NCP1396D datasheet, PDF - EEWORLD Datasheet

NCP1396A, NCP1396B

High Performance Resonant

Mode Controller featuring

High- Voltage Drivers

-

The NCP1396 A/B offers everything needed to build a reliable and

rugged resonant mode power supply. Its unique architecture includes

a 500 kHz Voltage Controlled Oscillator whose control mode brings

flexibility when an ORing function is a necessity, e.g. in multiple

feedback paths implementations. Thanks to its proprietary

high- voltage technology, the controller welcomes a bootstrapped

-

MOSFET driver for half- bridge applications accepting bulk voltages

-

up to 600 V. Protections featuring various reaction times, e.g.

immediate shutdown or timer- based event, brown- out, broken

-

opto- coupler detection etc., contribute to a safer converter design,

-

without engendering additional circuitry complexity. An adjustable

deadtime also helps lowering the shoot- through current contribution

-

as the switching frequency increases.

Features

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MARKING

DIAGRAMS

16

1

SO- 16, LESS PIN 13

-

D SUFFIX

CASE 751AM

16

NCP1396xG

AWLYWW

1



High- frequency Operation from 50 kHz up to 500 kHz

-

600 V High- Voltage Floating Driver

-

Selectable Minimum Switching Frequency with

3%

Accuracy

Adjustable Deadtime from 100 ns to 2

ms.

Startup Sequence via an Adjustable Soft- start

-

Brown- out Protection for a Simpler PFC Association

-

Latched Input for Severe Fault Conditions, e.g. Over Temperature

or OVP

Timer- based Input with Auto- recovery Operation for Delayed

-

Event Reaction

Enable Input for Immediate Event Reaction or Simple ON/OFF

Control

V

CC

Operation up to 20 V

Low Startup Current of 300

mA

1 A / 0.5 A Peak Current Sink / Source Drive Capability

Common Collector Optocoupler Connection for Easier ORing

Internal Temperature Shutdown

B Version features 10 V V

CC

Startup Threshold

These are Pb- Free Devices

-

Flat Panel Display Power Converters

High Power AC/DC Adapters for Notebooks

Industrial and Medical Power Sources

Offline Battery Chargers

x

A

WL

Y

WW

G

= A or B

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb-

-Free Package

PIN CONNECTIONS

CSS 1

Fmax 2

Ctimer 3

Rt 4

BO 5

FB 6

DT 7

Fast Fault 8

(Top View)

12 VCC

11 Mlower

10 GND

9

Slow Fault

16 Vboot

15 Mupper

14 HB

Typical Applications

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 24 of this data sheet.



Semiconductor Components Industries, LLC, 2010

November, 2010 - Rev. 7

1

Publication Order Number:

NCP1396/D

NCP1396A, NCP1396B

HV

FB

U2A

U3A

1

2

3

4

OVP

R17

R8

R24

R20

M1

R10

C12

D8

R21

R11

Slow Input

D9

M2

L1

R23

+

C6

D4

U5

16

15

14

Vout

D1

+

C2

R4

R12

Rt

5

6

7

12

11

10

R5

FB

R1

OVP

R7

8

9

Fmax

C9

C8

Fast

Input

C10

D3

C11

+

C7

C13

T1

D2

U2B

C4

U3B

D6

D7

C14

R22

R16

C1

U1

R3

C3

R2

R19

Soft-

-

start

R9 R14

Timer

R18

R13

BO

R6

Skip

Selection

DT

Figure 1. Typical Application Example

PIN FUNCTION DESCRIPTION

Pin No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Pin Name

CSS

Fmax

Ctimer

Rt

BO

FB

DT

Fast Fault

Slow Fault

GND

Mlower

V

CC

-

HB

Mupper

Vboot

Function

Soft-

-start

Frequency clamp

Timer duration

Timing resistor

Brown-

-Out

Feedback

Dead-

-time

Quick fault detection

Slow fault detection

Analog ground

Low side output

Supplies the controller

-

Half-

-bridge connection

High side output

Bootstrap pin

Select the soft-

-start duration

A resistor sets the maximum frequency excursion

Sets the timer duration in presence of a fault

Connecting a resistor to this pin, sets the minimum oscillator frequency

reached for VFB = 1 V

Detects low input voltage conditions. When brought above Vlatch, it fully

latches off the controller.

Injecting current in this pin increases the oscillation frequency up to Fmax.

A simple resistor adjusts the dead-

-time width

Fast shut-

-down pin. Upon release, a clean startup sequence occurs. Can be

used for skip cycle purposes.

When asserted, the timer starts to countdown and shuts down the controller

at the end of its time duration.

-

Drives the lower side MOSFET

The controller accepts up to 20 V

-

Connects to the half-

-bridge output

Drives the higher side MOSFET

The floating V

CC

supply for the upper stage

Pin Description

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2

NCP1396A, NCP1396B

Vdd

Temperature

Shutdown

S

D

Q

Clk

R

DT Adj.

