Linear Technology LTM4611EV Demo Board, 1.5V ≤ VIN ≤ 5.5V, VOUT = 0.8V to 5V @ 15A, DC/DC µModule Regulator DC1588A DC1588A 데이터 시트

제품 코드

DC1588A

LTM4611

4611fb

For more information

www.linear.com/LTM4611

pin FuncTions

(A1-A6, B1-B6, C1-C6): Power Input Pins. Apply input

voltage between these pins and GND pins. Recommend

placing input decoupling capacitance directly between V

pins and GND pins.
V

OUT

(J1-J10, K1-K11, L1-L11, M1-M11): Power Output

Pins. Apply output load between these pins and GND

pins. Recommend placing output decoupling capacitance

directly between these pins and GND pins. Review Table 5.
GND (B7, B9, C7, C9, D1-D6, D8, E1-E7, E9, F1-F9, G1-G9,

H1-H9): Power Ground Pins for Both Input and Output

Returns.
PGOOD (F11, G12): Output Voltage Power Good Indicator.

Open-drain logic output that is pulled to ground when the

output voltage exceeds a ±5% regulation window. Both

pins are tied together internally.
SGND (G11, H11, H12): Signal Ground Pin. Return ground

path for all analog and low power circuitry. Tie a single

connection to the output capacitor GND in the application.

See the layout guidelines in Figure 17.
MODE_PLLIN (A8): Forced Continuous Mode, Burst Mode

Operation, or Pulse-Skipping Mode Selection Pin and

External Synchronization Input to Phase Detector Pin.

Connect this pin to GND to force continuous mode

operation. Connect to INTV

to enable pulse-skip-

ping mode operation. Leaving the pin floating will

enable Burst Mode operation. A clock on this pin will

enable synchronization with forced continuous operation.

See the Applications Information section.
PLLFLTR/f

SET

(B12): Phase-Locked Loop Lowpass

Filter for the Internal Phase Detector. LTM4611’s default

switching frequency is 500kHz. Its switching frequency

can be increased by connecting a resistor from this pin to

INTV

, or decreased by connecting a resistor from this

pin to SGND. See the Applications Information section.

(F12): The Negative Input of the Error Amplifier.

Internally, this pin is connected to V

OUT_LCL

with a 60.4k

precision resistor. Different output voltages can be pro-

grammed with an additional resistor between the V

and

GND pins. In PolyPhase

operation, tying the V

pins

together allows for parallel operation. See the Applications

Information section for details.
TRACK/SS (A9): Output Voltage Tracking Pin and Soft-

Start Inputs. The pin has a 1.4µA pull-up current source.

A capacitor from this pin to ground will set a soft-start

ramp rate. In tracking, the regulator output can be tracked

to a different voltage. The different voltage is applied to

a voltage divider then the slave output’s track pin. This

voltage divider is equal to the slave output’s feedback

divider for coincidental tracking. Tie all TRACK/SS pins

together for parallel operation. See the Applications In-

formation section.
COMP (A11): Current Control Threshold and Error Amplifier

Compensation Point. The current comparator threshold

increases with this control voltage. Tie all COMP pins

together for parallel operation. The device is internally

compensated.
RUN (A10): Run Control Pin. A voltage above 1.35V will

turn on in the module. The V

undervoltage lockout (UVLO)

of the LTM4611 must be set with resistor networks from

to RUN and optionally from RUN to GND. Tie all RUN

pins together for parallel operation.
INTV

(A7, D9): Internal 5V LDO for Driving the Control

Circuitry and the Power MOSFET Drivers. Both pins are

internally connected.
V

OUT_LCL

(L12): This pin connects to V

OUT

through a 1M

resistor and to V

with a 60.4k resistor. The remote sense

amplifier output DIFFV

OUT

is connected to V

OUT_LCL

, and

drives the 60.4k top feedback resistor in remote sensing

applications. When the remote sense amplifier is used,

the DIFF_V

OUT

effectively eliminates the 1MΩ from V

OUT

to V

OUT_LCL

. When the remote sense amplifier is not used,

then connect V

OUT_LCL

to V

OUT

directly.