DC913A datasheet, PDF - EEWORLD Datasheet

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DC913A: Descriptionboard eval for ltc3773euhf; CategoryDevelopment board/suite/development tools; File Size431KB，7 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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board eval for ltc3773euhf

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QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 913

POLYPHASE 3-OUTPUT STEP-DOWN SUPPLY WITH TRACKING

LTC3773EUHF

DESCRIPTION

Demonstration circuit 913 is a high efficiency and

high density supply featuring the 3-output, 3-phase

synchronous buck regulator LTC3773. The input

voltage range of the demo board is designed for 4.5V

to 13.5V, though the LTC3773 controller can take up

to 36V

MAX

Vin. The outputs of this board are

2.5V/15A,1.8V/15A and 1.2V/15A. To minimize input

ripple current and capacitor size, there is 120

phase

clock interleaving among every two phases. The

power up/down tracking of the three output voltages

is programmable. The supply can be synchronized

to an external clock signal.

The critical power components are on the top side of

the PC board and are within a 1.7” x 1.7” “drop-in”

layout area. The small signal components and IC are

on the bottom side of the PC board within a 1” x 1”

board area. The LTC3773EUHF regulator IC is in a

small 5mm x 7mm QFN package with exposed ther-

mal pad for low thermal impedance. An optional 5V

bias supply is stuffed on the board to power the

LTC3773.

Design files for this circuit board are available.

Call the LTC factory.

LTC and LT are registered trademarks of Linear Technology Corporation.

Table 1. Performance Summary (T

= 25°C)

PARAMETER

Input Voltage

Output Voltage V

OUT1

Output Voltage V

OUT2

Output Voltage V

OUT3

Maximum Output Current

Switching frequency

Full Load Efficiency

CONDITION

Typical

OUT1

= 0A to 15A

OUT2

= 0A to 15A

OUT3

= 0A to 15A

VIN = 4.5V-13.5V

4.5V-13.5Vin

= 12V, V

OUT1

= 2.5V, I

OUT1

= 15A

= 12V, V

OUT2

= 1.8V, I

OUT2

= 15A

= 12V, V

OUT3

= 1.2V, I

OUT3

= 15A

VALUE

4.5V-13.5V

2.5V ± 2%

1.8V ± 2%

1.2V ± 2%

15A Each Output

400kHz

90% Typical

88 % Typical

84.5 % Typical

(15V abs_max)

QUICK START PROCEDURE

Demonstration circuit 913 is easy to set up to evaluate the performance of the LTC3773EUHF. Refer to Figure 1

for proper measurement equipment setup and follow the procedure below:

DC913A Related Products

	DC913A	LTC3773EUHF#TRPBF	LTC3773EG#TRPBF	LTC3773EG#PBF	LTC3773EUHF#PBF
Description	board eval for ltc3773euhf	IC REG CTRLR BUCK 38QFN	IC REG CTRLR BUCK 36SSOP	Output current: - Switching operating frequency: 220kHz ~ 560kHz Output type: Transistor Driver Number of output voltage channels: 3 Function type: Step-Down Output configuration: Positive Three outputs, synchronous, three-phase with power up/down tracking function DC/DC controller	Output current: - Switching operating frequency: 220kHz ~ 560kHz Output type: Transistor Driver Number of output voltage channels: 3 Function type: Step-Down Output configuration: Positive Three outputs, synchronous, three-phase with power up/down tracking function DC/DC controller
Brand Name	-	Linear Technology	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	-	conform to	conform to	conform to	conform to
Parts packaging code	-	QFN	SSOP	SSOP	QFN
package instruction	-	HVQCCN, LCC38,.2X.28,20	SSOP, SSOP36,.3	SSOP, SSOP36,.3	HVQCCN, LCC38,.2X.28,20
Contacts	-	38	36	36	38
Manufacturer packaging code	-	UHF	G	G	UHF
Reach Compliance Code	-	compliant	compliant	compliant	compliant
ECCN code	-	EAR99	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	-	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER
control mode	-	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE
Control Technology	-	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION
Maximum input voltage	-	36 V	36 V	36 V	36 V
Minimum input voltage	-	3.3 V	3.3 V	3.3 V	3.3 V
Nominal input voltage	-	5 V	5 V	5 V	5 V
JESD-30 code	-	R-PQCC-N38	R-PDSO-G36	R-PDSO-G36	R-PQCC-N38
JESD-609 code	-	e3	e3	e3	e3
length	-	7 mm	12.8 mm	12.8 mm	7 mm
Humidity sensitivity level	-	1	1	1	1
Number of functions	-	1	1	1	1
Number of terminals	-	38	36	36	38
Maximum operating temperature	-	85 °C	85 °C	85 °C	85 °C
Package body material	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	-	HVQCCN	SSOP	SSOP	HVQCCN
Encapsulate equivalent code	-	LCC38,.2X.28,20	SSOP36,.3	SSOP36,.3	LCC38,.2X.28,20
Package shape	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	-	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	-	260	260	260	260
Certification status	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	-	0.8 mm	2 mm	2 mm	0.8 mm
surface mount	-	YES	YES	YES	YES
Switch configuration	-	PHASE-SHIFT	PHASE-SHIFT	PHASE-SHIFT	PHASE-SHIFT
Maximum switching frequency	-	700 kHz	700 kHz	700 kHz	700 kHz
technology	-	CMOS	CMOS	CMOS	CMOS
Temperature level	-	OTHER	OTHER	OTHER	OTHER
Terminal surface	-	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	-	NO LEAD	GULL WING	GULL WING	NO LEAD
Terminal pitch	-	0.5 mm	0.65 mm	0.65 mm	0.5 mm
Terminal location	-	QUAD	DUAL	DUAL	QUAD
Maximum time at peak reflow temperature	-	30	30	30	30
width	-	5 mm	5.3 mm	5.3 mm	5 mm

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