRENT (A)

= 0.95V

CC

1000

100

MAX17030 toc05

10

1

SUPPLY CURRENT (mA)

0.1

0.01

V

OUT(HFM)

= 0.95V NO-LOAD

SUPPLY CURRENT vs. INPUT VOLTAGE

DPRSLPVR = V

DD

DPRSLPVR = GND

ICC + I

DD

I

IN

15912

I

IN

ICC + I

62118

INPUT VOLTAGE (V)

CC

MAX17030 toc06

MAX17030/MAX17036

1/2/3-Phase-Quick-PWM
IMVP-6.5 VID Controllers

10 ______________________________________________________________________________________

Typical Operating Characteristics (continued)

(Circuit of Figure 1. VIN= 12V, VCC= VDD= 5V, SHDN = VCC, D0–D6 set for 0.95V, TA= +25°C, unless otherwise specified.)

CURRENT BALANCE
vs. LOAD CURRENT

MAX17030 toc07

LOAD CURRENT (A)

SENSE VOLTAGE (mV)

SENSE VOLTAGE DIFFERENCE (mV)

30 4010 20

5

10

15

20

0

-0.1

0

0.1

0.2

-0.2

0706050

V

OUT

= 0.95V

V

CSP1

- V

CSN1

V

CSP2

- V

CSN2

V

CS3

- V

CS1

V

CS2

- V

CS1

V

CSP3

-

V

CSN3

0.8125V OUTPUT

VOLTAGE DISTRIBUTION

MAX17030 toc09

OUTPUT VOLTAGE (V)

SAMPLE PERCENTAGE (%)

0.8085

0.8095

0.8105

0.8115

0.8125

0.8135

0.8145

0.8155

0.8165

0.8175

0.8075

20

10

30

40

50

60

70

0

+85°C
+25°C

SAMPLE SIZE = 100

G

m(FB)

TRANSCONDUCTANCE

DISTRIBUTION

MAX17030 toc10

TRANCONDUCTANCE (µs)

SAMPLE PERCENTAGE (%)

392

394

396

398

400

402

404

406

408

410

390

20

10

30

40

50

60

70

0

+85°C
+25°C

SAMPLE SIZE = 100

G

m(IMON)

TRANSCONDUCTANCE

DISTRIBUTION

MAX17030 toc11

TRANCONDUCTANCE (µs)

SAMPLE PERCENTAGE (%)

1560

1570

1580

1590

1600

1610

1620

1630

1640

1650

1550

15

5

10

20

25

30

35

40

0

+85°C
+25°C

SAMPLE SIZE = 100

I

IMON

100

80

60

IMON (µA)

40

20

0

0605040

vs. LOAD CURRENT

V

= 0.95V

OUT

∑

V

3010 20

CSP - CSN

DPRSLPVR = GND

(mV)

MAX17030 toc08

MAX17030/MAX17036

1/2/3-Phase-Quick-PWM

IMVP-6.5 VID Controllers

______________________________________________________________________________________

11

Typical Operating Characteristics (continued)

(Circuit of Figure 1. VIN= 12V, VCC= VDD= 5V, SHDN = VCC, D0–D6 set for 0.95V, TA= +25°C, unless otherwise specified.)

3.3V
0

3.3V
0

0.95V

0

0

0

0

A. SHDN, 5V/div
B. CLKEN, 10V/div
C. V

3.3V
0

3.3V
0

3.3V
0

0.95V

0

0

0

0

A. SHDN, 5V/div
B. PWRGD, 10V/div
C. CLKEN, 10V/div
D. V

SOFT-START WAVEFORM

(UP TO CLKEN)

200µs/div

, 500mV/div

OUT

SHUTDOWN WAVEFORM

200µs/div

, 500mV/div

OUT

MAX17030 toc12

D. I

, 10A/div

LX1

, 10A/div

E. I

LX2

, 10A/div

F. I

LX3

, 15A

I

OUT

MAX17030 toc14

E. DL1, 10V/div
F. DL2, 10V/div
G. DL3, 10V/div

3.3V
A
B

C

D

E

F

A

B
C

D

E

F

G

3.3V

3.3V

0.95V

59A

0.935V

0.84V

0

0

0

0

0

0

0

7A

SOFT-START WAVEFORM

(UP TO PWRGD)

