LCS700LG datasheet(21/30 Pages) POWERINT

21 / 30 page

Rev. G 05/15

LCS700-708

www.power.com

Parameter

Symbol

Conditions

SOURCE = 0 V;

J = -40 °C to 125 °C

(D)

CC = 12 V, VCCH = 12 V

(Unless Otherwise Specified)

Min

Typ

Max

Units

VCCH Supply Undervoltage Lockout

VCC Start Threshold

UVLO(+)

Device exits UVLO state when V

CC exceeds

UVLO+, T

J = 0 to 100 °C

10.5

11.4

VCC Shutdown Thresh-

old

UVLO(-)

Device enters UVLO state when V

CC falls below

UVLO+, T

J = 0 to 100 °C

9.1

9.5

10.5

VCC Start-Up/

Shutdown Hysteresis

UVLO(HYST)

J = 0 to 100 °C

0.7

1.0

1.2

VCCH Start Threshold

UVLO(H+)

Driver exits UVLO state when V

CCH exceeds

UVLOH+

8.2

8.5

8.9

VCCH Shutdown Thresh-

old

UVLO(H-)

Driver enters UVLO state when V

CCH falls

below UVLOH-

7.2

7.5

7.9

VCCH Start-Up/Shut-

down Hysteresis

UVLO(H)HYST

0.8

1.0

1.2

High-Voltage Supply Undervoltage/Overvoltage Enable

OV/UV Overvoltage

Shutdown Threshold

OV(H)

Overvoltage assertion threshold

129

131

133

% of V

SD(H)

OV/UV Overvoltage

Recovery Threshold

OV(L)

Overvoltage de-assertion threshold

124

126

128

% of V

SD(H)

OV/UV Undervoltage

Start Threshold

SD(H)

Undervoltage de-assertion threshold

2.35

2.40

2.45

OV/UV Undervoltage

Shutdown Threshold

SD(L)

Undervoltage assertion threshold

% of V

SD(H)

OV/UV Pin

Input Resistance

IN(OVUV)

OV/UV pin resistance to G

J = 25 °C

4.0

5.0

6.0

OV/UV Pin Input

Resistance Temperature

Coefficient

IN(OVUVTC)

-0.4

%/°C

Reference

Reference Voltage

REF

REF = 4 mA

3.20

3.40

3.50

Current Source Capabil-

ity of VREF Pin

REF

REF Capacitance

REF

Required external coupling on VREF pin

LLC Oscillator

Frequency Range

RANGE

1000

kHz

Accuracy of Minimum

Frequency Limit

MIN(ACC)

FB = 37.9 kW to VREF , 180 kHz

-5.0

5.0

MIN(ACL)

FB = 154 kW to VREF , 48 kHz

J = 25 °C

-7.5

7.5

Accuracy of Maximum

Frequency Limit

MAX(ACC)

FB = IDT/BF, RFMAX = 12.5 kW,

MAX = 510 kHz, TJ = 0 to 100 °C

-7.5

7.5

Duty Balance

LLC

Duty symmetry of the half-bridge waveform,

FB = 4.7 nF, CDT/BF = 4.7 nF, 250 kHz

Use recommended layout

Dead-TimeB

FMAX = 7 kW, RBURST = 39.6 kW

330

DT/BF Control

Current Range

DT/BF

430

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