Rev.07.20.07

vrm10 series

3 of 10

Embedded Power for

Business-Critical Continuity

Specifications

Table 1: LL0, LL1 Load Line Codes

MODEL

LL0

LL1

LOAD LINE SLOPE, Rout

UNITS

VRM10-85-12-UY

0

0

1.25

mW

VRM10-85-12-UY

0

1

1.25

mW

VRM10-85-12-UY

1

0

1.25

mW

VRM10-85-12-UY

1

1

Reserved

mW

VRM10-80-12-PY

N/A

N/A

1.24

mW

VRM10-105-12-EJ

0

0

1.25

mW

VRM10-105-12-EJ

0

1

1.25

mW

VRM10-105-12-EJ

1

0

1.25

mW

VRM10-105-12-EJ

1

1

Reserved

mW

Notes

1

Recommended output capacitance, 12 x 560 μF aluminium polymer and 44 x

10 μF MLCC for slew rates up to 430 A/μs, 14 x 560 μF aluminum polymer

and 45 x 10 μF MLCC for slew rates up to 930 A/μs.

2

8 mV pk-pk ripple. Vin = 12 V, Vout = 1.35 V, Iout = 85 A.

3

With the recommended capacitors (See Note 1) across the output, the

output voltage stays within the load regulation window for all loads and

transient events, up to 100 A for the VRM10-85-12-UY (91 A for the VRM10-

4

VRM10 uses a four phase buck topology. Each phase switches at

550 KHz for the VRM10-85-12-UY and VRM10-80-12-PY. This gives an

equivalent switching frequency of 2.2 MHz. For the VRM10-105-12-EJ, each

phase switches at 275 KHz. This gives an equivalent switching frequency of

1.1 MHz

5

Recommended input fusing: one 20 A (or two 10 A in parallel) very fast

acting fuse(s). The VRM10 is a high current device. Use appropriate

care in handling and installation of this device, which is intended only for use

within enclosed equipment.

6

Hz, all axes.

7

Maximum current requires adequate forced air over the converter. Please

consult Figures 2 and 3 for thermal de-rating.

8

When the VRM detects an output over-voltage event, the OVP pin transitions

to logic high. This signal can be used to shut down the supply to the VRM, or

drive a crowbar device.

9

Pins 12 and 51 are not connected on VRM10-80-12-PY. On VRM10-85-12-

UY, do not leave these pins floating.

10 When included in the users system ESD event shall cause no out-of-

regulation conditions.

11 The ‘Y’ suffix indicates that these parts are TSE RoHS 5/6 (non Pb-free)

compliant.

EFFICIENCY TABLE

OUTPUT VOLTAGE

EFFICIENCY (typ.)

VID = 1.325 V @ 85 A

85%

VID = 1.325 V @ 80 A

85%

VID = 1.325 V @ 105 A

84%

Table 2: Efficiency Values

INPUT

OUTPUT

OUTPUT

OUTPUT

OUTPUT

EFFICIENCY

REGULATION

MODEL

VOLTAGE

VOLTAGE

CURRENT

CURRENT

CURRENT

(TYP.)

LOAD

NUMBER

(MIN)

(MAX.)

(MAX.)

CONTINUOUS

NON-SUSTAINED

12 Vdc

0.8375-1.6000 Vdc

1.8 V

0 A

80 A

91 A

85%

1.24 mV/A

12 Vdc

0.8375-1.6000 Vdc

1.8 V

0 A

85 A

100 A

85%

See Table 1

12 Vdc

0.8375-1.6000 Vdc

1.8 V

0 A

105 A

120 A

84%

See table 1