PTB48560A Datasheet, PDF (2/28 Pages) Texas Instruments – 30-W, 48-V INPUT DC/DC CONVERTERS WITH AUTO-TRACK TM SEQUENCING

PTB48560A, PTB48560B
PTB48560C
SLTS236A – MARCH 2005 – REVISED OCTOBER 2005
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These devices have limited built-in ESD protection. The leads should be shorted together or the device
placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
Typical Circuit
5
Track
PTB48560x
+V_I
1
+Sense* ^{9 See Note (*)}
+V_I
V_OSeq ^{# 11}
10
V_OBus
2 _PEN
3 _NEN
8
V_OAdjust
C_O^‡
(Required)
6
-V_I
4 _-VI
V_OCOM
7
- Sense
R_SET^†
V_OSeq (3.3 V) ^#
Track
V_I
Auto-T rack
POL Module
V_O
GND Adjust
C_I ^‡
R_SET
V_POL1
C_O
Simultaneous Power-Up
V_OSeq ^#
V_POL1
V_POL2
To Other
POL Modules
Track
V_I
Auto-T rack
POL Module
V_O
GND Adjust
C_I ^‡
R_SET^†
V_POL2
C_O
# Sequenced output is only available with the PTB48560B.
* The +Sense can be connected to either the V_OSeq or V_OBus output of the PTB48560B.
† _{RSET is required to set the output voltage higher than the minimum value; see the Application Information for values.}
‡ ^{The PTB48560x modules require a minimum total output capacitance for proper operation;}
see the Electrical Characterisitics for the value required by each model.
2