PI3542-00-LGIZ Datasheet, PDF (6/37 Pages) Vicor Corporation – 36 Vin to 60 Vin Cool-Power ZVS Buck Regulator & LED Driver

PI354x-00
Pin Description
Name
Location
I/O
Description
VS1
Block 2 (See Pkg
Pin-Out dwg)
I/O
Switching node: and ZVS sense for power switches.
VIN
VDR
SYNCI
SYNCO
TESTx
PWRGD
EN
TRK
LGH
COMP
EAO
EAIN
VDIFF
VSN
VSP
VOUT
SGND
PGND
Block 1
1E
1D
1C
1B, 1A, 2B, 2A
3A
4A
5A
6A
8A
9A
10A
10B
10C
10D
9E, 10E
Block 4
Block 3
I
Input voltage: and sense for UVLO, OVLO and feed forward ramp.
I/O
Gate Driver V_CC : Internally generated 5.1 V. May be used as reference or low power bias supply
for up to 2 mA. Must be impedance limited by the user.
I
Synchronization input: Synchronize to the falling edge of external clock frequency. SYNCI is a
high impedance digital input node and should always be connected to SGND when not in use.
O
Synchronization output: Outputs a high signal for ½ of the minimum period for synchronization
of other regulators.
I/O
Test Connections: Use only with factory guidance. Connect to SGND for proper operation.
O
Power Good: High impedance when regulator is operating and V_OUT is in regulation. May also be
used as “Parallel Good” – see applications section.
I
Enable Input: Regulator enable control. Asserted high or left floating – regulator enabled;
asserted low, regulator output disabled.
I
Soft-start and track input: An external capacitor may be connected between TRK pin and SGND
to decrease the rate of rise during soft-start.
Lighting (LGH)/Constant Current (CC) Sense Input: Input with a 100 mV threshold. Used for
I
lighting and constant current type applications.When not using the constant current mode
(CC mode), the LGH pin should be connected to SGND.
O
Compensation Capacitor: Connect capacitor for control loop dominant pole.
O
Error amp output: External connection for additional compensation and current sharing.
I
Error Amp Inverting Input: Connection for the feedback divider tap.
O
Independent Amplifier Output: If unused connect in unity gain with VSP connected to SGND.
I
Independent Amplifier Inverting Input
I
Independent Amplifier Non-Inverting Input
I/O
Output voltage: and sense for power switches and feed-forward ramp.
-
Signal ground: Internal logic ground for EA, TRK, SYNCI, SYNCO communication returns. SGND
and PGND are star connected within the regulator package.
-
Power ground: V_IN and V_OUT power returns.
Package Pin-Out
Cool-Power®
Page 6 of 37
85 Pad LGA Sip (10 mm x 10mm)
(Top through view)
Rev 1.3
2/2016
Block 1:
Block 2:
Block 3:
Block 4:
V_IN; K9-10, J9-10, H9-10, G9-10
VS1; K1-7
PGND; H1-7, G1-7,F1-7, E2-8, D2-8, C2-5
SGND; D9, C6-9, B4-9, A7
vicorpower.com
800 927.9474