12

TABLE 5. HIP1012EVAL1 BOARD COMPONENT LISTING

COMPONENT

DESIGNATOR

COMPONENT NAME

COMPONENT DESCRIPTION

GENERIC BOARD

U1

HIP1012CB

Intersil Corporation, HIP1012CB Dual Power Controller

Q1, Q2

RF1K49156

Intersil Corporation, 30V, 30m

Ω, 6.3A Logic Level N-Channel

MOSFET

QxB and QxC

NOT PROVIDED

Mounting areas for additional 8 SOIC

MOSFETs

5V Sense Resistor

100m

Ω, 1%, Metal Strip current sensing resistor

3.3V/12V Sense Resistor

20m

Ω, 1%, Metal Strip current sensing resistor

Loop compensation Resistors

20

Ω, Resistor in series with gate capacitor. This RC may be necessary

to provide current loop stability. Keep resistor < 50

Ω.

Current Limit Set Resistor

10k

R*

Isolation resistor (not provided, see Decoupling

Concerns in Critical Items section)

Add resistor (<50

Gate Timing Capacitors

0.01

µF, 10µA charging I source provides slow ramp on of N-Channel

MOSFETs

Charge Pump Capacitor

0.1

µF, Charge Pump Capacitor necessary for +12V and +5V

operation.

Time-out Set Capacitor

0.047

µF, Provides ~9ms of time-out period prior to latch off during

which IOC can be resolved. The duration of current limit time-out (in

seconds) = 200k

Vdd decoupling capacitor

0.1

JP1

JP2

JP3

JP4

Jumper to configure PWRON2

Jumper to configure VDD

Jumper to configure Charge Pump Cap

Jumper to configure PWRON1

See Table 3 for jumper configuration descriptions

LED1

Pgood indicator

Lit indicates a fault condition

W1

NOT PROVIDED

Tie point for dedicated +12V HIP1012 supply, use in default

configuration

TP1 - TP14

Test Points for HIP1012 pin 1 to pin 14

P1 - P2

Edge connector fingers

Modify edge connector finger lengths for power sequencing

LOAD BOARD

SW11 and RL1

5V high load (7

Ω)

Switch and load resistor pair to invoke high current load on 5V

SW12 and RL2

5V low load (10

Ω)

Switch and load resistor pair to invoke low current load on 5V

SW13 and RL3

3.3V high load (0.8

Ω)

Switch and load resistor pair to invoke high current load on 3.3V

SW14 and RL4

3.3V low load (1.6

Ω)

Switch and load resistor pair to invoke low current load on 3.3V

LED2, LED3

Load “HOT” indicators

Lit indicates N-Channel MOSFETs are on and loads are HOT

BUS BOARD

Bus interconnect board

HIP1012, HIP1012A