50% DC

FF

VCC

Management

Mupper

Q

Vref

V

BOOT

Imin

Vfb



Vfb_off

Vref

Rt

C

I = Imax for Vfb = 5.3 V

I = 0 for Vfb < Vfb_min

Vdd

IDT

+

-

+

BO

Reset

Imax

Vfb = 5

Vdd

Vref

Itimer

Fmax

If FAULT Itimer else 0

Timer

PON

Reset

SS

Fault

Timeout

Fault

Fast

Fault

UVLO

HB

+

-

+

Vref

Level

Shifter

Timeout

Fault

NC

Vdd

PON

Reset

Fault

V

CC

Fault

ISS

SS

FB

G=1

+

-

Mlower

> 0 only

V = V(FB) - Vfb_min

-

Vdd

RFB

+

Vfb_fault

+

-

+

Vfb_min

-

Vref

+

Deadtime

Adjustment

+

Vref Fault

20 ns Noise

Filter

GND

Fast

Fault

DT

Vdd

IDT

IBO

20

ms

Noise

Filter

Q

S

20

ms

Noise

Filter

Q

R

PON Reset

BO

+

VBO

+

-

+

Vlatch

+

-

Slow

Fault

+

Vref Fault

+

-

Figure 2. Internal Circuit Architecture

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3

NCP1396A, NCP1396B

MAXIMUM RATINGS

Rating

High Voltage bridge pin, pin 14

Floating supply voltage

High side output voltage

Low side output voltage

Allowable output slew rate

Power Supply voltage, pin 12

Maximum voltage, all pins (except pin 11 and 10)

Thermal Resistance - Junction- -Air, SOIC version

-

-to-

Operating Junction Temperature Range

Maximum Junction Temperature

Storage Temperature Range

ESD Capability, Human Body Model (All pins except HV Pins)

ESD Capability, Machine Model

Symbol

VBRIDGE

VBOOT-

-

VBRIDGE

VDRV_HI

VDRV_LO

dVBRIDGE/dt

V

CC

-

R

θJA

T

J

T

JMAX

T

STG

-

Value

- to 600

-1

0 to 20

VBRIDGE-

-0.3 to

VBOOT+0.3

-

-0.3 to V

CC

+ 0.3

50

20

-

-0.3 to 10

130

-

-40 to +125

+150

-

-60 to +150

2

200

Unit

V

V/ns

V

C/W

C

kV

V

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

1. This device series contains ESD protection and exceeds the following tests:

Human Body Model 2000V per JESD22-

-A114-

-B

Machine Model Method 200V per JESD22-

-A115-

-A.

2. This device meets latch-

-up tests defined by JEDEC Standard JESD78.

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4

NCP1396A, NCP1396B

ELECTRICAL CHARACTERISTICS

(For typical values T

J

= 25C, for min/max values T

J

= -

-40C to +125C, Max T

J

= 150C, V

CC

= 12 V, unless otherwise noted.)

Characteristic

SUPPLY SECTION

Turn-

-on threshold level, V

CC

going up – A version

Turn-

-on threshold level, V

CC

going up – B version

Minimum operating voltage after turn-

-on

Startup voltage on the floating section

Cutoff voltage on the floating section

Startup current, V

CC

< VCC

ON

V

CC

level at which the internal logic gets reset

Internal IC consumption, no output load on pin 15/14 – 11/10, Fsw =

300 kHz

Internal IC consumption, 1 nF output load on pin 15/14 – 11/10, Fsw =

300 kHz

Consumption in fault mode (All drivers disabled, V

CC

> V

CC(min)

)

VOLTAGE CONTROL OSCILLATOR (VCO)

Characteristic

Minimum switching frequency, Rt = 18 kΩ on pin 4, Vpin 6 = 0.8 V, DT =

300 ns

Maximum switching frequency, Rfmax = 1.3 kΩ on pin 2, Vpin 6 > 5.3 V,

Rt = 18 kΩ, DT = 300 ns

Feedback pin swing above which

Δf

= 0

Operating duty-

-cycle symmetry

Delay before any driver re-

-start in fault mode

FEEDBACK SECTION

Characteristic

Internal pull-

-down resistor

Voltage on pin 6 below which the FB level has no VCO action

Voltage on pin 6 below which the controller considers a fault

DRIVE OUTPUT

Characteristic

Output voltage rise-

-time @ CL = 1 nF, 10-

-90% of output signal

Output voltage fall-

-time @ CL = 1 nF, 10-

-90% of output signal

Source resistance

Sink resistance

Dead time with R

DT

= 10 kΩ from pin 7 to GND

Maximum dead-

-time with R

DT

= 82 kΩ from pin 7 to GND

Minimum dead-

-time, R

DT

= 3 kΩ from pin 7 to GND

Leakage current on high voltage pins to GND

15-

-14/1

1-

-10

15-

-14/1

1-

-10

15-

-14/1

1-

-10

15-

-14/1

1-

-10

7

14,

15,16

Symbol

T

r

T

f

R

OH

R

OL

T_dead

T_dead-

-max

T_dead-

-min

IHV_LEAK

Min

-

250

-

Typ

40

20

13

5.5

300

2

100

-

Max

-

340

-

5

Unit

ns

Ω

ns

ms

ns

mA

6

Symbol

Rfb

Vfb_min

Vfb_off

Min

-

Typ

20

1.2

0.6

Max

-

Unit

kΩ

V

4

2

6

11-

-15

-

Symbol

Fsw min

Fsw max

FBSW

DC

Tdel

Min

58.2

425

-

48

-

Typ

60

500

5.3

50

20

Max

61.8

575

-

52

-

Unit

kHz

V

%

ms

0C < T

J

< +125C

-

-40C < T

J

< +125C

12

16-

-14

16-

-14

12

VCC

ON

VCC

ON

VCC

(min)

Vboot

ON

Vboot

(min)

Istartup

VCC

reset

ICC1

ICC2

ICC3

12.3

9.5

8.5

8

7.4

-

13.4

10.5

9.5

9

8.4

-

6.5

4

11

1.2

14.3

11.5

10.5

10

9.4

300

350

-

V

mA

V

mA

Symbol

Min

Typ

Max

Unit

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5

NCP1396D

NCP1396D Overview

Preview

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