A. SHDN, 5V/div
B. CLKEN, 6.6V/div
C. PWRGD, 10V/div

, 1V/div

D. V

OUT

1ms/div

LOAD-TRANSIENT RESPONSE

(HFM MODE)

A. I
B. V

= 7A - 59A

OUT

OUT

, 50mV/div

20µs/div

MAX17030 toc13

E. DL1, 10V/div
F. DL2, 10V/div
G. DL3, 10V/div

, 15A

I

OUT

MAX17030 toc15

C. I

, 20A/div

LX1

, 20A/div

D. I

LX2

, 20A/div

E. I

LX3

A

B

C

D

E

F

G

A

B

C

D

E

MAX17030/MAX17036

1/2/3-Phase Quick-PWM
IMVP-6.5 VID Controllers

12 ______________________________________________________________________________________

Pin Description

PIN NAME FUNCTION

Negative Input of the Output Current Sense of Phase 3. This pin should be connected to the

1 CSN3

2 CSP3

3 THRM

4 IMON

5 ILIM

6 TIME

7 VCC Controller Supply Voltage. Connect to a 4.5V to 5.5V source. Bypa ss to GND with 1µF minimum.

8 FB

negative side of the output current-sensing resistor or the filtering capacitor if the DC resistance of
the output inductor is utilized for current sensing.

Positive Input of the Output Current Sense of Phase 3. This pin should be connected to the positive
side of the output current-sensing resistor or the filtering capacitor if the DC resistance of the
output inductor is utilized for current sensing.
To disable phase 3, connect CSP3 to VCC and CSN3 to GND.

Input of Internal Comparator. Connect the output of a resistor- and thermistor-divider (between V
and GND) to THRM. Select the component s such that the voltage at THRM fall s below 1.5V (30% of
V

) at the desired high temperature.

CC

Current Monitor Output Pin. The output current at this pin is:

where G
An external resistor R

where R
Choose R
IMON is high impedance when the MAX17030/MAX17036 are in shutdown.

Current-Limit Adju st Input. The va lley positive current-lim it threshold voltages at V(CSP_,CSN_) are
precise ly 1/10 the different ial voltage V(TIME,ILIM) over a 0.1V to 0.5V range of V(TIME,ILIM). The
valley negative current-limit thresholds are typically -125% of the corresponding valley positive
current-limit thresholds. Connect ILIM to V

22.5mV typ.

Slew-Rate Adjustment Pin. The total resistance R

where R
Thi s “normal” slew rate applies to transitions into and out of the low-power pulse-skipping modes
and to the transition from boot mode to VID. The slew rate for startup and for entering shutdown is
always 1/4 of normal. If the VID DAC inputs are clocked, the slew rate for all other VID transitions
is set by the rate at which they are clocked, up to a maximum slew rate equal to the normal slew
rate defined above.

Feedback Voltage Input. The voltage at the FB pin i s compared with the sle w-rate-controlled target
voltage by the error comparator (fast regulation loop), as well as by the internal voltage integrator
(slow, accurate regulation loop). Having sufficient ripple signal at FB that is in phase with the sum
of the inductor currents is e ss ential for cycle-by-cycle stability.
The external connection s and compensation at FB depend on the desired DC and transient (AC)
droop values. If DC droop = AC droop, then short FB to FBAC. To d isable DC droop, connect FB to the
remote-sensed output voltage through a resistor R and feed forward the FBAC ripple to FB through
capacitor C, where the R x C time constant should be at least 3x the switching period per phase.

M(IMON)

SENSE

TIME

= 1.6mS typical and  denotes summation over al l enabled phases.

IMON

is the value of the effective current-sense res istance.

such that V

IMON

is between 35.7 k and 178k.

IMON

I

= G

IMON

between IMON and GNDS sets the current-monitor output voltage:

= I

V

IMON

does not exceed 900mV at the maximum expected load current I

Slew rate = (12.5mV/µs) x (71.5k/R

LOAD

x R

x V(CSP_,CSN_)

M(IMON)

x G

SENSE

to get the default current-lim it threshold setting of

CC

from TIME to GND sets the internal slew rate:

TIME

M(IMON)

x R

TIME

IMON

)

CC

MAX

.